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SIM Man In The Middle I had in the past several time to sniff the traffic between a SIM card and a phone: In NFC applications, SIMs are updated OTA (Over The AIr) with the CAT_TP protocol. It was necessary to inspect the traffic Analyze the timing between the air traffic and the... Read More →

UMA / GAN UMA = Unlicensed Mobile Access GAN = Generic Access Network ts 43.318 and 44.318 Wikipedia says: Generic Access Network or GAN is a telecommunication system that extends mobile voice, data and IP Multimedia Subsystem/Session Initiation Protocol (IMS/SIP) applications... Read More →

Femtocell Ubiquisys v2 Ubiquisys G3 Here is a look of the PCB In fact, it’s 2 PCB, one module from Ubiquisys connected with a B2B (board to board) connector to the NEC platform that is there for powering, ethernet, usb, at24 Eeprom. Some info about the cpu, before Broadcom... Read More →

These are important links to know when you’re going to enter the telecom world for security assessment.   Ericsson data http://en.wikipedia.org/wiki/PLEX_(programming_language) http://en.wikipedia.org/wiki/AXE_telephone_exchange   Billing... Read More →