Cracking MD5, phpBB, MySQL and SHA1 passwords with Hashcat on Kali Linux

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Hashcat or cudaHashcat is the self-proclaimed world’s fastest CPU-based password recovery tool. Versions are available for Linux, OSX, and Windows and can come in CPU-based or GPU-based variants. Hashcat or cudaHashcat currently supports a large range of hashing algorithms, including: Microsoft LM Hashes, MD4, MD5, SHA-family, Unix Crypt formats, MySQL, Cisco PIX, and many others.

Hashcat or cudaHashcat comes in two main variants:

1. Hashcat – A CPU-based password recovery tool
2. oclHashcat or cudaHashcat – A GPU-accelerated tool

Many of the algorithms supported by Hashcat or cudaHashcat can be cracked in a shorter time by using the well-documented GPU-acceleration leveraged in oclHashcat or cudaHashcat (such as MD5, SHA1, and others). However, not all algorithms can be accelerated by leveraging GPUs.
Hashcat or cudaHashcat is available for Linux, OSX and Windows. oclHashcat or cudaHashcat is only available for Linux and Windows due to improper implementations in OpenCL on OSX.

My Setup

My setup is simple. I have a NVIDIA GTX 210 Graphics card in my machine running Kali Linux 1.0.6 and will use rockyou dictionary for this whole exercise. In this post, I will show How to crack few of the most common hashes

1. MD5
2. MD5 – phpBB
3. MySQL and
4. SHA1

I will use 2 commands for every hash, hashcat and then cudahashcat. Because I am using a NVIDIA GPU, I get to use cudaHashcat. If you’re using AMD GPU, then I guess you’ll be using oclHashcat. Correct me if I am wrong here!
Before you enable GPU Cracking, I’ve spent last few months writing guides on how to enable those features in Kali Linux.

NVIDIA Users:

1. Install proprietary NVIDIA driver on Kali Linux – NVIDIA Accelerated Linux Graphics Driver
2. Install NVIDIA driver kernel Module CUDA and Pyrit on Kali Linux – CUDA, Pyrit and Cpyrit-cuda

AMD Users:

1. Install AMD ATI proprietary fglrx driver in Kali Linux 1.0.6
2. Install AMD APP SDK in Kali Linux
3. Install Pyrit in Kali Linux
4. Install CAL++ in Kali Linux

AMD is currently much faster in terms of GPU cracking, but then again it really depends on your card.
You can generate more hashes or collect them and attempt to crack them. Becuase I am using a dictionary, (it’s just 135MB), I am limited to selection number of passwords. The bigger your dictionary is, the more you’ll have success cracking an unknown hash. There are other ways to cracking them without using Dictionary (such as RainBow Tables etc.). I will try to cover and explain as much I can. Advanced users, I’m sure you already know these, so I would appreciate constructive comments. As always, read the manual and help file before you ask for help. Most of the things are covered in manuals and wiki available in www.hashcat.net.
A big thanks goes to the Hashcat or cudaHashcat Dev team, they are the ones who created and maintained this so well. Cudos!.

Getting hashes:

First of all, we need to get our hashes. You can download hash generator applications, but there’s online sites that will allow you to create them. I will use InsidePro who kindly created a page that allows you create hashes on the fly and it’s publicly available. Visit them and feel free to browse their website to understand more about hashes.
The password I am using is simple: abc123


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