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Learn how a casual gaming dare evolved into the discovery of critical vulnerabilities affecting OpenVPN endpoints worldwide in this comprehensive conference talk. Explore a complete reconnaissance and attack methodology that combines traditional OSINT techniques with modern cloud-based intelligence to systematically map, target, and exploit VPN infrastructure at scale. Discover how a single vulnerable driver identified through VirusTotal RetroHunt led to uncovering over 50 vulnerable drivers, revealing widespread security weaknesses in OpenVPN deployments across thousands of organizations. Follow the complete attack chain from passive reconnaissance through active exploitation, including OSINT-driven infrastructure mapping, remote reconnaissance, credential harvesting, remote-to-local compromise, and kernel-level code execution using BYOVD (Bring Your Own Vulnerable Driver) techniques. Master practical skills including writing custom YARA signatures for large-scale vulnerability hunting, performing OSINT-based supply chain analysis, building comprehensive target profiles through open-source research, enumerating remote services via SMB and named pipes, capturing and cracking NTLMv2 hashes using cloud GPU platforms, exploiting UNC paths and OpenVPN plugin mechanisms for remote code execution, escalating privileges through "Open Potato" named pipe hijacking, and applying BYOVD techniques for kernel execution and security product bypass. Gain insights into repurposing these methodologies for red teaming, bug bounty hunting, threat intelligence, and VPN infrastructure assessments through live demonstrations and hands-on techniques presented by Vladimir Tokarev, Senior Security Researcher at Microsoft, during this 40-minute session recorded at Recon Village during DEFCON 33.
