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Linux Password Cracker "Hash Crack"

Brian Leschke 2016

Overview

This python program can be used to detect hashing algorithms of specified users in the /etc/shadow file and attempt to crack those hashes. The attack vector is a dictionary attack and uses the dictionary file "phpbb.txt" which is found at https://wiki.skullsecurity.org/Passwords

Prerequisities

You will need:

  1. Any modern version/flavor of Linux/Unix
  2. System privileges to access /etc/shadow
  3. Python 2.7 (unknown compatibility with higher versions)

Usage

In order to use this code you will have to download and unpackage this repository listed below:

    https://github.com/Bleschke/LinuxPasswordCracker.git

All files need to placed in the same file location/folder in order for the program to run (unless you specify the file location).

To run the program, type the following in a terminal window under the directory in which the files were placed:

    sudo python assignment2.py

Changing dictionary files and shadow locations

To change the location of the shadow file, you will need to edit the "assignment2.py" file with a text editor of your choosing. You will need to edit these two variables located towards the top of the file to match your dictionary file and shadow file locations.

    PASSWD_DICT = 'phpbb.txt';   # path to password dictionary

    SHADOW_LOC = '/etc/shadow';  # path to shadow file