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Ophcrack

From MRL Wiki

Ophcrack is a Windows password cracker based on the faster time-memory trade-off using Rainbow Tables. Ophcrack was released by a Swiss company called Objectif Sécurité. There are both command-line and GUI versions of the tool. Ophcrack runs on Windows, Mac OS X (Intel CPU) as well as on Linux.

Contents

[edit] Features

Ophcrack is capable of cracking the following hash types:

Ophcrack has several ways of importing password hashes:

[[Image:File:Ophcrack.png]]

[edit] bkhive2

Ophcrack comes with an interesting utility tool called bkhive2 which is capable of extracting Syskey bootkey from the system hive file thus defeating the additional encryption layer for the SAM file.

[edit] Live CD

The Ophcrack LiveCD is a bootable Linux CD-ROM containing ophcrack and a set of tables (SSTIC04-10k). It allows for testing the strength of passwords on a Windows machine without having to install anything on it. Just put it into the CD-ROM drive, reboot and it will try to find a Windows partition, extract its SAM and start auditing the passwords automatically. All partitions will be mounted in read-only mode thus no modifications will be written to the windows partition itself. Unfortunately due to the limited space available on cd, only LM hashes can be cracked.

[edit] Rainbow Tables

Objectif Sécurité, the maker of Ophcrack, made available several rainbow table sets online:

[edit] Videos

[edit] See Also

[edit] External Links

Retrieved from "http://midnightresearch.com/wiki/index.php/Ophcrack"

This page has been accessed 10,609 times. This page was last modified on 23 October 2009, at 12:26.


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