Re: SessionId Prediction - Classic ASP - Tool?

[Stefano Di Paola <stefano.dipaola () wisec it>]

Hi Jay,

Il giorno ven, 22/02/2008 alle 11.36 -0500, Jay ha scritto:
> How is it known that 706616434  equates to ASPSESSIONIDGQQGQGCS=JHMBOBKCBINEHLPKJHOPABBE?

have a look at http://www.cgisecurity.com/lib/SessionIDs.pdf
"..
IIS ASP SessionID
Session ID values are 32-bit long integers.
Each time the Web server is restarted, a random session ID starting
value is selected.
For each new ASP session that is created, the session ID value is
incremented.
The 32-bit session ID is mixed with random data and encrypted to
generate a 16character cookie string. Later, when a cookie is received,
the session ID is decrypted from the 16-character cookie string.
The encryption key is randomly selected each time the Web server is
restarted.
.."

Cheers,
Stefano
-- 
...oOOo...oOOo....
Stefano Di Paola
Software & Security Engineer

Owasp Italy R&D Director

Web: www.wisec.it
..................


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