Get the Whitepaper called English Shellcode. In this paper, they challenge the assumption that shellcode must conform to superficial and discernible representations. Specifically, they demonstrate a technique for automatically producing English Shellcode, transforming arbitrary shell-code into a representation that is superficially similar to English prose.
You can download it from the following link: https://packetstormsecurity.com/files/download/82878/ccs243-mason.pdf
Source: https://packetstormsecurity.com/files/82878/Whitepaper-Called-English-Shellcode.html