GDB no such file or directory

Question

I\'m following these lessons from OpenSecurityTraining.

I\'ve reached the lab part where I\'ve to train myself on a CMU Bomb. They provide a x86_64 compiled CMU Bomb

Answer 1

Use dir command to set source path

dir /usr/src/debug

in above path. Your code should present.

Answer 2

The executable contains debugging symbols, which indicate the file (and particular line in the file) corresponding to each bit of assembled code. This is what allows you to step through C code in the debugger. The debugging symbols are put there by the compiler (e.g. by using the -g argument to gcc).

If you don't have the C files that were used to compile the executable, the debugger won't be able to show you the C, and you'll be limited to looking at assembly.