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Second installment of a reverse-engineering series examining xhunter2.sys, a Windows kernel driver, focusing on its three-layer authentication mechanism. Based on the title and URL only (page content could not be processed this pass); likely details disassembly/unpacking work to bypass or understand the driver's access-control checks, relevant to BYOVD/EDR-killer tradecraft analysis.
A technical writeup by security researcher BlackSnufkin describing the discovery of a live, unpatched 0day kernel-mode local privilege escalation (LPE) vulnerability in an anti-cheat driver reportedly deployed on roughly a billion Windows machines. The post likely covers the vulnerability research and exploitation process targeting the anti-cheat's kernel component. Full page content could not be verified in this pass; summary is inferred from title and URL alone.
Analysis of CVE-2026-8501, a vulnerability in the PCTCore64.sys driver that allows arbitrary process termination, enabling a Bring Your Own Vulnerable Driver (BYOVD) attack. Such flaws let attackers with a signed but vulnerable kernel driver kill security/AV processes from user mode, a common technique for disabling endpoint defenses prior to further compromise.
Analysis of CVE-2026-3609, a vulnerability in XIGNCODE3's kernel anticheat driver (xhunter1.sys) that leaks a handle allowing bypass of Protected Process Light (PPL) protections, enabling local privilege escalation. The post likely details how an unprivileged process can abuse the driver's IOCTL interface to obtain a handle to a protected process and escalate privileges on Windows.
blacksnufkin.github.iowriteup