Hook Dll - Advanced

This report is for educational and defensive security research purposes only. Technical Report: Implementation of an Advanced Hook Dynamic Link Library Project Codename: ShadowLink Version: 2.1.0 (x64 Compatible) Date: October 26, 2023 Author: Security Research Team 1. Executive Summary This report details the architecture of ShadowLink.dll , a modular hooking engine designed to intercept low-level Windows API calls without detection by standard integrity checks. Unlike basic IAT (Import Address Table) hooking, this solution utilizes Inline Hooking and Hardware Breakpoints (Vectored Exception Handling) to bypass common anti-tampering mechanisms.

| Hook Type | Overhead per Call | CPU Cycle Cost | Stability | | :--- | :--- | :--- | :--- | | | 30 ns | ~120 cycles | High (Synchronous) | | Inline Hook (14-byte) | 85 ns | ~340 cycles | High | | VEH Hardware BP | 1,200 ns | ~4,800 cycles | Moderate (Context switch) | advanced hook dll

// Call original via trampoline NTSTATUS status = ((NtCreateFile_t)(g_pTrampoline))( FileHandle, DesiredAccess, ... ); This report is for educational and defensive security

NTSTATUS WINAPI Detour_NtCreateFile( PHANDLE FileHandle, ACCESS_MASK DesiredAccess, ... ) // Log the action via shared memory LogToPipe("NtCreateFile Called - Access: 0x%X", DesiredAccess); Unlike basic IAT (Import Address Table) hooking, this