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live parsing about iridium-toolkit HOT 3 CLOSED

alphapats avatar alphapats commented on September 24, 2024
live parsing

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Sec42 avatar Sec42 commented on September 24, 2024

Live parsing is not really the main focus of iridium-toolkit. The whole code is a work in progress & built in a way to be able to run again over old data after changes to the parser or reassembler are made.

That said, SMS are part of the LAPDm layer2 messages (IDA). There is reassembler -m gsmtap which will help you feed them live into a running wireshark instance. Getting things like SMS out of wireshark/tshark live should be possible, but is left as an exercise for the reader :-)

Voice doesn't really make sense live IMO. Playing it live over speaker won't work as soon as there's more than one call going on. And if you're just creating files, you can run that whenever you're ready to look at it. All in all, there is no code to facilitate that. You would also need to somewhat reliably detect when a call is ending.

Let us know if you write any code do any of that, though.

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alphapats avatar alphapats commented on September 24, 2024

one can parse the pcap file created by reassembler -m lap using following filters in tshark to get sms text:
tshark -r output.pcap -Y gsm_sms -T fields -e gsm_sms.tp-oa -e gsm_sms.scts.year -e gsm_sms.scts.month -e gsm_sms.scts.day -e gsm_sms.scts.hour -e gsm_sms.scts.minutes -e gsm_sms.scts.seconds -e gsm_sms.sms_text

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alphapats avatar alphapats commented on September 24, 2024

for voice, still facing difficulties to automate the voice capturing. need your assistance

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