GDB does not see symbols

Question

I have decrypted an app and ran nm command on the binary which gave me a very long list of symbols which I can also easily find in IDA PRO and Hopper. Yet when I am in GDB and run info fun on any of the symbols it tells me it cannot find it. When I dump info fun to a file none of the symbols match what I got from nm. Why is this? o.O

Answer 1

I was able to solve this problem by using the file command on the decrypted app before attempting to run a debug session on the device.