#DIAGNOSTIC VMC CENON HOW TO#
#DIAGNOSTIC VMC CENON REGISTRATION#

On the right, we see the dialed number manipulation. We just want to match anything that they dial and try to connect this call. I know there’s some overlap here but you get the idea. The callers were trying to throw in something like a trunk access code assuming that they had to dial something prior to calling internationally. On the Left is the Outbound route Dial Pattern table.Īfter some issues matching all the fubar numbers these people were trying to dial, I had to tweak mine a bit and keep adding. First thing is to ensure your Outbound Route included all digits that someone might want to reach. Other than building the “bait extensions” on the honeypot and having a real extension to call, only two things need set up. 110 rings and if answered, call is established with random guy on the internet that you can say “hi” to.Real PBX receives call for 110 over the IAX trunk and rings extension 110.IAX trunk translates dialed digits to 110 and sends it out trunk.Call matches dial pattern associated with IAX trunk and is passed to it.Caller can then dial whatever number they want from 101.No 401 Authentication failed message is sent

#DIAGNOSTIC VMC CENON REGISTRATION#

Registration attempt against 100, 101, 1001 etc.

The caller has no idea that the number has been translated, and I don’t have to worry about them some how getting out through my real SIP trunk which only the real PBX has access to.

Any calls over the IAX trunk will go to extension 110 where they can be answered. The dirty call is then translated to 110 before it leaves the bait server, that’s it. No flags are going off in the script saying, “this is way too easy.” Whats actually happening though is that if a call is made from any of my bait extensions, the call is sent out my IAX trunk which connects my two PBX’s. Now all this considered, if I was poking around the web and I saw a PBX on port 5060 and extensions like 100 or 101 without authentication I’d assume, “IT’S A TARP!” but what’s really doing the work here? It’s not a guy like me sitting at a PC, it’s an automated script like SIPVICIOUS. My real PBX does not use the default 5060 for SIP registration, so I was able to use that for my bait server.

#DIAGNOSTIC VMC CENON HOW TO#

This post is just a quick overview of how to set up an easy honeypot that allows registration to any extension.

I’ve been seeing a lot of “Friendly-Scanner” as well. Now sipvicious is not the only SIP hacking automation tool.

Did anyone else see the new sipvicious logo? Pretty cool upgrade.

Diagnostic vmc cenon