Reverse Engineering Call of Duty's User-Mode Anti-Cheat
2025-01-21
This post details a deep dive into TAC, the user-mode anti-cheat in Call of Duty: Black Ops Cold War. The author meticulously reverse-engineered TAC, revealing its sophisticated techniques. These include runtime API lookups, anti-debugging measures (detecting debug registers and test signing mode), API hook detection, external overlay detection, and innovative encrypted custom syscall stubs. The analysis covers TAC's process termination methods, anti-signature scanning, and other anti-debugging tricks. The integration with Arxan code protection further enhances TAC's robustness. This research provides valuable insights into anti-cheat mechanisms and reverse engineering.
(ssno.cc)