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Showing posts from July, 2012

Bruteforcing SIP extensions with Metasploit

Hi, some time ago I published this post about VoIP information gathering with Metasploit. For a minimal pentesting process, a module capable of bruteforcing discovered extensions password is needed. So I have developed it, if you know SIPvicious suite this module provides sipcrack tool features. Based on available SIP related modules I implemented SIP Digest Authentication algorithm and Msf::Auxiliary::AuthBrute mixin does the magic with possible user/password combinations. This picture shows an example of use in which extension 100 password is discovered ( 100 ). Source code: UDP version TCP version In case you use the module outside a LAN is strongly recommended to add you external IP address (option "EXTIP"), trying to avoid SIP and NAT problems. Bye ;)