The credits of this writeup go to KZA.
I used his writeup to understand the tool. The goal of this writeup is to give more details about all the steps for people (like me) who are beginners in digital forensic.
Enjoy!

Original writeup (https://dropn0w.medium.com/excellent-challenge-h-cktivity-con-ctf-2021-6ceabaadc7aa).