diff options
author | Cyrille Bagard <nocbos@gmail.com> | 2015-11-04 22:02:31 (GMT) |
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committer | Cyrille Bagard <nocbos@gmail.com> | 2015-11-04 22:02:31 (GMT) |
commit | 4bafbf79e8143941d744c9c47e6fc9216fcec47a (patch) | |
tree | e0dc679daaa255d289c84ab0630e42256ab7a58c /tests/format/elf | |
parent | 72da49fdf05285169a9465b34f7869dafc4715ec (diff) |
Fixed some bugs and defined some first test cases.
git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@604 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a
Diffstat (limited to 'tests/format/elf')
-rw-r--r-- | tests/format/elf/Makefile | 16 | ||||
-rw-r--r-- | tests/format/elf/non_existing_binary.py | 26 | ||||
-rw-r--r-- | tests/format/elf/oob_section_name.asm | 94 | ||||
-rw-r--r-- | tests/format/elf/oob_section_name.py | 24 |
4 files changed, 160 insertions, 0 deletions
diff --git a/tests/format/elf/Makefile b/tests/format/elf/Makefile new file mode 100644 index 0000000..b14ff47 --- /dev/null +++ b/tests/format/elf/Makefile @@ -0,0 +1,16 @@ + +EXECUTABLES=tiny oob_section_name + +all: $(EXECUTABLES) + +tiny: tiny.o + $(ARM_CROSS)objcopy $< -O binary $@ + +oob_section_name: oob_section_name.o + $(ARM_CROSS)objcopy $< -O binary $@ + +%.o: %.asm + $(ARM_CROSS)as -c $< -o $@ + +clean: + rm -f *.o $(EXECUTABLES) diff --git a/tests/format/elf/non_existing_binary.py b/tests/format/elf/non_existing_binary.py new file mode 100644 index 0000000..47c9028 --- /dev/null +++ b/tests/format/elf/non_existing_binary.py @@ -0,0 +1,26 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- + + +# Eprouve quelques mécanismes de construction côté Python. + + +import pychrysalide + +from pychrysalide.analysis.contents import FileContent +from pychrysalide.format.elf import ElfFormat + +cnt = FileContent("non_existing_binary") + +print(cnt) + +print(cnt == None) + +try: + fmt = ElfFormat(cnt) +except TypeError as e: + fmt = None + +print(fmt) + +print(fmt == None) diff --git a/tests/format/elf/oob_section_name.asm b/tests/format/elf/oob_section_name.asm new file mode 100644 index 0000000..ad5b599 --- /dev/null +++ b/tests/format/elf/oob_section_name.asm @@ -0,0 +1,94 @@ + +.macro bump addr + .word \addr + 0x200000 +.endm + +.macro label_offset lbl + .word \lbl - str_table +.endm + + +elf_header: + + .byte 0x7F, 'E', 'L', 'F' @ e_ident + .byte 1 @ EI_CLASS => ELFCLASS32 + .byte 1 @ EI_DATA => ELFDATA2LSB + .byte 1 @ EI_VERSION => EV_CURRENT + .byte 0 @ EI_OSABI => ELFOSABI_SYSV + .byte 0 @ EI_ABIVERSION + + .word 0 + .short 0 + .byte 0 + + .short 2 @ e_type => ET_EXEC + .short 40 @ e_machine => EM_ARM + .word 1 @ e_version => EV_CURRENT + bump main @ e_entry + + .word program_headers @ e_phoff + .word section_headers @ e_shoff + + .word 0x80 @ e_flags => EF_ARM_NEW_ABI + + .short 52 @ e_ehsize + .short 32 @ e_phentsize + .short 1 @ e_phnum + .short 40 @ e_shentsize + .short 2 @ e_shnum + .short 1 @ e_shstrndx + + +program_headers: + + .word 1 @ p_type => PT_LOAD + .word O @ p_offset + .word 0x200000 @ p_vaddr + .word 0x200000 @ p_paddr + .word file_size @ p_filesz + .word file_size @ p_memsz + .word 0x5 @ p_flags => PF_X | PF_R + .word 0x1000 @ p_align + + +section_headers: + + .word 0xa0000000 @ label_offset text_lbl @ sh_name + .word 1 @ sh_type => SHT_PROGBITS + .word 0x6 @ sh_flags => SHF_ALLOC | SHF_EXECINSTR + bump main @ sh_addr + .word main @ sh_offset + .word file_size - main @ sh_size + .word 0 @ sh_link + .word 0 @ sh_info + .word 4 @ sh_addralign + .word 0 @ sh_entsize + + label_offset strtab_lbl @ sh_name + .word 3 @ sh_type => SHT_STRTAB + .word 0x0 @ sh_flags + .word 0x0 @ sh_addr + .word str_table @ sh_offset + .word 0xb0000000 @ sh_size + .word 0 @ sh_link + .word 0 @ sh_info + .word 1 @ sh_addralign + .word 0 @ sh_entsize + + +str_table: + + .byte 0, 0 +text_lbl: + .byte '.', 't', 'e', 'x', 't', 0 +strtab_lbl: + .byte '.', 's', 't', 'r', 't', 'a', 'b', 0 + + +main: + mov r7, #1 @ __NR_exit + mov r0, #42 @ $? + svc 0 + + +file_size: diff --git a/tests/format/elf/oob_section_name.py b/tests/format/elf/oob_section_name.py new file mode 100644 index 0000000..da58e29 --- /dev/null +++ b/tests/format/elf/oob_section_name.py @@ -0,0 +1,24 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- + + +# Une section peut avoir un index pour son nom démesurément grand (et invalide). +# +# Si la section des chaînes de caractères est toute aussi grande et invalide, +# l'index invalide reste suffisamment cohérent pour passer les premiers tests +# de extract_name_from_elf_string_section() et conduire ensuite à un plantage +# lors de l'accès concret, au moment de l'appel à strlen(). + + +import pychrysalide + +from pychrysalide.analysis.contents import FileContent +from pychrysalide.format.elf import ElfFormat + +cnt = FileContent("oob_section_name") + +fmt = ElfFormat(cnt) + +print(fmt) + +print(isinstance(fmt, ElfFormat)) |