App - System

Hello,
I am trying to solve the format string problem and I printed out the stack using: "$(python -c ’print "%08x " * 20 ’)" and found ascii characters and converted output from little endian to big endian using python.
The password I found was 14 characters, but it’s not the right solution for some reason. I think I am doing this correctly. What is wrong with how I am approaching this problem?