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Stamp Out Hash Corruption, Crack All The Things

Type
Paper
Tags
cracking
Authors
Jonathan Claudius, Ryan Reynolds
Event
Black Hat USA 2012
Indexed on
Jun 23, 2014
URL
https://media.blackhat.com/bh-us-12/Briefings/Reynolds/BH_US_12_Reynods_Stamp_Out_Hash_WP.pdf
File name
BH_US_12_Reynods_Stamp_Out_Hash_WP.pdf
File size
316.5 KB
MD5
000cc85b234a302f17d038b78221c1c9
SHA1
7d2dadd5827e9a7bc18a25f692de5f051369f9fb

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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