Skype security
June 22nd, 2006 by David EndlerRECON (Reverse Engineering Conference) was recently held from June 16-18 in Montreal. One of the presentations involved some in-depth Skype reverse engineering and analysis. The slides for the presentation are available in pdf format for part1 and part2. Among other things, the talk covered Skype’s crypto scheme, easter eggs, and general traffic analysis. Worth a read.
July 20th, 2006 at 11:19 am
[…] I recently installed BT Communicator, which is British Telecom’s answer to Skype. Like Skype it allows free calls (PC to PC) and offers the capability to break out onto the PSTN to call anyone anywhere, for a fee. Being naturally curious, I fired up Wireshark and captured some of the activity on the line, and I was delighted to discover that it’s using our old friends SIP and RTP to signal and carry the calls. In contrast, if you capture Skype traffic, you can’t figure out what’s happening unless you put an awful lot of research into it. […]