PostMessage_Fuzz_Tool Chrome Extension (2025)

-> We only need two files now i.e "postmessage-hook.js" and "PostMessageMainTool-2025.zip"

Installation

1. Install Tampermonkey

2. Install the TampermonkeyScript "postmessage-hook.js" from repo.

3. Goto chrome://extensions/ and enable "Developer Mode" by click toggle button in right side.

4. Extract "PostMessageMainTool-2025.zip"

5. Then click "Load unpacked" button and select the extracted folder, it will add the Postmessage Tool in chrome://extensions/ .

How to get started.

1. Click on TamperMonkey icon and click on PostMessage script toggle button ( to enable it) and rest is explainable itself (see images below).

#Using : https://youtu.be/2CLWyj9uFEg (old one)

###Credits to Appcheck ng for POC tool.