Provided a way to look for ROP gadgets in binary code.

git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@533 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a

1 files changed, 76 insertions, 0 deletions

diff --git a/plugins/ropgadgets/helper_arm.c b/plugins/ropgadgets/helper_arm.c
new file mode 100644
index 0000000..7288399
--- /dev/null
+++ b/plugins/ropgadgets/helper_arm.c
@@ -0,0 +1,76 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * helper_arm.c - prise en compte des spécifités ARM pour la recherche de gadgets
+ *
+ * Copyright (C) 2015 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  OpenIDA 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.
+ *
+ *  OpenIDA 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 <malloc.h>
+
+
+#include <arch/arm/v7/context.h>
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : proc  = processeur lié à l'architecture visée.               *
+*                names = noms attribués aux différents contextes.             *
+*                count = nombre de gadgets trouvés. [OUT]                     *
+*                                                                             *
+*  Description : Etablit une liste des contextes utiles à la recherche.       *
+*                                                                             *
+*  Retour      : Liste de contextes mis en place.                             *
+*                                                                             *
+*  Remarques   : Toues les tableaux créés sont à libérer après usage.         *
+*                                                                             *
+******************************************************************************/
+
+GProcContext **get_rop_contexts_for_arm(const GArchProcessor *proc, char ***names, size_t *count)
+{
+    GProcContext **result;                  /* Contextes à retourner       */
+
+    result = (GProcContext **)calloc(2, sizeof(GProcContext *));
+
+    (*names) = (char **)calloc(2, sizeof(char *));
+
+    *count = 2;
+
+    /* Thumb */
+
+    result[0] = g_arch_processor_get_context(proc);
+
+    g_armv7_context_define_encoding(G_ARMV7_CONTEXT(result[0]), 0, AV7IS_THUMB);
+
+    (*names)[0] = "Thumb";
+
+    /* ARMM */
+
+    result[1] = g_arch_processor_get_context(proc);
+
+    g_armv7_context_define_encoding(G_ARMV7_CONTEXT(result[1]), 0, AV7IS_ARM);
+
+    (*names)[1] = "ARM";
+
+    return result;
+
+}