In this article, I will talk about the theories and implementations of API hooking. API hooking is a powerful technique that allows someone to hijack a function and redirect it to a custom one. Anything can be done in these functions before passing control back to the original API.

ASM

C++

Windows

WinXP

Win32

Reverse Engineering and Function Calling by Address

24 Sep 2008 by AlexAbramov

Ever wanted to know how to call internal functions of other processes? This is an article on just that -- you'll learn how to read disassembled code in a project where the source code is known, and then apply that knowledge on an application where it isn't.

Compiling Your C Code to .NET - Part 1

17 Dec 2019 by Alexandre Bencz

With this new OrangeC/C++ compiler back-end, you can compile your C code to .NET

Compiling Your C Code to .NET - Part 2

14 Dec 2019 by Alexandre Bencz

With this new OrangeC/C++ compiler back-end, you can compile your C code to .NET.

XML

ASM

C++

The Art of Win32 Shellcoding

6 Feb 2012 by AmrThabet

How to write a reliable shellcode on win32, how to bypass the obstacles that you will face in writing a win32 shellcode and how to implement your shellcode into Metasploit

ASM

Windows

Win32

Multiple Precision Arithmetic: Sum Algorithm

11 Jun 2022 by Andrea Simonassi

The simplest multiple precision sum algorithm

Multiple Precision Arithmetic: Subtraction Algorithm

11 Jun 2022 by Andrea Simonassi

A simple subtraction algorithm for multiple precision arithmetic

Multiple Precision Arithmetic: A Multiplication Algorithm

11 Jun 2022 by Andrea Simonassi

The first and simplest of the multiplication algorithms, fast enough to multiply not too large numbers

InjLib - A library that implements remote code injection for all Windows versions

7 Nov 2011 by Antonio Feijao

A library that implements remote code injection for all Windows versions.

How to develop your own Boot Loader

23 Jul 2009 by Apriorit Inc, Alex Kolesnyk

This article describes the first steps in low-level programming on the example of developing of simple boot loader

Service Hiding

8 Dec 2009 by Apriorit Inc, Eugene Wineblat

In this article, we continue investigation in the field of hiding application in the system. This article will tell where Windows OS stores the services and how uses them. We’ll discuss how this knowledge can be applied to finding our custom service and hiding it.

7-Segment Display Multiplexing Control with Parallel Port and x86 Assembly

15 Aug 2012 by Arman Aşçı

Time division multiplexing between 6 x 7-Segment displays control with Parallel Port and x86 assembly.

ASM

parallel

Boot Into Your Own Hello World Application

23 Jul 2008 by arnavguddu

Here I will present a simple "Hello World" application that you can boot into from Floppy Drive, like an Operating System.

ASM

Writing a boot loader in Assembly and C - Part 2

16 Oct 2013 by AshakiranBhatter

Reading the contents of a floppy disk using BIOS interrupts and Services.

Writing a 16-bit dummy kernel in C/C++

13 Mar 2014 by AshakiranBhatter

Understanding FAT file system and kernel programming in C/C++

Writing a boot loader in Assembly and C - Part 1

20 Apr 2015 by AshakiranBhatter

How to boot a floppy image with your own hand written code in C and Assembly

Inject your code to a Portable Executable file

27 Dec 2005 by Ashkbiz Danehkar

This article demonstrates five steps to inject your code in a portable executable (EXE, DLL, OCX,...) file without recompiling source code.

Memory Analyzer x86, 32/64-bit & a Free Detour

29 Aug 2014 by Asif Bahrainwala

Detect memory leaks

A Simple C++ Profiler on x64

5 Aug 2014 by Babu_Abdulsalam

A Simple Profiler for C++ apps on x64 platform

Digging into .NET Object Allocation Fundamentals

29 Sep 2014 by Ben M Watson

Understand exactly what happens during object allocation in .NET, why it's extremely efficient in the common case, and how to trigger slower code paths

Why Learn Assembly Language?

28 Jun 2010 by bjames02

An article explaining the benefits of learning assembly language

ASM

Linux

Architect

Design and Document your Code using PDL (Programming Design Language)

26 Jun 2010 by bjames02

Learn the benefits of using this simple technique to design and document your code

ASM

Architect

How to Turn MacroAssembler into a High Level Language

9 Sep 2021 by Carles Cortés

Macros to help assembler programmers to improve source code

MASM

assembler

ASM

C# Open Source Managed Operating System - Quick View Under the Hood

3 Jul 2011 by Chad Z. Hower aka Kudzu

A quick view under the hood of Cosmos and how it works

Visual Studio X86 Assembly Debugger (C# Open Source Managed Operating System)

4 Jul 2011 by Chad Z. Hower aka Kudzu

Several users have written to me requesting information on the new Cosmos X86 assembly level debugger. Because of the great interest I have written this short preview article.

HWA: Hardware Abstraction for Microcontrollers

26 Aug 2015 by Christophe Duparquet

This article introduces a hardware abstraction tool for microcontroller programming.

Nightmare on (Overwh)Elm Street: The 64-bit Calling Convention

13 May 2017 by CMalcheski

64-bit calling convention

Direct X and Pure Assembly Language: Doing What Can't be Done - Part II

14 Jun 2017 by CMalcheski

Part II - Laying the Foundation for the Migration to Assembly

Image Blending in Windows - an Assembly Language Approach

4 Oct 2017 by CMalcheski

Ditching the slowdowns and applying a little elbow grease can create dramatic speed improvements in GDI image blending.

DirectX and Pure Assembly Language: Doing What Can't be Done - Part IV(a)

15 Sep 2017 by CMalcheski

Initializing DirectX

Fast Circle Coordinate Mapping and Color Wheel Creation: Part 2 – Code

26 May 2019 by CMalcheski

Part 1 of this article discussed an algorithm for addressing all pixels within a circle with surgical precision, optionally expanded to filling in those pixels as required to create a color wheel; this is part 2 of 2, covering the actual implementation.

DirectX and Pure Assembly Language: Doing What Can't be Done - Part I

8 Jun 2017 by CMalcheski

How to Create a Complete DirectX Game in Assembly Language

DirectX and Pure Assembly Language: Doing What Can't be Done - Part III

10 Jul 2017 by CMalcheski

App Initialization and Main Window Creation

DirectX and Pure Assembly Language: Doing What Can't be Done - Part IV(b): the Full DirectX App

26 Jun 2018 by CMalcheski

A Full DirectX Sample Application Created in Pure Assembly Language

Dynamic Load .NET Assembly

10 Oct 2013 by Code Artist

Example implementation of dynamic assembly loading in C#

ASM

.NET

Implementing Bubble Sort with SSE2

19 Feb 2008 by codekaizen

How much faster will implementing "the generic bad algorithm" in SSE2 make it?

Discussing MasterCard’s OpenAPI platform with business leader Dave Butler

4 Nov 2013 by CodeProject

Dave Butler, VP and Senior Business Leader at MasterCard, offers developers insight into the company’s worldwide OpenAPI platform.

ASM

Mobile

Windows

artificial-intelligence

X86/ARM Emulator

1 May 2014 by codestarman

X86/ARM emulator written using C++ and assembler for the .NET environment.

ASM

C++

.NET

A Windows Phone 8 Run Tracking App in 100 Lines of Code

4 Jan 2013 by Colin Eberhardt

This article describes the development of a Windows Phone 8 Run Tracking application that uses a number of the new Windows Phone 8 features.

ASM

Windows-Phone-8

Silverlight

King MM - The Joys of a Harmony-less Life - Part 1, PIC32MM "Hello World!"

7 Jul 2018 by CPallini

Programming Microchip PIC32MM microcontrollers in C++ and assembly

Being 'The Compiler': AES-128 Cipher for 8051, Assembly Implementation

14 Nov 2019 by CPallini

An assembly implementation of the AES-128 cipher algorithm for the 8051 microcontroller

ASM

AES

cryptography

Hook Interrupts and Call Kernel Routines in User Mode

20 May 2009 by cyb70289

Inject user mode routine into kernel space and execute

I/O port sniffer

22 Jul 2010 by cyb70289

An I/O port sniffer using hardware debug registers.

Powerful x86/x64 Mini Hook-Engine

10 Apr 2008 by Daniel Pistelli

A powerful x86/x64 Hook-Engine

Using Static Buffers to Improve Error Reporting Success

2 Jun 2015 by David A. Gray

Use static buffers to guarantee that error message reporting succeeds, even when token replacement is required, and memory is low.

Collision Proof Shared String Resources

12 Jul 2016 by David A. Gray

Share Win32 string resources without the risk of conflicting resource IDs

sprintf_s: Speed Bumps Ahead

19 Jan 2016 by David A. Gray

This article documents issues that I have identified in the new secure overloads of the CRT buffered print routines.

The Improved Resource String Generator in Action: Thou Shalt Eat Thine Own Dog Food, and Like It!

12 Jul 2016 by David A. Gray

The Excel powered resource generator, version 2, is vastly improved and better documented.

Event Tracing for Windows: Reducing Everest to Pike's Peak

8 Jun 2017 by David A. Gray

Historically, ETW has been portrayed as having a very steep learning curve, along the lines of the effort required to summit Everest. Realizing its potential value, I set about to reduce the effort to that required to summit Pike's Peak.

Accessing Windows API with Plain x64 Assembly Language

7 Oct 2016 by digital performance

This article shows how to access Windows API with plain x64 assembly programming language (MASM style). It shall also give an overview, how to apply some programming techniques like OOP and multithreading on a low level.

How to invoke C++ member operations from inline-assembler code segments

19 Sep 2005 by Doga Arinir

Calling C++ operations from assembler code using member function pointers.

Member Function Pointers and the Fastest Possible C++ Delegates

5 Apr 2005 by Don Clugston

A comprehensive tutorial on member function pointers, and an implementation of delegates that generates only two ASM opcodes!

A Platform for Unrestricted Low-level Hardware Programming and Experiments (NakedCPU)

9 Aug 2012 by Dr. APo

This article presents an experimental platform consisting of two computers to conduct hardware programming and research, unrestricted by any Operating System.

ASM

C++

Dev

A Note on How Functions are Called

28 Jun 2023 by Dr. Song Li

This is a note on how compilers implement function calls to pass the parameters to and get the return value from the called functions.

ASM.Net - x86 Emulation

26 Dec 2011 by Drag0nHunter

ASM.Net a assembly x86 emulator which emulates the language the managed way

The Beginners Guide to Codecaves

27 Aug 2007 by Drew_Benton

This is a complete beginners guide to codecaves that covers the main topics of: what a codecave is, what a codecave can be used for, and how to use a codecave.

Bird Programming Language: Part 1

1 Jan 2013 by Dávid Kocsis

A new general purpose language that aims to be fast, high level and simple to use.

ASM

vectorization

Bird Programming Language: Part 2

1 Jan 2013 by Dávid Kocsis

A new general purpose language that aims to be fast, high level and simple to use. (I renamed it from Anonymus)

ASM

Bird Programming Language: Part 3

1 Jan 2013 by Dávid Kocsis

A new general purpose language that aims to be fast, high level and simple to use.

ASM

Detect if your program is running inside a Virtual Machine

4 Apr 2005 by Elias Bachaalany

An article showing how you can programmatically check if your code is running inside a virtual machine (such as VPC or VMWare).

Using SSE/SSE2 for optimization

3 Oct 2004 by f2

A beginner's introduction to one of the optimization methods.

Bypassing Windows XP Logon Password using bootkit

5 May 2010 by fhrdina

An article on Windows XP logon process modification

ASM

Windows

virtualization

A simple method to display a transparent PNG file

8 Sep 2008 by flyhigh

Introducing a simple method to display a transparent PNG file.

Disable Ctrl+Alt+Del Windows XP

12 Sep 2008 by gabrielmaldi

A very simple way of doing it.

Implementing a Universal Turing Machine With Only mov Instructions

5 Feb 2017 by Gregory Morse

UTM based on mov is Turing-complete paper x86 and x86-64

Code Injection into Running Linux Application

12 Feb 2009 by Gregory Shpitalnik

How to inject some code into running Linux application

C++ Data-Archiver Class (MASM Implementation)

18 Jul 2011 by Hubert Haien

Presentation of a memory-wrapper class written in ASM that provides methods to organize and serialize data. Comes with its own 32 bit algorithm.

How to create your own virtual machine

10 May 2012 by icemanind

This article takes you through a step-by-step process of creating your own virtual machine.

How to create your own virtual machine -- Part 2

27 Feb 2010 by icemanind

This article takes you through a step-by-step process of creating your own virtual machine.

Windows Live Messenger Plug-in Development Bible

3 Nov 2008 by IndioX86

An article explaining several Win32 reverse engineering techniques applied to Live Messenger research and plug-in development.

Sort Numbers using a Fenwick Tree (with Help from ChatGPT)

25 Dec 2022 by InvisibleMedia

This article is written right after a new conversation with ChatGPT (chat.openai.com). This conversation is the next step in writing a new algorithm that sorts numbers into o(n). And, ChatGPT says that it is possible to compute a sorting algorithm to have the complexity in o(n).

ASM

Euclidean Division of Polynomials

18 Apr 2023 by InvisibleMedia

This article describes how to divide two polynomials and shows the source code to calculate this division. There is also code to add, subtract and multiply two polynomials.

Visual Basic 6.0: A giant more powerful than ever

14 Jan 2014 by ISpliter

When discussing VB6, we should look at the reality of the situation and not on preconceived opinions. New source code projects are made daily in Visual Basic 6.0. The paper proposes the reintroduction of Visual Basic 6.0 on the market, in parallel with Visual Studio line.

Why is the digital I/O in Arduino slow and what can be done about it?

16 May 2014 by Jan Dolinay

This article explains why the Arduino digital I/O functions are slow and compares them with faster implementation used in Wiring framework.

Fast digital I/O for Arduino

9 Mar 2015 by Jan Dolinay

This article describes faster but still easy-to-use version of digital I/O for Arduino

Arduino-compatible software library for FRDM-KL25Z board

17 Feb 2015 by Jan Dolinay

This article describes software library for the FRDM-KL25Z board which allows writing programs for this board using the Arduino API.

Grafting Compiled Code: Unlimited Code Reuse

7 Mar 2008 by Jeffrey Walton

Add functionality to a project using existing compiled machine code.

Learning Binary and Hexadecimal

24 Nov 2014 by Jeremy Falcon

A beginner's guide to talking like a computer.

ESJ: Extremely Simple JSON for C++

22 Sep 2015 by Jerry Evans

Adding cross-platform round-trip JSON serialization to C++ classes

.NET CLR Injection: Modify IL Code during Run-time

7 Aug 2014 by Jerry.Wang

Modify methods' IL codes on runtime even if they have been JIT-compiled, supports release mode / x64 & x86, and variants of .NET versions, from 2.0 to 4.5.

Get Calling Assembly from StackTrace

1 Jul 2014 by JIANGWilliam

This article introduces a handy way to get the calling Testing Assembly from a called Assembly

STM32 Discovery: The Basics - Creating a Project

25 Jan 2011 by jmlb

Creating a project with Keil for a 32KB program space

Point Inside 3D Convex Polygon in MASM Assembly

4 Mar 2016 by John Jiyang Hou

An algorithm to determine if a point is inside a 3D convex polygon for a given polygon vertices in MASM Assembly

MASM

ASM

Visual-Studio

Thunk and its uses

18 Jul 2008 by John_Tang

An introduction to thunk and its uses in callback handling, interface marshaling, and supporting multiple inheritance in C++.

Generic XOR-Coded Lists

4 Mar 2016 by JorgeLuisOrejel

This article is based on Chapter 2 of my unpublished textbook “Applied Algorithms and Data Structures.”

Finally, 64-Bit Delphi is here and with 64-Bit BASM!

3 Oct 2011 by Jose A Pascoa

Using Borland Assembler Language in 32-bit and 64-bit Delphi programs.

Mixing .NET and Assembly Language in a standalone 64-bit exe

17 Oct 2011 by Jose A Pascoa

This article deals with building a standalone 64-bit .NET .exe file that is statically linked with an Assembly Language compiled object file.

MASM - Stack Memory Alignment

9 Sep 2016 by Jose A Pascoa

SIMD instruction sets may expect a special alignment of memory, but when that memory is on the stack MASM does not provide alignment facilities.

Need for Speed - C++ versus Assembly Language

4 May 2017 by Jose A Pascoa

Impossible to beat the C++ compiler?

The Quest for the SSDTs

20 Jul 2017 by Jose A Pascoa

The much talked about Kernel data structures

64-bit Structured Exception Handling (SEH) in ASM

1 Nov 2017 by Jose A Pascoa

Rolling up a practical solution

ASM

C++

Windows

Embedding .PNG Images into a RichEdit Document

11 Apr 2019 by Jose A Pascoa

Although most Windows programmers have already used the RichEdit Control, many of them are not aware of all its capabilities. One such capability is image embedding.

Introduction Into Windows Anti-Debugging

18 Sep 2008 by Joshua Tully

A brief introduction into Windows anti-debugging techniques.

An Anti-Reverse Engineering Guide

9 Nov 2008 by Joshua Tully

A look into what goes into the area of preventing reverse engineering, and gives developers some functions and ideas about preventing reversing engineering of their programs.

Abstracting the ORM Framework

8 Jul 2013 by JP van Mackelenbergh