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A Brief Analysis of ASP.NET Session Identifiers
From: Tim <tim-pentest () sentinelchicken org>
Date: Sat, 20 Dec 2008 12:25:18 -0800


Any of you ever looked closely at ASP.NET_SessionId cookies?  Ever
wondered why certain digits don't look so random?  Well I did, so I
spent some quality time with a debugger last weekend and figured out
just how those cookies are generated.

Nothing earth shattering was found, but there were some interesting
details that I though would be worth writing up:

If nothing else, hopefully it will save someone else the time I just
spent uncovering the algorithm.


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