Run a python command with "run" on GDB

Question

Hi I'd like to run a python command python -c 'print "\x90"*52' when the program start in GDB, as I would do when I execute : python -c 'print "\x90"*52' | ./myProg . Does anyone knows any way to acheive this?

What I've tried so far :

• `python -c 'print "\x90"*52' ` run
• run `python -c 'print "\x90"*52' `

I really apologies if I'm not asking on the right StackExchange forum. Thanks.

EDIT

here is a useful link I found talking about input payloads redirection : Managing inputs for payload injection?

Answer 1

You do not have to use another file, it is just redundant

You can do this by using "Here strings". In your example you can do :

r <<< $(python -c "print '\x90'*52")

You can read about "Here strings" here

Answer 2

I don't know of any way to run a script as a run argument.
A common solution is to redirect your input from a file.

You first need to run the script and save the result:

python -c "print 'A'*50" > my_file

and redirect it to gdb run.

r < my_file

also, from the help run command:

Input and output redirection with ">", "<", or ">>" are also allowed.

which means you can also redirect output if needed.