FreeCalypso > hg > freecalypso-tools
view rvinterf/doc/tfc139.usage @ 882:fd4c9bc7835d
fc-imy2pwt program written, compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 03 Apr 2022 03:30:27 +0000 |
parents | e7502631a0f9 |
children |
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The tfc139 hack-utility (see ../../doc/Compal-unlock) is based on the rvinterf/rvtdump skeleton, and it needs to be invoked as follows: tfc139 [options] /dev/ttyXXX In the well-tested use case of breaking into TFC139 phones with fw version 8.8.17, no options are normally needed, but the following options are supported: -a address This option changes the RAM address into which the "shellcode" is to be written; the argument is always interpreted as hex. The default is 0x800000, as used by the mot931c.exe closed source tool on whose reverse-engineering our hack-utility is based. -B baud This option changes the serial baud rate just like in rvinterf and rvtdump, but the default is 57600 as needed for breaking into TFC139 firmware. -l logfile Log activity in a file, just like rvinterf and rvtdump. -s address Just like mot931c.exe has been observed to do, we start our stack smashing attempts at a certain address, and keep incrementing by 4 until we either succeed or crash the fw in some other way that does not help us. This option changes the starting address for these stack smashing attempts; the argument is always interpreted as hex. The default is 0x837C54, as observed from the reverse engineering of mot931c. -w number_in_seconds See rvinterf.usage; the option is the same for tfc139 as for rvinterf.