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Decrypt jenkins password hashes
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#!/usr/bin/env python3 | |
# original: https://raw.githubusercontent.com/tweksteen/jenkins-decrypt/master/decrypt.py | |
# requires: pycrypto | |
import re | |
import sys | |
import base64 | |
from hashlib import sha256 | |
from binascii import hexlify, unhexlify, Error as BAError | |
from Crypto.Cipher import AES | |
MAGIC = b'::::MAGIC::::' | |
def usage(): | |
print(sys.argv[0], "<master.key> <hudson.util.Secret>") | |
sys.exit(0) | |
def get_key(): | |
master_key = open(sys.argv[1], 'r').read().encode('utf-8') | |
hudson_secret_key = open(sys.argv[2], 'rb').read() | |
hashed_master_key = sha256(master_key).digest()[:16] | |
o = AES.new(hashed_master_key, AES.MODE_ECB) | |
x = o.decrypt(hudson_secret_key) | |
assert MAGIC in x | |
k = x[:-16] | |
return k[:16] | |
def decrypt(password_hash, key): | |
p = base64.decodestring(password_hash.encode('utf-8')) | |
o = AES.new(key, AES.MODE_ECB) | |
x = o.decrypt(p) | |
assert MAGIC in x | |
return re.split(MAGIC.decode('utf-8'), x.decode('utf-8'), 1)[0] | |
def main(): | |
if len(sys.argv) != 3: | |
usage() | |
key = get_key() | |
while True: | |
try: | |
password = input('Password-Hash: ') | |
if not password: | |
break | |
else: | |
print('Password:', decrypt(password, key)) | |
except (ValueError, BAError) as e: | |
print('Error:', e) | |
except (KeyboardInterrupt, EOFError): | |
print() | |
break | |
if __name__ == '__main__': | |
main() |
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