added ROPgadget.py

lecture-demos/ropgadget/ropgadget.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+PATH_TO_ROPGADGET=ROPgadget/ROPgadget.py
+
+# INSTALLATION
+#
+# Requires to install ROPgadget before:
+#   https://github.com/JonathanSalwan/ROPgadget
+# Alternatively, on Debian systems:
+#   apt install python3-ropgadget
+
+# USAGE
+#
+# libc is typically a great way to start searching for ROP gadgets, as
+# it's linked to typical processes. To find the exact libc path on your
+# system, you can use ldd; e.g.,
+#   ldd /bin/sh
+# reveals which libc version (and file) your shell linked against.
+
+# The following command will 
+${PATH_TO_ROPGADGET} --binary /lib/x86_64-linux-gnu/libc.so.6 --all