Ophcrack is an open source (GPL licensed) program that cracks Windows passwords by using LM hashes through rainbow tables. The program includes the ability to import the hashes from a variety of formats, including dumping directly from the SAM files of Windows. It is claimed that these tables can crack 99.9% of alphanumeric passwords of up to 14 characters in usually a few minutes.Rainbow tables for LM hashes of alphanumeric passwords are provided for free by the developers. Larger rainbow tables (for LM hashes of passwords with all printable characters, including symbols and space) are available for purchase from Objectif Sécurité. There is also a Live CD version which automates the retrieval, decryption, and cracking of passwords from a Windows system.
Step 1: Download ophcrack (.iso) from ophcrack. Download the live cd, not the exe.
Step 2: Download UNetbootin from http://unetbootin.sourceforge.net/
UNetbootin (Universal Netboot Installer) is a cross-platform utility that can create Live USB systems and can load a variety of system utilities or install various Linux distributions and other operating systems without a CD.
Step 3: Insert the USB flash drive from which you will boot the live OS.
Run UNetbootin, select the 'disk image' radio button and browse to the .iso file.
Select the drive name for the USB drive and click OK.
OR alternatively
You can also use a CD for this purpose. To boot from CD, you do not need Unetbootin. Just burn the .iso image to the CD.
Step 4: Reboot the system. Press F10 at startup to select the appropriate boot drive or enter BIOS by pressing 'del' and change the boot sequence. If you are stuck up here, please help yourself or wait for us until we post on it.
Step 5: Follow the simple instructions and within seconds it will crack the passwords of all the accounts on the system.
Now if you wish to crack the password of any Windows system, plug in the USB drive or insert the CD and boot from the drive.
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