Re: Skype protocol dissector

[Tyson Key <tyson.key () gmail com>]

Hi Matthias,

I'll admit that project sounds pretty cool - and I don't want to discourage
you from working on it; but I suspect that implementing that sort of
functionality in Wireshark might open a giant can of worms, legally.
(Especially since MS now own Skype's developers). ;)

Anyway, for getting started with writing dissectors, I'd recommend looking
at the documentation in http://anonsvn.wireshark.org/viewvc/trunk/doc/
(especially
"README.developer"), and reading the source code of existing dissectors.
When working on new dissectors, I tend to take one of my existing ones, and
modify it accordingly, in order to meet the needs of the new protocol in
question.

All dissectors are written against a "lowest common denominator" variant of
C (C89? C99?), and the EPAN APIs, to ensure portability, and consistency.

I hope that helps,

Tyson.

2012/8/9 Matthias Bock <mail () matthiasbock net>

> Hi everybody,
>
> there is a project at GitHub,
> uncovering the protocol structure of Skype.
> Currently only UDP is documented (there is also
> a TCP component somehow).
>
> https://github.com/matthiasbock/OpenSkype/wiki/Skype's-UDP-Format
>
> Documentation is not completed, but quite far
> and dissecting (and decrypting) pcap captures
> using Python on the console already works.
>
> The "next step" would be to implement a Wireshark
> dissector for "SkypeUDP".
>
> I have no idea, how to do this ...
> Anybody here who would like to help me? ;-)
>
> Cheers, Matthias
>
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