++=============++
|| MD5 cracker ||
++=============++

Disclaimer
==========
How you decide to use this application is up to you and I will take no reponsibility for
your actions.

Description:
============

This tool can be used for cracking raw-MD5 hashes via dictionary or brute-force attack.
You ask wtf is raw-MD5? Raw-MD5 is MD5 hash with no salt.

Motivation:
===========

Why just another MD5 cracker? Reason is simple. I use MD5 cracker rarely, but when I decide
to use some utility I demand its maximum speed. The fastest (not only) MD5 cracker I know is
john (the ripper). This utility is ultra fast but I wanted utility that is yet more effective.
So I deciced to code my own utility to be faster than mighy john. Oh, how naive I was...

Comparsion with john:
=====================

Testing hash file contained two hashes, testing wordlist had about 60 000 words but only one - the
last one - was real password for root user. My tool was compiled with these flags:
-O3
-march=core2
-mtune=core2
There is output of comparsion:

$ time john --format=raw-MD5 --wordlist=words3.txt hash.txt
Loaded 2 password hashes with no different salts (Raw MD5 [raw-md5])
admin            (root)
guesses: 1  time: 0:00:00:00 100%  c/s: 564536  trying:

real    0m0.114s
user    0m0.077s
sys     0m0.007s
$ time ./md5crack -f hash.txt -w words3.txt
root:admin

real    0m0.956s
user    0m0.750s
sys     0m0.017s

As you can see john is almost 9x faster than my lousy tool. Respect to skilled john programmers...

Compilation
===========
Just use attached Makefile. Program was tested on Arch Linux (kernel 2.6.28) with GCC 4.3.3.

Usage:
======
Program has several arguments:

md5crack -f hashFile [-w wordlist] [-d] [-h]

-f
This option specifies file with hashes. File have to be in this format:
username:raw-md5hash
username2:raw-md5hash2
...

-w
This option specifies wordlist. If omitted stdin is used for reading words.

-d
If this optin is used, program will print debug information to stdout.

-h
This option prints help.

Example of usage:
=================

$ time ./md5crack -f hash.txt -w words3.txt
root:admin
pepa:wtf

License:
========
This heap of bytes is released under GNU GPL license

Author:
=======
Stoyan, 2009