HackVent 2023 - [HV23.03] Santa's grille

Difficulty: Easy

Categories: Cryptography, Fun

Author: brp64

While contemplating the grille and turning some burgers, Santa decided to send all the hackers worldwide some season’s greetings.

I’ve used https://merri.cx/enigmator/cipher/grille.html and played a bit around with the grille to match HV23{. After some trial and error I got to the following grille:

That resulted in 3r4y_hHV23{mt2023}8ckven, with a bit of guessing I could determine the flag: HV23{m3rry_h8ckvent2023}