WinPassword

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WinPassword (formerly known as NT Password) is an application for NT/2000/XP/2003 system administrators for finding breaches in system security. WinPassword tries to decrypt plain-text passwords analyzing user password hashes. If it is possible to break a password within reasonable time, the password should be considered insecure. WinPassword can also be used to crack forgotten passwords of particular users. Please note that this program is for advanced users and system administrators with good understanding of the Windows security model. WinPassword uses both traditional recovery methods (Brute Force Attack, Dictionary Search) and the new Smart Table Recovery (TM) technique. Smart Table Recovery (TM) technique is based on special precomputed recovery tables (rainbow tables) and it's especially useful for cracking complex 7 character passwords containing punctuation marks and other non-alphanumeric characters.