Omnimaga > Ndless

Finding Syscalls

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Legimet:
I would like to know how Ndless syscalls are found. How do you do it?

Lionel Debroux:
Such things are usually found through comparison of disassembly with older versions, and more disassembly :)

Legimet:
So what file has to be disassembled, and what is a good disassembler?

lkj:
You need to disassemble the unencrypted OS. I think the easiest way to get that is dumping the memory to a file in nspire_emu. You can do that with the "wm" command in the integrated debugger.
IDA is the normally used disassembler.

Legimet:
OK, I'll take a look at IDA. What arguments should I pass to wm? It looks like you need the start address and the size.

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