How to reset Windows XP NT password from BackTrack 3

How to reset windows xp or NT password? You can download a version of Linux called Backtrack 3(BT3), basically it is a version of Slackware Linux that is built with all security tools. For the purpose of this experiment, you can download either the CD version or the USB memory stick version. The tool that you need to unlock XP password is called chntpw, and if you can find a version of BT3, then you can find it in the path
/pentest/password/chntpw

the windows password file can be found at

[mount point]/WINDOWS/system32/config/SAM

then you can goto the /WINDOWS/system32/config directory and type

/pentest/password/chntpw -u administrator SAM

you can clear the password of the administrator account.


Enjoy