PostMessageFuzzTool Chrome Extension (2025)

May 17, 2025 ยท View on GitHub

-> 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).

1

2

3

4

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

###Credits to Appcheck ng for POC tool.