i recently did some reversing on eac to emulate it and after breaking down their sub contextualized memory synchronization layers i found that their cr3 pivot swaps at 0xfffff8023a5de7f0 were completely vulnerable to page walk misalignment desyncs allowing for full thread deserialization within a self referencing enclave buffer this meant that by hyper extending the idt remap via a segmented ept hook at 0xfffff80764bb1290 i could seamlessly mirror syscall return states into an orphaned pml4 table effectively circumventing their heuristic based dispatcher validation eac s syscall gating handler sgh at 0x7ff67892f1d0 completely fails when you invoke a context aware tlb cache stall forcing their ntqueryvirtualmemory invocation layer into a false positive loop rendering their entire integrity verification stuck in a deferred stack traversal exception by artificially injecting a context switching null descriptor into their dr7 register offsets i was able to overload their event queue stack making eac believe it was still running while actually being fully desynchronized from the windows object manager to permanently halt eac service execution i hooked their obfuscated watchdog timer routine eac watchdog proc at 0xfffff80a37d45e90 and inverted its call stack through a synthetic race condition which forced their thread context to misalign its service dispatch table this caused their kernel resident page scanner to unmap itself leaving the entire anti cheat infrastructure frozen in a self referential memory loop by force injecting a recursive ntsuccess 0xc0000420 handler into their apc queue the entire system collapses into a segmented pte reallocation deadlock ensuring eac never recovers at this point the entire anti cheat exists in a suspended quantum state where their thread scheduler no longer acknowledges execution but continues reporting uptime to the watchdog service eac is finished
i went deeper into the code and found more vulnerabilities in their memory management system it seems like they didn t properly handle memory synchronization which led to all these issues i also noticed that their syscall validation was weak allowing me to bypass it easily by manipulating the syscall return states i think they should improve their memory synchronization and validation mechanisms to prevent such exploits in the future
furthermore i realized that eac s reliance on heuristic based validation made it vulnerable to false positives and negatives this means that even if they fix the current vulnerabilities new ones could arise if they don t fundamentally change their approach to security i believe they should consider using more robust validation techniques that are less prone to manipulation
in conclusion exploiting eac s vulnerabilities required a deep understanding of its internal mechanisms and a sophisticated approach to bypassing its security checks by leveraging vulnerabilities in cr3 pivots idt remaps and syscall validation attackers can compromise eac s integrity and render it ineffective this analysis highlights the importance of robust memory synchronization and security validation in anti cheat systems to prevent such exploits
to mitigate these vulnerabilities developers should focus on enhancing memory synchronization protocols and implementing robust validation mechanisms this includes enhanced memory synchronization improving validation mechanisms and regular security audits by addressing these challenges anti cheat systems like eac can be made more resilient against sophisticated attacks ensuring the integrity of gaming environments and protecting users from malicious activities