These are the presentation slides for the Hacking SIP Like A Boss presentation given at Athcon 2013.
You can download it from the following link: https://packetstormsecurity.com/files/download/121938/Hacking_SIP_Like_a_Boss-2.2.pdf
Source: https://packetstormsecurity.com/files/121938/Hacking-SIP-Like-A-Boss-Presentation-Slides.html