Rating:

Reversing challenge, solved with ghidra/pwndbg/pwntools

Solve script: https://github.com/Crypto-Cat/CTF/blob/main/ctf_events/seetf_22/rev/babyreeee/solve.py

Video walkthrough: https://youtu.be/-cc4U1H53F8?t=132

Original writeup (https://youtu.be/-cc4U1H53F8?t=132).