While this is the writeup for It's Not My Fault 2 the script will still work for It's No tMy Fault 1 as they are very similar and the script for It's Not My Fault 2 will actually
just solve It's Not My Fault 1 faster than most other solutions to it. Check it out and see how it applies to both challenges:

https://github.com/Ethan127/CTF_writeups/edit/main/picoCTF_2021/Cryptography/it's-not-my-fault-2/

Original writeup (https://github.com/ZeroDayTea/PicoCTF-2021-Killer-Queen-Writeups/blob/main/Cryptography/ItsNotMyFault1.md).