fdump

A simple tool to dump function binary code from binary elf. Note that it doesn't corp with call. Any function contains call to other function will fail definitely.

Tutorial

1. Firstly, put on auto completion.

   . ./source_me
   

2. Next, compile fun_add.c

   gcc ./fun_add.c
   

3. View all functions (except internal functions)

   ./fdump.sh -list ./a.out
   

4. Let's dump that fun_add function. fun_add is a function that increases the value which pointed by the first argument by 1.

   ./fdump.sh -dump ./a.out fun_add
   

5. Dump just the hex stuff.

   ./fdump.sh -dumphex ./a.out fun_add
   

6. Dump to C and make it callable.

   ./fdump.sh -dumpc ./a.out fun_add
   

7. Modify the function prototype to let we pass arguments. I've done that for you in example.c . So we just see and compile the example.c .

   gcc ./example.c
   

8. Test it. Done!

   ./a.out
   

explore functions with

./fdump.sh [tab]

Screenshoots