Routopsy – Hacking Routing with Routers

This BlackHat USA 2020 summary presents Routopsy, a modular tool and research into exploiting insecure or misconfigured dynamic routing (OSPF/EIGRP/BGP/RIP) and FHRP (HSRP/VRRP) protocols to perform network enumeration, route injection, traffic redirection, and gateway takeover. The report explains protocol considerations (timers, priority, authentication), Routopsy internals and operation modes (--scan, --attack, --inject, --redirect and local variants), demonstrates lab topologies, and provides detection and remediation recommendations.