2024
ATM Disk Encryption Bypass: Field Techniques and Defenses
Walked through the full attack chain against modern ATM disk encryption: bypassing cold-boot protections, extracting keys from volatile memory, and defeating FDE implementations in production cash-handling systems. Covered firmware extraction, unattended key management flaws, and the physical attack surface that survives software hardening. Ended with the responsible-disclosure findings and recommendations for hardened boot architectures.
Embedded Systems Exploitation: Vending Machine Attack Surface Analysis
Security analysis of networked vending machines running embedded Linux and Windows IoT: unauthenticated cashless payment APIs, and remote code execution through unpatched telemetry agents. Demonstrated full compromise of MDB (Multi-Drop Bus) payment interfaces, manipulation of product pricing logic, and persistent implants that survive reboot cycles. Findings cover 5+ major vending platforms along with the vendor disclosure outcomes.
JWT Algorithm Confusion: Large-Scale Exploitation and Mitigation
Systematic analysis of JWT library implementations across 40+ major frameworks, revealing authentication bypass vulnerabilities in production SSO deployments.