SILENTTRINITY is an asynchronous, multiplayer command and control (C2) framework designed for post-exploitation activities. Built with Python 3 and leveraging .NET's Dynamic Language Runtime (DLR), the framework implements a technique called BYOI (Bring Your Own Interpreter) to dynamically call .NET APIs using embedded third-party .NET scripting languages. The framework supports multi-user collaboration and multi-server connectivity, allowing multiple operators to work simultaneously across different team servers. Communication between clients and team servers occurs in real-time through WebSocket connections, providing immediate updates and coordination capabilities. SILENTTRINITY features a modern command-line interface powered by prompt-toolkit and focuses on usability for penetration testers and red team operators. The framework enables dynamic evaluation and compilation using .NET scripting languages, offering flexibility similar to PowerShell-based attacks without actually utilizing PowerShell. The tool is designed to shift away from traditional C# tradecraft by providing more flexible scripting capabilities while maintaining stealth and effectiveness in post-exploitation scenarios.
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