Help with non-samsung oscam integration

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Joined: Sat Nov 17, 2018 3:27 pm

Help with non-samsung oscam integration

Post by samunderscore »

Hello fellow board members

I have cheap TV Gogen TVF32R571STWEB made by Vestel. It's Novatek-based ARM with 2 cores and 768MB RAM (so should be similar to T-NT14x/H series? not sure I got it correct by looking around). I have found ... Lib_T-NT.c to match a good deal of FW API, so I tried my luck and attempted to inject it with samyGOso 1.2.5. Basically I was trying to get printed list of found/injected symbols/whatever. Instead it crashes FW, and that's the reason I'm here. I have loaded core dump to gdb (yep, it's there directly in TV), and it claims

Code: Select all

Core was generated by `idtv'.
Program terminated with signal SIGSEGV, Segmentation fault.
Cannot access memory at address 0xffffffff
#0  0xa1556c20 in ?? ()
(gdb) bt
#0  0xa1556c20 in ?? ()
#1  0xa1556bf4 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
I don't know what other info to attach. I'm just toying with Ghidra, my reversing/security researching knowledge is quite low. Could anyone help me get further, I guess it's problem with my toolchain(gcc-linaro-arm-linux-gnueabihf-4.9-2014.08_linux, found reference in firmware)/samyGOso? Thanks, sam_

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