nativemessaging-mitm

Monster-in-the-middle native messaging and spy on your favorite browser extensions.

Instructions

1. Clone this repository: git clone https://github.com/KarimPwnz/nativemessaging-mitm

2. Open configs.json and add the target app manifest path, the name of the target extension, and the app manifest's original app path:

{
    "/Users/example/Library/Application Support/Mozilla/NativeMessagingHosts/example.json": {
        "name": "example",
        "originalApp": "/Applications/example.app/example"
    }
}

3. Change the app path in your target's app manfiest to the repository's mitm.js script:

{
    "name": "com.example",
    "description": "Example",
    "path": "/path/to/nativemessaging-mitm/mitm.js",
    "type": "stdio",
    "allowed_extensions": ["example@example.com"]
}

3. Done! Run the target browser extension and logs/${extension_name}.log will start logging:

$ tail -f /path/to/nativemessaging-mitm/logs/example.log

[1] ← (APP): {"hello":"extension"}

[2] → (EXTENSION): {"hello":"app"}

[3] ← (APP): {"okay":"bye"}