Codetective is an analysis tool to determine the crypto/encoding algorithm used according to traces of its representation. It can be used as a standalone version or as a volatility plugin for memory analysis. Written in Python.
You can download it from the following link: https://packetstormsecurity.com/files/download/128191/Codetective-0.8.tar.bz2
Source: https://packetstormsecurity.com/files/128191/Codetective-0.8.html