SIP library for Metasploit is developed to help SIP Penetration Tests. It provides authentication feature that helps to create simple tests. It includes 5 different modules with authentication support: options tester, brute forcer, enumerator, invite tester and registration tester. All attacks could perform before and after authentication to fuzz SIP services and value added services.
You can download it from the following link: https://packetstormsecurity.com/files/download/120053/sipmodules.zip
Source: https://packetstormsecurity.com/files/120053/Metasploit-SIP-Penetration-Testing-Modules.html