Deep dive into KernelCallbackTable process injection, a technique that abuses the PEB's callback table to intercept and redirect Windows message handling, achieving code execution in target GUI applications.

Proof of Concept for manipulating the Kernel Callback Table in the Process Environment Block (PEB) to perform process injection and hijack execution flow - 0xHossam/KernelCallbackTable-Injection-PoC

A defender-side surface map of Windows kernel/user-mode covert channels — mailslots and ALPC, firmware-table providers and WNF, dispatch tables and writable .data pointers, KernelCallbackTable, MDL-backed mailboxes, GPU/DXGK primitives, page-guard signals, EPT/MMIO, DMA cards, and visual capture. Covers the six-plane channel grammar, PatchGuard exposure classes, and a production detection program with baselines, cross-view validation, and false-positive control.

KernelCallbackTable injection abuses Windows GUI callbacks to run code inside trusted processes while blending into normal OS behavior.

新たに文書化されたインジェクション技術は、Windowsグラフィカルサブシステム（win32k.sys）が使用するカーネル・ユーザー間のコールバックディスパッチパスを悪用し、KernelCallbackTableの構造を維持したままリモートコード実行を実現します。 KernelCallbackTableのエントリをシ

A newly documented Windows injection technique shows how attackers could abuse a legitimate win32k.sys callback path to run code inside another GUI process. The method was detailed by security researcher n0qword in a Win32k Callback Detouring write-up published in April 2026. The technique focuses on the KernelCallbackTable, a structure found in GUI-enabled Windows processes. Windows […] The post Hackers Could Abuse WM_COPYDATA Callback Path to Execute Code Through Win32k Dispatch appeared first on VPN Central.