Wednesday, January 02, 2013
Crack windows passwords with GPU
You can still capture password hashes and challenge them. What has changed is the amount of computing power you need to do so. Researchers now have developed a GPU based password cracker which tries 350 billion guesses per second.
Such password policies are common in many enterprise settings. The same passwords protected by Microsoft's LM algorithm—which many organizations enable for compatibility with older Windows versions—will fall in just six minutes.
The Linux-based GPU cluster runs the Virtual OpenCL cluster platform, which allows the graphics cards to function as if they were running on a single desktop computer. ocl-Hashcat Plus, a freely available password-cracking suite optimized for GPU computing, runs on top, allowing the machine to tackle at least 44 other algorithms at near-unprecedented speeds. In addition to brute-force attacks, the cluster can bring that speed to cracks that use a variety of other techniques, including dictionary attacks containing millions of words. More information can be found at arstechnica.com