Whitepaper discussing how to make a backdoor with return oriented programming and ROPgadget. Written in French.
You can download it from the following link: https://packetstormsecurity.com/files/download/100431/backdoor-rop.txt
Source: https://packetstormsecurity.com/files/100431/How-To-Make-A-Backdoor-With-Return-Oriented-Programming.html