ShellCrash is a shell-based network proxy manager and DNS and routing controller. It functions as a transparent proxy gateway that intercepts local traffic and DNS requests to route data through a proxy server.
The system manages the deployment and upgrading of proxy binaries, such as sing-box and mihomo, within a shell environment. It includes a web-based management interface and traffic dashboard for visualizing network activity and modifying routing rules.
The project provides capabilities for network traffic routing, including UDP proxy support, local traffic bypasses for domestic IP addresses, and side-gateway configuration to serve other devices on a local network. It also features automated configuration updates via subscription links and scheduled background tasks for refreshing network rules and recovering firewall settings.