For some reasons, you may want or be obliged to crack a password. Or login into a system using someone else credentials.

Sometimes, that’s the only thing left to do to get things done…
In that case, I would recommend OPHCrack.  It’s a free software based on an open source project, under the GNU General Public License.

Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman’s original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds, as long as they are shorter than 14 characters.

It is very easy to use: download the ISO file containing the software and burn a CD-Rom out of it.

Then, boot the system you need to crack out of this CD-Rom. Just wait… It’s going to do the job by itself and provide with a list of all the user names and password of the system.

Very very impressive…

Get more info and support here at

Download the CD image from here