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How payloads (shellcodes) used in exploiting
From: jerome.athias at free.fr (Jerome Athias)
Date: Thu, 29 Mar 2007 11:33:10 +0200

Hi,

it is due to the fact of the Metasploit Framework uses kind of magic and 
hexa voodoo!...

After joking, yes the shellcode has to be sent to the target to having 
it running.
To avoid badchars and for ID/PS evasion reasons, the base code of the 
shellcode (called payload) will me modified by the Framework before to 
be sent to the target. (ie: XORed)
So yes it could be different every time.
A way to retrieve it in your packets is to attach a debugger to the 
target application/service and see what it receives, and then compare 
this with your capture.

Note that in the version 2 of the MSF, you can view the shellcodes's 
codes (:p) in
*\Metasploit\Framework2\home\framework\src\shellcode\

I hope it helps
/JA

Rawal, Rajesh a ?crit :
Hi,
 
I am using metasploit framework 3, exploiting windows and linux 
applications.
I have captured packets using ethereal, but I didn't find the payload 
(position) used during the exploittation.
 
For e.g.
 
Exploit used was "windows/smb/ms06_040_netapi" and used 
payload "windows/shell_bind_tcp" and it successfully exploited remote 
host and got command of remote host machine. Also taken packet capture 
during this process.
I m not able to find payload of "windows/shell_bind_tcp" in packet 
capture.
 
1. Can I know where this payload exist (where it comes during this 
sesion) in packet capture?
2. Does these payloads (shellcodes) differs in every new exploit attemts?
 
waiting for positive response
 
Regards
 
Rajesh Rawal
AMTS
*iPolicy Networks*
**NSEZ Noida | India
Tel. +91-120-2567001,xtn-1246
Cell +91-9899401874

www.ipolicynetworks.com <http://www.ipolicynetworks.com/>

 
 
 
 


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