GSM firmware hacking

Andy Green andy at openmoko.com
Mon Aug 11 17:29:17 CEST 2008


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Somebody in the thread at some point said:

| The chance to get caught is even higher.
| Operating on the GSM bands automatically means the basestations receive
| what you send.
| This also means they can (and do) easily recognize if there's something
| wrong.
| At this point the operator might inform the regulator (BNA in germany)
| who has the equipment to track you down.
|
| And of course GSM is sensitive - high bitrates at less then -100 dBm
| with complex access methods.

To avoid this sad fate one can buy or rent rather expensive (GBP5K +
options probably to buy) "base station" emulators you can connect to by
physical cable with no antenna, eg

http://www.testwall.com/product.html?pid=783&title=Rohde-and-Schwarz%20CTS55&no_cache=1

What you do in that closed system that you own end to end is entirely a
matter for you alone.

- -Andy
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