password_cracker.py

from __future__ import print_function

from sys import platform as _platform

# Script Name	: password_cracker.py
# Author		: Craig Richards
# Created		: 20 May 2013
# Last Modified	:
# Version		: 1.0
# Modifications	:
# Description	: Old school password cracker using python

# Check the current operating system to import the correct version of crypt
if _platform in ["linux", "linux2", "darwin"]:  # darwin is _platform name for Mac OS X
    import crypt  # Import the module
elif _platform == "win32":
    # Windows
    try:
        import fcrypt  # Try importing the fcrypt module
    except ImportError:
        print("Please install fcrypt if you are on Windows")


def testPass(cryptPass):  # Start the function
    salt = cryptPass[0:2]
    dictFile = open("dictionary.txt", "r")  # Open the dictionary file
    for word in dictFile.readlines():  # Scan through the file
        word = word.strip("\n")
        cryptWord = crypt.crypt(word, salt)  # Check for password in the file
        if cryptWord == cryptPass:
            print("[+] Found Password: " + word + "\n")
            return
    print("[-] Password Not Found.\n")
    return


def main():
    passFile = open("passwords.txt")  # Open the password file
    for line in passFile.readlines():  # Read through the file
        if ":" in line:
            user = line.split(":")[0]
            cryptPass = line.split(":")[1].strip(" ")  # Prepare the user name etc
            print("[*] Cracking Password For: " + user)
            testPass(cryptPass)  # Call it to crack the users password


if __name__ == "__main__":
    main()