diff options
Diffstat (limited to 'plugins')
59 files changed, 5093 insertions, 47 deletions
diff --git a/plugins/Makefile.am b/plugins/Makefile.am index 2ad0ae2..d8d771f 100644 --- a/plugins/Makefile.am +++ b/plugins/Makefile.am @@ -4,4 +4,4 @@ if HAVE_PYTHON3_CONFIG endif # androhelpers -SUBDIRS = devdbg fmtp libcsem mobicore $(PYTHON3_SUBDIRS) readdex readelf readmc ropgadgets +SUBDIRS = devdbg elf fmtp libcsem mobicore $(PYTHON3_SUBDIRS) readdex readelf readmc ropgadgets diff --git a/plugins/elf/Makefile.am b/plugins/elf/Makefile.am new file mode 100644 index 0000000..d3cfe05 --- /dev/null +++ b/plugins/elf/Makefile.am @@ -0,0 +1,29 @@ + +lib_LTLIBRARIES = libelf.la + +libelf_la_SOURCES = \ + core.h core.c \ + elf-int.h elf-int.c \ + elf.h elf.c \ + elf_def.h \ + elf_def_arm.h \ + dynamic.h dynamic.c \ + helper_arm.h helper_arm.c \ + loading.h loading.c \ + program.h program.c \ + section.h section.c \ + strings.h strings.c \ + symbols.h symbols.c + +libelf_la_LIBADD = \ + python/libelfpython.la + +libelf_la_LDFLAGS = \ + $(LIBPYTHON_LIBS) $(LIBPYGOBJECT_LIBS) + + +AM_CPPFLAGS = $(LIBGTK_CFLAGS) $(LIBPYTHON_CFLAGS) $(LIBPYGOBJECT_CFLAGS) $(LIBXML_CFLAGS) -I../../src + +AM_CFLAGS = $(DEBUG_CFLAGS) $(WARNING_FLAGS) $(COMPLIANCE_FLAGS) + +SUBDIRS = python diff --git a/plugins/elf/core.c b/plugins/elf/core.c new file mode 100644 index 0000000..5e2e19c --- /dev/null +++ b/plugins/elf/core.c @@ -0,0 +1,68 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * core.c - intégration du support du format ELF + * + * Copyright (C) 2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "core.h" + + +#include <core/formats.h> +#include <plugins/plugin-def.h> + + +#include "elf.h" +#include "python/module.h" + + + +DEFINE_CHRYSALIDE_ACTIVE_PLUGIN("elf", "Add suport for the ELF format", "0.1.0", + PGA_PLUGIN_INIT); + + + +/****************************************************************************** +* * +* Paramètres : plugin = greffon à manipuler. * +* ref = espace de référencement global. * +* * +* Description : Prend acte du chargement du greffon. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +G_MODULE_EXPORT bool chrysalide_plugin_init(GPluginModule *plugin) +{ + bool result; /* Bilan à retourner */ + + result = register_format_matcher(elf_is_matching, NULL); + + if (result) + result = register_format_loader("elf", "Executable and Linkable Format", g_elf_format_new); + + if (result) + result = add_format_elf_module_to_python_module(); + + return result; + +} diff --git a/plugins/elf/core.h b/plugins/elf/core.h new file mode 100644 index 0000000..9702b74 --- /dev/null +++ b/plugins/elf/core.h @@ -0,0 +1,38 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * core.h - prototypes pour l'intégration du support du format ELF + * + * Copyright (C) 2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _PLUGINS_ELF_CORE_H +#define _PLUGINS_ELF_CORE_H + + +#include <plugins/plugin.h> +#include <plugins/plugin-int.h> + + + +/* Prend acte du chargement du greffon. */ +G_MODULE_EXPORT bool chrysalide_plugin_init(GPluginModule *); + + + +#endif /* _PLUGINS_ELF_CORE_H */ diff --git a/plugins/elf/dynamic.c b/plugins/elf/dynamic.c new file mode 100644 index 0000000..782167c --- /dev/null +++ b/plugins/elf/dynamic.c @@ -0,0 +1,109 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * program.c - gestion des en-têtes de programme d'un ELF + * + * Copyright (C) 2015-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "dynamic.h" + + +#include "elf-int.h" +#include "program.h" + + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* index = indice de la section recherchée. * +* dynamic = ensemble d'informations à faire remonter. [OUT] * +* * +* Description : Recherche un en-tête de programme DYNAMIC au sein de binaire.* +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_dynamic_program_header(const GElfFormat *format, elf_phdr *dynamic) +{ + bool result; /* Bilan d'opération à renvoyer*/ + uint16_t max; /* Nombre d'en-têtes présents */ + uint16_t i; /* Boucle de parcours */ + + result = false; + + max = ELF_HDR(format, format->header, e_phnum); + + for (i = 0; i < max && !result; i++) + { + if (!find_elf_program_by_index(format, i, dynamic)) + break; + + result = (ELF_PHDR(format, *dynamic, p_type) == PT_DYNAMIC); + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* dynamic = programme de type PT_DYNAMIC. * +* type = sorte d'élément recherché. * +* item = élément retrouvé dans la section. [OUT] * +* * +* Description : Retrouve un élément donné dans la section dynamique. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_dynamic_item_from_pheader(const GElfFormat *format, const elf_phdr *dynamic, int64_t type, elf_dyn *item) +{ + bool result; /* Bilan à retourner */ + off_t max; /* Nombre d'entités présentes */ + off_t i; /* Boucle de parcours */ + phys_t pos; /* Position de lecture */ + + result = false; + + max = ELF_PHDR(format, *dynamic, p_filesz) / ELF_SIZEOF_DYN(format); + + for (i = 0; i < max && !result; i++) + { + pos = ELF_PHDR(format, *dynamic, p_offset) + i * ELF_SIZEOF_DYN(format); + + if (!read_elf_dynamic_entry(format, pos, item)) + break; + + result = (ELF_DYN(format, *item, d_tag) == type); + + } + + return result; + +} diff --git a/plugins/elf/dynamic.h b/plugins/elf/dynamic.h new file mode 100644 index 0000000..7fce1d4 --- /dev/null +++ b/plugins/elf/dynamic.h @@ -0,0 +1,41 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * dynamic.h - prototypes pour la manipulation de l'en-ête de programme 'DYNAMIC' + * + * Copyright (C) 2015-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_DYNAMIC_H +#define _FORMAT_ELF_DYNAMIC_H + + +#include "elf.h" +#include "elf_def.h" + + + +/* Recherche un en-tête de programme DYNAMIC au sein de binaire. */ +bool find_elf_dynamic_program_header(const GElfFormat *, elf_phdr *); + +/* Retrouve un élément donné dans la section dynamique. */ +bool find_elf_dynamic_item_from_pheader(const GElfFormat *, const elf_phdr *, int64_t, elf_dyn *); + + + +#endif /* _FORMAT_ELF_DYNAMIC_H */ diff --git a/plugins/elf/elf-int.c b/plugins/elf/elf-int.c new file mode 100644 index 0000000..36a0f93 --- /dev/null +++ b/plugins/elf/elf-int.c @@ -0,0 +1,431 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * elf-int.c - structures internes du format ELF + * + * Copyright (C) 2009-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "elf-int.h" + + +#include <string.h> + + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* header = en-tête à déterminer. [OUT] * +* is_32b = indique si le format est en 32 ou 64 bits. [OUT] * +* endian = boutisme reconnu dans le format. [OUT] * +* * +* Description : Procède à la lecture de l'en-tête d'un contenu binaire ELF. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_elf_header(GElfFormat *format, elf_header *header, bool *is_32b, SourceEndian *endian) +{ + bool result; /* Bilan à retourner */ + const GBinContent *content; /* Contenu binaire à lire */ + vmpa2t pos; /* Position de lecture */ + + content = G_BIN_FORMAT(format)->content; + + init_vmpa(&pos, 0, VMPA_NO_VIRTUAL); + + result = g_binary_content_read_raw(content, &pos, EI_NIDENT, (bin_t *)header->hdr32.e_ident); + + /* Détermination de l'espace d'adressage */ + if (result) + switch (header->hdr32.e_ident[EI_CLASS]) + { + case ELFCLASS32: + *is_32b = true; + break; + case ELFDATA2MSB: + *is_32b = false; + break; + default: + result = false; + break; + } + + /* Détermination du boutisme */ + if (result) + switch (header->hdr32.e_ident[EI_DATA]) + { + case ELFDATA2LSB: + *endian = SRE_LITTLE; + break; + case ELFDATA2MSB: + *endian = SRE_BIG; + break; + default: + result = false; + break; + } + + if (*is_32b) + { + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_type); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_machine); + result &= g_binary_content_read_u32(content, &pos, *endian, &header->hdr32.e_version); + result &= g_binary_content_read_u32(content, &pos, *endian, &header->hdr32.e_entry); + result &= g_binary_content_read_u32(content, &pos, *endian, &header->hdr32.e_phoff); + result &= g_binary_content_read_u32(content, &pos, *endian, &header->hdr32.e_shoff); + result &= g_binary_content_read_u32(content, &pos, *endian, &header->hdr32.e_flags); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_ehsize); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_phentsize); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_phnum); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_shentsize); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_shnum); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr32.e_shstrndx); + } + else + { + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_type); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_machine); + result &= g_binary_content_read_u32(content, &pos, *endian, &header->hdr64.e_version); + result &= g_binary_content_read_u64(content, &pos, *endian, &header->hdr64.e_entry); + result &= g_binary_content_read_u64(content, &pos, *endian, &header->hdr64.e_phoff); + result &= g_binary_content_read_u64(content, &pos, *endian, &header->hdr64.e_shoff); + result &= g_binary_content_read_u32(content, &pos, *endian, &header->hdr64.e_flags); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_ehsize); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_phentsize); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_phnum); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_shentsize); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_shnum); + result &= g_binary_content_read_u16(content, &pos, *endian, &header->hdr64.e_shstrndx); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* phys = position de début de lecture. * +* header = structure lue à retourner. [OUT] * +* * +* Description : Procède à la lecture d'une en-tête de programme ELF. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_elf_program_header(const GElfFormat *format, phys_t phys, elf_phdr *header) +{ + bool result; /* Bilan à retourner */ + const GBinContent *content; /* Contenu binaire à lire */ + vmpa2t pos; /* Position de lecture */ + + content = G_BIN_FORMAT(format)->content; + + init_vmpa(&pos, phys, VMPA_NO_VIRTUAL); + + if (format->is_32b) + { + result = g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_type); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_offset); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_vaddr); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_paddr); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_filesz); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_memsz); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_flags); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr32.p_align); + } + else + { + result = g_binary_content_read_u32(content, &pos, format->endian, &header->phdr64.p_type); + result &= g_binary_content_read_u32(content, &pos, format->endian, &header->phdr64.p_flags); + result &= g_binary_content_read_u64(content, &pos, format->endian, &header->phdr64.p_offset); + result &= g_binary_content_read_u64(content, &pos, format->endian, &header->phdr64.p_vaddr); + result &= g_binary_content_read_u64(content, &pos, format->endian, &header->phdr64.p_paddr); + result &= g_binary_content_read_u64(content, &pos, format->endian, &header->phdr64.p_filesz); + result &= g_binary_content_read_u64(content, &pos, format->endian, &header->phdr64.p_memsz); + result &= g_binary_content_read_u64(content, &pos, format->endian, &header->phdr64.p_align); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* phys = position de début de lecture. * +* section = section lue. [OUT] * +* * +* Description : Procède à la lecture d'une en-tête de section ELF. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_elf_section_header(const GElfFormat *format, phys_t phys, elf_shdr *section) +{ + bool result; /* Bilan à retourner */ + const GBinContent *content; /* Contenu binaire à lire */ + vmpa2t pos; /* Position de lecture */ + elf32_shdr *shdr32; /* Version 32 bits */ + elf64_shdr *shdr64; /* Version 32 bits */ + + result = true; + + content = G_BIN_FORMAT(format)->content; + + init_vmpa(&pos, phys, VMPA_NO_VIRTUAL); + + if (format->is_32b) + { + shdr32 = §ion->shdr32; + + result = g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_name); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_type); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_flags); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_addr); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_offset); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_size); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_link); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_info); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_addralign); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr32->sh_entsize); + + } + else + { + shdr64 = §ion->shdr64; + + result = g_binary_content_read_u32(content, &pos, format->endian, &shdr64->sh_name); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr64->sh_type); + result &= g_binary_content_read_u64(content, &pos, format->endian, &shdr64->sh_flags); + result &= g_binary_content_read_u64(content, &pos, format->endian, &shdr64->sh_addr); + result &= g_binary_content_read_u64(content, &pos, format->endian, &shdr64->sh_offset); + result &= g_binary_content_read_u64(content, &pos, format->endian, &shdr64->sh_size); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr64->sh_link); + result &= g_binary_content_read_u32(content, &pos, format->endian, &shdr64->sh_info); + result &= g_binary_content_read_u64(content, &pos, format->endian, &shdr64->sh_addralign); + result &= g_binary_content_read_u64(content, &pos, format->endian, &shdr64->sh_entsize); + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* phys = position de début de lecture. * +* dyn = structure lue à retourner. [OUT] * +* * +* Description : Procède à la lecture d'une entrée de type 'DYNAMIC' ELF. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_elf_dynamic_entry(const GElfFormat *format, phys_t phys, elf_dyn *dyn) +{ + bool result; /* Bilan à retourner */ + const GBinContent *content; /* Contenu binaire à lire */ + vmpa2t pos; /* Position de lecture */ + + content = G_BIN_FORMAT(format)->content; + + init_vmpa(&pos, phys, VMPA_NO_VIRTUAL); + + if (format->is_32b) + { + result = g_binary_content_read_s32(content, &pos, format->endian, &dyn->dyn32.d_tag); + result &= g_binary_content_read_u32(content, &pos, format->endian, &dyn->dyn32.d_un.d_val); + } + else + { + result = g_binary_content_read_s64(content, &pos, format->endian, &dyn->dyn64.d_tag); + result &= g_binary_content_read_u64(content, &pos, format->endian, &dyn->dyn64.d_un.d_val); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* pos = position de début de lecture. [OUT] * +* sym = structure lue à retourner. [OUT] * +* * +* Description : Procède à la lecture d'un symbole ELF. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_elf_symbol(const GElfFormat *format, phys_t *phys, elf_sym *sym) +{ + bool result; /* Bilan à retourner */ + const GBinContent *content; /* Contenu binaire à lire */ + vmpa2t pos; /* Position de lecture */ + + content = G_BIN_FORMAT(format)->content; + + init_vmpa(&pos, *phys, VMPA_NO_VIRTUAL); + + if (format->is_32b) + { + result = g_binary_content_read_u32(content, &pos, format->endian, &sym->sym32.st_name); + result &= g_binary_content_read_u32(content, &pos, format->endian, &sym->sym32.st_value); + result &= g_binary_content_read_u32(content, &pos, format->endian, &sym->sym32.st_size); + result &= g_binary_content_read_u8(content, &pos, &sym->sym32.st_info); + result &= g_binary_content_read_u8(content, &pos, &sym->sym32.st_other); + result &= g_binary_content_read_u16(content, &pos, format->endian, &sym->sym32.st_shndx); + } + else + { + result = g_binary_content_read_u32(content, &pos, format->endian, &sym->sym64.st_name); + result &= g_binary_content_read_u8(content, &pos, &sym->sym64.st_info); + result &= g_binary_content_read_u8(content, &pos, &sym->sym64.st_other); + result &= g_binary_content_read_u16(content, &pos, format->endian, &sym->sym64.st_shndx); + result &= g_binary_content_read_u64(content, &pos, format->endian, &sym->sym64.st_value); + result &= g_binary_content_read_u64(content, &pos, format->endian, &sym->sym64.st_size); + } + + if (result) + *phys = get_phy_addr(&pos); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* phys = position de début de lecture. [OUT] * +* reloc = structure lue à retourner. [OUT] * +* * +* Description : Procède à la lecture d'une relocalisation ELF. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_elf_relocation(const GElfFormat *format, phys_t *phys, elf_rel *reloc) +{ + bool result; /* Bilan à retourner */ + const GBinContent *content; /* Contenu binaire à lire */ + vmpa2t pos; /* Position de lecture */ + + content = G_BIN_FORMAT(format)->content; + + init_vmpa(&pos, *phys, VMPA_NO_VIRTUAL); + + if (format->is_32b) + { + result = g_binary_content_read_u32(content, &pos, format->endian, &reloc->rel32.r_offset); + result &= g_binary_content_read_u32(content, &pos, format->endian, &reloc->rel32.r_info); + } + else + { + result = g_binary_content_read_u64(content, &pos, format->endian, &reloc->rel64.r_offset); + result &= g_binary_content_read_u64(content, &pos, format->endian, &reloc->rel64.r_info); + } + + if (result) + *phys = get_phy_addr(&pos); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* content = contenu binaire mis à disposition ou NULL. * +* pos = position de début de lecture. [OUT] * +* note = structure lue à retourner. [OUT] * +* * +* Description : Procède à la lecture d'une note ELF. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_elf_note(const GElfFormat *format, GBinContent *content, phys_t *phys, elf_note *note) +{ + bool result; /* Bilan à retourner */ + vmpa2t pos; /* Position de lecture */ + + if (content == NULL) + content = G_BIN_FORMAT(format)->content; + + init_vmpa(&pos, *phys, VMPA_NO_VIRTUAL); + + result = g_binary_content_read_u32(content, &pos, format->endian, ¬e->namesz); + result &= g_binary_content_read_u32(content, &pos, format->endian, ¬e->descsz); + result &= g_binary_content_read_u32(content, &pos, format->endian, ¬e->type); + + if (result && note->namesz > 0) + { + align_vmpa(&pos, 4); + + note->name = (const char *)g_binary_content_get_raw_access(content, &pos, note->namesz); + + result &= (note->name != NULL); + + } + else note->name = NULL; + + if (result && note->descsz > 0) + { + align_vmpa(&pos, 4); + + note->desc = (const void *)g_binary_content_get_raw_access(content, &pos, note->descsz); + + result &= (note->desc != NULL); + + } + else note->desc = NULL; + + return result; + +} diff --git a/plugins/elf/elf-int.h b/plugins/elf/elf-int.h new file mode 100644 index 0000000..34f15cb --- /dev/null +++ b/plugins/elf/elf-int.h @@ -0,0 +1,80 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * elf-int.h - prototypes pour les structures internes du format ELF + * + * Copyright (C) 2008-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_ELF_INT_H +#define _FORMAT_ELF_ELF_INT_H + + +#include <common/endianness.h> +#include <format/executable-int.h> + + +#include "elf.h" +#include "elf_def.h" + + + +/* Format d'exécutable générique (instance) */ +struct _GElfFormat +{ + GExeFormat parent; /* A laisser en premier */ + + elf_header header; /* En-tête du format */ + bool is_32b; /* Format du binaire */ + SourceEndian endian; /* Boutisme du format */ + +}; + +/* Format d'exécutable générique (classe) */ +struct _GElfFormatClass +{ + GExeFormatClass parent; /* A laisser en premier */ + +}; + + + +/* Procède à la lecture de l'en-tête d'un contenu binaire ELF. */ +bool read_elf_header(GElfFormat *, elf_header *, bool *, SourceEndian *); + +/* Procède à la lecture d'une en-tête de programme ELF. */ +bool read_elf_program_header(const GElfFormat *, phys_t, elf_phdr *); + +/* Procède à la lecture d'une en-tête de section ELF. */ +bool read_elf_section_header(const GElfFormat *, phys_t, elf_shdr *); + +/* Procède à la lecture d'une entrée de type 'DYNAMIC' ELF. */ +bool read_elf_dynamic_entry(const GElfFormat *, phys_t, elf_dyn *); + +/* Procède à la lecture d'un symbole ELF. */ +bool read_elf_symbol(const GElfFormat *, phys_t *, elf_sym *); + +/* Procède à la lecture d'une relocalisation ELF. */ +bool read_elf_relocation(const GElfFormat *, phys_t *, elf_rel *); + +/* Procède à la lecture d'une note ELF. */ +bool read_elf_note(const GElfFormat *, GBinContent *, phys_t *, elf_note *); + + + +#endif /* _FORMAT_ELF_ELF_INT_H */ diff --git a/plugins/elf/elf.c b/plugins/elf/elf.c new file mode 100644 index 0000000..04ee031 --- /dev/null +++ b/plugins/elf/elf.c @@ -0,0 +1,707 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * elf.c - support du format ELF + * + * Copyright (C) 2009-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "elf.h" + + +#include <malloc.h> +#include <stddef.h> +#include <stdio.h> +#include <string.h> + + +#include <i18n.h> +#include <gui/panels/log.h> +#include <plugins/pglist.h> + + +#include "elf-int.h" +#include "program.h" +#include "section.h" +#include "strings.h" +#include "symbols.h" + + + +/* Taille maximale d'une description */ +#define MAX_PORTION_DESC 256 + + +/* Initialise la classe des formats d'exécutables ELF. */ +static void g_elf_format_class_init(GElfFormatClass *); + +/* Initialise une instance de format d'exécutable ELF. */ +static void g_elf_format_init(GElfFormat *); + +/* Supprime toutes les références externes. */ +static void g_elf_format_dispose(GElfFormat *); + +/* Procède à la libération totale de la mémoire. */ +static void g_elf_format_finalize(GElfFormat *); + +/* Informe quant au boutisme utilisé. */ +static SourceEndian g_elf_format_get_endianness(const GElfFormat *); + +/* Indique le type d'architecture visée par le format. */ +static const char *g_elf_format_get_target_machine(const GElfFormat *); + +/* Fournit l'adresse principale associée à un format Elf. */ +static bool g_elf_format_get_main_address(GElfFormat *, vmpa2t *); + +/* Etend la définition des portions au sein d'un binaire. */ +static void g_elf_format_refine_portions(GElfFormat *); + +/* Fournit l'emplacement correspondant à une position physique. */ +static bool g_elf_format_translate_offset_into_vmpa(const GElfFormat *, phys_t, vmpa2t *); + +/* Fournit l'emplacement correspondant à une position physique. */ +static bool g_elf_format_translate_address_into_vmpa(const GElfFormat *, virt_t, vmpa2t *); + +/* Fournit l'emplacement d'une section donnée. */ +static bool g_elf_format_get_section_range_by_name(const GElfFormat *, const char *, mrange_t *); + + + +/****************************************************************************** +* * +* Paramètres : content = contenu binaire à parcourir. * +* parent = éventuel format exécutable déjà chargé. * +* unused = adresse non utilisée ici. * +* key = identifiant de format trouvé ou NULL. [OUT] * +* * +* Description : Indique si le format peut être pris en charge ici. * +* * +* Retour : Conclusion de haut niveau sur la reconnaissance effectuée. * +* * +* Remarques : - * +* * +******************************************************************************/ + +FormatMatchStatus elf_is_matching(GBinContent *content, GExeFormat *parent, void *unused, char **key) +{ + FormatMatchStatus result; /* Bilan à renvoyer */ + vmpa2t addr; /* Tête de lecture initiale */ + bool status; /* Bilan des accès mémoire */ + char magic[4]; /* Idenfiant standard */ + + if (parent != NULL) + return FMS_UNKNOWN; + + init_vmpa(&addr, 0, VMPA_NO_VIRTUAL); + + status = g_binary_content_read_raw(content, &addr, 4, (bin_t *)magic); + + status &= (memcmp(magic, "\x7f\x45\x4c\x46" /* .ELF */, 4) == 0); + + if (status) + { + result = FMS_MATCHED; + *key = strdup("elf"); + } + else + result = FMS_UNKNOWN; + + return result; + +} + + +/* Indique le type défini pour un format d'exécutable ELF. */ +G_DEFINE_TYPE(GElfFormat, g_elf_format, G_TYPE_EXE_FORMAT); + + +/****************************************************************************** +* * +* Paramètres : klass = classe à initialiser. * +* * +* Description : Initialise la classe des formats d'exécutables ELF. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_format_class_init(GElfFormatClass *klass) +{ + GObjectClass *object; /* Autre version de la classe */ + GBinFormatClass *fmt; /* Version en format basique */ + GExeFormatClass *exe; /* Version en exécutable */ + + object = G_OBJECT_CLASS(klass); + + object->dispose = (GObjectFinalizeFunc/* ! */)g_elf_format_dispose; + object->finalize = (GObjectFinalizeFunc)g_elf_format_finalize; + + fmt = G_BIN_FORMAT_CLASS(klass); + + fmt->get_endian = (format_get_endian_fc)g_elf_format_get_endianness; + + exe = G_EXE_FORMAT_CLASS(klass); + + exe->get_machine = (get_target_machine_fc)g_elf_format_get_target_machine; + exe->get_main_addr = (get_main_addr_fc)g_elf_format_get_main_address; + exe->refine_portions = (refine_portions_fc)g_elf_format_refine_portions; + + exe->translate_phys = (translate_phys_fc)g_elf_format_translate_offset_into_vmpa; + exe->translate_virt = (translate_virt_fc)g_elf_format_translate_address_into_vmpa; + + exe->get_range_by_name = (get_range_by_name_fc)g_elf_format_get_section_range_by_name; + +} + + +/****************************************************************************** +* * +* Paramètres : format = instance à initialiser. * +* * +* Description : Initialise une instance de format d'exécutable ELF. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_format_init(GElfFormat *format) +{ + +} + + +/****************************************************************************** +* * +* Paramètres : format = instance d'objet GLib à traiter. * +* * +* Description : Supprime toutes les références externes. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_format_dispose(GElfFormat *format) +{ + G_OBJECT_CLASS(g_elf_format_parent_class)->dispose(G_OBJECT(format)); + +} + + +/****************************************************************************** +* * +* Paramètres : format = instance d'objet GLib à traiter. * +* * +* Description : Procède à la libération totale de la mémoire. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_format_finalize(GElfFormat *format) +{ + G_OBJECT_CLASS(g_elf_format_parent_class)->finalize(G_OBJECT(format)); + +} + + +/****************************************************************************** +* * +* Paramètres : content = contenu binaire à parcourir. * +* parent = éventuel format exécutable déjà chargé. * + status = barre de statut à tenir informée. * +* * +* Description : Prend en charge un nouveau format ELF. * +* * +* Retour : Adresse de la structure mise en place ou NULL en cas d'échec.* +* * +* Remarques : - * +* * +******************************************************************************/ + +GBinFormat *g_elf_format_new(GBinContent *content, GExeFormat *parent, GtkStatusStack *status) +{ + GElfFormat *result; /* Structure à retourner */ + GBinFormat *base; /* Version basique du format */ + GExeFormat *exe_format; /* Autre version du format */ + + result = g_object_new(G_TYPE_ELF_FORMAT, NULL); + + base = G_BIN_FORMAT(result); + exe_format = G_EXE_FORMAT(result); + + g_binary_format_set_content(base, content); + + if (!read_elf_header(result, &result->header, &result->is_32b, &result->endian)) + { + /* TODO */ + return NULL; + } + + + /* Vérification des tailles d'entrée de table */ + + if (ELF_HDR(result, result->header, e_phentsize) != ELF_SIZEOF_PHDR(result)) + { + log_variadic_message(LMT_BAD_BINARY, _("Corrupted program header size (%hu); fixed! -- replacing 0x%04hx by 0x%04hx at offset 0x%x"), + ELF_HDR(result, result->header, e_phentsize), + ELF_HDR(result, result->header, e_phentsize), + ELF_SIZEOF_PHDR(result), ELF_HDR_OFFSET_OF(result, e_phentsize)); + ELF_HDR_SET(result, result->header, e_phentsize, ELF_SIZEOF_PHDR(result)); + } + + if (ELF_HDR(result, result->header, e_shentsize) != ELF_SIZEOF_SHDR(result)) + { + log_variadic_message(LMT_BAD_BINARY, _("Corrupted section header size (%hu); fixed! -- replacing 0x%04hx by 0x%04hx at offset 0x%x"), + ELF_HDR(result, result->header, e_shentsize), + ELF_HDR(result, result->header, e_shentsize), + ELF_SIZEOF_SHDR(result), ELF_HDR_OFFSET_OF(result, e_shentsize)); + ELF_HDR_SET(result, result->header, e_shentsize, ELF_SIZEOF_SHDR(result)); + } + + /* FIXME : à améliorer */ + /* + if ((ELF_HDR(result, result->header, e_shnum) * ELF_HDR(result, result->header, e_shentsize)) >= length) + { + log_variadic_message(LMT_BAD_BINARY, ("Suspicious section table (bigger than the binary !) ; reset! -- replacing 0x%04hx by 0x%04hx at offset 0x%x"), + ELF_HDR(result, result->header, e_shnum), + 0, ELF_HDR_OFFSET_OF(result, e_shnum)); + ELF_HDR_SET(result, result->header, e_shnum, 0); + } + */ + + + + /** + * On inscrit les éléments préchargés avant tout ! + * + * Cela permet de partir d'une base vide, et d'ajouter les instructions et + * leurs commentaires par paires. + * + * Ensuite, on inscrit le reste (comme les chaînes de caractères). + */ + + preload_binary_format(PGA_FORMAT_PRELOAD, base, base->info, status); + + + if (!load_elf_symbols(result, status)) + { + /* TODO */ + return NULL; + } + + + if (!find_all_elf_strings(result)) + { + /* TODO */ + return NULL; + } + + + if (!g_executable_format_complete_loading(exe_format, status)) + goto gefn_error; + + return base; + + gefn_error: + + g_object_unref(G_OBJECT(result)); + + return NULL; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* * +* Description : Informe quant au boutisme utilisé. * +* * +* Retour : Indicateur de boutisme. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static SourceEndian g_elf_format_get_endianness(const GElfFormat *format) +{ + return format->endian; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* * +* Description : Indique le type d'architecture visée par le format. * +* * +* Retour : Identifiant de l'architecture ciblée par le format. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static const char *g_elf_format_get_target_machine(const GElfFormat *format) +{ + const char *result; /* Identifiant à retourner */ + + switch (ELF_HDR(format, format->header, e_machine)) + { + case EM_386: + result = "i386"; + break; + + case EM_MIPS: + result = "mips"; + break; + + case EM_ARM: + result = "armv7"; + break; + + case EM_NONE: + default: + result = NULL; + break; + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* addr = adresse principale trouvée si possible. [OUT] * +* * +* Description : Fournit l'adresse principale associée à un format Elf. * +* * +* Retour : Bilan des recherches. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool g_elf_format_get_main_address(GElfFormat *format, vmpa2t *addr) +{ + bool result; /* Bilan à retourner */ + GBinSymbol *symbol; /* Point d'entrée trouvé */ + GBinFormat *base; /* Version d'instance parente */ + const mrange_t *range; /* Emplacement de ce point */ + + result = false; + symbol = NULL; + + base = G_BIN_FORMAT(format); + + if (g_binary_format_find_symbol_by_label(base, "main", &symbol)) + goto done; + + if (g_binary_format_find_symbol_by_label(base, "_start", &symbol)) + goto done; + + if (g_binary_format_find_symbol_by_label(base, "entry_point", &symbol)) + goto done; + + done: + + if (symbol != NULL) + { + result = true; + + range = g_binary_symbol_get_range(symbol); + + copy_vmpa(addr, get_mrange_addr(range)); + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* * +* Description : Etend la définition des portions au sein d'un binaire. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_format_refine_portions(GElfFormat *format) +{ + GExeFormat *exe_format; /* Autre version du format */ + uint16_t max; /* Décompte d'éléments traités */ + uint16_t i; /* Boucle de parcours */ + off_t offset; /* Début de part de programme */ + vmpa2t origin; /* Origine d'une définition */ + elf_phdr phdr; /* En-tête de programme ELF */ + uint32_t p_flags; /* Droits associés à une partie*/ + const char *background; /* Fond signigicatif */ + GBinPortion *new; /* Nouvelle portion définie */ + char desc[MAX_PORTION_DESC]; /* Description d'une portion */ + vmpa2t addr; /* Emplacement dans le binaire */ + PortionAccessRights rights; /* Droits d'une portion */ + elf_shdr strings; /* Section des descriptions */ + bool has_strings; /* Section trouvée ? */ + elf_shdr shdr; /* En-tête de section ELF */ + uint64_t sh_flags; /* Droits associés à une partie*/ + mrange_t range; /* Emplacement d'une section */ + const char *name; /* Nom trouvé ou NULL */ + + exe_format = G_EXE_FORMAT(format); + + /** + * La copie des différents en-têtes cherche à reproduire l'inclusion native + * du format : + * + * EXIDX 0x001178 0x00009178 0x00009178 0x00008 0x00008 R 0x4 + * PHDR 0x000034 0x00008034 0x00008034 0x00120 0x00120 R E 0x4 + * INTERP 0x000154 0x00008154 0x00008154 0x00019 0x00019 R 0x1 + * LOAD 0x000000 0x00008000 0x00008000 0x01184 0x01184 R E 0x8000 + * + */ + + /** + * Côté segments basiques. + */ + + max = ELF_HDR(format, format->header, e_phnum); + + for (i = 0; i < max; i++) + { + offset = ELF_HDR(format, format->header, e_phoff) + + ELF_HDR(format, format->header, e_phentsize) * i; + + init_vmpa(&origin, offset, VMPA_NO_VIRTUAL); + + if (!read_elf_program_header(format, offset, &phdr)) + continue; + + if (ELF_PHDR(format, phdr, p_type) == PT_NULL) + continue; + + p_flags = ELF_PHDR(format, phdr, p_flags); + + if (p_flags & PF_X) background = BPC_CODE; + else if (p_flags & PF_W) background = BPC_DATA; + else background = BPC_DATA_RO; + + init_vmpa(&addr, ELF_PHDR(format, phdr, p_offset), ELF_PHDR(format, phdr, p_vaddr)); + + new = g_binary_portion_new(background, &addr, ELF_PHDR(format, phdr, p_filesz)); + + snprintf(desc, MAX_PORTION_DESC, "%s \"%s\"", + _("Segment"), + get_elf_program_type_desc(format, ELF_PHDR(format, phdr, p_type))); + + g_binary_portion_set_desc(new, desc); + + rights = PAC_NONE; + if (p_flags & PF_R) rights |= PAC_READ; + if (p_flags & PF_W) rights |= PAC_WRITE; + if (p_flags & PF_X) rights |= PAC_EXEC; + + g_binary_portion_set_rights(new, rights); + + g_exe_format_include_portion(exe_format, new, &origin); + + } + + /** + * Inclusion des sections, si possible... + */ + + has_strings = find_elf_section_by_index(format, + ELF_HDR(format, format->header, e_shstrndx), + &strings); + + max = ELF_HDR(format, format->header, e_shnum); + + for (i = 0; i < max; i++) + { + if (!find_elf_section_by_index(format, i, &shdr)) + continue; + + if (ELF_SHDR(format, shdr, sh_offset) == 0) + continue; + + sh_flags = ELF_SHDR(format, shdr, sh_flags); + + if (sh_flags & SHF_EXECINSTR) background = BPC_CODE; + else if (sh_flags & SHF_WRITE) background = BPC_DATA; + else background = BPC_DATA_RO; + + get_elf_section_range(format, &shdr, &range); + + new = g_binary_portion_new(background, get_mrange_addr(&range), get_mrange_length(&range)); + + if (has_strings) + name = extract_name_from_elf_string_section(format, &strings, + ELF_SHDR(format, shdr, sh_name)); + else name = NULL; + + if (name != NULL) + sprintf(desc, "%s \"%s\"", _("Section"), name); + else + sprintf(desc, "%s ???", _("Section")); + + g_binary_portion_set_desc(new, desc); + + rights = PAC_NONE; + if (sh_flags & SHF_ALLOC) rights |= PAC_READ; + if (sh_flags & SHF_WRITE) rights |= PAC_WRITE; + if (sh_flags & SHF_EXECINSTR) rights |= PAC_EXEC; + + g_binary_portion_set_rights(new, rights); + + offset = ELF_HDR(format, format->header, e_shoff) + + ELF_HDR(format, format->header, e_shentsize) * i; + + init_vmpa(&origin, offset, VMPA_NO_VIRTUAL); + + g_exe_format_include_portion(exe_format, new, &origin); + + } + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* off = position physique à retrouver. * +* pos = position correspondante. [OUT] * +* * +* Description : Fournit l'emplacement correspondant à une position physique. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool g_elf_format_translate_offset_into_vmpa(const GElfFormat *format, phys_t off, vmpa2t *pos) +{ + bool result; /* Bilan à retourner */ + + result = translate_offset_into_vmpa_using_elf_sections(format, off, pos); + + if (!result) + result = translate_offset_into_vmpa_using_elf_programs(format, off, pos); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* addr = adresse virtuelle à retrouver. * +* pos = position correspondante. [OUT] * +* * +* Description : Fournit l'emplacement correspondant à une adresse virtuelle. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool g_elf_format_translate_address_into_vmpa(const GElfFormat *format, virt_t addr, vmpa2t *pos) +{ + bool result; /* Bilan à retourner */ + + result = translate_address_into_vmpa_using_elf_sections(format, addr, pos); + + if (!result) + result = translate_address_into_vmpa_using_elf_programs(format, addr, pos); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* name = nom de la section recherchée. * +* range = emplacement en mémoire à renseigner. [OUT] * +* * +* Description : Fournit l'emplacement d'une section donnée. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool g_elf_format_get_section_range_by_name(const GElfFormat *format, const char *name, mrange_t *range) +{ + bool result; /* Bilan à retourner */ + phys_t offset; /* Position physique de section*/ + phys_t size; /* Taille de la section trouvée*/ + virt_t address; /* Adresse virtuelle de section*/ + vmpa2t tmp; /* Adresse à initialiser */ + + result = find_elf_section_content_by_name(format, name, &offset, &size, &address); + + if (result) + { + init_vmpa(&tmp, offset, address); + init_mrange(range, &tmp, size); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* * +* Description : Présente l'en-tête ELF du format chargé. * +* * +* Retour : Pointeur vers la description principale. * +* * +* Remarques : - * +* * +******************************************************************************/ + +const elf_header *g_elf_format_get_header(const GElfFormat *format) +{ + return &format->header; + +} diff --git a/plugins/elf/elf.h b/plugins/elf/elf.h new file mode 100644 index 0000000..7e1895b --- /dev/null +++ b/plugins/elf/elf.h @@ -0,0 +1,68 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * elf.h - prototypes pour le support du format ELF + * + * Copyright (C) 2009-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_ELF_H +#define _FORMAT_ELF_ELF_H + + +#include <glib-object.h> +#include <stdbool.h> +#include <sys/types.h> + + +#include <core/formats.h> + + +#include "elf_def.h" + + + +#define G_TYPE_ELF_FORMAT g_elf_format_get_type() +#define G_ELF_FORMAT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), g_elf_format_get_type(), GElfFormat)) +#define G_IS_ELF_FORMAT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), g_elf_format_get_type())) +#define G_ELF_FORMAT_GET_IFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE((inst), g_elf_format_get_type(), GElfFormatIface)) +#define G_ELF_FORMAT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_ELF_FORMAT, GElfFormatClass)) + + +/* Format d'exécutable ELF (instance) */ +typedef struct _GElfFormat GElfFormat; + +/* Format d'exécutable ELF (classe) */ +typedef struct _GElfFormatClass GElfFormatClass; + + +/* Indique si le format peut être pris en charge ici. */ +FormatMatchStatus elf_is_matching(GBinContent *, GExeFormat *, void *, char **); + +/* Indique le type défini pour un format d'exécutable ELF. */ +GType g_elf_format_get_type(void); + +/* Prend en charge un nouveau format ELF. */ +GBinFormat *g_elf_format_new(GBinContent *, GExeFormat *, GtkStatusStack *); + +/* Présente l'en-tête ELF du format chargé. */ +const elf_header *g_elf_format_get_header(const GElfFormat *); + + + +#endif /* _FORMAT_ELF_ELF_H */ diff --git a/plugins/elf/elf_def.h b/plugins/elf/elf_def.h new file mode 100644 index 0000000..0d91e00 --- /dev/null +++ b/plugins/elf/elf_def.h @@ -0,0 +1,634 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * elf_def.h - liste des structures et constantes utilisées par le format ELF + * + * Copyright (C) 2009-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_ELF_DEF_H +#define _FORMAT_ELF_ELF_DEF_H + + +#include <stdint.h> + + + +/* ---------------------------- EN-TETE DES FICHIERS ELF ---------------------------- */ + + +#define EI_NIDENT 16 + + +/* En-tête de fichier ELF (32 et 64 bits) */ + +typedef struct _elf32_header +{ + uint8_t e_ident[EI_NIDENT]; /* Magic number + informations */ + uint16_t e_type; /* Type de fichier */ + uint16_t e_machine; /* Architecture */ + uint32_t e_version; /* Version du type de fichier */ + uint32_t e_entry; /* Point d'entrée du programme */ + uint32_t e_phoff; /* Début de la table 'Program' */ + uint32_t e_shoff; /* Début de la table 'Section' */ + uint32_t e_flags; /* Prop. spécifiques au proc. */ + uint16_t e_ehsize; /* Taille de l'en-tête en oct. */ + uint16_t e_phentsize; /* Taille d'une entrée Program */ + uint16_t e_phnum; /* Nombre d'éléments 'Program' */ + uint16_t e_shentsize; /* Taille d'une entrée Section */ + uint16_t e_shnum; /* Nombre d'éléments 'Section' */ + uint16_t e_shstrndx; /* Indice de la section chaînes*/ + +} elf32_header; + +typedef struct _elf64_header +{ + uint8_t e_ident[EI_NIDENT]; /* Magic number + informations */ + uint16_t e_type; /* Type de fichier */ + uint16_t e_machine; /* Architecture */ + uint32_t e_version; /* Version du type de fichier */ + uint64_t e_entry; /* Point d'entrée du programme */ + uint64_t e_phoff; /* Début de la table 'Program' */ + uint64_t e_shoff; /* Début de la table 'Section' */ + uint32_t e_flags; /* Prop. spécifiques au proc. */ + uint16_t e_ehsize; /* Taille de l'en-tête en oct. */ + uint16_t e_phentsize; /* Taille d'une entrée Program */ + uint16_t e_phnum; /* Nombre d'éléments 'Program' */ + uint16_t e_shentsize; /* Taille d'une entrée Section */ + uint16_t e_shnum; /* Nombre d'éléments 'Section' */ + uint16_t e_shstrndx; /* Indice de la section chaînes*/ + +} elf64_header; + +typedef union _elf_header +{ + elf32_header hdr32; /* Version 32 bits */ + elf64_header hdr64; /* Version 64 bits */ + +} elf_header; + + +#define ELF_HDR(fmt, hdr, fld) (fmt->is_32b ? (hdr).hdr32.fld : (hdr).hdr64.fld) + +#define ELF_HDR_SET(fmt, hdr, fld, val) \ + do \ + { \ + if (fmt->is_32b) (hdr).hdr32.fld = val; \ + else (hdr).hdr64.fld = val; \ + } \ + while (0) + +#define ELF_HDR_OFFSET_OF(fmt, fld) (fmt->is_32b ? offsetof(elf32_header, fld) : offsetof(elf64_header, fld)) + +#define ELF_SIZEOF_HDR(fmt) (fmt->is_32b ? sizeof(elf32_header) : sizeof(elf64_header)) + + +/* Composition du champ e_ident */ + + +#define EI_CLASS 4 /* Indice de classe du fichier */ +#define EI_DATA 5 /* Indice de l'encodage */ +#define EI_VERSION 6 /* Version de fichier ELF */ +#define EI_OSABI 7 /* Identification de l'ABI OS */ + + +/* ... EI_CLASS */ + +#define ELFCLASSNONE 0 /* Objet invalide */ +#define ELFCLASS32 1 /* Objet 32 bits */ +#define ELFCLASS64 2 /* Objet 64 bits */ + +/* ... EI_DATA */ + +#define ELFDATANONE 0 /* Encodage invalide */ +#define ELFDATA2LSB 1 /* Complément à 2, petit bout. */ +#define ELFDATA2MSB 2 /* Complément à 2, grand bout. */ + +/* ... EI_VERSION */ + +#define EV_NONE 0 /* Version ELF invalide */ +#define EV_CURRENT 1 /* Version d'ELF courante */ + +/* ... EI_OSABI */ + +#define ELFOSABI_NONE 0 /* UNIX System V ABI */ +#define ELFOSABI_SYSV 0 /* Alias. */ +#define ELFOSABI_HPUX 1 /* HP-UX */ +#define ELFOSABI_NETBSD 2 /* NetBSD. */ +#define ELFOSABI_GNU 3 /* Object uses GNU ELF extensions. */ +#define ELFOSABI_LINUX ELFOSABI_GNU /* Compatibility alias. */ +#define ELFOSABI_SOLARIS 6 /* Sun Solaris. */ +#define ELFOSABI_AIX 7 /* IBM AIX. */ +#define ELFOSABI_IRIX 8 /* SGI Irix. */ +#define ELFOSABI_FREEBSD 9 /* FreeBSD. */ +#define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX. */ +#define ELFOSABI_MODESTO 11 /* Novell Modesto. */ +#define ELFOSABI_OPENBSD 12 /* OpenBSD. */ +#define ELFOSABI_ARM_AEABI 64 /* ARM EABI */ +#define ELFOSABI_ARM 97 /* ARM */ +#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ + +/* Valeurs possibles pour e_type */ + +#define ET_NONE 0 /* Aucun type défini */ +#define ET_REL 1 /* Fichier relogeable */ +#define ET_EXEC 2 /* Fichier exécutable */ +#define ET_DYN 3 /* Bibliothèque dynamique */ +#define ET_CORE 4 /* Fichier Core */ +#define ET_LOOS 0xfe00 /* Spécifique OS : début */ +#define ET_HIOS 0xfeff /* Spécifique OS : fin */ +#define ET_LOPROC 0xff00 /* Spécifique processeur : deb.*/ +#define ET_HIPROC 0xffff /* Spécifique processeur : fin */ + +/* Valeurs possibles pour e_machine */ + +#define EM_NONE 0 /* No machine */ +#define EM_M32 1 /* AT&T WE 32100 */ +#define EM_SPARC 2 /* SUN SPARC */ +#define EM_386 3 /* Intel 80386 */ +#define EM_68K 4 /* Motorola m68k family */ +#define EM_88K 5 /* Motorola m88k family */ +#define EM_860 7 /* Intel 80860 */ +#define EM_MIPS 8 /* MIPS R3000 big-endian */ +#define EM_S370 9 /* IBM System/370 */ +#define EM_MIPS_RS3_LE 10 /* MIPS R3000 little-endian */ +#define EM_PARISC 15 /* HPPA */ +#define EM_VPP500 17 /* Fujitsu VPP500 */ +#define EM_SPARC32PLUS 18 /* Sun's "v8plus" */ +#define EM_960 19 /* Intel 80960 */ +#define EM_PPC 20 /* PowerPC */ +#define EM_PPC64 21 /* PowerPC 64-bit */ +#define EM_S390 22 /* IBM S390 */ +#define EM_V800 36 /* NEC V800 series */ +#define EM_FR20 37 /* Fujitsu FR20 */ +#define EM_RH32 38 /* TRW RH-32 */ +#define EM_RCE 39 /* Motorola RCE */ +#define EM_ARM 40 /* ARM */ +#define EM_FAKE_ALPHA 41 /* Digital Alpha */ +#define EM_SH 42 /* Hitachi SH */ +#define EM_SPARCV9 43 /* SPARC v9 64-bit */ +#define EM_TRICORE 44 /* Siemens Tricore */ +#define EM_ARC 45 /* Argonaut RISC Core */ +#define EM_H8_300 46 /* Hitachi H8/300 */ +#define EM_H8_300H 47 /* Hitachi H8/300H */ +#define EM_H8S 48 /* Hitachi H8S */ +#define EM_H8_500 49 /* Hitachi H8/500 */ +#define EM_IA_64 50 /* Intel Merced */ +#define EM_MIPS_X 51 /* Stanford MIPS-X */ +#define EM_COLDFIRE 52 /* Motorola Coldfire */ +#define EM_68HC12 53 /* Motorola M68HC12 */ +#define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/ +#define EM_PCP 55 /* Siemens PCP */ +#define EM_NCPU 56 /* Sony nCPU embeeded RISC */ +#define EM_NDR1 57 /* Denso NDR1 microprocessor */ +#define EM_STARCORE 58 /* Motorola Start*Core processor */ +#define EM_ME16 59 /* Toyota ME16 processor */ +#define EM_ST100 60 /* STMicroelectronic ST100 processor */ +#define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/ +#define EM_X86_64 62 /* AMD x86-64 architecture */ +#define EM_PDSP 63 /* Sony DSP Processor */ +#define EM_FX66 66 /* Siemens FX66 microcontroller */ +#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */ +#define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */ +#define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */ +#define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */ +#define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */ +#define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */ +#define EM_SVX 73 /* Silicon Graphics SVx */ +#define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */ +#define EM_VAX 75 /* Digital VAX */ +#define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */ +#define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded processor */ +#define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */ +#define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */ +#define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */ +#define EM_HUANY 81 /* Harvard University machine-independent object files */ +#define EM_PRISM 82 /* SiTera Prism */ +#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ +#define EM_FR30 84 /* Fujitsu FR30 */ +#define EM_D10V 85 /* Mitsubishi D10V */ +#define EM_D30V 86 /* Mitsubishi D30V */ +#define EM_V850 87 /* NEC v850 */ +#define EM_M32R 88 /* Mitsubishi M32R */ +#define EM_MN10300 89 /* Matsushita MN10300 */ +#define EM_MN10200 90 /* Matsushita MN10200 */ +#define EM_PJ 91 /* picoJava */ +#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */ +#define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */ +#define EM_XTENSA 94 /* Tensilica Xtensa Architecture */ +#define EM_AARCH64 183 /* ARM AARCH64 */ +#define EM_TILEPRO 188 /* Tilera TILEPro */ +#define EM_MICROBLAZE 189 /* Xilinx MicroBlaze */ +#define EM_TILEGX 191 /* Tilera TILE-Gx */ + + + +/* --------------------------- EN-TETE DES PROGRAMMES ELF --------------------------- */ + + +/* Version 32 et 64 bits */ + + +typedef struct _elf32_phdr +{ + uint32_t p_type; /* Type de segment */ + uint32_t p_offset; /* Position dans le fichier */ + uint32_t p_vaddr; /* Adresse virtuelle du segment*/ + uint32_t p_paddr; /* Adresse physique du segment */ + uint32_t p_filesz; /* Taille dans le fichier */ + uint32_t p_memsz; /* Taille en mémoire */ + uint32_t p_flags; /* Drapeaux pour le segment */ + uint32_t p_align; /* Alignement du segment */ + +} elf32_phdr; + +typedef struct _elf64_phdr +{ + uint32_t p_type; /* Type de segment */ + uint32_t p_flags; /* Drapeaux pour le segment */ + uint64_t p_offset; /* Position dans le fichier */ + uint64_t p_vaddr; /* Adresse virtuelle du segment*/ + uint64_t p_paddr; /* Adresse physique du segment */ + uint64_t p_filesz; /* Taille dans le fichier */ + uint64_t p_memsz; /* Taille en mémoire */ + uint64_t p_align; /* Alignement du segment */ + +} elf64_phdr; + +typedef union _elf_phdr +{ + elf32_phdr phdr32; /* Version 32 bits */ + elf64_phdr phdr64; /* Version 32 bits */ + +} elf_phdr; + + +#define ELF_PHDR(fmt, hdr, fld) (fmt->is_32b ? (hdr).phdr32.fld : (hdr).phdr64.fld) + +#define ELF_SIZEOF_PHDR(fmt) (fmt->is_32b ? sizeof(elf32_phdr) : sizeof(elf64_phdr)) + +/* Valeurs possibles pour p_type */ + +#define PT_NULL 0 /* Program header table entry unused */ +#define PT_LOAD 1 /* Loadable program segment */ +#define PT_DYNAMIC 2 /* Dynamic linking information */ +#define PT_INTERP 3 /* Program interpreter */ +#define PT_NOTE 4 /* Auxiliary information */ +#define PT_SHLIB 5 /* Reserved */ +#define PT_PHDR 6 /* Entry for header table itself */ +#define PT_TLS 7 /* Thread-local storage segment */ +#define PT_NUM 8 /* Number of defined types */ +#define PT_LOOS 0x60000000 /* Start of OS-specific */ +#define PT_GNU_EH_FRAME 0x6474e550 /* GCC .eh_frame_hdr segment */ +#define PT_GNU_STACK 0x6474e551 /* Indicates stack executability */ +#define PT_GNU_RELRO 0x6474e552 /* Read-only after relocation */ +#define PT_LOSUNW 0x6ffffffa +#define PT_SUNWBSS 0x6ffffffa /* Sun Specific segment */ +#define PT_SUNWSTACK 0x6ffffffb /* Stack segment */ +#define PT_HISUNW 0x6fffffff +#define PT_HIOS 0x6fffffff /* End of OS-specific */ +#define PT_LOPROC 0x70000000 /* Start of processor-specific */ +#define PT_HIPROC 0x7fffffff /* End of processor-specific */ + +/* Valeurs possibles pour p_flags */ + +#define PF_X (1 << 0) /* Le segment est exécutable */ +#define PF_W (1 << 1) /* Le segment est écrasable */ +#define PF_R (1 << 2) /* Le segment est lisible */ +#define PF_MASKOS 0x0ff00000 /* Spécifique à l'OS */ +#define PF_MASKPROC 0xf0000000 /* Spécifique au processeur */ + + + +/* ---------------------------- EN-TETE DES SECTIONS ELF ---------------------------- */ + + +/* Version 32 et 64 bits */ + +typedef struct _elf32_shdr +{ + uint32_t sh_name; /* Indice du nom de la section */ + uint32_t sh_type; /* Type de section */ + uint32_t sh_flags; /* Drapeaux pour la section */ + uint32_t sh_addr; /* Adresse virtuelle à l'exec. */ + uint32_t sh_offset; /* Position dans le fichier */ + uint32_t sh_size; /* Taille en octets */ + uint32_t sh_link; /* Lien vers une autre section */ + uint32_t sh_info; /* Infos. complémentaires */ + uint32_t sh_addralign; /* Alignement de la section */ + uint32_t sh_entsize; /* Eventuelle taille d'élément */ + +} elf32_shdr; + +typedef struct _elf64_shdr +{ + uint32_t sh_name; /* Indice du nom de la section */ + uint32_t sh_type; /* Type de section */ + uint64_t sh_flags; /* Drapeaux pour la section */ + uint64_t sh_addr; /* Adresse virtuelle à l'exec. */ + uint64_t sh_offset; /* Position dans le fichier */ + uint64_t sh_size; /* Taille en octets */ + uint32_t sh_link; /* Lien vers une autre section */ + uint32_t sh_info; /* Infos. complémentaires */ + uint64_t sh_addralign; /* Alignement de la section */ + uint64_t sh_entsize; /* Eventuelle taille d'élément */ + +} elf64_shdr; + +typedef union _elf_shdr +{ + elf32_shdr shdr32; /* Version 32 bits */ + elf64_shdr shdr64; /* Version 64 bits */ + +} elf_shdr; + + +#define ELF_SHDR(fmt, shdr, fld) (fmt->is_32b ? (shdr).shdr32.fld : (shdr).shdr64.fld) + +#define ELF_SIZEOF_SHDR(fmt) (fmt->is_32b ? sizeof(elf32_shdr) : sizeof(elf64_shdr)) + + +/* Valeurs possibles pour sh_type */ + +#define SHT_NULL 0 /* Entrée non utilisée */ +#define SHT_PROGBITS 1 /* Données de programme */ +#define SHT_SYMTAB 2 /* Table des symboles */ +#define SHT_STRTAB 3 /* Table de chaînes de carac. */ + +#define SHT_RELA 4 /* Relocation entries with addends */ +#define SHT_HASH 5 /* Symbol hash table */ + +#define SHT_DYNAMIC 6 /* Info. de liaison dynamique */ + +#define SHT_NOTE 7 /* Notes */ +#define SHT_NOBITS 8 /* Program space with no data (bss) */ +#define SHT_REL 9 /* Relocation entries, no addends */ +#define SHT_SHLIB 10 /* Reserved */ +#define SHT_DYNSYM 11 /* Dynamic linker symbol table */ +#define SHT_INIT_ARRAY 14 /* Array of constructors */ +#define SHT_FINI_ARRAY 15 /* Array of destructors */ +#define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */ +#define SHT_GROUP 17 /* Section group */ +#define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */ +#define SHT_NUM 19 /* Number of defined types. */ +#define SHT_LOOS 0x60000000 /* Start OS-specific. */ +#define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* Object attributes. */ +#define SHT_GNU_HASH 0x6ffffff6 /* GNU-style hash table. */ +#define SHT_GNU_LIBLIST 0x6ffffff7 /* Prelink library list */ +#define SHT_CHECKSUM 0x6ffffff8 /* Checksum for DSO content. */ +#define SHT_LOSUNW 0x6ffffffa /* Sun-specific low bound. */ +#define SHT_SUNW_move 0x6ffffffa +#define SHT_SUNW_COMDAT 0x6ffffffb +#define SHT_SUNW_syminfo 0x6ffffffc +#define SHT_GNU_verdef 0x6ffffffd /* Version definition section. */ +#define SHT_GNU_verneed 0x6ffffffe /* Version needs section. */ +#define SHT_GNU_versym 0x6fffffff /* Version symbol table. */ +#define SHT_HISUNW 0x6fffffff /* Sun-specific high bound. */ +#define SHT_HIOS 0x6fffffff /* End OS-specific type */ +#define SHT_LOPROC 0x70000000 /* Start of processor-specific */ +#define SHT_HIPROC 0x7fffffff /* End of processor-specific */ +#define SHT_LOUSER 0x80000000 /* Start of application-specific */ +#define SHT_HIUSER 0x8fffffff /* End of application-specific */ + + +/* Valeurs possibles pour sh_flags */ + +#define SHF_WRITE (1 << 0) /* Accessible en écriture */ +#define SHF_ALLOC (1 << 1) /* Copie en mémoire pdt l'exec.*/ +#define SHF_EXECINSTR (1 << 2) /* Section exécutable */ +#define SHF_MERGE (1 << 4) /* Peut être fusionné */ +#define SHF_STRINGS (1 << 5) /* Contient des chaînes ('\0') */ +#define SHF_INFO_LINK (1 << 6) /* 'sh_info' contient un index */ +#define SHF_LINK_ORDER (1 << 7) /* Préservation de l'ordre */ +#define SHF_OS_NONCONFORMING (1 << 8) /* Gestion non standard requise*/ +#define SHF_GROUP (1 << 9) /* Section membre d'un groupe */ +#define SHF_TLS (1 << 10) /* Données pour un thread local*/ + +#define SHF_MASKOS 0x0ff00000 /* OS-specific. */ +#define SHF_MASKPROC 0xf0000000 /* Processor-specific */ +#define SHF_ORDERED (1 << 30) /* Special ordering requirement + (Solaris). */ +#define SHF_EXCLUDE (1 << 31) /* Section is excluded unless + referenced or allocated (Solaris).*/ + + + + + +/* ----------------------------- DONNEES POUR LE LINKER ----------------------------- */ + + +/* Entrées de la section dynamique (version 32 et 64 bits) */ + +typedef struct _elf32_dyn +{ + int32_t d_tag; /* Type de l'entrée */ + + union + { + uint32_t d_val; /* Valeur entière */ + uint32_t d_ptr; /* Valeur d'adresse */ + + } d_un; + +} elf32_dyn; + +typedef struct _elf64_dyn +{ + int64_t d_tag; /* Type de l'entrée */ + + union + { + uint64_t d_val; /* Valeur entière */ + uint64_t d_ptr; /* Valeur d'adresse */ + + } d_un; + +} elf64_dyn; + +typedef union _elf_dyn +{ + elf32_dyn dyn32; /* Version 32 bits */ + elf64_dyn dyn64; /* Version 32 bits */ + +} elf_dyn; + + +#define ELF_DYN(fmt, dyn, fld) (fmt->is_32b ? (dyn).dyn32.fld : (dyn).dyn64.fld) + +#define ELF_SIZEOF_DYN(fmt) (fmt->is_32b ? sizeof(elf32_dyn) : sizeof(elf64_dyn)) + + + +/* Valeurs possibles pour d_tag */ + +#define DT_SYMTAB 6 /* Table des symboles */ +#define DT_JMPREL 23 /* Relocalisations PLT */ + + +#define DT_PLTGOT 3 /* Processor defined value */ + +#define DT_INIT 12 /* Address of init function */ +#define DT_FINI 13 /* Address of termination function */ + +#define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ +#define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ +#define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ +#define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ + +#define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ +#define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ + + + +/* ---------------------------- SYMBOLES DE BINAIRES ELF ---------------------------- */ + + +/* Elément de la table des symboles */ + +typedef struct _elf32_sym +{ + uint32_t st_name; /* Indice pour le nom */ + uint32_t st_value; /* Valeur du symbole */ + uint32_t st_size; /* Taille du symbole */ + unsigned char st_info; /* Type et infos. du symbole */ + unsigned char st_other; /* Visibilité du symbole */ + uint16_t st_shndx; /* Indice de la section */ + +} elf32_sym; + +typedef struct _elf64_sym +{ + uint32_t st_name; /* Indice pour le nom */ + unsigned char st_info; /* Type et infos. du symbole */ + unsigned char st_other; /* Visibilité du symbole */ + uint16_t st_shndx; /* Indice de la section */ + uint64_t st_value; /* Valeur du symbole */ + uint64_t st_size; /* Taille du symbole */ + +} elf64_sym; + +typedef union _elf_sym +{ + elf32_sym sym32; /* Version 32 bits */ + elf64_sym sym64; /* Version 64 bits */ + +} elf_sym; + + +#define ELF_SYM(fmt, sb, fld) (fmt->is_32b ? (sb).sym32.fld : (sb).sym64.fld) + +#define ELF_ST_BIND(fmt, sym) (fmt->is_32b ? ELF32_ST_BIND(sym.sym32.st_info) : ELF64_ST_BIND(sym.sym64.st_info)) +#define ELF_ST_TYPE(fmt, sym) (fmt->is_32b ? ELF32_ST_TYPE(sym.sym32.st_info) : ELF64_ST_TYPE(sym.sym64.st_info)) + +#define ELF_SIZEOF_SYM(fmt) (fmt->is_32b ? sizeof(elf32_sym) : sizeof(elf64_sym)) + + +/* Extraction des informations de st_info */ + +#define ELF32_ST_BIND(val) (((unsigned char)(val)) >> 4) +#define ELF32_ST_TYPE(val) ((val) & 0xf) + +#define ELF64_ST_BIND(val) ELF32_ST_BIND(val) +#define ELF64_ST_TYPE(val) ELF32_ST_TYPE(val) + +/* Valeurs pour le sous-champ ST_TYPE de st_info */ + +#define STT_NOTYPE 0 /* Type de symbole non spécifié*/ +#define STT_OBJECT 1 /* Symbole, objet de données */ +#define STT_FUNC 2 /* Symbole, objet de code */ + + + +/* ------------------------- INFORMATIONS DE RELOCALISATION ------------------------- */ + + +/* Entrée de la table de relocalisation */ + +typedef struct _elf32_rel +{ + uint32_t r_offset; /* Adresse */ + uint32_t r_info; /* Indice de type et symbole */ + +} elf32_rel; + +typedef struct _elf64_rel +{ + uint64_t r_offset; /* Adresse */ + uint64_t r_info; /* Indice de type et symbole */ + +} elf64_rel; + +typedef union _elf_rel +{ + elf32_rel rel32; /* Version 32 bits */ + elf64_rel rel64; /* Version 64 bits */ + +} elf_rel; + + +#define ELF_REL(fmt, rl, fld) (fmt->is_32b ? (rl).rel32.fld : (rl).rel64.fld) + +#define ELF_REL_SYM(fmt, rl) (fmt->is_32b ? ELF32_R_SYM(rl.rel32.r_info) : ELF64_R_SYM(rl.rel64.r_info)) +#define ELF_REL_TYPE(fmt, rl) (fmt->is_32b ? ELF32_R_TYPE(rl.rel32.r_info) : ELF64_R_TYPE(rl.rel64.r_info)) + +#define ELF_SIZEOF_REL(fmt) (fmt->is_32b ? sizeof(elf32_rel) : sizeof(elf64_rel)) + + +/* Extraction des informations de r_info */ + +#define ELF32_R_SYM(val) ((val) >> 8) +#define ELF32_R_TYPE(val) ((val) & 0xff) + +#define ELF64_R_SYM(val) ((val) >> 32) +#define ELF64_R_TYPE(val) ((val) & 0xffffffff) + +/* Type de relocalisation (x86) */ + +#define R_386_NONE 0 /* Pas de relocalisation */ +#define R_386_JMP_SLOT 7 /* Entrée PLT */ + +/* Type de relocalisation (ARM) */ + +#define R_ARM_JUMP_SLOT 22 /* Create PLT entry */ + + + +/* --------------------------- NOTES ARBITRAIRES LAISSEES --------------------------- */ + + +/** + * Notes contenues dans un fichier ELF. + * Se rapporter au chapitre 5, partie "Note Section", des spécifications ABI + * du Système V pour d'avantage d'informations. + */ + +typedef struct _elf_note +{ + uint32_t namesz; /* Taille du nom éventuel */ + uint32_t descsz; /* Qté de données éventuelles */ + uint32_t type; /* Indication supplémentaire */ + + const char *name; /* Auteur de la note */ + const void *desc; /* Données complémentaires */ + +} elf_note; + + + +#endif /* _FORMAT_ELF_ELF_DEF_H */ diff --git a/plugins/elf/elf_def_arm.h b/plugins/elf/elf_def_arm.h new file mode 100644 index 0000000..5b0191e --- /dev/null +++ b/plugins/elf/elf_def_arm.h @@ -0,0 +1,45 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * elf_def_arm.h - liste des structures et constantes utilisées par le format ELF et dédiées à ARM + * + * Copyright (C) 2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_ELF_DEF_ARM_H +#define _FORMAT_ELF_ELF_DEF_ARM_H + + +#include "elf_def.h" + + + +/* Valeurs spécifiques pour le champ p_type des en-tête de programme */ + +#define PT_ARM_EXIDX (PT_LOPROC + 1) /* ARM unwind segment */ + + +/* Valeurs spécifiques pour le champ sh_type des en-têtes de section */ + +#define SHT_ARM_EXIDX (SHT_LOPROC + 1) /* ARM unwind section */ +#define SHT_ARM_PREEMPTMAP (SHT_LOPROC + 2) /* Preemption details */ +#define SHT_ARM_ATTRIBUTES (SHT_LOPROC + 3) /* ARM attributes section */ + + + +#endif /* _FORMAT_ELF_ELF_DEF_ARM_H */ diff --git a/plugins/elf/helper_arm.c b/plugins/elf/helper_arm.c new file mode 100644 index 0000000..737e4ac --- /dev/null +++ b/plugins/elf/helper_arm.c @@ -0,0 +1,173 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * helper_x86.c - gestion auxiliaire de l'architecture x86 + * + * Copyright (C) 2014-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "helper_arm.h" + + +#include <assert.h> + + +#include <format/mangling/demangler.h> + + +#include "elf_def_arm.h" +#include "elf-int.h" +#include "symbols.h" + + + +/****************************************************************************** +* * +* Paramètres : p_type = type associé à un en-tête de programme. * +* * +* Description : Fournit la description humaine d'un type de segment ELF. * +* * +* Retour : Désignation prête à emploi ou NULL si aucune. * +* * +* Remarques : - * +* * +******************************************************************************/ + +const char *get_elf_program_arm_type_desc(uint32_t p_type) +{ + const char *result; /* Description à renvoyer */ + +#define MAKE_STRING_FROM_PT(pt) case pt: result = #pt; break; + + switch(p_type) + { + MAKE_STRING_FROM_PT(PT_ARM_EXIDX); + + default: + result = NULL; + break; + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à compléter. * +* relxxx = section .rel.xxx trouvée (zone à traiter). * +* dynsym = section .dynsym trouvée (info. dynamiques). * +* dynstr = section .dynstr trouvée (chaînes de caractères). * +* * +* Description : Charge en mémoire la liste des symboles relogés. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool load_elf_arm_relocated_symbols(GElfFormat *format, const elf_shdr *relxxx, const elf_shdr *dynsym, const elf_shdr *dynstr) +{ + bool result; /* Bilan à retourner */ + phys_t rel_start; /* Début de la zone à traiter */ + phys_t rel_size; /* Taille de cette même zone */ + GBinFormat *base; /* Autre version du format */ + phys_t iter; /* Boucle de parcours */ + elf_rel reloc; /* Infos de relocalisation */ + off_t index; /* Indice de la portion visée */ + elf_sym sym; /* Définition complète */ + const char *name; /* Nom du symbole trouvé */ + + + + virt_t virt; /* Adresse en mémoire virtuelle*/ + virt_t final_virt; /* Adresse virtuelle retenue */ + bool status; /* Bilan d'une opération */ + vmpa2t addr; /* Localisation d'une routine */ + GBinRoutine *routine; /* Nouvelle routine trouvée */ + GBinSymbol *symbol; /* Nouveau symbole construit */ + mrange_t range; /* Couverture mémoire associée */ + + + + + result = true; + + + + get_elf_section_content(format, relxxx, &rel_start, &rel_size, NULL); + + base = G_BIN_FORMAT(format); + + for (iter = rel_start; iter < (rel_start + rel_size); ) + { + result = read_elf_relocation(format, &iter, &reloc); + if (!result) break; + + index = ELF_REL_SYM(format, reloc); + + if (!get_elf_symbol_by_index(format, dynsym, index, &sym)) + continue; + + name = get_elf_symbol_name(format, dynsym, dynstr, index); + if (name == NULL) + { + /* FIXME */ + name = "unknown"; + } + + switch (ELF_REL_TYPE(format, reloc)) + { + case R_ARM_JUMP_SLOT: + + virt = ELF_SYM(format, sym, st_value); + if (virt == 0) continue; + + final_virt = virt & ~0x1; + + status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_virt, &addr); + if (!status) continue; + + routine = try_to_demangle_routine(name); + symbol = G_BIN_SYMBOL(routine); + + init_mrange(&range, &addr, 0); + g_binary_symbol_set_range(symbol, &range); + + /* Comptabilisation pour le désassemblage brut */ + g_binary_format_register_code_point(base, virt, false); + + break; + + default: + assert(false); + symbol = NULL; + break; + + } + + if (symbol != NULL) + g_binary_format_add_symbol(base, symbol); + + } + + return result; + +} diff --git a/plugins/elf/helper_arm.h b/plugins/elf/helper_arm.h new file mode 100644 index 0000000..e971ed6 --- /dev/null +++ b/plugins/elf/helper_arm.h @@ -0,0 +1,40 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * helper_arm.h - prototypes pour la gestion auxiliaire de l'architecture ARM + * + * Copyright (C) 2014-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_HELPER_ARM_H +#define _FORMAT_ELF_HELPER_ARM_H + + +#include "section.h" + + + +/* Fournit la description humaine d'un type de segment ELF. */ +const char *get_elf_program_arm_type_desc(uint32_t); + +/* Charge en mémoire la liste des symboles relogés. */ +bool load_elf_arm_relocated_symbols(GElfFormat *, const elf_shdr *, const elf_shdr *, const elf_shdr *); + + + +#endif /* _FORMAT_ELF_HELPER_ARM_H */ diff --git a/plugins/elf/loading.c b/plugins/elf/loading.c new file mode 100644 index 0000000..168c9c6 --- /dev/null +++ b/plugins/elf/loading.c @@ -0,0 +1,291 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * loading.c - chargements parallèles des symboles de format ELF + * + * Copyright (C) 2016-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "loading.h" + + +#include <i18n.h> +#include <glibext/delayed-int.h> +#include <gui/panels/log.h> + + +#include "elf-int.h" +#include "section.h" + + + +/* Fraction de routines à limiter (instance) */ +struct _GElfLoading +{ + GDelayedWork parent; /* A laisser en premier */ + + GElfFormat *format; /* Format à faire évoluer */ + + union + { + struct + { + const elf_shdr *section; /* Section à éplucher */ + bool use_virt; /* Représentatio par défaut */ + + elf_shdr strtab; /* Section .strtab trouvée */ + bool has_strtab; /* Présence de cette section */ + + }; + + }; + + elf_loading_cb callback; /* Routine de traitement finale*/ + phys_t first; /* Position du premier élément */ + phys_t begin; /* Point de départ du parcours */ + phys_t end; /* Point d'arrivée exclu */ + + activity_id_t id; /* Identifiant pour messages */ + +}; + +/* Fraction de routines à limiter (classe) */ +struct _GElfLoadingClass +{ + GDelayedWorkClass parent; /* A laisser en premier */ + +}; + + +/* Initialise la classe des tâches des chargements pour ELF. */ +static void g_elf_loading_class_init(GElfLoadingClass *); + +/* Initialise une tâche de chargements pour ELF. */ +static void g_elf_loading_init(GElfLoading *); + +/* Supprime toutes les références externes. */ +static void g_elf_loading_dispose(GElfLoading *); + +/* Procède à la libération totale de la mémoire. */ +static void g_elf_loading_finalize(GElfLoading *); + +/* Assure le chargement pour un format ELF en différé. */ +static void g_elf_loading_process(GElfLoading *, GtkStatusStack *); + + + +/* Indique le type défini pour les tâches de chargements pour format ELF. */ +G_DEFINE_TYPE(GElfLoading, g_elf_loading, G_TYPE_DELAYED_WORK); + + +/****************************************************************************** +* * +* Paramètres : klass = classe à initialiser. * +* * +* Description : Initialise la classe des tâches des chargements pour ELF. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_loading_class_init(GElfLoadingClass *klass) +{ + GObjectClass *object; /* Autre version de la classe */ + GDelayedWorkClass *work; /* Version en classe parente */ + + object = G_OBJECT_CLASS(klass); + + object->dispose = (GObjectFinalizeFunc/* ! */)g_elf_loading_dispose; + object->finalize = (GObjectFinalizeFunc)g_elf_loading_finalize; + + work = G_DELAYED_WORK_CLASS(klass); + + work->run = (run_task_fc)g_elf_loading_process; + +} + + +/****************************************************************************** +* * +* Paramètres : loading = instance à initialiser. * +* * +* Description : Initialise une tâche de chargements pour ELF. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_loading_init(GElfLoading *loading) +{ + +} + + +/****************************************************************************** +* * +* Paramètres : loading = instance d'objet GLib à traiter. * +* * +* Description : Supprime toutes les références externes. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_loading_dispose(GElfLoading *loading) +{ + G_OBJECT_CLASS(g_elf_loading_parent_class)->dispose(G_OBJECT(loading)); + +} + + +/****************************************************************************** +* * +* Paramètres : loading = instance d'objet GLib à traiter. * +* * +* Description : Procède à la libération totale de la mémoire. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_loading_finalize(GElfLoading *loading) +{ + G_OBJECT_CLASS(g_elf_loading_parent_class)->finalize(G_OBJECT(loading)); + +} + + +/****************************************************************************** +* * +* Paramètres : format = = ensemble d'instructions désassemblées. * +* section = prototypes existants à insérer. * +* use_virt = quantité de ces prototypes. * +* first = position du premier élément. * +* begin = point de départ du parcours de liste. * +* end = point d'arrivée exclu du parcours. * +* id = identifiant du message affiché à l'utilisateur. * +* callback = routine de traitements particuliers. * +* * +* Description : Crée une tâche de chargement pour ELF différée. * +* * +* Retour : Tâche créée. * +* * +* Remarques : - * +* * +******************************************************************************/ + +GElfLoading *g_elf_loading_new(GElfFormat *format, const elf_shdr *section, bool use_virt, phys_t first, phys_t begin, phys_t end, activity_id_t id, elf_loading_cb callback) +{ + GElfLoading *result; /* Tâche à retourner */ + + result = g_object_new(G_TYPE_ELF_LOADING, NULL); + + result->format = format; + + result->section = section; + result->use_virt = use_virt; + + result->has_strtab = find_elf_section_by_index(format, + ELF_SHDR(format, *section, sh_link), + &result->strtab); + + result->callback = callback; + result->first = first; + result->begin = begin; + result->end = end; + + result->id = id; + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : study = étude de routines à mener. * +* status = barre de statut à tenir informée. * +* * +* Description : Assure le chargement pour un format ELF en différé. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_elf_loading_process(GElfLoading *loading, GtkStatusStack *status) +{ + phys_t iter; /* Boucle de parcours */ + phys_t old; /* Sauvegarde du point d'avant */ + bool ret; /* Bilan d'un appel */ + + for (iter = loading->begin; iter < loading->end; ) + { + old = iter; + ret = loading->callback(loading, loading->format, &iter); + + if (!ret) + { + log_variadic_message(LMT_ERROR, _("Error while loading ELF data @ 0x%08x!"), old); + break; + } + + gtk_status_stack_update_activity_value(status, loading->id, 1); + + } + +} + + +/****************************************************************************** +* * +* Paramètres : loading = chargement pour ELF à mener. * +* section = prototypes existants à insérer. [OUT] * +* use_virt = quantité de ces prototypes. [OUT] * +* strtab = informations quant à la table des chaînes. [OUT]* +* has_strtab = validité du champ précédemment renseigné. [OUT] * +* first = position du premier élément. [OUT] * +* * +* Description : Fournit les infos utiles au chargement de symbols internes. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void g_elf_loading_get_internal_info(GElfLoading *loading, const elf_shdr **section, bool *use_virt, const elf_shdr **strtab, bool *has_strtab, phys_t *first) +{ + *section = loading->section; + *use_virt = loading->use_virt; + + *strtab = &loading->strtab; + *has_strtab = loading->has_strtab; + + *first = loading->first; + +} diff --git a/plugins/elf/loading.h b/plugins/elf/loading.h new file mode 100644 index 0000000..ff5d7bb --- /dev/null +++ b/plugins/elf/loading.h @@ -0,0 +1,73 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * loading.h - prototypes pour les chargements parallèles des symboles de format ELF + * + * Copyright (C) 2016-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_LOADING_H +#define _FORMAT_ELF_LOADING_H + + +#include <gtkext/gtkstatusstack.h> + + +#include "elf.h" + + + + +//#include "../routine.h" +//#include "../../arch/processor.h" +//#include "../../format/executable.h" +//#include "../../gtkext/gtkstatusstack.h" + + + +#define G_TYPE_ELF_LOADING g_elf_loading_get_type() +#define G_ELF_LOADING(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), g_elf_loading_get_type(), GElfLoading)) +#define G_IS_ELF_LOADING(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), g_elf_loading_get_type())) +#define G_ELF_LOADING_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_ELF_LOADING, GElfLoadingClass)) +#define G_IS_ELF_LOADING_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_ELF_LOADING)) +#define G_ELF_LOADING_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_ELF_LOADING, GElfLoadingClass)) + + +/* Fraction de loading à limiter (instance) */ +typedef struct _GElfLoading GElfLoading; + +/* Fraction de loading à limiter (classe) */ +typedef struct _GElfLoadingClass GElfLoadingClass; + + +/* Assure un chargement pour ELF en différé. */ +typedef bool (* elf_loading_cb) (GElfLoading *, GElfFormat *, phys_t *); + + +/* Indique le type défini pour les tâches de chargements pour format ELF. */ +GType g_elf_loading_get_type(void); + +/* Crée une tâche de chargement pour ELF différée. */ +GElfLoading *g_elf_loading_new(GElfFormat *, const elf_shdr *, bool, phys_t, phys_t, phys_t, activity_id_t, elf_loading_cb); + +/* Fournit les infos utiles au chargement de symbols internes. */ +void g_elf_loading_get_internal_info(GElfLoading *, const elf_shdr **, bool *, const elf_shdr **, bool *, phys_t *); + + + +#endif /* _FORMAT_ELF_LOADING_H */ diff --git a/plugins/elf/program.c b/plugins/elf/program.c new file mode 100644 index 0000000..3016feb --- /dev/null +++ b/plugins/elf/program.c @@ -0,0 +1,217 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * program.c - gestion des en-têtes de programme d'un ELF + * + * Copyright (C) 2010-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "program.h" + + +#include "elf-int.h" +#include "helper_arm.h" + + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* p_type = type associé à un en-tête de programme. * +* * +* Description : Fournit la description humaine d'un type de segment ELF. * +* * +* Retour : Désignation prête à emploi. * +* * +* Remarques : - * +* * +******************************************************************************/ + +const char *get_elf_program_type_desc(const GElfFormat *format, uint32_t p_type) +{ + const char *result; /* Description à renvoyer */ + +#define MAKE_STRING_FROM_PT(pt) case pt: result = #pt; break; + + switch(p_type) + { + MAKE_STRING_FROM_PT(PT_NULL); + MAKE_STRING_FROM_PT(PT_LOAD); + MAKE_STRING_FROM_PT(PT_DYNAMIC); + MAKE_STRING_FROM_PT(PT_INTERP); + MAKE_STRING_FROM_PT(PT_NOTE); + MAKE_STRING_FROM_PT(PT_SHLIB); + MAKE_STRING_FROM_PT(PT_PHDR); + MAKE_STRING_FROM_PT(PT_TLS); + MAKE_STRING_FROM_PT(PT_NUM); + MAKE_STRING_FROM_PT(PT_LOOS); + MAKE_STRING_FROM_PT(PT_GNU_EH_FRAME); + MAKE_STRING_FROM_PT(PT_GNU_STACK); + MAKE_STRING_FROM_PT(PT_GNU_RELRO); + MAKE_STRING_FROM_PT(PT_LOSUNW); + MAKE_STRING_FROM_PT(PT_SUNWSTACK); + MAKE_STRING_FROM_PT(PT_HIOS); + MAKE_STRING_FROM_PT(PT_LOPROC); + MAKE_STRING_FROM_PT(PT_HIPROC); + + default: + result = NULL; + break; + + } + + if (result == NULL) + switch (ELF_HDR(format, format->header, e_machine)) + { + case EM_ARM: + result = get_elf_program_arm_type_desc(p_type); + break; + + default: + break; + + } + + if (result == NULL) + switch(p_type) + { + MAKE_STRING_FROM_PT(PT_LOOS); + MAKE_STRING_FROM_PT(PT_HIOS); + MAKE_STRING_FROM_PT(PT_LOPROC); + MAKE_STRING_FROM_PT(PT_HIPROC); + + default: + result = "PT_???"; + break; + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* index = indice de la section recherchée. * +* program = ensemble d'informations à faire remonter. [OUT] * +* * +* Description : Recherche un programme donné au sein de binaire par indice. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_program_by_index(const GElfFormat *format, uint16_t index, elf_phdr *program) +{ + off_t offset; /* Emplacement à venir lire */ + + if (index >= ELF_HDR(format, format->header, e_phnum)) return false; + + offset = ELF_HDR(format, format->header, e_phoff) + + ELF_HDR(format, format->header, e_phentsize) * index; + + return read_elf_program_header(format, offset, program); + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* off = position physique à retrouver. * +* pos = position correspondante. [OUT] * +* * +* Description : Fournit l'emplacement correspondant à une position physique. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool translate_offset_into_vmpa_using_elf_programs(const GElfFormat *format, phys_t off, vmpa2t *pos) +{ + bool result; /* Bilan à retourner */ + uint16_t i; /* Boucle de parcours */ + elf_phdr program; /* Programme à analyser */ + virt_t addr; /* Adresse virtuelle calculée */ + + result = false; + + for (i = 0; i < ELF_HDR(format, format->header, e_phnum) && !result; i++) + { + find_elf_program_by_index(format, i, &program); + + if (ELF_PHDR(format, program, p_offset) <= off + && off < (ELF_PHDR(format, program, p_offset) + ELF_PHDR(format, program, p_filesz))) + { + addr = ELF_PHDR(format, program, p_vaddr) + ELF_PHDR(format, program, p_offset) - off; + init_vmpa(pos, off, addr); + result = true; + } + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* addr = adresse virtuelle à retrouver. * +* pos = position correspondante. [OUT] * +* * +* Description : Fournit l'emplacement correspondant à une adresse virtuelle. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool translate_address_into_vmpa_using_elf_programs(const GElfFormat *format, virt_t addr, vmpa2t *pos) +{ + bool result; /* Bilan à retourner */ + uint16_t i; /* Boucle de parcours */ + elf_phdr program; /* Programme à analyser */ + phys_t off; /* Position physique calculée */ + + result = false; + + for (i = 0; i < ELF_HDR(format, format->header, e_phnum) && !result; i++) + { + find_elf_program_by_index(format, i, &program); + + if (ELF_PHDR(format, program, p_vaddr) <= addr + && addr < (ELF_PHDR(format, program, p_vaddr) + ELF_PHDR(format, program, p_filesz))) + { + off = ELF_PHDR(format, program, p_offset) + addr - ELF_PHDR(format, program, p_vaddr); + init_vmpa(pos, off, addr); + result = true; + } + + } + + return result; + +} diff --git a/plugins/elf/program.h b/plugins/elf/program.h new file mode 100644 index 0000000..bf05d2a --- /dev/null +++ b/plugins/elf/program.h @@ -0,0 +1,47 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * program.h - prototypes pour la gestion des en-têtes de programme d'un ELF + * + * Copyright (C) 2010-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_PROGRAM_H +#define _FORMAT_ELF_PROGRAM_H + + +#include "elf.h" +#include "elf_def.h" + + + +/* Fournit la description humaine d'un type de segment ELF. */ +const char *get_elf_program_type_desc(const GElfFormat *, uint32_t); + +/* Recherche un programme donné au sein de binaire par indice. */ +bool find_elf_program_by_index(const GElfFormat *, uint16_t, elf_phdr *); + +/* Fournit l'emplacement correspondant à une position physique. */ +bool translate_offset_into_vmpa_using_elf_programs(const GElfFormat *, phys_t, vmpa2t *); + +/* Fournit l'emplacement correspondant à une adresse virtuelle. */ +bool translate_address_into_vmpa_using_elf_programs(const GElfFormat *, virt_t, vmpa2t *); + + + +#endif /* _FORMAT_ELF_PROGRAM_H */ diff --git a/plugins/pychrysa/format/elf/Makefile.am b/plugins/elf/python/Makefile.am index b8f9074..4de3e3c 100644 --- a/plugins/pychrysa/format/elf/Makefile.am +++ b/plugins/elf/python/Makefile.am @@ -1,15 +1,15 @@ -noinst_LTLIBRARIES = libpychrysaformatelf.la +noinst_LTLIBRARIES = libelfpython.la -libpychrysaformatelf_la_SOURCES = \ +libelfpython_la_SOURCES = \ elf.h elf.c \ module.h module.c -libpychrysaformatelf_la_LDFLAGS = +libelfpython_la_LDFLAGS = AM_CPPFLAGS = $(LIBGTK_CFLAGS) $(LIBXML_CFLAGS) $(LIBPYTHON_CFLAGS) $(LIBPYGOBJECT_CFLAGS) \ - -I../../../../src + -I../../../src -I../../.. AM_CFLAGS = $(DEBUG_CFLAGS) $(WARNING_FLAGS) $(COMPLIANCE_FLAGS) diff --git a/plugins/pychrysa/format/elf/elf.c b/plugins/elf/python/elf.c index 102c60d..1f5ddb2 100644 --- a/plugins/pychrysa/format/elf/elf.c +++ b/plugins/elf/python/elf.c @@ -29,14 +29,14 @@ #include <i18n.h> +#include <format/executable.h> +#include <analysis/content.h> +#include <plugins/pychrysa/helpers.h> +#include <plugins/pychrysa/analysis/content.h> +#include <plugins/pychrysa/format/executable.h> -#include <format/elf/elf.h> - - -#include "../executable.h" -#include "../../analysis/content.h" -#include "../../helpers.h" +#include "../elf.h" @@ -71,17 +71,9 @@ static PyObject *py_elf_format_new(PyTypeObject *type, PyObject *args, PyObject GtkStatusStack *status; /* Instance GTK de suivi */ GBinFormat *format; /* Création GLib à transmettre */ - - ret = PyArg_ParseTuple(args, "OOO", &content_obj, &parent_obj, &status_obj); + ret = PyArg_ParseTuple(args, "O!OO", get_python_binary_content_type(), &content_obj, &parent_obj, &status_obj); if (!ret) return NULL; - ret = PyObject_IsInstance(content_obj, (PyObject *)get_python_binary_content_type()); - if (!ret) - { - PyErr_SetString(PyExc_TypeError, _("The first argument must be an instance of BinContent.")); - return NULL; - } - content = G_BIN_CONTENT(pygobject_get(content_obj)); if (parent_obj == Py_None) diff --git a/plugins/pychrysa/format/elf/elf.h b/plugins/elf/python/elf.h index cf6a706..cf6a706 100644 --- a/plugins/pychrysa/format/elf/elf.h +++ b/plugins/elf/python/elf.h diff --git a/plugins/pychrysa/format/elf/module.c b/plugins/elf/python/module.c index 421e4d2..faf0458 100644 --- a/plugins/pychrysa/format/elf/module.c +++ b/plugins/elf/python/module.c @@ -25,13 +25,19 @@ #include "module.h" +#include <Python.h> + + +#include <plugins/pychrysa/access.h> + + #include "elf.h" /****************************************************************************** * * -* Paramètres : module = module dont la définition est à compléter. * +* Paramètres : - * * * * Description : Ajoute le module 'format.elf' au module Python. * * * @@ -41,9 +47,10 @@ * * ******************************************************************************/ -bool add_format_elf_module_to_python_module(PyObject *super) +bool add_format_elf_module_to_python_module(void) { bool result; /* Bilan à retourner */ + PyObject *super; /* Module à compléter */ PyObject *module; /* Sous-module mis en place */ int ret; /* Bilan d'un appel */ @@ -60,6 +67,8 @@ bool add_format_elf_module_to_python_module(PyObject *super) result = false; + super = get_access_to_python_module("pychrysalide.format"); + module = PyModule_Create(&py_chrysalide_elf_module); if (module == NULL) return false; @@ -73,9 +82,7 @@ bool add_format_elf_module_to_python_module(PyObject *super) ret = PyModule_AddObject(super, "elf", module); if (ret != 0) goto loading_failed; - result = true; - - result &= register_python_elf_format(module); + result = register_python_elf_format(module); loading_failed: diff --git a/plugins/pychrysa/format/elf/module.h b/plugins/elf/python/module.h index 998674f..de3ce42 100644 --- a/plugins/pychrysa/format/elf/module.h +++ b/plugins/elf/python/module.h @@ -26,13 +26,12 @@ #define _PLUGINS_PYCHRYSA_FORMAT_ELF_MODULE_H -#include <Python.h> #include <stdbool.h> /* Ajoute le module 'format.elf' au module Python. */ -bool add_format_elf_module_to_python_module(PyObject *); +bool add_format_elf_module_to_python_module(void); diff --git a/plugins/elf/section.c b/plugins/elf/section.c new file mode 100644 index 0000000..556c0ed --- /dev/null +++ b/plugins/elf/section.c @@ -0,0 +1,425 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * section.h - prototypes pour la gestion des sections d'un ELF + * + * Copyright (C) 2008-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "section.h" + + +#include <malloc.h> +#include <string.h> + + +#include "elf-int.h" + + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* index = indice de la section recherchée. * +* section = ensemble d'informations à faire remonter. [OUT] * +* * +* Description : Recherche une section donnée au sein de binaire par indice. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_section_by_index(const GElfFormat *format, uint16_t index, elf_shdr *section) +{ + phys_t offset; /* Emplacement à venir lire */ + + if (index >= ELF_HDR(format, format->header, e_shnum)) return false; + + offset = ELF_HDR(format, format->header, e_shoff) + + ELF_HDR(format, format->header, e_shentsize) * index; + + return read_elf_section_header(format, offset, section); + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* name = nom de la section recherchée. * +* section = ensemble d'informations à faire remonter. [OUT] * +* * +* Description : Recherche une section donnée au sein de binaire par nom. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_section_by_name(const GElfFormat *format, const char *name, elf_shdr *section) +{ + bool result; /* Bilan à faire remonter */ + elf_shdr strings; /* Section des descriptions */ + uint16_t i; /* Boucle de parcours */ + const char *secname; /* Nom d'une section analysée */ + + if (!find_elf_section_by_index(format, ELF_HDR(format, format->header, e_shstrndx), &strings)) + return false; + + result = false; + + for (i = 0; i < ELF_HDR(format, format->header, e_shnum) && !result; i++) + { + find_elf_section_by_index(format, i, section); + + secname = extract_name_from_elf_string_section(format, &strings, + ELF_SHDR(format, *section, sh_name)); + + if (secname != NULL) + result = (strcmp(name, secname) == 0); + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* addr = adresse de la section recherchée. (32 bits) * +* section = ensemble d'informations à faire remonter. [OUT] * +* * +* Description : Recherche une section donnée au sein de binaire par type. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_section_by_virtual_address(const GElfFormat *format, virt_t addr, elf_shdr *section) +{ + bool result; /* Bilan à faire remonter */ + uint16_t i; /* Boucle de parcours */ + + result = false; + + for (i = 0; i < ELF_HDR(format, format->header, e_shnum) && !result; i++) + { + find_elf_section_by_index(format, i, section); + + result = (addr == ELF_SHDR(format, *section, sh_addr)); + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* type = type de la section recherchée. * +* sections = tableau d'informations à faire remonter. [OUT] * +* count = nombre d'éléments présents dans le tableau. [OUT] * +* * +* Description : Recherche une section donnée au sein de binaire par type. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_sections_by_type(const GElfFormat *format, uint32_t type, elf_shdr **sections, size_t *count) +{ + uint16_t i; /* Boucle de parcours */ + elf_shdr section; /* Section à analyser */ + + *sections = NULL; + *count = 0; + + for (i = 0; i < ELF_HDR(format, format->header, e_shnum); i++) + { + find_elf_section_by_index(format, i, §ion); + + if (type == ELF_SHDR(format, section, sh_type)) + { + *sections = (elf_shdr *)realloc(*sections, ++(*count) * sizeof(elf_shdr)); + (*sections)[*count - 1] = section; + } + + } + + return (*count > 0); + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* section = section à consulter. * +* offset = position de la section trouvée. [OUT] * +* size = taille de la section trouvée. [OUT] * +* addr = adresse virtuelle de la section trouvée. [OUT] * +* * +* Description : Fournit les adresses et taille contenues dans une section. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void get_elf_section_content(const GElfFormat *format, const elf_shdr *section, phys_t *offset, phys_t *size, virt_t *addr) +{ + *offset = ELF_SHDR(format, *section, sh_offset); + *size = ELF_SHDR(format, *section, sh_size); + + if (addr != NULL) + *addr = ELF_SHDR(format, *section, sh_addr); + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* section = section à consulter. * +* range = emplacement de la fonction à renseigner. [OUT] * +* * +* Description : Fournit la localisation d'une section. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void get_elf_section_range(const GElfFormat *format, const elf_shdr *section, mrange_t *range) +{ + virt_t virt; /* Emplacement virtuel */ + vmpa2t tmp; /* Enregistrement intermédiaire*/ + + virt = ELF_SHDR(format, *section, sh_addr); + + if (virt == 0) + virt = VMPA_NO_VIRTUAL; + + init_vmpa(&tmp, ELF_SHDR(format, *section, sh_offset), virt); + + init_mrange(range, &tmp, ELF_SHDR(format, *section, sh_size)); + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* name = nom de la section recherchée. * +* offset = position de la section trouvée. [OUT] * +* size = taille de la section trouvée. [OUT] * +* address = adresse virtuelle de la section trouvée. [OUT] * +* * +* Description : Recherche une zone donnée au sein de binaire par nom. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_section_content_by_name(const GElfFormat *format, const char *name, phys_t *offset, phys_t *size, virt_t *address) +{ + bool result; /* Bilan à retourner */ + elf_shdr section; /* Section trouvée ou non */ + + result = find_elf_section_by_name(format, name, §ion); + + if (result) + get_elf_section_content(format, §ion, offset, size, address); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* name = nom de la section recherchée. * +* range = emplacement de la fonction à renseigner. [OUT] * +* * +* Description : Recherche une zone donnée au sein de binaire par nom. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_elf_section_range_by_name(const GElfFormat *format, const char *name, mrange_t *range) +{ + bool result; /* Bilan à retourner */ + elf_shdr section; /* Section trouvée ou non */ + + result = find_elf_section_by_name(format, name, §ion); + + if (result) + get_elf_section_range(format, §ion, range); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* section = section contenant des chaînes terminées par '\0'. * +* index = indice du premier caractères à cerner. * +* * +* Description : Identifie une chaîne de caractères dans une section adéquate.* +* * +* Retour : Pointeur vers la chaîne recherchée ou NULL en cas d'échec. * +* * +* Remarques : - * +* * +******************************************************************************/ + +const char *extract_name_from_elf_string_section(const GElfFormat *format, const elf_shdr *section, off_t index) +{ + const char *result; /* Nom trouvé à renvoyer */ + phys_t last; /* Dernier '\0' possible */ + phys_t phys; /* Point de lecture physique */ + vmpa2t pos; /* Position de lecture */ + const GBinContent *content; /* Contenu binaire à lire */ + + last = ELF_SHDR(format, *section, sh_offset) + ELF_SHDR(format, *section, sh_size); + + phys = ELF_SHDR(format, *section, sh_offset) + index; + + if ((phys + 1) >= last) + return NULL; + + init_vmpa(&pos, phys, VMPA_NO_VIRTUAL); + + content = G_BIN_FORMAT(format)->content; + + result = (const char *)g_binary_content_get_raw_access(content, &pos, 1); + + if (result == NULL) + return NULL; + + if ((phys + strlen(result)) > last) + return NULL; + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* off = position physique à retrouver. * +* pos = position correspondante. [OUT] * +* * +* Description : Fournit l'emplacement correspondant à une position physique. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool translate_offset_into_vmpa_using_elf_sections(const GElfFormat *format, phys_t off, vmpa2t *pos) +{ + bool result; /* Bilan à retourner */ + uint16_t i; /* Boucle de parcours */ + elf_shdr section; /* Section à analyser */ + virt_t addr; /* Adresse virtuelle calculée */ + + result = false; + + for (i = 0; i < ELF_HDR(format, format->header, e_shnum) && !result; i++) + { + find_elf_section_by_index(format, i, §ion); + + if (ELF_SHDR(format, section, sh_offset) <= off + && off < (ELF_SHDR(format, section, sh_offset) + ELF_SHDR(format, section, sh_size))) + { + addr = ELF_SHDR(format, section, sh_addr) + off - ELF_SHDR(format, section, sh_offset); + init_vmpa(pos, off, addr); + result = true; + } + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* addr = adresse virtuelle à retrouver. * +* pos = position correspondante. [OUT] * +* * +* Description : Fournit l'emplacement correspondant à une adresse virtuelle. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool translate_address_into_vmpa_using_elf_sections(const GElfFormat *format, virt_t addr, vmpa2t *pos) +{ + bool result; /* Bilan à retourner */ + uint16_t i; /* Boucle de parcours */ + elf_shdr section; /* Section à analyser */ + phys_t off; /* Position physique calculée */ + + result = false; + + for (i = 0; i < ELF_HDR(format, format->header, e_shnum) && !result; i++) + { + find_elf_section_by_index(format, i, §ion); + + if (ELF_SHDR(format, section, sh_addr) <= addr + && addr < (ELF_SHDR(format, section, sh_addr) + ELF_SHDR(format, section, sh_size))) + { + off = ELF_SHDR(format, section, sh_offset) + addr - ELF_SHDR(format, section, sh_addr); + init_vmpa(pos, off, addr); + result = true; + } + + } + + return result; + +} diff --git a/plugins/elf/section.h b/plugins/elf/section.h new file mode 100644 index 0000000..f3be0f4 --- /dev/null +++ b/plugins/elf/section.h @@ -0,0 +1,68 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * section.h - prototypes pour la gestion des sections d'un ELF + * + * Copyright (C) 2008-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_SECTION_H +#define _FORMAT_ELF_SECTION_H + + +#include "elf.h" +#include "elf_def.h" + + + +/* Recherche une section donnée au sein de binaire par indice. */ +bool find_elf_section_by_index(const GElfFormat *, uint16_t, elf_shdr *); + +/* Recherche une section donnée au sein de binaire par nom. */ +bool find_elf_section_by_name(const GElfFormat *, const char *, elf_shdr *); + +/* Recherche une section donnée au sein de binaire par type. */ +bool find_elf_section_by_virtual_address(const GElfFormat *, virt_t, elf_shdr *); + +/* Recherche une section donnée au sein de binaire par type. */ +bool find_elf_sections_by_type(const GElfFormat *, uint32_t, elf_shdr **, size_t *); + +/* Fournit les adresses et taille contenues dans une section. */ +void get_elf_section_content(const GElfFormat *, const elf_shdr *, phys_t *, phys_t *, virt_t *); + +/* Fournit la localisation d'une section. */ +void get_elf_section_range(const GElfFormat *, const elf_shdr *, mrange_t *); + +/* Recherche une zone donnée au sein de binaire par nom. */ +bool find_elf_section_content_by_name(const GElfFormat *, const char *, phys_t *, phys_t *, virt_t *); + +/* Recherche une zone donnée au sein de binaire par nom. */ +bool find_elf_section_range_by_name(const GElfFormat *, const char *, mrange_t *); + +/* Identifie une chaîne de caractères dans une section adéquate. */ +const char *extract_name_from_elf_string_section(const GElfFormat *, const elf_shdr *, off_t); + +/* Fournit l'emplacement correspondant à une position physique. */ +bool translate_offset_into_vmpa_using_elf_sections(const GElfFormat *, phys_t, vmpa2t *); + +/* Fournit l'emplacement correspondant à une adresse virtuelle. */ +bool translate_address_into_vmpa_using_elf_sections(const GElfFormat *, virt_t, vmpa2t *); + + + +#endif /* _FORMAT_ELF_SECTION_H */ diff --git a/plugins/elf/strings.c b/plugins/elf/strings.c new file mode 100644 index 0000000..3bec414 --- /dev/null +++ b/plugins/elf/strings.c @@ -0,0 +1,250 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * strings.c - recherche des chaînes contenues dans un ELF + * + * Copyright (C) 2008-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "strings.h" + + +#include <assert.h> +#include <ctype.h> +#include <malloc.h> +#include <string.h> +#include <sys/param.h> + + +#include <arch/raw.h> + + +#include "elf-int.h" +#include "section.h" + + + +/* Enregistre toutes les chaînes de caractères trouvées. */ +static bool parse_elf_string_data(GElfFormat *, phys_t, phys_t, virt_t); + + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à analyser. * +* * +* Description : Charge en mémoire toutes les chaînes trouvées. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool find_all_elf_strings(GElfFormat *format) +{ + bool got_string; /* Indique un remplissage */ + phys_t str_start; /* Début de section */ + phys_t str_size; /* Taille de section */ + virt_t str_addr; /* Adresse virtuelle associée */ + elf_shdr *sections; /* Groupe de sections trouvées */ + size_t count; /* Quantité de données */ + size_t i; /* Boucle de parcours #1 */ + phys_t max; /* Borne à ne pas dépasser */ + phys_t iter; /* Boucle de parcours #2 */ + elf_phdr phdr; /* En-tête de programme ELF */ + + got_string = false; + + /* Données en lecture seule */ + + if (find_elf_section_content_by_name(format, ".rodata", &str_start, &str_size, &str_addr)) + got_string |= parse_elf_string_data(format, str_start, str_size, str_addr); + + else + { + if (find_elf_sections_by_type(format, SHT_PROGBITS, §ions, &count)) + { + for (i = 0; i < count; i++) + if (ELF_SHDR(format, sections[i], sh_flags) == SHF_ALLOC + || (ELF_SHDR(format, sections[i], sh_flags) & SHF_STRINGS)) + { + get_elf_section_content(format, §ions[i], &str_start, &str_size, &str_addr); + got_string |= parse_elf_string_data(format, str_start, str_size, str_addr); + } + + free(sections); + + } + + } + + /* Chaîne de caractères déclarées */ + + if (find_elf_sections_by_type(format, SHT_STRTAB, §ions, &count)) + { + for (i = 0; i < count; i++) + { + get_elf_section_content(format, §ions[i], &str_start, &str_size, &str_addr); + got_string |= parse_elf_string_data(format, str_start, str_size, str_addr); + } + + free(sections); + + } + + /* En désespoir de cause, on se rabbat sur les parties de programme directement */ + + if (!got_string) + { + max = ELF_HDR(format, format->header, e_phoff) + + ELF_HDR(format, format->header, e_phnum) * ELF_SIZEOF_PHDR(format); + + for (iter = ELF_HDR(format, format->header, e_phoff); iter < max; iter += ELF_SIZEOF_PHDR(format)) + { + if (!read_elf_program_header(format, iter, &phdr)) + continue; + + if (ELF_PHDR(format, phdr, p_flags) & PF_R + && !(ELF_PHDR(format, phdr, p_flags) & PF_X)) + parse_elf_string_data(format, + ELF_PHDR(format, phdr, p_offset), + ELF_PHDR(format, phdr, p_filesz), + ELF_PHDR(format, phdr, p_vaddr)); + + } + + } + + return true; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à compléter. * +* start = début de la zone à parcourir. * +* size = taille de l'espace à parcourir. * +* address = adresse virtuelle du début de la section. * +* * +* Description : Enregistre toutes les chaînes de caractères trouvées. * +* * +* Retour : true si des chaînes ont été ajoutées sans erreur, ou false. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool parse_elf_string_data(GElfFormat *format, phys_t start, phys_t size, virt_t address) +{ + bool result; /* Bilan à faire remonter */ + GBinFormat *base; /* Autre version du format */ + GBinContent *content; /* Contenu binaire à lire */ + const bin_t *data; /* Contenu complet et original */ + vmpa2t pos; /* Tête de lecture */ + bool cut; /* Séparation nette ? */ + phys_t i; /* Boucle de parcours */ + phys_t end; /* Position de fin de chaîne */ + GArchInstruction *instr; /* Instruction décodée */ + bool inserted; /* Bilan d'une insertion */ + const mrange_t *range; /* Espace occupé par une chaîne*/ + GBinSymbol *symbol; /* Symbole à intégrer */ + char *label; /* Désignation de la chaîne */ + + if (address == 0) + return false; + + result = false; + + /* Préparation des accès */ + + base = G_BIN_FORMAT(format); + + content = g_binary_format_get_content(base); + + init_vmpa(&pos, start, address); + + data = g_binary_content_get_raw_access(content, &pos, size); + + if (data == NULL) + goto pesd_error; + + /* Boucle de parcours */ + + cut = true; + + for (i = 0; i < size; i++) + if (isprint(data[i])) + { + for (end = i + 1; end < size; end++) + if (!isprint(data[end])) break; + + if (end < size && isspace(data[end])) + end++; + + if (end < size && data[end] == '\0') + end++; + + init_vmpa(&pos, start + i, address + i); + + instr = g_raw_instruction_new_array(content, MDS_8_BITS, end - i, &pos, format->endian); + assert(instr != NULL); + + g_raw_instruction_mark_as_string(G_RAW_INSTRUCTION(instr), true); + + inserted = g_preload_info_add_instruction(base->info, instr); + + if (inserted) + { + range = g_arch_instruction_get_range(instr); + + symbol = g_binary_symbol_new(range, STP_RO_STRING); + g_binary_format_add_symbol(base, symbol); + + /* Jointure avec la chaîne précédente ? */ + + if (cut) + { + label = create_string_label(base, get_mrange_addr(range), end - i); + + g_binary_symbol_set_alt_label(symbol, label); + + free(label); + + } + + } + + /* Conclusion */ + + cut = (data[end - 1] == '\0'); + + i = end - 1; + result = true; + + } + else cut = true; + + pesd_error: + + g_object_unref(G_OBJECT(content)); + + return result; + +} diff --git a/plugins/elf/strings.h b/plugins/elf/strings.h new file mode 100644 index 0000000..bea52da --- /dev/null +++ b/plugins/elf/strings.h @@ -0,0 +1,37 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * strings.h - prototypes pour la recherche des chaînes contenues dans un ELF + * + * Copyright (C) 2008-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_STRINGS_H +#define _FORMAT_ELF_STRINGS_H + + +#include "elf.h" + + + +/*Charge en mémoire toutes les chaînes trouvées. */ +bool find_all_elf_strings(GElfFormat *); + + + +#endif /* _FORMAT_ELF_STRINGS_H */ diff --git a/plugins/elf/symbols.c b/plugins/elf/symbols.c new file mode 100644 index 0000000..292913b --- /dev/null +++ b/plugins/elf/symbols.c @@ -0,0 +1,891 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * symbols.c - gestion des symboles d'un ELF + * + * Copyright (C) 2009-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "symbols.h" + + +#include <assert.h> +#include <malloc.h> +#include <string.h> + + +#include <i18n.h> +#include <arch/raw.h> +#include <common/extstr.h> +#include <core/global.h> +#include <core/params.h> +#include <format/mangling/demangler.h> +#include <gui/panels/log.h> + + +#include "dynamic.h" +#include "elf-int.h" +#include "helper_arm.h" +#include "loading.h" +#include "program.h" +#include "section.h" + + + + + + + + + + +/* Enregistre un point d'entrée au sein d'un binaire ELF. */ +static void register_elf_entry_point(GElfFormat *, virt_t, phys_t, GBinRoutine *); + +/* Enumère tous les points d'entrée principaux d'un binaire ELF. */ +static bool load_all_elf_basic_entry_points(GElfFormat *); + + + + + + + + + +/* -------------------------- DETAIL DES SYMBOLES INTERNES -------------------------- */ + + +/* Assure le chargement des symboles internes ELF en différé. */ +static bool do_elf_internal_symbol_loading(GElfLoading *, GElfFormat *, phys_t *); + +/* Charge tous les symboles internes possibles. */ +static bool load_elf_internal_symbols(GElfFormat *, wgroup_id_t, GtkStatusStack *); + + + +/* -------------------------- DETAIL DES SYMBOLES EXTERNES -------------------------- */ + + +/* Retrouve un élément donné dans la section dynamique. */ +static bool find_elf_dynamic_item(const GElfFormat *, const elf_shdr *, int32_t, elf_dyn *); + +/* Charge tous les éléments dynamiques externes possibles. */ +static bool load_elf_external_symbols(GElfFormat *, const elf_shdr *); + + + + + + + + + + + + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à compléter. * + status = barre de statut à tenir informée. * +* * +* Description : Charge en mémoire la liste humaine des symboles. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool load_elf_symbols(GElfFormat *format, GtkStatusStack *status) +{ + bool result; /* Bilan à retourner */ + wgroup_id_t gid; /* Identifiant pour les tâches */ + + elf_shdr *sections; /* Groupe de sections trouvées */ + size_t count; /* Quantité de données */ + + result = true; + + gid = g_work_queue_define_work_group(get_work_queue()); + + /* Symboles internes */ + + result &= load_elf_internal_symbols(format, gid, status); + + + + + /* Symboles externes */ + + if (find_elf_sections_by_type(format, SHT_DYNAMIC, §ions, &count)) + { + log_variadic_message(LMT_INFO, _("Binary is dynamically linked")); + + result &= load_elf_external_symbols(format, §ions[0]); + + free(sections); + + } + else log_variadic_message(LMT_INFO, _("Binary is statically linked")); + + + + + /* Symboles d'entrée, si encore besoin */ + + /** + * Le tri en préalable + */ + + + + + + result &= load_all_elf_basic_entry_points(format); + + return result; + +} + + + + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à compléter. * +* vaddr = adresse virtuelle du symbole à insérer. * +* len = taille de la routine à ajouter. * +* routine = représentation de la fonction repérée. * +* * +* Description : Enregistre un point d'entrée au sein d'un binaire ELF. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void register_elf_entry_point(GElfFormat *format, virt_t vaddr, phys_t len, GBinRoutine *routine) +{ + GBinFormat *base; /* Version basique du format */ + virt_t final_vaddr; /* Adresse virtuelle retenue */ + bool status; /* Bilan d'une opération */ + vmpa2t addr; /* Localisation d'une routine */ + mrange_t range; /* Couverture mémoire associée */ + GBinSymbol *symbol; /* Nouveau symbole construit */ + + /* Localisation complète du symbole */ + + if (ELF_HDR(format, format->header, e_machine) == EM_ARM) + final_vaddr = vaddr & ~0x1; + else + final_vaddr = vaddr; + + status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_vaddr, &addr); + if (!status) return; + + /* Comptabilisation en tant que symbole */ + + if (g_binary_format_find_symbol_at(G_BIN_FORMAT(format), &addr, &symbol)) + g_object_unref(G_OBJECT(routine)); + + else + { + base = G_BIN_FORMAT(format); + + init_mrange(&range, &addr, len); + + symbol = G_BIN_SYMBOL(routine); + + g_binary_symbol_set_range(symbol, &range); + g_binary_symbol_set_target_type(symbol, STP_ENTRY_POINT); + + g_binary_format_add_symbol(base, symbol); + + /* Comptabilisation pour le désassemblage brut */ + g_binary_format_register_code_point(base, vaddr, true); + + } + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* * +* Description : Enumère tous les points d'entrée principaux d'un binaire ELF.* +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool load_all_elf_basic_entry_points(GElfFormat *format) +{ + virt_t ep; /* Point d'entrée détecté */ + GBinRoutine *routine; /* Routine à associer à un pt. */ + elf_phdr dynamic; /* En-tête de programme DYNAMIC*/ + elf_dyn item_a; /* Premier élément DYNAMIC */ + elf_dyn item_b; /* Second élément DYNAMIC */ + const GBinContent *content; /* Contenu binaire à lire */ + phys_t length; /* Taille totale du contenu */ + bool status; /* Bilan d'une opération */ + vmpa2t pos; /* Tête de lecture courante */ + uint32_t virt_32; /* Adresse virtuelle sur 32b */ + uint64_t virt_64; /* Adresse virtuelle sur 64b */ + + /* Point d'entrée principal éventuel */ + + ep = ELF_HDR(format, format->header, e_entry); + + if (ep != 0x0) + { + routine = try_to_demangle_routine("entry_point"); + register_elf_entry_point(format, ep, 0, routine); + } + + /* Chargemet de l'en-tête de programme DYNAMIC */ + + if (!find_elf_dynamic_program_header(format, &dynamic)) + goto laebep_exit; + + /* Détection des constructeurs & destructeurs */ + + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_INIT, &item_a)) + { + ep = ELF_DYN(format, item_a, d_un.d_ptr); + + if (ep != 0x0) + { + routine = try_to_demangle_routine("init_function"); + register_elf_entry_point(format, ep, 0, routine); + } + + } + + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_FINI, &item_a)) + { + ep = ELF_DYN(format, item_a, d_un.d_ptr); + + if (ep != 0x0) + { + routine = try_to_demangle_routine("termination_function"); + register_elf_entry_point(format, ep, 0, routine); + } + + } + + void load_entry_points_from_array(GElfFormat *fmt, const elf_dyn *ar, const elf_dyn *sz, const char *prefix) + { + unsigned int i; /* Boucle de parcours */ + char fullname[64]; /* Désignation humaine */ + + assert(sizeof(fullname) >= (strlen(prefix) + sizeof(XSTR(UINT64_MAX) + 1))); + + content = G_BIN_FORMAT(fmt)->content; + + status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), + ELF_DYN(fmt, *ar, d_un.d_val), + &pos); + if (!status) return; + + length = get_phy_addr(&pos) + ELF_DYN(fmt, *sz, d_un.d_val); + + for (i = 0; get_phy_addr(&pos) < length; i++) + { + /** + * Selon la libc d'Android (https://www.codeaurora.org/.../android/bionic/linker/README.TXT) : + * + * DT_INIT_ARRAY + * Points to an array of function addresses that must be + * called, in-order, to perform initialization. Some of + * the entries in the array can be 0 or -1, and should + * be ignored. + * + * On étend le principe aux sections DT_FINI_ARRAY et DT_PREINIT_ARRAY. + */ + + if (fmt->is_32b) + { + status = g_binary_content_read_u32(content, &pos, fmt->endian, &virt_32); + status &= (virt_32 != 0x0 && virt_32 != 0xffffffff); + ep = virt_32; + } + else + { + status = g_binary_content_read_u64(content, &pos, fmt->endian, &virt_64); + status &= (virt_64 != 0x0 && virt_64 != 0xffffffffffffffff); + ep = virt_64; + } + + if (!status) break; + + snprintf(fullname, sizeof(fullname), "%s%u", prefix, i); + + routine = try_to_demangle_routine(fullname); + register_elf_entry_point(fmt, ep, 0, routine); + + } + + } + + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_INIT_ARRAY, &item_a)) + { + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_INIT_ARRAYSZ, &item_b)) + { + load_entry_points_from_array(format, &item_a, &item_b, "init_array_function_"); + } + + } + + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_FINI_ARRAY, &item_a)) + { + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_FINI_ARRAYSZ, &item_b)) + { + load_entry_points_from_array(format, &item_a, &item_b, "fini_array_function_"); + } + + } + + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_PREINIT_ARRAY, &item_a)) + { + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_PREINIT_ARRAYSZ, &item_b)) + { + load_entry_points_from_array(format, &item_a, &item_b, "preinit_array_function_"); + } + + } + + /* Identification de l'entrée de la PLT */ + + if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_PLTGOT, &item_a)) + { + status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), + ELF_DYN(format, item_a, d_un.d_val), + &pos); + + if (status) + { + content = G_BIN_FORMAT(format)->content; + + /* On saute le premier élément... */ + if (format->is_32b) + status = g_binary_content_read_u32(content, &pos, format->endian, &virt_32); + else + status = g_binary_content_read_u64(content, &pos, format->endian, &virt_64); + + while (1) + { + if (format->is_32b) + { + status = g_binary_content_read_u32(content, &pos, format->endian, &virt_32); + ep = virt_32; + } + else + { + status = g_binary_content_read_u64(content, &pos, format->endian, &virt_64); + ep = virt_64; + } + + if (!status) break; + + if (ep != 0x0) + { + routine = try_to_demangle_routine("plt_entry"); + register_elf_entry_point(format, ep, 0, routine); + break; + } + + } + + } + + } + + laebep_exit: + + return true; + +} + + + + + + + + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* sym = section comprenant les symboles à venir lire. * +* index = indice de l'entrée à venir lire. * +* symbol = ensemble d'informations lues. [OUT] * +* * +* Description : Récupère la définition complète d'un symbole donné. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool get_elf_symbol_by_index(GElfFormat *format, const elf_shdr *sym, off_t index, elf_sym *symbol) +{ + phys_t sym_start; /* Début de section */ + phys_t sym_size; /* Taille de section */ + phys_t offset; /* Emplacement à venir lire */ + + get_elf_section_content(format, sym, &sym_start, &sym_size, NULL); + + offset = sym_start + index * ELF_SIZEOF_SYM(format); + if ((offset + ELF_SIZEOF_SYM(format)) > (sym_start + sym_size)) return NULL; + + return read_elf_symbol(format, &offset, symbol); + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à consulter. * +* sym = section comprenant les symboles à venir lire. * +* str = section de chaînes de caractères pour les noms. * +* index = indice de l'entrée à venir lire. * +* * +* Description : Récupère la désignation d'un symbole donné. * +* * +* Retour : Nom du symbole trouvé, ou NULL si erreur ou non adapté. * +* * +* Remarques : - * +* * +******************************************************************************/ + +const char *get_elf_symbol_name(GElfFormat *format, const elf_shdr *sym, const elf_shdr *str, off_t index) +{ + const char *result; /* Résultat à retourner */ + elf_sym symbol; /* Symbole aux infos visées */ + + result = NULL; + + if (get_elf_symbol_by_index(format, sym, index, &symbol)) + result = extract_name_from_elf_string_section(format, str, ELF_SYM(format, symbol, st_name)); + + return result; + +} + + + +/* ---------------------------------------------------------------------------------- */ +/* DETAIL DES SYMBOLES INTERNES */ +/* ---------------------------------------------------------------------------------- */ + + +/****************************************************************************** +* * +* Paramètres : loading = chargement de symboles internes en cours. * +* format = format ELF à compléter. * +* iter = tête de lecture évoluant avec le temps. [OUT] * +* * +* Description : Assure le chargement des symboles internes ELF en différé. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool do_elf_internal_symbol_loading(GElfLoading *loading, GElfFormat *format, phys_t *iter) +{ + bool result; /* Bilan à retourner */ + elf_sym sym; /* Symbole aux infos visées */ + virt_t virt; /* Adresse virtuelle */ + const elf_shdr *section; /* Groupe de sections trouvées */ + bool use_virt; /* Choix de construction de nom*/ + const elf_shdr *strtab; /* Section .strtab trouvée */ + bool has_strtab; /* Présence de cette section */ + phys_t first; /* Position du premier élément */ + const char *name; /* Nom du symbole trouvé */ + GBinFormat *base; /* Version basique du format */ + vmpa2t addr; /* Localisation d'une routine */ + GBinSymbol *symbol; /* Nouveau symbole construit */ + char alt_name[6 + VMPA_MAX_LEN]; /* Nom abstrait de substitution*/ + virt_t final_virt; /* Adresse virtuelle retenue */ + mrange_t range; /* Couverture mémoire associée */ + GBinRoutine *routine; /* Nouvelle routine trouvée */ + + result = read_elf_symbol(format, iter, &sym); + if (!result) goto geslp_done; + + /* On rejette les symboles qui ne sont pas définis au sein du binaire */ + + if (ELF_SYM(format, sym, st_shndx) == 0) goto geslp_done; + + /* Résolution précise d'adresse */ + + virt = ELF_SYM(format, sym, st_value); + if (virt == 0) goto geslp_done; + + + /* TODO */ + + //init_vmpa(&addr, VMPA_NO_PHYSICAL, ELF_SYM(format, sym, st_value)); + + + //init_mrange(&range, &addr, 0); + + + /* Première ébauche de nom */ + + g_elf_loading_get_internal_info(loading, §ion, &use_virt, &strtab, &has_strtab, &first); + + if (!has_strtab) + name = NULL; + + else + name = get_elf_symbol_name(format, section, strtab, + ((*iter - first) / ELF_SIZEOF_SYM(format)) - 1); + + /* Traitements particuliers */ + + base = G_BIN_FORMAT(format); + + switch (ELF_ST_TYPE(format, sym)) + { + case STT_OBJECT: + + /* Ajustement de la position */ + + if (!g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), virt, &addr)) + { + symbol = NULL; + break; + } + + /* Création d'un nom unique ? */ + + if (name == NULL) + { + strcpy(alt_name, "obj_"); + + if (use_virt) + vmpa2_virt_to_string(&addr, MDS_UNDEFINED, alt_name + 4, NULL); + else + vmpa2_phys_to_string(&addr, MDS_UNDEFINED, alt_name + 4, NULL); + + name = alt_name; + + } + + + /* TODO */ + + symbol = NULL; + + + break; + + case STT_FUNC: + + /* Ajustement de la position */ + + if (ELF_HDR(format, format->header, e_machine) == EM_ARM) + final_virt = virt & ~0x1; + else + final_virt = virt; + + if (!g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_virt, &addr)) + { + symbol = NULL; + break; + } + + init_mrange(&range, &addr, ELF_SYM(format, sym, st_size)); + + /* Création d'un nom unique ? */ + + if (name == NULL) + { + strcpy(alt_name, "func_"); + + if (use_virt) + vmpa2_virt_to_string(&addr, MDS_UNDEFINED, alt_name + 5, NULL); + else + vmpa2_phys_to_string(&addr, MDS_UNDEFINED, alt_name + 5, NULL); + + name = alt_name; + + } + + /* Routine */ + + routine = try_to_demangle_routine(name); + symbol = G_BIN_SYMBOL(routine); + + g_binary_symbol_set_range(symbol, &range); + + /* Comptabilisation pour le désassemblage brut */ + + g_binary_format_register_code_point(G_BIN_FORMAT(format), virt, false); + + break; + + default: + symbol = NULL; + break; + + } + + if (symbol != NULL) + g_binary_format_add_symbol(base, symbol); + + geslp_done: + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = description de l'exécutable à compléter. * +* gid = groupe de travail impliqué. * + status = barre de statut à tenir informée. * +* * +* Description : Charge tous les symboles internes possibles. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool load_elf_internal_symbols(GElfFormat *format, wgroup_id_t gid, GtkStatusStack *status) +{ + bool result; /* Bilan à retourner */ + bool no_name; /* Choix de construction de nom*/ + activity_id_t msg; /* Message de progression */ + GWorkQueue *queue; /* Gestionnaire de différés */ + elf_shdr *dynsym_sections; /* Groupe de sections trouvées */ + size_t count; /* Quantité de données */ + elf_shdr *symtab_sections; /* Groupe de sections trouvées */ + size_t i; /* Boucle de parcours */ + + result = true; + + /* Charge tous les symboles définis dans une section */ + void add_all_symbols_from_section(const elf_shdr *section, bool use_virt, GWorkQueue *wq, activity_id_t id) + { + phys_t start; /* Début de la zone à traiter */ + phys_t size; /* Taille de cette même zone */ + phys_t sym_size; /* Taille de chaque symbole lu */ + guint runs_count; /* Qté d'exécutions parallèles */ + phys_t run_size; /* Volume réparti par exécution*/ + guint i; /* Boucle de parcours */ + phys_t begin; /* Début de zone de traitement */ + phys_t end; /* Fin d'un zone de traitement */ + GElfLoading *loading; /* Tâche de chargement à lancer*/ + + get_elf_section_content(format, section, &start, &size, NULL); + + sym_size = ELF_SIZEOF_SYM(format); + + runs_count = g_get_num_processors(); + + run_size = size / (sym_size * runs_count); + + gtk_status_stack_extend_activity(status, id, size / sym_size); + + for (i = 0; i < runs_count; i++) + { + begin = start + i * run_size * sym_size; + + if ((i + 1) == runs_count) + end = start + size; + else + end = begin + run_size * sym_size; + + loading = g_elf_loading_new(format, section, use_virt, start, begin, end, + id, do_elf_internal_symbol_loading); + + g_work_queue_schedule_work(wq, G_DELAYED_WORK(loading), gid); + + } + + } + + if (!g_generic_config_get_value(get_main_configuration(), MPK_FORMAT_NO_NAME, &no_name)) + return false; + + msg = gtk_status_stack_add_activity(status, _("Loading internal symbols..."), 0); + + queue = get_work_queue(); + + if (find_elf_sections_by_type(format, SHT_DYNSYM, &dynsym_sections, &count)) + for (i = 0; i < count; i++) + add_all_symbols_from_section(&dynsym_sections[i], no_name, queue, msg); + + if (find_elf_sections_by_type(format, SHT_SYMTAB, &symtab_sections, &count)) + for (i = 0; i < count; i++) + add_all_symbols_from_section(&symtab_sections[i], no_name, queue, msg); + + g_work_queue_wait_for_completion(queue, gid); + + gtk_status_stack_remove_activity(status, msg); + + if (dynsym_sections != NULL) free(dynsym_sections); + if (symtab_sections != NULL) free(symtab_sections); + + return result; + +} + + + +/* ---------------------------------------------------------------------------------- */ +/* DETAIL DES SYMBOLES EXTERNES */ +/* ---------------------------------------------------------------------------------- */ + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* dynamic = section de type SHT_DYNAMIC. * +* type = sorte d'élément recherché. * +* item = élément retrouvé dans la section. [OUT] * +* * +* Description : Retrouve un élément donné dans la section dynamique. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool find_elf_dynamic_item(const GElfFormat *format, const elf_shdr *section, int32_t type, elf_dyn *item) +{ + bool result; /* Bilan à retourner */ + const GBinContent *content; /* Contenu binaire à lire */ + phys_t pos; /* Position de lecture */ + vmpa2t tmp; /* Position écrasable */ + int32_t tag32; /* Type de l'entrée (32 bits) */ + int64_t tag64; /* Type de l'entrée (64 bits) */ + + result = true; + + content = G_BIN_FORMAT(format)->content; + + for (pos = ELF_SHDR(format, *section, sh_offset); + result; + pos += ELF_SIZEOF_DYN(format)) + { + init_vmpa(&tmp, pos, VMPA_NO_VIRTUAL); + + if (format->is_32b) + { + result = g_binary_content_read_s32(content, &tmp, format->endian, &tag32); + if (tag32 == type) break; + } + else + { + result = g_binary_content_read_s64(content, &tmp, format->endian, &tag64); + if (tag64 == type) break; + } + + } + + if (result) + { + init_vmpa(&tmp, pos, VMPA_NO_VIRTUAL); + + if (format->is_32b) + { + result = g_binary_content_read_s32(content, &tmp, format->endian, &item->dyn32.d_tag); + result &= g_binary_content_read_s32(content, &tmp, format->endian, &item->dyn32.d_un.d_val); + } + else + { + result = g_binary_content_read_s64(content, &tmp, format->endian, &item->dyn64.d_tag); + result &= g_binary_content_read_s64(content, &tmp, format->endian, &item->dyn64.d_un.d_val); + } + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : format = informations chargées à consulter. * +* dynamic = section de type SHT_DYNAMIC. * +* * +* Description : Charge tous les éléments dynamiques externes possibles. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool load_elf_external_symbols(GElfFormat *format, const elf_shdr *section) +{ + bool result; /* Bilan à retourner */ + elf_dyn item; /* Elément dynamique */ + elf_shdr relxxx; /* Section .rel.xxx trouvée */ + elf_shdr dynsym; /* Section .dynsym trouvée */ + elf_shdr dynstr; /* Section .dynstr trouvée */ + + result = true; + + /* Section .rel.plt */ + if (find_elf_dynamic_item(format, section, DT_JMPREL, &item)) + { + result &= find_elf_section_by_virtual_address(format, ELF_DYN(format, item, d_un.d_ptr), &relxxx); + + if (result) + result = find_elf_section_by_index(format, ELF_SHDR(format, relxxx, sh_link), &dynsym); + + if (result) + result = find_elf_section_by_index(format, ELF_SHDR(format, dynsym, sh_link), &dynstr); + + if (result) + switch (ELF_HDR(format, format->header, e_machine)) + { + case EM_ARM: + result = load_elf_arm_relocated_symbols(format, &relxxx, &dynsym, &dynstr); + break; + + default: + break; + + } + + } + + return result; + +} diff --git a/plugins/elf/symbols.h b/plugins/elf/symbols.h new file mode 100644 index 0000000..f0bfa0d --- /dev/null +++ b/plugins/elf/symbols.h @@ -0,0 +1,53 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * symbols.h - prototypes pour la gestion des symboles d'un ELF + * + * Copyright (C) 2009-2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_ELF_SYMBOLS_H +#define _FORMAT_ELF_SYMBOLS_H + + +#include "elf.h" + + +#include <glibext/delayed.h> +#include <gtkext/gtkstatusstack.h> + + + +/* Charge en mémoire la liste humaine des symboles. */ +bool load_elf_symbols(GElfFormat *, GtkStatusStack *); + +/* Récupère la définition complète d'un symbole donné. */ +bool get_elf_symbol_by_index(GElfFormat *, const elf_shdr *, off_t, elf_sym *); + +/* Récupère la désignation d'un symbole donné. */ +const char *get_elf_symbol_name(GElfFormat *, const elf_shdr *, const elf_shdr *, off_t); + +/* Récupère la définition complète d'un symbole donné. */ +bool get_elf_symbol_by_index(GElfFormat *, const elf_shdr *, off_t, elf_sym *); + +/* Récupère la désignation d'un symbole donné. */ +const char *get_elf_symbol_name(GElfFormat *, const elf_shdr *, const elf_shdr *, off_t); + + + +#endif /* _FORMAT_ELF_SYMBOLS_H */ diff --git a/plugins/libcsem/Makefile.am b/plugins/libcsem/Makefile.am index c09ba86..3759070 100644 --- a/plugins/libcsem/Makefile.am +++ b/plugins/libcsem/Makefile.am @@ -10,6 +10,6 @@ liblibcsem_la_SOURCES = \ liblibcsem_la_CFLAGS = $(AM_CFLAGS) -AM_CPPFLAGS = $(LIBGTK_CFLAGS) $(LIBXML_CFLAGS) -I../../src +AM_CPPFLAGS = $(LIBGTK_CFLAGS) $(LIBXML_CFLAGS) -I../../src -I../.. AM_CFLAGS = $(DEBUG_CFLAGS) $(WARNING_FLAGS) $(COMPLIANCE_FLAGS) diff --git a/plugins/libcsem/semantic.c b/plugins/libcsem/semantic.c index 355bc9b..8fdc549 100644 --- a/plugins/libcsem/semantic.c +++ b/plugins/libcsem/semantic.c @@ -24,6 +24,7 @@ #include "semantic.h" +#include <plugins/elf/elf.h> #include <plugins/plugin-def.h> diff --git a/plugins/libcsem/semantic.h b/plugins/libcsem/semantic.h index 0fa79cf..2f8d70d 100644 --- a/plugins/libcsem/semantic.h +++ b/plugins/libcsem/semantic.h @@ -25,7 +25,6 @@ #define _PLUGINS_LIBCSEM_SEMANTIC_H -#include <format/elf/elf.h> #include <plugins/plugin.h> #include <plugins/plugin-int.h> diff --git a/plugins/pychrysa/Makefile.am b/plugins/pychrysa/Makefile.am index fe23e99..e8c2bed 100644 --- a/plugins/pychrysa/Makefile.am +++ b/plugins/pychrysa/Makefile.am @@ -4,6 +4,7 @@ pkglib_LTLIBRARIES = pychrysalide.la libdir = $(pluginsdir) pychrysalide_la_SOURCES = \ + access.h access.c \ helpers.h helpers.c \ plugin.h plugin.c \ pychrysa.h pychrysa.c \ diff --git a/plugins/pychrysa/access.c b/plugins/pychrysa/access.c new file mode 100644 index 0000000..21ff68f --- /dev/null +++ b/plugins/pychrysa/access.c @@ -0,0 +1,137 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * access.c - accès aux modules Python en cours d'enregistrement + * + * Copyright (C) 2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "access.h" + + +#include <stdlib.h> +#include <string.h> + + +#include <common/sort.h> + + + +/* Lien entre un module et sa désignation */ +typedef struct _module_access +{ + const char *path; /* Chemin d'accès */ + PyObject *mod; /* Module Python en place */ + +} module_access; + + +/* Conservation de tous les accès */ +static module_access *_pychrysalide_modules = NULL; +static size_t _pychrysalide_count = 0; + + +/* Effectue la comparaison entre deux accès à des modules. */ +static int compare_python_module_accesses(const module_access *, const module_access *); + + + +/****************************************************************************** +* * +* Paramètres : a = premier accès à analyser. * +* b = second accès à analyser. * +* * +* Description : Effectue la comparaison entre deux accès à des modules. * +* * +* Retour : Bilan de la comparaison. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static int compare_python_module_accesses(const module_access *a, const module_access *b) +{ + int result; /* Bilan à retourner */ + + result = strcmp(a->path, b->path); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : path = chemin d'accès à un module Python. * +* mod = module Python en question. * +* * +* Description : Enregistre une référence à un module Python en chargement. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void register_access_to_python_module(const char *path, PyObject *mod) +{ + module_access access; /* Nouvel enregistrement */ + + access.path = path; + access.mod = mod; + + Py_INCREF(mod); + + _pychrysalide_modules = qinsert(_pychrysalide_modules, &_pychrysalide_count, + sizeof(module_access), (__compar_fn_t)compare_python_module_accesses, + &access); + +} + + +/****************************************************************************** +* * +* Paramètres : path = chemin d'accès à un module Python. * +* * +* Description : Fournit la référence à un module Python défini. * +* * +* Retour : Module Python correspondant, ou NULL si aucun de trouvé. * +* * +* Remarques : - * +* * +******************************************************************************/ + +PyObject *get_access_to_python_module(const char *path) +{ + PyObject *result; /* Référence à renvoyer */ + module_access key; /* Définition à retrouver */ + module_access *access; /* Accès trouvé à consulter */ + + key.path = path; + + access = bsearch(&key, _pychrysalide_modules, _pychrysalide_count, + sizeof(module_access), (__compar_fn_t)compare_python_module_accesses); + + if (access != NULL) + result = access->mod; + else + result = NULL; + + return result; + +} diff --git a/plugins/pychrysa/access.h b/plugins/pychrysa/access.h new file mode 100644 index 0000000..52883ec --- /dev/null +++ b/plugins/pychrysa/access.h @@ -0,0 +1,40 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * access.h - prototypes pour l'accès aux modules Python en cours d'enregistrement + * + * Copyright (C) 2017 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _PLUGINS_PYCHRYSA_ACCESS_H +#define _PLUGINS_PYCHRYSA_ACCESS_H + + +#include <Python.h> + + + +/* Enregistre une référence à un module Python en chargement. */ +void register_access_to_python_module(const char *, PyObject *); + +/* Fournit la référence à un module Python défini. */ +PyObject *get_access_to_python_module(const char *path); + + + +#endif /* _PLUGINS_PYCHRYSA_ACCESS_H */ diff --git a/plugins/pychrysa/analysis/contents/module.c b/plugins/pychrysa/analysis/contents/module.c index d504534..2daa62c 100644 --- a/plugins/pychrysa/analysis/contents/module.c +++ b/plugins/pychrysa/analysis/contents/module.c @@ -30,6 +30,7 @@ #include "file.h" #include "restricted.h" +#include "../../access.h" @@ -84,6 +85,9 @@ bool add_analysis_contents_module_to_python_module(PyObject *super) result &= register_python_file_content(module); result &= register_python_restricted_content(module); + if (result) + register_access_to_python_module("pychrysalide.analysis.contents", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/analysis/db/items/module.c b/plugins/pychrysa/analysis/db/items/module.c index 73ea3d3..cf0fe56 100644 --- a/plugins/pychrysa/analysis/db/items/module.c +++ b/plugins/pychrysa/analysis/db/items/module.c @@ -29,6 +29,7 @@ #include "comment.h" +#include "../../../access.h" @@ -80,6 +81,9 @@ bool add_analysis_db_items_module_to_python_module(PyObject *super) result &= register_python_db_comment(module); + if (result) + register_access_to_python_module("pychrysalide.analysis.db.items", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/analysis/db/module.c b/plugins/pychrysa/analysis/db/module.c index eac3641..1c4da25 100644 --- a/plugins/pychrysa/analysis/db/module.c +++ b/plugins/pychrysa/analysis/db/module.c @@ -32,6 +32,7 @@ #include "collection.h" #include "item.h" #include "items/module.h" +#include "../../access.h" @@ -87,6 +88,9 @@ bool add_analysis_db_module_to_python_module(PyObject *super) result &= add_analysis_db_items_module_to_python_module(module); + if (result) + register_access_to_python_module("pychrysalide.analysis.db", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/analysis/module.c b/plugins/pychrysa/analysis/module.c index ecae63c..253fe76 100644 --- a/plugins/pychrysa/analysis/module.c +++ b/plugins/pychrysa/analysis/module.c @@ -34,6 +34,7 @@ #include "routine.h" #include "contents/module.h" #include "db/module.h" +#include "../access.h" @@ -91,6 +92,9 @@ bool add_analysis_module_to_python_module(PyObject *super) result &= add_analysis_contents_module_to_python_module(module); result &= add_analysis_db_module_to_python_module(module); + if (result) + register_access_to_python_module("pychrysalide.analysis", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/arch/module.c b/plugins/pychrysa/arch/module.c index d9eabed..ae90b5d 100644 --- a/plugins/pychrysa/arch/module.c +++ b/plugins/pychrysa/arch/module.c @@ -39,6 +39,7 @@ #include "raw.h" #include "vmpa.h" #include "arm/module.h" +#include "../access.h" #include "../helpers.h" @@ -155,6 +156,9 @@ bool add_arch_module_to_python_module(PyObject *super) result &= add_arch_arm_module_to_python_module(module); + if (result) + register_access_to_python_module("pychrysalide.arch", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/common/module.c b/plugins/pychrysa/common/module.c index cc2623a..7ff7528 100644 --- a/plugins/pychrysa/common/module.c +++ b/plugins/pychrysa/common/module.c @@ -28,6 +28,7 @@ #include "bits.h" #include "fnv1a.h" #include "pathname.h" +#include "../access.h" @@ -81,6 +82,9 @@ bool add_common_module_to_python_module(PyObject *super) result &= register_python_fnv1a(module); result &= register_python_pathname(module); + if (result) + register_access_to_python_module("pychrysalide.common", module); + acmtpm_exit: if (!result) diff --git a/plugins/pychrysa/core/module.c b/plugins/pychrysa/core/module.c index f42f08f..6c44197 100644 --- a/plugins/pychrysa/core/module.c +++ b/plugins/pychrysa/core/module.c @@ -30,6 +30,7 @@ #include "formats.h" #include "params.h" +#include "../access.h" @@ -82,6 +83,9 @@ bool add_core_module_to_python_module(PyObject *super) result &= register_python_formats(module); result &= register_python_params(module); + if (result) + register_access_to_python_module("pychrysalide.core", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/debug/module.c b/plugins/pychrysa/debug/module.c index db33a13..ea586be 100644 --- a/plugins/pychrysa/debug/module.c +++ b/plugins/pychrysa/debug/module.c @@ -27,6 +27,7 @@ #include "debugger.h" #include "gdbrsp/module.h" +#include "../access.h" @@ -80,6 +81,9 @@ bool add_debug_module_to_python_module(PyObject *super) result &= add_debug_gdbrsp_module_to_python_module(module); + if (result) + register_access_to_python_module("pychrysalide.debug", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/format/Makefile.am b/plugins/pychrysa/format/Makefile.am index bef87ca..71f0022 100644 --- a/plugins/pychrysa/format/Makefile.am +++ b/plugins/pychrysa/format/Makefile.am @@ -8,8 +8,7 @@ libpychrysaformat_la_SOURCES = \ symbol.h symbol.c libpychrysaformat_la_LIBADD = \ - dex/libpychrysaformatdex.la \ - elf/libpychrysaformatelf.la + dex/libpychrysaformatdex.la libpychrysaformat_la_LDFLAGS = @@ -19,4 +18,4 @@ AM_CPPFLAGS = $(LIBGTK_CFLAGS) $(LIBXML_CFLAGS) $(LIBPYTHON_CFLAGS) $(LIBPYGOBJE AM_CFLAGS = $(DEBUG_CFLAGS) $(WARNING_FLAGS) $(COMPLIANCE_FLAGS) -SUBDIRS = dex elf +SUBDIRS = dex diff --git a/plugins/pychrysa/format/module.c b/plugins/pychrysa/format/module.c index 29170b1..d15fea8 100644 --- a/plugins/pychrysa/format/module.c +++ b/plugins/pychrysa/format/module.c @@ -32,7 +32,7 @@ #include "format.h" #include "symbol.h" #include "dex/module.h" -#include "elf/module.h" +#include "../access.h" @@ -88,7 +88,9 @@ bool add_format_module_to_python_module(PyObject *super) result &= register_python_binary_symbol(module); result &= add_format_dex_module_to_python_module(module); - result &= add_format_elf_module_to_python_module(module); + + if (result) + register_access_to_python_module("pychrysalide.format", module); loading_failed: diff --git a/plugins/pychrysa/glibext/module.c b/plugins/pychrysa/glibext/module.c index f62b17b..01a2cc8 100644 --- a/plugins/pychrysa/glibext/module.c +++ b/plugins/pychrysa/glibext/module.c @@ -32,6 +32,7 @@ #include "bufferline.h" #include "configuration.h" #include "linegen.h" +#include "../access.h" @@ -88,6 +89,9 @@ bool add_glibext_module_to_python_module(PyObject *super) result &= register_python_generic_config(module); result &= register_python_line_generator(module); + if (result) + register_access_to_python_module("pychrysalide.glibext", module); + agmtpm_exit: assert(result); diff --git a/plugins/pychrysa/gui/module.c b/plugins/pychrysa/gui/module.c index 6a55151..192b1e6 100644 --- a/plugins/pychrysa/gui/module.c +++ b/plugins/pychrysa/gui/module.c @@ -31,6 +31,7 @@ #include "editem.h" #include "panels/module.h" +#include "../access.h" @@ -84,6 +85,9 @@ bool add_gui_module_to_python_module(PyObject *super) result &= add_gui_panels_module_to_python_module(module); + if (result) + register_access_to_python_module("pychrysalide.gui", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/gui/panels/module.c b/plugins/pychrysa/gui/panels/module.c index ea0e234..d5040e3 100644 --- a/plugins/pychrysa/gui/panels/module.c +++ b/plugins/pychrysa/gui/panels/module.c @@ -30,6 +30,7 @@ #include "log.h" #include "panel.h" +#include "../../access.h" @@ -82,6 +83,9 @@ bool add_gui_panels_module_to_python_module(PyObject *super) result &= register_python_panel_item(module); result &= register_python_log_panel(module); + if (result) + register_access_to_python_module("pychrysalide.gui.panels", module); + loading_failed: assert(result); diff --git a/plugins/pychrysa/helpers.h b/plugins/pychrysa/helpers.h index 3eee6a0..295ec28 100644 --- a/plugins/pychrysa/helpers.h +++ b/plugins/pychrysa/helpers.h @@ -21,8 +21,8 @@ */ -#ifndef _PLUGINS_HELPERS_H -#define _PLUGINS_HELPERS_H +#ifndef _PLUGINS_PYCHRYSA_HELPERS_H +#define _PLUGINS_PYCHRYSA_HELPERS_H #include <glib-object.h> @@ -90,4 +90,4 @@ bool _register_class_for_pygobject(PyObject *, GType, PyTypeObject *, PyTypeObje -#endif /* _PLUGINS_HELPERS_H */ +#endif /* _PLUGINS_PYCHRYSA_HELPERS_H */ diff --git a/plugins/pychrysa/pychrysa.c b/plugins/pychrysa/pychrysa.c index 4d32ee1..7c082d6 100644 --- a/plugins/pychrysa/pychrysa.c +++ b/plugins/pychrysa/pychrysa.c @@ -59,6 +59,10 @@ DEFINE_CHRYSALIDE_ACTIVE_PLUGIN("PyChrysalide", "Provides bindings to Python", "0.1.0", PGA_PLUGIN_INIT); +/* Note la nature du chargement */ +static bool _standalone = true; + + /* Fournit la révision du programme global. */ static PyObject *py_chrysalide_revision(PyObject *, PyObject *); @@ -395,6 +399,9 @@ PyMODINIT_FUNC PyInit_pychrysalide(void) return NULL; } + if (_standalone) + init_all_plugins(); + return result; } @@ -533,6 +540,8 @@ G_MODULE_EXPORT bool chrysalide_plugin_init(GPluginModule *plugin) /* Chargement du module pour Python */ + _standalone = false; + ret = PyImport_AppendInittab("pychrysalide", &PyInit_pychrysalide); if (ret == -1) diff --git a/plugins/readelf/header.c b/plugins/readelf/header.c index 33cf107..8b124a4 100644 --- a/plugins/readelf/header.c +++ b/plugins/readelf/header.c @@ -24,7 +24,7 @@ #include "header.h" -#include <format/elf/elf.h> +#include <plugins/elf/elf.h> #include <plugins/fmtp/parser.h> diff --git a/plugins/readelf/program.c b/plugins/readelf/program.c index 107f048..f63d10e 100644 --- a/plugins/readelf/program.c +++ b/plugins/readelf/program.c @@ -30,7 +30,7 @@ #include <i18n.h> #include <common/cpp.h> #include <common/extstr.h> -#include <format/elf/elf-int.h> +#include <plugins/elf/elf-int.h> #include <plugins/fmtp/parser.h> diff --git a/plugins/readelf/program.h b/plugins/readelf/program.h index 0710577..4c4cde4 100644 --- a/plugins/readelf/program.h +++ b/plugins/readelf/program.h @@ -26,7 +26,7 @@ #include <format/preload.h> -#include <format/elf/elf.h> +#include <plugins/elf/elf.h> diff --git a/plugins/readelf/reader.c b/plugins/readelf/reader.c index 6f81b3f..4d766da 100644 --- a/plugins/readelf/reader.c +++ b/plugins/readelf/reader.c @@ -24,7 +24,7 @@ #include "reader.h" -#include <format/elf/elf.h> +#include <plugins/elf/elf.h> #include <plugins/plugin-def.h> diff --git a/plugins/readelf/section.c b/plugins/readelf/section.c index 3a71225..ae3bd6f 100644 --- a/plugins/readelf/section.c +++ b/plugins/readelf/section.c @@ -30,8 +30,8 @@ #include <i18n.h> #include <common/cpp.h> #include <common/extstr.h> -#include <format/elf/elf-int.h> -#include <format/elf/section.h> +#include <plugins/elf/elf-int.h> +#include <plugins/elf/section.h> #include <plugins/fmtp/parser.h> diff --git a/plugins/readelf/section.h b/plugins/readelf/section.h index 60e8f34..33be014 100644 --- a/plugins/readelf/section.h +++ b/plugins/readelf/section.h @@ -26,7 +26,7 @@ #include <format/preload.h> -#include <format/elf/elf.h> +#include <plugins/elf/elf.h> diff --git a/plugins/readelf/strtab.c b/plugins/readelf/strtab.c index dc022cf..d8133fc 100644 --- a/plugins/readelf/strtab.c +++ b/plugins/readelf/strtab.c @@ -29,7 +29,7 @@ #include <arch/raw.h> -#include <format/elf/section.h> +#include <plugins/elf/section.h> diff --git a/plugins/readelf/strtab.h b/plugins/readelf/strtab.h index 89c178d..9adcd46 100644 --- a/plugins/readelf/strtab.h +++ b/plugins/readelf/strtab.h @@ -26,7 +26,7 @@ #include <format/preload.h> -#include <format/elf/elf.h> +#include <plugins/elf/elf.h> diff --git a/plugins/ropgadgets/plugin.c b/plugins/ropgadgets/plugin.c index 8b35647..11d1715 100644 --- a/plugins/ropgadgets/plugin.c +++ b/plugins/ropgadgets/plugin.c @@ -65,7 +65,8 @@ G_MODULE_EXPORT bool chrysalide_plugin_init(GPluginModule *plugin) GtkContainer *menubar; /* Support pour éléments */ GtkWidget *submenuitem; /* Sous-élément de menu */ - ref = G_OBJECT(get_editor_window()); /* FIXME */ + ref = G_OBJECT(get_editor_window()); + if (ref == NULL) return false; menubar = GTK_CONTAINER(g_object_get_data(ref, "menubar_plugins")); if (menubar == NULL) return false; |