Permutation Oriented Programming (formerly known as Exploit Next Generation) introduces a different and powerful approach to IDS/IPS subversion. It can be applied to almost all vulnerabilities and targets the vulnerability triggers. Slides and various code examples are provided.
You can download it from the following link: https://packetstormsecurity.com/files/download/103300/permutation-programming.tgz
Source: https://packetstormsecurity.com/files/103300/Permutation-Oriented-Programming.html