Get the Whitepaper called Exploitation With WriteProcessMemory() – Yet Another DEP Trick.
You can download it from the following link: https://packetstormsecurity.com/files/download/87883/Windows-DEP-WPM.txt
Source: https://packetstormsecurity.com/files/87883/Exploitation-With-WriteProcessMemory-Yet-Another-DEP-Trick.html