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SIPVicious PRO experimental now supports STIR/SHAKEN and 5 new tools

We just made two builds available to our SIPVicious PRO members. One is called the stable build, while the other is the experimental build. The v6.0.0-beta.5 stable build includes a large number of fixes, much better (or sane) defaults and full coverage of SRTP throughout the toolset. The experimental version is where the excitement is. Our members now have access to 5 new tools that we find useful in our work:…

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DEMO - An overview of the VoIP and RTC offensive security toolset, SIPVicious PRO

We pushed out a video that introduces the basics of SIPVicious PRO by demonstrating some of the attack tools and showing the building blocks for automating security testing of VoIP and WebRTC applications and infrastructure. What follows is a transcript of the video. Introduction Hello, I’m Sandro Gauci from Enable Security. In this video, I’d like to show you what we have been working on, SIPVicious PRO! Let’s start by introducing the tools.…

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SIPVicious PRO 6.0.0-beta.4 getting close to take-off!

This one’s a bit of a boring update for SIPVicious PRO. That’s because we’re getting to a stable place where flag names and values do not change too often. Which means, we’re getting out of beta rather soon! However, it is still a major update because we made a significant number of internal changes. For example, we standardized a number of flags to be the same across all tools. We discovered that we can minimize each tool’s flagset by making use of config flags such as --auth-config that allows you to configure behaviours specific to how SIPVicious handles authentication (e.…

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Sandro Gauci

Sandro Gauci, Enable Security

TADSummit Asia 2021 talk about SIPVicious Pro and the Demo Server

TADSummit is a great event where people from different backgrounds that are somehow involved in communications, contribute in various ways. I, personally, always look forward to see what’s coming up in the next TADSummit event. At the moment, TADSummit Asia presentations are currently being released on a daily basis on the main site. And last week, the presentation that I prepared was published! In the previous TADSummit, I had presented about why we need to bring an offensive approach to RTC security.…

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Alfred Farrugia

Alfred Farrugia, Enable Security

Bug discovery diaries: Abusing VoIPmonitor for Remote Code Execution

Executive summary (TL;DR) We fuzzed VoIPmonitor by using SIPVicious PRO and got a crash in the software’s live sniffer feature when it is switched on. We identified the cause of the crash by looking at the source code, which was a classic buffer overflow. Then we realized that was fully exploitable since the binaries distributed do not have any memory corruption protection. So we wrote exploit code using ROP gadgets to get remote code execution by just sending a SIP packet.…

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SIPVicious PRO 6.0.0-beta.2 takes STDIN and fixes various bugs

What we’re excited about in this minor update is the addition of a new feature to the SIP cracker in SIPVicious PRO. Basically, it now takes input from external tools through standard input. Why? Because it allows infinite ways of generating potential usernames, passwords and/or SIP extensions when making use of external tools such as the maskprocessor included in the well known password cracker, hashcat. Here’s an animation showing usage of the maskprocessor to generate passwords for the SIP online cracking tool:…

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Alfred Farrugia

Alfred Farrugia, Enable Security

Bug discovery diaries: uncovering sngrep overflow issues with blackbox fuzzing

Last updated on Jan 5, 2021 in , , ,

Executive summary (TL;DR) During OpenSIPIt, we crashed sngrep by mistake while briefly fuzzing OpenSIPS. Later on we setup a docker environment to reproduce the issue, identified the actual bugs and reported them upstream. If you want to learn the simple steps to do this, you actually have to read the rest of the post :-) sngrep crash during the live OpenSIPit event Last year we participated in OpenSIPIt’s interoperability testing event which was held between the 14th and 15th of September 2020.…

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SIPVicious PRO beta release contains SIP fuzzer and better automation

We just made SIPVicious PRO v6.0.0-beta.1 available to our beta testers. This latest release brings a new SIP fuzzer and enhancements for automation to your favourite RTC offensive security toolset. We have the following highlights with this release: New fuzzing tools - sip fuzz method. This used to be in a separate internal tool called gasoline (see our toolset page); this now been polished and has joined the SVPRO toolset; this has been used to identify vulnerabilities in Kamailio (advisory), sngrep (advisory 1 and 2) and other SIP servers.…

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Alfred Farrugia

Alfred Farrugia, Enable Security

How doing QA testing for SIPVicious PRO led to an Asterisk DoS

Published on Nov 10, 2020 in , , ,

Executive summary (TL;DR) While heavily testing SIPVicious PRO for bugs, we encountered an unexpected crash in Asterisk. We reported this to the Asterisk team, who recently issued a fix. If you’re a vendor, you too can beta test SIPVicious PRO! How the Asterisk crash was found We test our software as much as we can because, like any other software, ours contains bugs too! When it comes to SIPVicious PRO, one of our quality assurance tests is to run it against instances of Asterisk and Kamailio and check for expected results.…

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Sandro Gauci

Sandro Gauci, Enable Security

ClueCon Weekly with Sandro Gauci, demonstration of SIP Digest Leak

Published on Oct 16, 2020 in , ,

ClueCon weekly is a regular video by the people behind Freeswitch and Signalwire, hosted by the very friendly David Duffet. I had the pleasure of recording an interview and a presentation with David a few weeks back. If you would like a summary of what the video chat was about, scroll down to the points below. Otherwise, hope you enjoy the chat as much as I did! Summary Here’s an outline of what went on:…

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