Ethereal-dev: Re: [Ethereal-dev] AOL Messenger Protocol

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From: Ian Schorr <[email protected]>
Date: Fri, 23 Jul 2004 11:11:20 -0400
Wouldn't it be better to ask folks working on the GAIM project or another project that are also trying to reverse-engineer the AIM protocol?

On Jul 23, 2004, at 2:48 AM, Ashutosh Naik wrote:

Hi guys,

I am just trying to reverse engineer the AIM protocol.
I am using AIM Instant MEssenger Version 5.5.2599.l

Whats going wrong is that whenever I change a part of
the packet( The payload IP address in this case)..
(This appears way after the FNAC ID, FNAC flags and
the screen name)... I get an immediate disconnection
from the Aol server..

I suspect that there is an internal checksum that is
getting calculated. And I also suspect that this in in
the last 2 bytes.. Has anybody faced with a similar
problem? Or has any pointers to go ahead on this ?