Between 2025 and 2026, BYOVD attacks completed a fundamental paradigm shift: from exploiting known-vulnerable drivers to abusing legitimately-signed drivers and certificates themselves. This English rewrite of the Ghost Wolf Lab research walks through dual-driver campaigns, single-byte signature-preserving hash flips, independent certificate abuse, and Microsoft’s March 2026 cross-signed trust removal.
The article explains how kernel anti-cheats monitor games from Ring 0 using callbacks, handle filtering, memory scans, driver checks, anti-debugging, VM detection, and hardware fingerprinting.
The article walks through Windows malware development from dynamic API resolution and PEB walking to injection, APC execution, driver basics, DKOM process hiding, and kernel callback abuse.
ENKI analyzes CVE-2026-32223, a heap overflow in Windows usbprint.sys triggered by malformed USB printer descriptors, leading to SYSTEM privilege escalation via crafted USB device.
The KillChain exploit leverages a vulnerability in ProcessMonitorDriver.sys (CVE-2026-0828) by abusing an exposed IOCTL that allows a user-mode application to terminate arbitrary processes — including protected system services — effectively bypassing standard Windows security checks.
The article explains out-of-bounds vulnerabilities in Windows kernel drivers, showing how unchecked indexes, user-controlled offsets, and unsafe memory copies can cause kernel memory leaks, corruption, privilege escalation, or system crashes.
The article analyzes a Win32k type confusion vulnerability in the async window action path of win32kfull.sys. Improper handling of window objects can corrupt kernel structures and potentially enable local privilege escalation.
The article shows how BYOVD techniques bypass Windows Code Integrity by loading a vulnerable signed driver and exploiting its IOCTL interface to gain arbitrary kernel read/write access and manipulate protected kernel memory.
A technical walkthrough showing how to unpack a VMProtected Windows kernel driver using WinDbg and dynamic analysis. The guide demonstrates restoring the hidden Import Address Table and dumping a clean driver for reverse engineering.
The article explains how attackers exploit a vulnerable signed driver (BYOVD) to obtain a kernel read/write primitive. It shows how unsafe IOCTL handlers allow manipulating kernel memory and abusing driver functionality for offensive operations.
