Get the Whitepaper called Antivirus / Firewall Evasion Techniques : Evolution of Download Deploy Shellcode.
You can download it from the following link: https://packetstormsecurity.com/files/download/98020/anti-evasion.pdf
Source: https://packetstormsecurity.com/files/98020/Antivirus-Firewall-Evasion-Techniques-Evolution-Of-Download-Deploy-Shellcode.html