Re:Skype protocol reverse engineered, source available
by jcr on Thursday June 02, 2011 @10:58AM
(#2612222)
Yes, but the Hex-Rays decompiler is not. I can't touch the files, so I can't tell you what version was used, but in the comments here, there is a claim that the supposed source code is Hex-Rays output.
http://www.hex-rays.com/idapro/idadown.htm