App - System

Hi all,

I have been working on this challenge for days, and I have succesfully redirected the program to where I would like it to be executed but the problem is the shell does not open if add a part to change setuid in assembly. If I do not add that piece of code the shell opens but I do not have sufficient permissions to do the job. I do not want to spoil and if you think I am spoiling please edit my question. Any hint regarding my question will greatly be appreciated.