Skype 5.5 decrypted for reverse engineering

On March 25, the decrypted binary file Skype v. 5.5. Now it is possible to run Skype in the debugger, which could not be done before, since the original version was heavily obfuscated and had protection against debugging. The goal of the project is to create an open source Skype.

A message about this appeared on the blog of Efim Bushmanov, who a year ago decrypted the Skype protocol version 1.x / 3.x / 4.x and published a working version of the program.

A post on his blog:
skype-open-source.blogspot.com/2012/03/skype55-deobfuscated-released.html

Download link (the archive contains the Skype binary file and the IDA server database file): github.com/downloads/skypeopensource/ skypeopensource / skype55.zip

An interesting discussion on this topic:news.ycombinator.com/item?id=3753155