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

[Ian Schorr <ethereal@xxxxxxxxxxxxx>]

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?

Ian

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 ?
>
> Regards
> Ashutosh