About PacketProxy

PacketProxy is an open-source proxy tool that can intercept and inspect any protocol over TCP/UDP, not limited to just HTTP/1.x, HTTP2, or HTTPS.

PacketProxy is designed for testing web applications for internal use, which helps app development and finding vulnerabilities on your applications.

Screenshot

Features

Full-featured local proxy tool
- Save all captured packets (i.e., requests and responses) and show them in the history tab
- Filter/Search packets in the history tab (e.g. requests==/api/v1/users to show only requests whose path contains /api/v1/users )
- Modify the contents of intercepted packets before forwarding them to the destination
- Resend (or replay) captured packets with or without manually modifying the contents
- Show differences between any two received packets
Support for protocols over TCP/UDP, not limited to HTTP/HTTPS
- Built-in encoders/decoders enable users to inspect/intercept HTTP1, HTTP2, HTTPS, WebSocket, FireBase, Firestore, MQTT, gRPC, Protocol Buffers, XMPP on TLS, MessagePack, and CBOR messages
- Easy to develop an extension to decode/encode protocols not listed above
Features for application penetration tests
- Send multiple packets simultaneously to test race conditions or any inconsistent state due to improper synchronization/locking.
- Even possible to simultaneously send packets with different messages. ( Bulk Sender )
- Replace a server certificate with a self-signed one for testing if a client app properly validate certificates
- Embedded an easy to configure DNS server to route requests from a client to PacketProxy, which is one of the easiest ways to proxy packets transparently
- Save/Load settings and history data of a project as an SQLite3 file
- Support Windows, macOS, and Linux

Install

The recommended way to install PacketProxy is to download an installer for your platform from the PacketProxy's release page and execute it.

You may also use Homebrewk to install PacketProxy if your platform is macOS. In that case, installation is done by just typing $ brew install packetproxy

Using PacketProxy

Take a look at this page to get started: For Users

Extending PacketProxy

If you want to develop an extension to support additional protocols or improve core functionalities/UIs, please have a look at this page: For Developers

License

This program is distributed under Apache License 2.0