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Stamp Out Hash Corruption, Crack All The Things

Type
Slides
Tags
cracking
Authors
Jonathan Claudius, Ryan Reynolds
Event
Black Hat USA 2012
Indexed on
Jun 17, 2014
URL
https://media.blackhat.com/bh-us-12/Briefings/Reynolds/BH_US_12_Reynods_Stamp_Out_Hash_Slides.pdf
File name
BH_US_12_Reynods_Stamp_Out_Hash_Slides.pdf
File size
4.3 MB
MD5
dc78333354a0282f7683ca66f8f945cb
SHA1
83cea85c9ed8bca3cf7aec63bfcc9c4f5dd37d77

The precursor to cracking any password is getting the right hash. In this talk we are going to cover how we discovered that Cain and Able, Creddump, Metasploit and other hash extraction tools regularly yield corrupt hashes that cannot be cracked. We will take a deep dive into password extraction mechanics, the birth of a viral logic flaw that started it all and how to prevent corrupt hashes. At the conclusion of this talk we will release patches that prevent hash corruption in these tools that many security professionals use every day

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