Ace

HardMalware Reverse Engineering

Overview

H-hewwo? Hacker-senpai? (。•̀ᴗ-)✧

We found a super mysterious, super kawaii artifact fwloating in the network! It l-looks like a cute little pet simulator, but... gasp! Neko-chan is hiding a biiiig secret! She has a flaggy-waggy, but she split it into two pieces and hid them away! >w<

She is a very shy kitty:

  1. She's Camera Shy! If you try to take a pic of her, she gets scared and turns off the lights! (O_O;) Can you find a way to see her true colors?

  2. She speaks in Code! Neko-chan only whispers in secret encwypted meows. Her diary is locked tight!

She’s waiting for a worthy master to give her headpats...
Can you decrypt her heart and become the Neko Champion? 

 A Very Impawtant Note! 

Regarding Connection Errors / "Handshake Failed"

When you try to play with Neko-chan, she might get grumpy and HISS at you! (Connection Failed / Security Error).

THIS IS NOT A BUGGY-WUGGY! 
PWEASE DO NOT REPORT THE SERVER AS DOWN!

Neko-chan is supaa paranoid! She has been programmed to only trust her specific owner. By default, she will reject your connection and refuse to talk to you.

Convincing her to accept your connection—even though she wants to block you—is part of the challenge! You have to fix her connection logic yourself!

Good luck, Hacker-Senpai! Do your best! Ganbatte! (ノ^ω^)ノ゚

 

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Lab Details

Prerequisites & Requirements

  • Flutter advanced reverse engineering
  • Using Frida
  • X64 reverse engineering

What will you learn?

  • Flutter advanced windows reverse engineering
  • Patching flutter engine manually

Tools

  • Flutter
  • IDA Pro
  • Bindiff
  • Strings
  • reflutter

Job Positions

Reverse Engineer

Tags

Ida ProDebuggerStatic AnalysisDynamic AnalysisDisassemblerHookingApi CallsObfuscationAesPatching