Sliver is a cross-platform general purpose implant framework written in Golang and designed to be an open source alternative to Cobalt Strike. Sliver supports asymmetrically encrypted C2 over DNS, HTTP, HTTPS, and Mutual TLS using per-binary X.509 certificates signed by a per-instance certificate authority and supports multiplayer mode for collaboration.

Senior Security Associate Joe DeMesy and Security Associate Ronan Kervella will explore how to design stable, performant, and secure C2 channels as well as other design challenges when creating implants as they present at SummerCon 2019.