encoder.py

encodes byte stream with 1byte xor key.

usage : python encode.py [hex string(e.g 416f2c3a552a....)]

import os, sys, struct

sh = sys.argv[1].decode('hex')

sh2=''

for i in range(0, len(sh)):

sh2 += chr(ord(sh[i]) ^ (0xff-i))        # key : ff - index.

print '\\x' + '\\x'.join(x.encode('hex') for x in sh2)