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NEW QuizDuel! Hook library

based on the template from Djangø

Disclaimer: For educational purposes only

Hooks into the NEW QuizDuel! android application using Cydia Substrate and KittyMemory and applies some nice features like a ✔️ to the correct answer

New Features

  • Offsets should now auto-update

Installation

  • Download this github files and unzip it.
  • Download Android NDK, Revision 16b from here or using Android Studio

Loading the libhook.so

First we need to compile our project.

  • Edit params.txt & paste your ndk-build path location on the very first line and the project location on the second line like I did.
  • Start Build.bat and follow instructions.
  • Once compiled you'll have 2 new file in x32 and x64 named libs and obj. In order to load your libhook.so, you'll need to decompile the apk, you can use Apk Easy Tool for this.
  • Go to libs and copy the created libhook.so in the lib folder of your decompiled game.
  • Navigate to "/smali_classes3" & copy the com folder inside the Smali Files filder from this git to that folder.
  • Open the AndroidManifest.xml file in the decompiled apk and search this
android:name="android.intent.action.MAIN"

it will give us the path of the MainActivity so in our case it's at "com.google.firebase.MessagingUnityPlayerActivity" but using "com.unity3d.player.UnityPlayerActivity" as it's stated in most other tutorials is working fine too.

  • Open the file you've chosen with Notepad++ or any other preferred text editing software and search something like this:
.method protected onCreate(Landroid/os/Bundle;)V
    .locals 2
  • Once found, paste this code under .locals 2:
invoke-static {}, Lcom/loadLib/libLoader;->loadLib()V
  • Step 1: Recompile the apk
  • Step 2: Profit

Useful links

About

a hook for the quizduel app written in c to modify various things in the app e.g. add a ✔️ to the correct answer

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