Hi list,
Since getting Sylvain's transceiver to work with my C118, I started to look at scapy and specifically the gsm-um code as another interesting tool in the fuzzer's arsenal. I see that Laurent Weber's personal website, http://0xbadcab1e.lu/scapy_gsm_um-howto.txt, where he apparently had posted some examples and tips on playing with his code, is no longer available.
Does anyone have a copy of those instructions? Has anyone tried running gsm-um with the TRX firmware? Any tips or pointers before I dive in?
Cheers,
Miguel
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But isn't it possible also to use the weber-code with the standard osmocombb-package,prior to the trx firmware? Since scapy was mentioned in some of the first talks about osmocombb with the only caveat that there is not a nice integration with scapy yet?
Also if you need the testcall functionality one possibly must use an earlier version of openbts.
// Erich
Thanks for the reply Erich.
I'm not really sure about that. I'm going to experiment a bit if I can find the time this week. I see the gsm-um python code mentions it is possible to send out the scapy packets using udp, tcp and unix domain sockets, so I imagine it should be fairly easy to integrate with openbts and osmocom, either using the trx firmware or the older "regular" layer1 firmware.
Anyone that has played around with this before have any tips?
Cheers
________________________________ From: Erich Dachleger edachleger@yahoo.com To: Miguel Rios miguelrios35@yahoo.com; "baseband-devel@lists.osmocom.org" baseband-devel@lists.osmocom.org Sent: Sunday, June 16, 2013 10:44 AM Subject: scapy gsm-um with trx firmware?
________________________________
But isn't it possible also to use the weber-code with the standard osmocombb-package,prior to the trx firmware? Since scapy was mentioned in some of the first talks about osmocombb with the only caveat that there is not a nice integration with scapy yet?
Also if you need the testcall functionality one possibly must use an earlier version of openbts.
// Erich
16.06.2013 17:22, Miguel Rios пишет:
Thanks for the reply Erich.
I'm not really sure about that. I'm going to experiment a bit if I can find the time this week. I see the gsm-um python code mentions it is possible to send out the scapy packets using udp, tcp and unix domain sockets, so I imagine it should be fairly easy to integrate with openbts and osmocom, either using the trx firmware or the older "regular" layer1 firmware.
Anyone that has played around with this before have any tips?
works for me using 'milenage' branch in https://github.com/zabbal/openbts-p2.8
I've ported testcall patches from previous version of openbts.
Thanks Max,
I'll take a look at that branch soon.
Offtopic: By the way, I'm looking forward to buying the um-TRX to play around with. Is it still due to start shipping the new batch in July? Does the standard um-trx work well with GSM or do we have to also purchase the clocktamer?
Cheers,
Miguel
________________________________ From: ☎ Max.Suraev@fairwaves.ru To: baseband-devel@lists.osmocom.org Sent: Monday, June 17, 2013 10:31 AM Subject: Re: scapy gsm-um with trx firmware?
16.06.2013 17:22, Miguel Rios пишет:
Thanks for the reply Erich.
I'm not really sure about that. I'm going to experiment a bit if I can find the time this week. I see the gsm-um python code mentions it is possible to send out the scapy packets using udp, tcp and unix domain sockets, so I imagine it should be fairly easy to integrate with openbts and osmocom, either using the trx firmware or the older "regular" layer1 firmware.
Anyone that has played around with this before have any tips?
works for me using 'milenage' branch in https://github.com/zabbal/openbts-p2.8
I've ported testcall patches from previous version of openbts.
Offtopic: By the way, I'm looking forward to buying the um-TRX to play around with. Is it still due to start shipping the new batch in July? Does the standard um-trx work well with GSM or do we have to also purchase the clocktamer?
The UmTRX comes standard with a high quality VCTXO (or optionally OCXO IIRC) based clock source and supports GPS calibration. No need for external clocking.
Cheers,
Sylvain
On Jun 17, 2013 8:47 PM, "Sylvain Munaut" 246tnt@gmail.com wrote:
Offtopic: By the way, I'm looking forward to buying the um-TRX to play around with. Is it still due to start shipping the new batch in July? Does the
standard
Yes, planned shipping by July.
um-trx work well with GSM or do we have to also purchase the clocktamer?
The UmTRX comes standard with a high quality VCTXO (or optionally OCXO IIRC) based clock source and supports GPS calibration. No need for external clocking.
Yep, correct. VCTCXO with GPS by default, OCXO for big batches per request. External clocking is not needed in both cases.
Please excuse typos. Written with a touchscreen keyboard.
-- Regards, Alexander Chemeris CEO/Founder Fairwaves LLC http://fairwaves.ru
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Alexander Chemeris -
Erich Dachleger -
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Sylvain Munaut -
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