On Tue, Apr 5, 2011 at 4:39 AM, Cristian Rougier <crist...@lainfo.com.mx>wrote:
> Hello, > > I'm looking for a way to do a software that can retreive the IMSI of > proximity devices > and later the MSISDN (phone number) associated. > > In a short i need to see the phone numbers of the proximity gsm devices. > > I need to know if anybody can help me on this, or say me about the right > way to start. > > I trust you have the co-operation of the GSM operator, or understand the privacy implications of not having it. An approach for mapping a number to a device on a specific cell is discussed in Karsten Nohl's talk[1]. Basically, you send empty messages in a particular pattern, and watch as the phone receives (and discards) them. This doesn't make it easy to do on a large scale. >From a hardware perspective, while you may get some success with a USRP, you're probably better off looking at the Osmocombb project. Mark [1] http://events.ccc.de/congress/2010/Fahrplan/attachments/1783_101228.27C3.GSM-Sniffing.Nohl_Munaut.pdf
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