chntpw

Forensics Password Cracking

chntpw is an offline NT password and registry editor. It can be used to blank or reset passwords on Windows NT/2000/XP/2003 machines, as well as manipulate the registry. It is provided primarily as a boot CD image, but can also be installed on a permanent Linux system.

http://home.eunet.no/pnordahl/ntpasswd/

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