cryptomachine02.py

#!/usr/bin/python

import sys, binascii, base64, string, random


flag = sys.argv[1]
print(flag)

def toHex(m):
    return binascii.hexlify(m)



def toBase64(m):
    return base64.b64encode(m)

def fromBase64(m):
    return base64.b64decode(m)

def rot13(m):
    t = string.maketrans(
        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz:",
        "NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm#")
    return string.translate(m,t)

def fromRot13(m):
    t = string.maketrans(
        "NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm#",
        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz:")
    return string.translate(m,t)

def xOR0x42(m):
    return toHex(''.join(chr(ord(c) ^ 0x42) for c in m))

def fromXOR0x42(m):
    return toHex(''.join(chr(c ^ 0x42) for c in binascii.unhexlify(m)))

def encrypt(s):
    functions = [xOR0x42, toBase64, rot13]
    # for i in range(random.randint(8,14)):  # egal wie oft:D
    a = random.randint(1,len(s)/2)
    b = random.randint(a+1,len(s)-1)
	tmp = [s[0:a],s[a:b],s[b:]]  # mach 3 strings in einer liste
	for j in range(3):
	    random0bis2 = random.randint(0,2)
	    tmp[j] = str(random0bis2) + functions[random0bis2](tmp[j])
	out = ':'.join(tmp)  # string1:string2:string3 (jeweils random mit einer function vercryptet)
    return out


def decrypt(s):
    fromFunctions = [fromXOR0x42, fromBase64, fromRot13]
    out=''
    strings = s.split(':')
	for j in range(3):
      currentString = string[j]
      currentDecoded=fromFunctions[currentString[0]](currentString[1:])
      out = out + currentDecoded
   return(out)





if __name__ == "__main__":
    print(decrypt(flag))