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Posts in category: shellcode

From MessageBox to Rootkit: A Practical Journey Through Windows Malware Internals

From MessageBox to Rootkit: A Practical Journey Through Windows Malware Internals

April 27, 2026
by oxfemale APCDriverHookingInjectionIOCTLIRPkernelPEBshellcodewinapiwinapiwindows

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.

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Abusing WinML for In-Memory Staging and EDR Evasion

Abusing WinML for In-Memory Staging and EDR Evasion

April 14, 2026
by oxfemale BypassingcppMachine LearningshellcodewindowsWML

The research shows how attackers can embed payloads inside ONNX ML models and load them via Windows WinML APIs, staging malware entirely in memory while blending into legitimate machine-learning application behavior.

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Tutorial: Adaptix C2 with ShellcodePack and MacroPack

Tutorial: Adaptix C2 with ShellcodePack and MacroPack

April 9, 2026
by oxfemale EDRMalwareshellcode

This tutorial shows how to weaponize Adaptix C2 agents using ShellcodePack and MacroPack, converting payloads into shellcode and packaging them in evasive loaders to improve stealth and bypass EDR during red-team operations.

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Inside the Payload: Manual Shellcode Analysis with Ghidra

Inside the Payload: Manual Shellcode Analysis with Ghidra

March 31, 2026
by oxfemale DebugGhidraMalwareReverse Engineeringshellcodewinapiwinapiwindows

The article demonstrates how to analyze Windows shellcode in Ghidra by identifying API-hashing routines, resolving hidden Windows API calls, and extracting C2 infrastructure without relying on automated emulation tools.

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Malware and cryptography 44 - encrypt/decrypt payload via Discrete Fourier Transform. Simple C example.

Malware and cryptography 44 – encrypt/decrypt payload via Discrete Fourier Transform. Simple C example.

March 10, 2026
by oxfemale cppCryptographyEncryptionMalwarepowershellpowershellshellcodewindows

Demonstration how malware can encrypt and decrypt payloads using the Discrete Fourier Transform (DFT). It provides a simple C example showing how mathematical transforms can hide shellcode and help evade static signature-based detection.

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Defeating Windows DEP Using ROP Chains Leveraging VirtualAlloc

Defeating Windows DEP Using ROP Chains Leveraging VirtualAlloc

March 2, 2026
by oxfemale buffer overflowDebugDEPexploitationROPshellcodeWinDBGwindows

Uses manual Return-Oriented Programming (ROP) to chain existing code fragments and call VirtualAlloc, changing memory permissions to bypass Windows DEP and then execute shellcode in exploited process memory.

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RPC Proxy Injection Part II: Breaking Elastic EDR Telemetry

RPC Proxy Injection Part II: Breaking Elastic EDR Telemetry

February 23, 2026
by oxfemale BypassingcppEDRexploitationInjectionLibraryRedTeamRPCSecurityshellcodeuser-modewinapiwinapiwindows

The article explains enhancing RPC Proxy Injection to evade Elastic EDR telemetry by avoiding common API calls like WriteProcessMemory and CreateRemoteThread, using custom shellcode delivery via thread descriptions and APCs to hide malicious behavior.

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Living off the Process

Living off the Process

February 23, 2026
by oxfemale BypassingEDRexploitationInjectionRCESecurityshellcodewindows

The article “Living off the Process” details a technique to inject and execute shellcode into a remote Windows process by reusing existing RWX memory, ROP gadgets, and threads within that process, avoiding conventional memory allocation and lowering detection footprint.

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Inside the Beast: Building Ultra-Optimized Windows Shellcode from Pure C

Writing Optimized Windows Shellcode (old but gold)

February 13, 2026
by oxfemale BypassingcppEDRLoaderPEBshellcodeTEBwinapiwinapiwindows

A deep dive into crafting ultra-compact Windows shellcode that walks the PEB, resolves APIs via export hashing, and runs fully self-contained without imports — showing how C can build stealthy, position-independent payloads.

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EarlyBird APC Code Injection

EarlyBird APC Injection: A Deep Technical Analysis

February 13, 2026
by oxfemale APCBypassingEDRInjectionshellcodewinapiwindows

The EarlyBird APC technique creates a trusted process in a suspended state, allocates memory for shellcode, and writes the payload. It then queues the shellcode as an Asynchronous Procedure Call (APC) to the suspended thread. Resuming the thread forces immediate, stealthy execution of the malicious code.

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