TunMode Android

TunMode is an Android project that routes traffic through a VPN to intercept packets. It supports TCP and UDP protocols and works on a semi-TCP stack, making it suitable for intercepting packets. You can also optionally intercept DNS queries or let the system resolve them. Essentially, TunMode acts as a proxy without editing or blocking any packets, allowing traffic to flow in and out seamlessly.

Features

• Route traffic through a VPN to intercept packets
• Support for TCP and UDP protocols
• Optional DNS query interception
• Proxy-like functionality with transparent traffic flow

Notes

• Might not work properly on Android 14 because of some API changes on that version. I am unable to test it.
• Doesn't support IPv6.

Usage

1. Download the TunMode APK
2. Install the APK on your Android device
3. Open and click button in the center
4. Start intercepting packets and DNS queries as needed

Prerequisites

• Android Studio
• Android SDK API Level 21 or higher
• Android NDK 25+ (maybe 24 is also ok, didn't test)

Building the Project

1. Clone the repository
2. Open the project in Android Studio
3. Build and run the project on a connected Android device or emulator

Contributing

We welcome contributions to TunMode! If you have any ideas, bug fixes, or feature enhancements, feel free to contribute by submitting a pull request. Please refer to the contribution guidelines for more information.