Windows Dynamic-Link Library Injector

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Introduction

Dll-Injector is a Windows dynamic-link library injection tool written in C++20. It can inject a .dll file into a running process by searching its window title or create a new process with an injection.

Getting Started

Warning

The project does not contain building configuration files, the source code can be built manually with Visual Studio 2022.

Prerequisites

The project need to configure on/for Windows 32-bit.

Usage

Dll-Injector [-f <proc-path> | <win-title>] <dll-path>

Inject a Dynamic-Link Library Into a Running Process

To inject a .dll file into a running process, you need to specify the window title of the target process and the path of the .dll file. If dll-path is a relative path, it must be relative to the Dll-Injector.exe.

Dll-Injector <win-title> <dll-path>

For example, inject the dllmain_msg.dll (assume it is in the same directory as Dll-Injector) into Windows Calculator:

Dll-Injector Calculator dllmain_msg.dll

Create a New Process With an Injection

To create a new process with an injection, you must enable the -f option firstly and then specify the paths of the target process and the .dll file. If dll-path is a relative path, it must be relative to the process file.

Dll-Injector -f <proc-path> <dll-path>

Documents

Code comments follow Doxygen specification.

Class Diagram

classDiagram

class Injector {
    <<interface>>
    +Inject()
}

class RunningInjector {
    -string win_title
    -string dll_path
}

Injector <|.. RunningInjector

class StartupInjector {
    -string proc_path
    -string dll_path

    +Running() bool
    +Terminate()
}

Injector <|.. StartupInjector

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License

Distributed under the MIT License. See LICENSE for more information.