full-disclosure - stuxnet DATA decoder

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Date: Fri, 10 Sep 2010 23:01:47 +0430
From: Mohammad Hosein <mhtajik@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: stuxnet DATA decoder

i have a couple of network intercepts from a large WAN that i am tasked to
monitored . they show Stuxnet infections . i have extracted the DATA that
stuxnet sends to C&C , the ones that are all start with : 66a96e28
we know that this Data sent over http is encrypted ( XOR ) with a 31-byte
Key . is there a decoder available somewhere ? if not , is there more
detailed document on this other than Symentec's so i can develop
a brute-forcer based on the knowledge of what info is located at which point
of this data stream ? i think a simple known plain text style brute forcer
can do this , i wanted to know if anybody did that before ?
Regards

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