Game 3 - CatSeabank

Category
Reverse Engineering
Points
-1
Solves
-1
Tags

We made a game.

https://drive.google.com/file/d/1R5EdsswQydsUQZIToQDkR-1CpwRIzmiK/view?usp=drive_link

In this challenge, we were given a Unity game file and needed to extract the hidden flag through reverse engineering.

Steps to Extract the Flag

  1. Decompiling the Game
    • We can decompile the game using a tool like AssetRipper.
  2. Extracting the Audio Clip
    • From the extracted assets, an AudioClip directory was identified as a potential source of the flag.
  3. Converting to Spectrogram
    • The file in AudioClip was converted into a spectrogram using a tool like Sonic Visualiser or AudaCity.
    • The spectrogram revealed the hidden flag embedded within the audio.

By analyzing the spectrogram, we successfully retrieved the flag:

alt-text

Game 3 - CatSeabank Flag: KashiCTF{1t_Wa5_Ju5t_4_Tutori4l_RIP}