Beyond the Signature: Bypassing Windows Defender with a Custom C2 Framework (Part 1)
Introduction I recently began exploring the inner workings of the Sliver C2 framework after completing the “Sliver C2: Pentesting and Evasion” course by Tyler Ramsbey (Senior Security Engineer and Lead Instructor at TCM Academy). His course provided a massive spark of inspiration, demystifying how modern Command and Control (C2) frameworks operate and how they can be tuned to bypass Antivirus (AV) solutions. While Sliver is an incredible Go-based tool, I wanted to test the limits of my own development skills. This project started as an exploration of the fundamental mechanics of evasion. Using the practical insights from Tyler’s teachings, I decided to build my own C2 agent and server—written entirely in Python. ...