Emulator - added simplified program emulation API via EmulatorHelper

GhidraDocs/GhidraClass/ExerciseFiles/Emulation/Source/deobExample.c

@@ -0,0 +1,100 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+int length(char *s) {
+	int len = 0;
+	while (*s++ != 0) {
+		++len;
+	}
+	return len;
+}
+
+const char data[] = {
+0xec,
+0xc3,
+0xd8,
+0xd9,
+0xde,
+0x8a,
+0xcf,
+0xc4,
+0xde,
+0xd8,
+0xd3,
+0x00,
+0xf9,
+0xcf,
+0xc9,
+0xc5,
+0xc4,
+0xce,
+0x8a,
+0xcf,
+0xc4,
+0xde,
+0xd8,
+0xd3,
+0x00,
+0xfe,
+0xc2,
+0xc3,
+0xd8,
+0xce,
+0x8a,
+0xcf,
+0xc4,
+0xde,
+0xd8,
+0xd3,
+0x00,
+0x00
+};
+
+char buffer[64];
+
+char * deobfuscate(char *src, char *dst, int len) {
+        char *ptr = dst;
+        for (int i = 0; i < len; i++) {
+            *ptr++ = *src++ ^ 0xAA;
+        }
+        *ptr = 0;
+        return dst;
+}
+
+void use_string(char * str, int index) {
+//	fprintf(stderr, "String[%d]: %s\n", index, str);
+}
+
+int main (int argc, char **argv) {
+    char *ptr = (char *)data;
+    int index = 0;
+    while (*ptr != 0) {
+        int len = length(ptr);
+        char *str = deobfuscate(ptr, buffer, len);
+	use_string(str, index++);
+	ptr += len + 1;
+    }
+    return 0;
+}
+
+#ifndef __x86_64
+
+
+int _start() {
+	char *argv[] = { "deobExample" };
+	return main(1, argv);
+}
+
+#endif