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Fabio Pietrosanti (naif) lists at infosecurity.chOn 09/01/11 14.55, Sylvain Munaut wrote: > Sure: > Read the specs for USSD, implement them and submit the patch :) A long time ago when i was young and under 18 years old, made a small USSD scanner by scripting modem interface to find out undocumented USSD codes in operator's networks. Found a lot of USSD codes giving "Syntax error" or "APPLICATION NOT REGISTERED" or "Timeout" . I always desired to have an USSD scanner and USSD parameter brute forcer running directly inside a phone! Another cool protocol like USSD is the UUS (User to User Signaling) http://www.turkcell.com.tr/c/oth/terminalpdf/23087-800.pdf . For sure it's not provided on mobile handsets, but who know, maybe some networks have it by default allowed and two GSM subscriber could exchange data for free :-) Fabio