ophcrack

Ophcrack is a free rainbow-table based cracker for Windows passwords (though the tool itself runs on Linux, Windows, and Mac). Features include LM and NTLM hash cracking, a GUI, the ability to load hashes from encrypted SAM recovered from a Windows partition, and a Live CD version. Some tables are provided as a free download but larger ones have to be bought from Objectif Sécurité.

What is ophcrack?

Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a Graphical User Interface and runs on multiple platforms.

Features:

• » Runs on Windows, Linux/Unix, Mac OS X, ...
• » Cracks LM and NTLM hashes.
• » Free tables available for Windows XP and Vista/7.
• » Brute-force module for simple passwords.
• » Audit mode and CSV export.
• » Real-time graphs to analyze the passwords.
• » LiveCD available to simplify the cracking.
• » Dumps and loads hashes from encrypted SAM recovered from a Windows partition.
• » Free and open source software (GPL).
  
  Download Windows : Download
  
                      Source : Download
  Ophcrack XP LiveCD: cracks LM hashes (Windows XP and earlier) : Download
  md5sum: 2af5b6c23d455310542dba892791fa57
  Ophcrack Vista LiveCD: cracks NT hashes (Windows Vista and 7)    : Download
  md5sum: 79703fec9016e377abb7d8b047e8037b
  Ophcrack LiveCD: does not include any tables (if you already downloaded them) :Download
  md5sum: 721e8421442f1fe9d96af6b91ca7e3bd