ohrwurm is a small and simple RTP fuzzer, it has been tested it on a small number of SIP phones, none of them withstood the fuzzing.
Features:
- reads SIP messages to get information of the RTP port numbers
- reading SIP can be omitted by providing the RTP port numbers, so that any RTP traffic can be fuzzed
- RTCP traffic can be suppressed to avoid that codecs learn about the “noisy line”
- special care is taken to break RTP handling itself
- the RTP payload is fuzzed with a constant BER
- the BER is configurable
- requires arpspoof from dsniff to do the MITM attack
- requires both phones to be in a switched LAN (GW operation only works partially)
You can download ohrwurm 0.1 here:
Or read more here.
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