Running your own GSM stack on a phone
- Type
- Video
- Tags
- GSM, phone
- Authors
- Harald Welte, Steve Markgraf
- Event
- Chaos Communication Congress 27th (27C3) 2010
- Indexed on
- Mar 27, 2013
- URL
- http://mirror.fem-net.de/CCC/27C3/mp4-h264-HQ/27c3-3952-en-running_your_own_gsm_stack_on_a_phone_osmocombb.mp4
- File name
- 27c3-3952-en-running_your_own_gsm_stack_on_a_phone_osmocombb.mp4
- File size
- 402.6 MB
- MD5
- dcc01aac5818b673ebd74fbf48bb697f
- SHA1
- 4110cca22b3b72e298a7bebf3a7cbfca97968325
In recent years, we have seen several Free Software projects implementing the network side of the GSM protocol. In 2010, OsmocomBB was started to create a free software implementation of the telephone-side. The OsmocomBB project is a Free Software implementation of the GSM protocol stack running on a mobile phone. For decades, the cellular industry comprised by cellphone chipset makers and network operators keep their hardware and system-level software as well as GSM protocol stack implementations closed. As a result, it was never possible to send arbitrary data at the lower levels of the GSM protocol stack. Existing phones only allow application-level data to be specified, such as SMS messages, IP over GPRS or circuit-switched data (CSD). Using OsmocomBB, the security researcher finally has a tool equivalent to an Ethernet card in the TCP/IP protocol world: A simple transceiver that will send arbitrary protocol messages to a GSM network.
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