C.R.I.S.P.

(Capture, Rewrite, Inspect, Send, Proxy)

C.R.I.S.P. is a Python-based web proxy tool, designed to intercept, modify, and forward HTTP/HTTPS traffic.

Features · Architecture · Tech Stack · Dependencies

Features

1. Capturing requests

• Intercept and log HTTP/HTTPS requests and responses from the browser.

2. Modify requests

• Modify requests and responses before forwarding them to the server or client.

3. HTTP history

• View the history of captured requests and responses.

Architecture

Proxy Server

• The proxy server acts as the core component to intercept HTTP/HTTPS traffic.
• A listener socket captures client requests and forwards them to the destination server.

SSL/TLS Support

• The proxy server supports SSL/TLS connections for HTTP traffic.
• Download the CA certificate and install it in the browser to intercept HTTPS traffic.

Setting Up API Endpoints

• The API endpoints allow your UI or CLI to interact with the intercepted traffic.(Flask or FastAPI)

UI Layer

• The UI layer provides a user-friendly interface to view and modify the intercepted traffic.

Database Layer

• storing http history and logs

Tech Stack

Dependencies

The following Python libraries are required to run the project:

• Flask or FastAPI (for UI and API handling)
• pyOpenSSL (for SSL/TLS support)
• socket, ssl, urllib.parse (for proxy server functionality)
• threading (for concurrent operations)
• logging (for logging requests and responses)
• ssl (for SSL/TLS certificate generation)