Introduce a new plugin for computing API hashes.

23 files changed, 1530 insertions, 1 deletions

diff --git a/configure.ac b/configure.ac
index 3cf68d3..2b105ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -630,6 +630,10 @@ AC_CONFIG_FILES([Makefile
                  doc/Makefile
                  pixmaps/Makefile
                  plugins/Makefile
+                 plugins/apihashing/Makefile
+                 plugins/apihashing/python/Makefile
+                 plugins/apihashing/python/classics/Makefile
+                 plugins/apihashing/classics/Makefile
                  plugins/arm/Makefile
                  plugins/arm/python/Makefile
                  plugins/arm/python/v7/Makefile
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 3502cf0..3bc3fa5 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -14,6 +14,7 @@ endif
 # androhelpers
 SUBDIRS = \
 	$(PYTHON3_SUBDIRS) \
+	apihashing \
 	arm \
 	bootimg \
 	devdbg \
diff --git a/plugins/apihashing/Makefile.am b/plugins/apihashing/Makefile.am
new file mode 100644
index 0000000..8ea8a1a
--- /dev/null
+++ b/plugins/apihashing/Makefile.am
@@ -0,0 +1,64 @@
+
+lib_LTLIBRARIES = libapihashing.la
+
+libdir = $(pluginslibdir)
+
+
+if BUILD_PYTHON_PACKAGE
+
+RUN_PATH = -Wl,-rpath,'$$ORIGIN/../chrysalide-libs:$$ORIGIN'
+
+else
+
+RUN_PATH = -Wl,-rpath,'$$ORIGIN'
+
+endif
+
+if BUILD_PYTHON3_BINDINGS
+
+PYTHON3_LIBADD = python/libapihashingpython.la
+
+if BUILD_DISCARD_LOCAL
+
+if BUILD_PYTHON_PACKAGE
+PYTHON3_RUN_PATH = -Wl,-rpath,'$$ORIGIN/..'
+else
+PYTHON3_RUN_PATH = -Wl,-rpath,'$$ORIGIN'
+endif
+
+else
+
+PYTHON3_RUN_PATH = -Wl,-rpath,$(abs_top_srcdir)/plugins/pychrysalide/.libs
+
+endif
+
+PYTHON3_LDFLAGS = $(PYTHON3_RUN_PATH) -L$(top_srcdir)/plugins/pychrysalide/.libs -l:pychrysalide.so
+
+PYTHON3_SUBDIRS = python
+
+endif
+
+
+libapihashing_la_SOURCES =					\
+	apihash.h apihash.c						\
+	core.h core.c
+
+libapihashing_la_LIBADD =					\
+	$(PYTHON3_LIBADD)						\
+	classics/libapihashingclassics.la
+
+libapihashing_la_CFLAGS = $(TOOLKIT_CFLAGS) $(LIBXML_CFLAGS) -I$(top_srcdir)/src
+
+libapihashing_la_LDFLAGS =					\
+	-avoid-version							\
+	-L$(top_srcdir)/src/.libs -lchrysacore	\
+	-L$(top_srcdir)/plugins/pe/.libs -lpe	\
+	$(RUN_PATH) $(PYTHON3_LDFLAGS)
+
+
+devdir = $(includedir)/chrysalide/$(subdir)
+
+dev_HEADERS = $(libapihashing_la_SOURCES:%c=)
+
+
+SUBDIRS = $(PYTHON3_SUBDIRS) classics
diff --git a/plugins/apihashing/apihash.c b/plugins/apihashing/apihash.c
new file mode 100644
index 0000000..3313073
--- /dev/null
+++ b/plugins/apihashing/apihash.c
@@ -0,0 +1,134 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * apihash.c - détermination d'API par empreinte de fonction
+ *
+ * Copyright (C) 2023 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 "apihash.h"
+
+
+#include <analysis/scan/patterns/modifier-int.h>
+
+
+
+/* ----------------------- RECHERCHE D'UN MOTIF DE TEXTE BRUT ----------------------- */
+
+
+/* Initialise la classe des transmissions en empreintes d'API. */
+static void g_api_hash_modifier_class_init(GApiHashModifierClass *klass);
+
+/* Initialise une instance de transmission en empreinte d'API. */
+static void g_api_hash_modifier_init(GApiHashModifier *);
+
+/* Supprime toutes les références externes. */
+static void g_api_hash_modifier_dispose(GApiHashModifier *);
+
+/* Procède à la libération totale de la mémoire. */
+static void g_api_hash_modifier_finalize(GApiHashModifier *);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                         RECHERCHE D'UN MOTIF DE TEXTE BRUT                         */
+/* ---------------------------------------------------------------------------------- */
+
+
+/* Indique le type défini pour une transormation en empreinte d'API. */
+G_DEFINE_TYPE(GApiHashModifier, g_api_hash_modifier, G_TYPE_SCAN_TOKEN_MODIFIER);
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : klass = classe à initialiser.                                *
+*                                                                             *
+*  Description : Initialise la classe des transmissions en empreintes d'API.  *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_api_hash_modifier_class_init(GApiHashModifierClass *klass)
+{
+    GObjectClass *object;                   /* Autre version de la classe  */
+
+    object = G_OBJECT_CLASS(klass);
+
+    object->dispose = (GObjectFinalizeFunc/* ! */)g_api_hash_modifier_dispose;
+    object->finalize = (GObjectFinalizeFunc)g_api_hash_modifier_finalize;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = instance à initialiser.                           *
+*                                                                             *
+*  Description : Initialise une instance de transmission en empreinte d'API.  *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_api_hash_modifier_init(GApiHashModifier *modifier)
+{
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = instance d'objet GLib à traiter.                  *
+*                                                                             *
+*  Description : Supprime toutes les références externes.                     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_api_hash_modifier_dispose(GApiHashModifier *modifier)
+{
+    G_OBJECT_CLASS(g_api_hash_modifier_parent_class)->dispose(G_OBJECT(modifier));
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = instance d'objet GLib à traiter.                  *
+*                                                                             *
+*  Description : Procède à la libération totale de la mémoire.                *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_api_hash_modifier_finalize(GApiHashModifier *modifier)
+{
+    G_OBJECT_CLASS(g_api_hash_modifier_parent_class)->finalize(G_OBJECT(modifier));
+
+}
diff --git a/plugins/apihashing/apihash.h b/plugins/apihashing/apihash.h
new file mode 100644
index 0000000..cfc3365
--- /dev/null
+++ b/plugins/apihashing/apihash.h
@@ -0,0 +1,55 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * apihash.h - prototypes pour la détermination d'API par empreinte de fonction
+ *
+ * Copyright (C) 2023 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_APIHASHING_APIHASH_H
+#define _PLUGINS_APIHASHING_APIHASH_H
+
+
+#include <glib-object.h>
+
+
+#include <analysis/scan/patterns/modifier.h>
+
+
+
+#define G_TYPE_API_HASH_MODIFIER            g_api_hash_modifier_get_type()
+#define G_API_HASH_MODIFIER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_API_HASH_MODIFIER, GApiHashModifier))
+#define G_IS_API_HASH_MODIFIER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_API_HASH_MODIFIER))
+#define G_API_HASH_MODIFIER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_API_HASH_MODIFIER, GApiHashModifierClass))
+#define G_IS_API_HASH_MODIFIER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_API_HASH_MODIFIER))
+#define G_API_HASH_MODIFIER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_API_HASH_MODIFIER, GApiHashModifierClass))
+
+
+/* Transormation en empreinte d'API (instance) */
+typedef GScanTokenModifier GApiHashModifier;
+
+/* Transormation en empreinte d'API (classe) */
+typedef GScanTokenModifierClass GApiHashModifierClass;
+
+
+/* Indique le type défini pour une transormation en empreinte d'API. */
+GType g_api_hash_modifier_get_type(void);
+
+
+
+#endif  /* _PLUGINS_APIHASHING_APIHASH_H */
diff --git a/plugins/apihashing/classics/Makefile.am b/plugins/apihashing/classics/Makefile.am
new file mode 100644
index 0000000..813033f
--- /dev/null
+++ b/plugins/apihashing/classics/Makefile.am
@@ -0,0 +1,12 @@
+
+noinst_LTLIBRARIES = libapihashingclassics.la
+
+libapihashingclassics_la_SOURCES =			\
+	ror13.h ror13.c
+
+libapihashingclassics_la_CFLAGS = $(TOOLKIT_CFLAGS) $(LIBXML_CFLAGS) -I$(top_srcdir)/src
+
+
+devdir = $(includedir)/chrysalide-$(subdir)
+
+dev_HEADERS = $(libapihashingclassics_la_SOURCES:%c=)
diff --git a/plugins/apihashing/classics/ror13.c b/plugins/apihashing/classics/ror13.c
new file mode 100644
index 0000000..f940a4b
--- /dev/null
+++ b/plugins/apihashing/classics/ror13.c
@@ -0,0 +1,288 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * ror13.c - transormation en empreinte d'API ror13
+ *
+ * Copyright (C) 2023 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 "ror13.h"
+
+
+#include <malloc.h>
+#include <string.h>
+
+
+#include <analysis/scan/patterns/modifier-int.h>
+
+
+
+
+/* ----------------------- RECHERCHE D'UN MOTIF DE TEXTE BRUT ----------------------- */
+
+
+/* Initialise la classe des transmissions en empreintes ror13. */
+static void g_scan_ror13_modifier_class_init(GScanRor13ModifierClass *klass);
+
+/* Initialise une instance de transmission en empreinte ror13. */
+static void g_scan_ror13_modifier_init(GScanRor13Modifier *);
+
+/* Supprime toutes les références externes. */
+static void g_scan_ror13_modifier_dispose(GScanRor13Modifier *);
+
+/* Procède à la libération totale de la mémoire. */
+static void g_scan_ror13_modifier_finalize(GScanRor13Modifier *);
+
+
+
+/* --------------------- IMPLEMENTATION DES FONCTIONS DE CLASSE --------------------- */
+
+
+/* Fournit le nom d'appel d'un modificateur pour motif. */
+static char *g_scan_ror13_modifier_get_name(const GScanRor13Modifier *);
+
+/* Calcule l'empreinte ror13 d'un motif de recherche. */
+static uint32_t compute_ror13(const sized_binary_t *);
+
+/* Transforme une séquence d'octets pour motif de recherche. */
+static bool g_scan_ror13_modifier_transform(const GScanRor13Modifier *, const sized_binary_t *, size_t, sized_binary_t **, size_t *);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                         RECHERCHE D'UN MOTIF DE TEXTE BRUT                         */
+/* ---------------------------------------------------------------------------------- */
+
+
+/* Indique le type défini pour une transormation en encodage Ror13. */
+G_DEFINE_TYPE(GScanRor13Modifier, g_scan_ror13_modifier, G_TYPE_API_HASH_MODIFIER);
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : klass = classe à initialiser.                                *
+*                                                                             *
+*  Description : Initialise la classe des transmissions en empreintes ror13.  *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_scan_ror13_modifier_class_init(GScanRor13ModifierClass *klass)
+{
+    GObjectClass *object;                   /* Autre version de la classe  */
+    GScanTokenModifierClass *modifier;      /* Version de classe parente   */
+
+    object = G_OBJECT_CLASS(klass);
+
+    object->dispose = (GObjectFinalizeFunc/* ! */)g_scan_ror13_modifier_dispose;
+    object->finalize = (GObjectFinalizeFunc)g_scan_ror13_modifier_finalize;
+
+    modifier = G_SCAN_TOKEN_MODIFIER_CLASS(klass);
+
+    modifier->get_name = (get_scan_modifier_name_fc)g_scan_ror13_modifier_get_name;
+
+    modifier->transform = (transform_scan_token_fc)g_scan_ror13_modifier_transform;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = instance à initialiser.                           *
+*                                                                             *
+*  Description : Initialise une instance de transmission en empreinte ror13.  *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_scan_ror13_modifier_init(GScanRor13Modifier *modifier)
+{
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = instance d'objet GLib à traiter.                  *
+*                                                                             *
+*  Description : Supprime toutes les références externes.                     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_scan_ror13_modifier_dispose(GScanRor13Modifier *modifier)
+{
+    G_OBJECT_CLASS(g_scan_ror13_modifier_parent_class)->dispose(G_OBJECT(modifier));
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = instance d'objet GLib à traiter.                  *
+*                                                                             *
+*  Description : Procède à la libération totale de la mémoire.                *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void g_scan_ror13_modifier_finalize(GScanRor13Modifier *modifier)
+{
+    G_OBJECT_CLASS(g_scan_ror13_modifier_parent_class)->finalize(G_OBJECT(modifier));
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Construit un modificateur livrant des empreintes ror13.      *
+*                                                                             *
+*  Retour      : Mécanisme mis en place.                                      *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+GScanTokenModifier *g_scan_ror13_modifier_new(void)
+{
+    GScanTokenModifier *result;                    /* Structure à retourner       */
+
+    result = g_object_new(G_TYPE_SCAN_ROR13_MODIFIER, NULL);
+
+    return result;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                       IMPLEMENTATION DES FONCTIONS DE CLASSE                       */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = modificateur à consulter.                         *
+*                                                                             *
+*  Description : Fournit le nom d'appel d'un modificateur pour motif.         *
+*                                                                             *
+*  Retour      : Désignation humaine.                                         *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static char *g_scan_ror13_modifier_get_name(const GScanRor13Modifier *modifier)
+{
+    char *result;                           /* Désignation à retourner     */
+
+    result = strdup("ror13");
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : src = séquence d'octets à traiter.                           *
+*                                                                             *
+*  Description : Calcule l'empreinte ror13 d'un motif de recherche.           *
+*                                                                             *
+*  Retour      : Valeur entière de l'empreinte déterminée.                    *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static uint32_t compute_ror13(const sized_binary_t *src)
+{
+    uint32_t result;                        /* Valeur à retourner          */
+    size_t i;                               /* Boucle de parcours          */
+
+    result = 0;
+
+    for (i = 0; i < src->len; i++)
+        result = src->data[i] + ((result << 19) | (result >> 13));
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : modifier = modificateur à solliciter.                        *
+*                src      = séquence d'octets à traiter.                      *
+*                scount   = quantité de ces séquences.                        *
+*                dest     = nouvelle(s) séquence(s) d'octets obtenue(s) [OUT] *
+*                dcount   = quantité de ces séquences.                        *
+*                                                                             *
+*  Description : Transforme une séquence d'octets pour motif de recherche.    *
+*                                                                             *
+*  Retour      : Bilan de l'opération : succès ou échec.                      *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static bool g_scan_ror13_modifier_transform(const GScanRor13Modifier *modifier, const sized_binary_t *src, size_t scount, sized_binary_t **dest, size_t *dcount)
+{
+    bool result;                            /* Bilan d'opération à renvoyer*/
+    sized_binary_t *binary;                 /* Raccourci vers le stockage  */
+    size_t i;                               /* Boucle de parcours #1       */
+    const sized_binary_t *_src;             /* Source courante             */
+    uint32_t hash;                          /* Valeur d'empreinte calculée */
+
+    result = true;
+
+    *dcount = scount;
+    *dest = calloc(*dcount, sizeof(sized_binary_t));
+
+    binary = &(*dest)[0];
+
+    for (i = 0; i < scount && result; i++)
+    {
+        _src = src + i;
+
+        hash = compute_ror13(_src);
+
+        binary->data = malloc(sizeof(hash) * sizeof(bin_t));
+        binary->len = sizeof(hash);
+
+        memcpy(binary->data, &hash, sizeof(hash));
+
+    }
+
+    return result;
+
+}
diff --git a/plugins/apihashing/classics/ror13.h b/plugins/apihashing/classics/ror13.h
new file mode 100644
index 0000000..43480bd
--- /dev/null
+++ b/plugins/apihashing/classics/ror13.h
@@ -0,0 +1,58 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * ror13.h - prototypes pour la transormation en empreinte d'API ror13
+ *
+ * Copyright (C) 2023 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_APIHASHING_CLASSICS_ROR13_H
+#define _PLUGINS_APIHASHING_CLASSICS_ROR13_H
+
+
+#include <glib-object.h>
+
+
+#include "../apihash.h"
+
+
+
+#define G_TYPE_SCAN_ROR13_MODIFIER            g_scan_ror13_modifier_get_type()
+#define G_SCAN_ROR13_MODIFIER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_SCAN_ROR13_MODIFIER, GScanRor13Modifier))
+#define G_IS_SCAN_ROR13_MODIFIER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_SCAN_ROR13_MODIFIER))
+#define G_SCAN_ROR13_MODIFIER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_SCAN_ROR13_MODIFIER, GScanRor13ModifierClass))
+#define G_IS_SCAN_ROR13_MODIFIER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_SCAN_ROR13_MODIFIER))
+#define G_SCAN_ROR13_MODIFIER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_SCAN_ROR13_MODIFIER, GScanRor13ModifierClass))
+
+
+/* Transormation en empreinte d'API ror13 (instance) */
+typedef GApiHashModifier GScanRor13Modifier;
+
+/* Transormation en empreinte d'API ror13 (classe) */
+typedef GApiHashModifierClass GScanRor13ModifierClass;
+
+
+/* Indique le type défini pour une transormation en empreinte ror13. */
+GType g_scan_ror13_modifier_get_type(void);
+
+/* Construit un modificateur livrant des empreintes ror13. */
+GScanTokenModifier *g_scan_ror13_modifier_new(void);
+
+
+
+#endif  /* _PLUGINS_APIHASHING_CLASSICS_ROR13_H */
diff --git a/plugins/apihashing/core.c b/plugins/apihashing/core.c
new file mode 100644
index 0000000..dbf1cef
--- /dev/null
+++ b/plugins/apihashing/core.c
@@ -0,0 +1,91 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * core.c - prototypes pour le calcul d'encodages
+ *
+ * Copyright (C) 2023 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 Chrysalide.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "core.h"
+
+
+#include <analysis/scan/core.h>
+#include <plugins/self.h>
+
+
+#ifdef INCLUDE_PYTHON3_BINDINGS
+#   include "python/module.h"
+#   include "python/classics/module.h"
+#endif
+#include "classics/ror13.h"
+
+
+#ifdef INCLUDE_PYTHON3_BINDINGS_
+#   define PG_REQ RL("PyChrysalide")
+#else
+#   define PG_REQ NO_REQ
+#endif
+
+
+
+DEFINE_CHRYSALIDE_PLUGIN("ApiHashing", "API hash computing as ROST modifiers",
+                         PACKAGE_VERSION, CHRYSALIDE_WEBSITE("doc/formats"),
+                         PG_REQ, AL(PGA_PLUGIN_INIT));
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : plugin = greffon à manipuler.                                *
+*                                                                             *
+*  Description : Prend acte du chargement du greffon.                         *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+G_MODULE_EXPORT bool chrysalide_plugin_init(GPluginModule *plugin)
+{
+    bool result;                            /* Bilan à retourner           */
+
+    result = true;
+
+#define REGISTER_SCAN_MODIFIER(m)                       \
+    ({                                                  \
+        GScanTokenModifier *__mod;                      \
+        bool __status;                                  \
+        __mod = m;                                      \
+        __status = register_scan_token_modifier(__mod); \
+        g_object_unref(G_OBJECT(__mod));                \
+        __status;                                       \
+    })
+
+    if (result) result = REGISTER_SCAN_MODIFIER(g_scan_ror13_modifier_new());
+
+#ifdef INCLUDE_PYTHON3_BINDINGS
+
+    if (result) result = add_apihashing_module_to_python_module();
+    if (result) result = register_apihashing_classics_modifiers();
+
+#endif
+
+    return result;
+
+}
diff --git a/plugins/apihashing/core.h b/plugins/apihashing/core.h
new file mode 100644
index 0000000..75a6e73
--- /dev/null
+++ b/plugins/apihashing/core.h
@@ -0,0 +1,38 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * core.h - prototypes pour le calcul d'encodages
+ *
+ * Copyright (C) 2023 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 Chrysalide.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _PLUGINS_ENCODINGS_CORE_H
+#define _PLUGINS_ENCODINGS_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_ENCODINGS_CORE_H */
diff --git a/plugins/apihashing/python/Makefile.am b/plugins/apihashing/python/Makefile.am
new file mode 100644
index 0000000..d94218d
--- /dev/null
+++ b/plugins/apihashing/python/Makefile.am
@@ -0,0 +1,20 @@
+
+noinst_LTLIBRARIES = libapihashingpython.la
+
+libapihashingpython_la_SOURCES =			\
+	apihash.h apihash.c						\
+	module.h module.c
+
+libapihashingpython_la_LIBADD =	 			\
+        classics/libapihashingpythonclassics.la
+
+libapihashingpython_la_CFLAGS = $(TOOLKIT_CFLAGS) $(LIBXML_CFLAGS) $(LIBPYTHON_CFLAGS) $(LIBPYGOBJECT_CFLAGS) \
+	-I$(top_srcdir)/src -DNO_IMPORT_PYGOBJECT
+
+
+devdir = $(includedir)/chrysalide/$(subdir)
+
+dev_HEADERS = $(libapihashingpython_la_SOURCES:%c=)
+
+
+SUBDIRS = classics
diff --git a/plugins/apihashing/python/apihash.c b/plugins/apihashing/python/apihash.c
new file mode 100644
index 0000000..a3ae519
--- /dev/null
+++ b/plugins/apihashing/python/apihash.c
@@ -0,0 +1,212 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * base64.c - équivalent Python du fichier "plugins/encodings/rost/base64.c"
+ *
+ * Copyright (C) 2023 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "apihash.h"
+
+
+#include <pygobject.h>
+
+
+#include <i18n.h>
+#include <plugins/pychrysalide/access.h>
+#include <plugins/pychrysalide/helpers.h>
+#include <plugins/pychrysalide/analysis/scan/patterns/modifier.h>
+
+
+#include "../apihash.h"
+
+
+
+CREATE_DYN_CONSTRUCTOR(api_hash_modifier, G_TYPE_API_HASH_MODIFIER);
+
+/* Initialise une instance sur la base du dérivé de GObject. */
+static int py_api_hash_modifier_init(PyObject *, PyObject *, PyObject *);
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = objet à initialiser (théoriquement).                  *
+*                args = arguments fournis à l'appel.                          *
+*                kwds = arguments de type key=val fournis.                    *
+*                                                                             *
+*  Description : Initialise une instance sur la base du dérivé de GObject.    *
+*                                                                             *
+*  Retour      : 0.                                                           *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static int py_api_hash_modifier_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    int ret;                                /* Bilan de lecture des args.  */
+
+#define API_HASH_MODIFIER_DOC                                           \
+    "The *ApiHashModifier* class is the base object for all algorithms" \
+    " involed in malwares and revolving API functions to call from"     \
+    " a hash value.\n"                                                  \
+    "\n"                                                                \
+    "Instances can be created using the following constructor:\n"       \
+    "\n"                                                                \
+    "    ApiHashModifier()"
+
+    /* Initialisation d'un objet GLib */
+
+    ret = forward_pygobjet_init(self);
+    if (ret == -1) return -1;
+
+    return 0;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Fournit un accès à une définition de type à diffuser.        *
+*                                                                             *
+*  Retour      : Définition d'objet pour Python.                              *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+PyTypeObject *get_python_api_hash_modifier_type(void)
+{
+    static PyMethodDef py_api_hash_modifier_methods[] = {
+        { NULL }
+    };
+
+    static PyGetSetDef py_api_hash_modifier_getseters[] = {
+        { NULL }
+    };
+
+    static PyTypeObject py_api_hash_modifier_type = {
+
+        PyVarObject_HEAD_INIT(NULL, 0)
+
+        .tp_name        = "pychrysalide.plugins.apihashing.ApiHashModifier",
+        .tp_basicsize   = sizeof(PyGObject),
+
+        .tp_flags       = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+
+        .tp_doc         = API_HASH_MODIFIER_DOC,
+
+        .tp_methods     = py_api_hash_modifier_methods,
+        .tp_getset      = py_api_hash_modifier_getseters,
+
+        .tp_init        = py_api_hash_modifier_init,
+        .tp_new         = py_api_hash_modifier_new,
+
+    };
+
+    return &py_api_hash_modifier_type;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Prend en charge l'objet 'pychrysalide.....ApiHashModifier'.  *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool ensure_python_api_hash_modifier_is_registered(void)
+{
+    PyTypeObject *type;                     /* Type Python Base64Modifier */
+    PyObject *module;                       /* Module à recompléter        */
+    PyObject *dict;                         /* Dictionnaire du module      */
+
+    type = get_python_api_hash_modifier_type();
+
+    if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
+    {
+        module = get_access_to_python_module("pychrysalide.plugins.apihashing");
+
+        dict = PyModule_GetDict(module);
+
+        if (!ensure_python_scan_token_modifier_is_registered())
+            return false;
+
+        if (!register_class_for_pygobject(dict, G_TYPE_API_HASH_MODIFIER, type))
+            return false;
+
+    }
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
+*                dst = destination des valeurs récupérées en cas de succès.   *
+*                                                                             *
+*  Description : Tente de convertir en transformation par empreinte d'API.    *
+*                                                                             *
+*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+int convert_to_api_hash_modifier(PyObject *arg, void *dst)
+{
+    int result;                             /* Bilan à retourner           */
+
+    result = PyObject_IsInstance(arg, (PyObject *)get_python_api_hash_modifier_type());
+
+    switch (result)
+    {
+        case -1:
+            /* L'exception est déjà fixée par Python */
+            result = 0;
+            break;
+
+        case 0:
+            PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to API hash modifier");
+            break;
+
+        case 1:
+            *((GApiHashModifier **)dst) = G_API_HASH_MODIFIER(pygobject_get(arg));
+            break;
+
+        default:
+            assert(false);
+            break;
+
+    }
+
+    return result;
+
+}
diff --git a/plugins/apihashing/python/apihash.h b/plugins/apihashing/python/apihash.h
new file mode 100644
index 0000000..5474d49
--- /dev/null
+++ b/plugins/apihashing/python/apihash.h
@@ -0,0 +1,45 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * base64.h - équivalent Python du fichier "plugins/encodings/rost/base64.h"
+ *
+ * Copyright (C) 2023 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef _PLUGINS_ENCODINGS_PYTHON_ROST_BASE64_H
+#define _PLUGINS_ENCODINGS_PYTHON_ROST_BASE64_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/* Fournit un accès à une définition de type à diffuser. */
+PyTypeObject *get_python_api_hash_modifier_type(void);
+
+/* Prend en charge l'objet 'pychrysalide.plugins.apihashing.ApiHashModifier'. */
+bool ensure_python_api_hash_modifier_is_registered(void);
+
+/* Tente de convertir en transformation par empreinte d'API. */
+int convert_to_api_hash_modifier(PyObject *, void *);
+
+
+
+#endif  /* _PLUGINS_ENCODINGS_PYTHON_ROST_BASE64_H */
diff --git a/plugins/apihashing/python/classics/Makefile.am b/plugins/apihashing/python/classics/Makefile.am
new file mode 100644
index 0000000..4a50df3
--- /dev/null
+++ b/plugins/apihashing/python/classics/Makefile.am
@@ -0,0 +1,14 @@
+
+noinst_LTLIBRARIES = libapihashingpythonclassics.la
+
+libapihashingpythonclassics_la_SOURCES = 	\
+	module.h module.c						\
+	ror13.h ror13.c
+
+libapihashingpythonclassics_la_CFLAGS = $(TOOLKIT_CFLAGS) $(LIBXML_CFLAGS) $(LIBPYTHON_CFLAGS) $(LIBPYGOBJECT_CFLAGS) \
+	-I$(top_srcdir)/src -DNO_IMPORT_PYGOBJECT
+
+
+devdir = $(includedir)/chrysalide-$(subdir)
+
+dev_HEADERS = $(libapihashingpythonclassics_la_SOURCES:%c=)
diff --git a/plugins/apihashing/python/classics/module.c b/plugins/apihashing/python/classics/module.c
new file mode 100644
index 0000000..70c48e0
--- /dev/null
+++ b/plugins/apihashing/python/classics/module.c
@@ -0,0 +1,64 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * module.c - intégration du répertoire classics en tant que module
+ *
+ * Copyright (C) 2023 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "module.h"
+
+
+#include <assert.h>
+#include <Python.h>
+
+
+#include <plugins/pychrysalide/access.h>
+#include <plugins/pychrysalide/helpers.h>
+
+
+#include "ror13.h"
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Intègre les modificateurs d'empreintes classiques pour ROST. *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool register_apihashing_classics_modifiers(void)
+{
+    bool result;                            /* Bilan à retourner           */
+
+    result = true;
+
+    if (result) result = ensure_python_scan_ror13_modifier_is_registered();
+
+    assert(result);
+
+    return result;
+
+}
diff --git a/plugins/apihashing/python/classics/module.h b/plugins/apihashing/python/classics/module.h
new file mode 100644
index 0000000..ee0e098
--- /dev/null
+++ b/plugins/apihashing/python/classics/module.h
@@ -0,0 +1,38 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * module.h - prototypes pour l'intégration du répertoire classics en tant que module
+ *
+ * Copyright (C) 2023 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef _PLUGINS_ENCODINGS_PYTHON_ROST_MODULE_H
+#define _PLUGINS_ENCODINGS_PYTHON_ROST_MODULE_H
+
+
+#include <stdbool.h>
+
+
+
+/* Intègre les modificateurs d'empreintes classiques pour ROST. */
+bool register_apihashing_classics_modifiers(void);
+
+
+
+#endif  /* _PLUGINS_ENCODINGS_PYTHON_ROST_MODULE_H */
diff --git a/plugins/apihashing/python/classics/ror13.c b/plugins/apihashing/python/classics/ror13.c
new file mode 100644
index 0000000..0ecad1c
--- /dev/null
+++ b/plugins/apihashing/python/classics/ror13.c
@@ -0,0 +1,211 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * ror13.c - équivalent Python du fichier "plugins/apihashing/classics/ror13.c"
+ *
+ * Copyright (C) 2023 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "ror13.h"
+
+
+#include <pygobject.h>
+
+
+#include <i18n.h>
+#include <plugins/pychrysalide/access.h>
+#include <plugins/pychrysalide/helpers.h>
+
+
+#include "../apihash.h"
+#include "../../classics/ror13.h"
+
+
+
+CREATE_DYN_CONSTRUCTOR(scan_ror13_modifier, G_TYPE_SCAN_ROR13_MODIFIER);
+
+/* Initialise une instance sur la base du dérivé de GObject. */
+static int py_scan_ror13_modifier_init(PyObject *, PyObject *, PyObject *);
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = objet à initialiser (théoriquement).                  *
+*                args = arguments fournis à l'appel.                          *
+*                kwds = arguments de type key=val fournis.                    *
+*                                                                             *
+*  Description : Initialise une instance sur la base du dérivé de GObject.    *
+*                                                                             *
+*  Retour      : 0.                                                           *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static int py_scan_ror13_modifier_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    int ret;                                /* Bilan de lecture des args.  */
+
+#define SCAN_ROR13_MODIFIER_DOC                                    \
+    "The *Ror13Modifier* class transforms a byte pattern into its" \
+    " ror13 encoded form.\n"                                       \
+    "\n"                                                            \
+    "Instances can be created using the following constructor:\n"   \
+    "\n"                                                            \
+    "    Ror13Modifier()"
+
+    /* Initialisation d'un objet GLib */
+
+    ret = forward_pygobjet_init(self);
+    if (ret == -1) return -1;
+
+    return 0;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Fournit un accès à une définition de type à diffuser.        *
+*                                                                             *
+*  Retour      : Définition d'objet pour Python.                              *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+PyTypeObject *get_python_scan_ror13_modifier_type(void)
+{
+    static PyMethodDef py_scan_ror13_modifier_methods[] = {
+        { NULL }
+    };
+
+    static PyGetSetDef py_scan_ror13_modifier_getseters[] = {
+        { NULL }
+    };
+
+    static PyTypeObject py_scan_ror13_modifier_type = {
+
+        PyVarObject_HEAD_INIT(NULL, 0)
+
+        .tp_name        = "pychrysalide.analysis.scan.patterns.modifiers.Ror13Modifier",
+        .tp_basicsize   = sizeof(PyGObject),
+
+        .tp_flags       = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+
+        .tp_doc         = SCAN_ROR13_MODIFIER_DOC,
+
+        .tp_methods     = py_scan_ror13_modifier_methods,
+        .tp_getset      = py_scan_ror13_modifier_getseters,
+
+        .tp_init        = py_scan_ror13_modifier_init,
+        .tp_new         = py_scan_ror13_modifier_new,
+
+    };
+
+    return &py_scan_ror13_modifier_type;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Prend en charge l'objet 'pychrysalide....Ror13Modifier'.     *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool ensure_python_scan_ror13_modifier_is_registered(void)
+{
+    PyTypeObject *type;                     /* Type Python Ror13Modifier */
+    PyObject *module;                       /* Module à recompléter        */
+    PyObject *dict;                         /* Dictionnaire du module      */
+
+    type = get_python_scan_ror13_modifier_type();
+
+    if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
+    {
+        module = get_access_to_python_module("pychrysalide.analysis.scan.patterns.modifiers");
+
+        dict = PyModule_GetDict(module);
+
+        if (!ensure_python_api_hash_modifier_is_registered())
+            return false;
+
+        if (!register_class_for_pygobject(dict, G_TYPE_SCAN_ROR13_MODIFIER, type))
+            return false;
+
+    }
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
+*                dst = destination des valeurs récupérées en cas de succès.   *
+*                                                                             *
+*  Description : Tente de convertir en transformation en empreinte ror13.     *
+*                                                                             *
+*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+int convert_to_scan_ror13_modifier(PyObject *arg, void *dst)
+{
+    int result;                             /* Bilan à retourner           */
+
+    result = PyObject_IsInstance(arg, (PyObject *)get_python_scan_ror13_modifier_type());
+
+    switch (result)
+    {
+        case -1:
+            /* L'exception est déjà fixée par Python */
+            result = 0;
+            break;
+
+        case 0:
+            PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to ror13 modifier");
+            break;
+
+        case 1:
+            *((GScanRor13Modifier **)dst) = G_SCAN_ROR13_MODIFIER(pygobject_get(arg));
+            break;
+
+        default:
+            assert(false);
+            break;
+
+    }
+
+    return result;
+
+}
diff --git a/plugins/apihashing/python/classics/ror13.h b/plugins/apihashing/python/classics/ror13.h
new file mode 100644
index 0000000..021a516
--- /dev/null
+++ b/plugins/apihashing/python/classics/ror13.h
@@ -0,0 +1,45 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * ror13.h - équivalent Python du fichier "plugins/apihashing/classics/ror13.h"
+ *
+ * Copyright (C) 2023 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef _PLUGINS_APIHASHING_PYTHON_CLASSICS_ROR13_H
+#define _PLUGINS_APIHASHING_PYTHON_CLASSICS_ROR13_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/* Fournit un accès à une définition de type à diffuser. */
+PyTypeObject *get_python_scan_ror13_modifier_type(void);
+
+/* Prend en charge l'objet 'pychrysalide.analysis.scan.patterns.modifiers.Ror13Modifier'. */
+bool ensure_python_scan_ror13_modifier_is_registered(void);
+
+/* Tente de convertir en transformation en empreinte ror13. */
+int convert_to_scan_ror13_modifier(PyObject *, void *);
+
+
+
+#endif  /* _PLUGINS_APIHASHING_PYTHON_CLASSICS_ROR13_H */
diff --git a/plugins/apihashing/python/module.c b/plugins/apihashing/python/module.c
new file mode 100644
index 0000000..588a0d8
--- /dev/null
+++ b/plugins/apihashing/python/module.c
@@ -0,0 +1,87 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * module.c - intégration du répertoire apihashing en tant que module
+ *
+ * Copyright (C) 2020 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "module.h"
+
+
+#include <assert.h>
+#include <Python.h>
+
+
+#include <plugins/pychrysalide/access.h>
+#include <plugins/pychrysalide/helpers.h>
+
+
+#include "apihash.h"
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Ajoute le module 'plugins.apihashing' au module Python.      *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool add_apihashing_module_to_python_module(void)
+{
+    bool result;                            /* Bilan à retourner           */
+    PyObject *super;                        /* Module à compléter          */
+    PyObject *module;                       /* Sous-module mis en place    */
+
+#define PYCHRYSALIDE_PLUGINS_APIHASHING_DOC                  \
+    "apihashing is a module providing a few implementations" \
+    " of algorithms used to resolve API functions by hash."
+
+    static PyModuleDef py_chrysalide_apihashing_module = {
+
+        .m_base = PyModuleDef_HEAD_INIT,
+
+        .m_name = "pychrysalide.plugins.apihashing",
+        .m_doc = PYCHRYSALIDE_PLUGINS_APIHASHING_DOC,
+
+        .m_size = -1,
+
+    };
+
+    result = false;
+
+    super = get_access_to_python_module("pychrysalide.plugins");
+
+    module = build_python_module(super, &py_chrysalide_apihashing_module);
+
+    result = (module != NULL);
+
+    if (result) result = ensure_python_api_hash_modifier_is_registered();
+
+    assert(result);
+
+    return result;
+
+}
diff --git a/plugins/apihashing/python/module.h b/plugins/apihashing/python/module.h
new file mode 100644
index 0000000..fe628b9
--- /dev/null
+++ b/plugins/apihashing/python/module.h
@@ -0,0 +1,38 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * module.h - prototypes pour l'intégration du répertoire apihashing en tant que module
+ *
+ * Copyright (C) 2020 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef _PLUGINS_APIHASHING_PYTHON_MODULE_H
+#define _PLUGINS_APIHASHING_PYTHON_MODULE_H
+
+
+#include <stdbool.h>
+
+
+
+/* Ajoute le module 'plugins.apihashing' au module Python. */
+bool add_apihashing_module_to_python_module(void);
+
+
+
+#endif  /* _PLUGINS_APIHASHING_PYTHON_MODULE_H */
diff --git a/plugins/encodings/python/rost/base64.h b/plugins/encodings/python/rost/base64.h
index c4459e9..0ef0834 100644
--- a/plugins/encodings/python/rost/base64.h
+++ b/plugins/encodings/python/rost/base64.h
@@ -34,7 +34,7 @@
 /* Fournit un accès à une définition de type à diffuser. */
 PyTypeObject *get_python_scan_base64_modifier_type(void);
 
-/* Prend en charge l'objet 'pychrysalide....Base64Modifier'. */
+/* Prend en charge l'objet 'pychrysalide.analysis.scan.patterns.modifiers.Base64Modifier'. */
 bool ensure_python_scan_base64_modifier_is_registered(void);
 
 /* Tente de convertir en transformation par encodage en Base64. */
diff --git a/plugins/encodings/python/rost/module.c b/plugins/encodings/python/rost/module.c
index 6bd7187..4812bb5 100644
--- a/plugins/encodings/python/rost/module.c
+++ b/plugins/encodings/python/rost/module.c
@@ -25,6 +25,7 @@
 #include "module.h"
 
 
+#include <assert.h>
 #include <Python.h>
 
 
diff --git a/tests/analysis/scan/pyapi.py b/tests/analysis/scan/pyapi.py
index 2aaaeec..006c17a 100644
--- a/tests/analysis/scan/pyapi.py
+++ b/tests/analysis/scan/pyapi.py
@@ -104,6 +104,15 @@ class TestRostPythonAPI(ChrysalideTestCase):
         self.assertEqual(transformed[2], b'BQkM')
 
 
+        mod = find_token_modifiers_for_name('ror13')
+        self.assertIsNotNone(mod)
+
+        source = b'GetProcAddress'
+        transformed = mod.transform(source)
+
+        self.assertEqual(transformed[0], b'\xaa\xfc\x0d\x7c')
+
+
     def testBytePatternModifiersAPI(self):
         """Validate the API for pattern modifiers."""