Ophcrack is a 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 GTK+ Graphical User Interface and runs on Windows, Mac OS X (Intel CPU) as well as on Linux.
There is also article and more screen shots at Lifehacker:
Extremely impressed at the ease and speed with which the Ophcrack Live CD cracked my Windows admin password when I tested it out last a few weeks ago, I thought it might be useful to throw together a quick guide detailing how to use this powerful little utility.
Crack a MS- Windows 7 / XP / Vista password with Ophcrack Live CD
Whether you need to recover the lost password to a Windows account, you're looking to ensure that your passwords are secure, or you're a super l33t h4x0r, the Ophcrack Live CD is a pretty useful tool.
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Ophcrack is an amazing program if you can get it to work properly. I understand that many of you are frustrated that you can’t use it to crack your computers. The truth is you’re going to need a better table. If the password you are attempting crack isn’t simple, then you’re out of luck. Ophcrack requires you to purchase their complex tables for a hefty price. Try looking on pirate bay and other sites for special tables.
ophcrack is not a good product
I cannot find where to go to resete the Windows Server 2003 Admin password. I have been going around for hours now.
Pleeeease heeeelp
its not tht hard 2 do
go to cmd in safe mode
type in net users
net user all
net user (name of user here)
and then pressspace and hold down shift and press 8
Hey I used the ophcrack for vista, booted the pc from cd and it did not find the password, it said password not found
Man whoever said to put 0 and 1 in the box is a genius. That solved my problem of getting the error message about the mnt.
Example: 01
i need help i cant download and my adimistrator lost it password what do i do?
i nedd help
i loaded it onto a windows 7 computer and it loaded and then said “abnormal Exit”…. HELP????
For some reason, Ophcrack doesn’t list the user account that I’m looking for. It just lists Guest, HelpAssistant, ASPNET, etc.
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