Jormungandr - Jormungandr is a kernel implementation of a COFF l

项目说明

Jormungandr

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Jormungandr is a kernel implementation of a COFF loader, allowing kernel de to load and execute their COFFs in the kernel.
The only supported type of COFF is an x64 kernel COFF (meaning, a COFF that uses functions from either NTOSKRNL or SSDT). This project is not supported to run with VBS enabled because it is using pools with execute permissions but this project should work for any of Windows starting from Windows 7.

If you are unfamiliar with COFF and COFF loading, please refer to TrustedSec's blog post about COFF loaders.

Basic Usage

To communicate with the driver, you can use and compile the example file with CMake.
This is an example of the most basic usage:

To run and execute the existing example, all you have to do is create your own COFF or use the example:

!example

Writing kernel COFFs

To write a kernel COFF, create a new C file and import the functions you want as follows:

Replace the <FUNCTION_RETURN_TYPE> with the return type of the function you want, the <LIBRARY> can be either ntoskrnl or ntdll the rest is the signature of the function. After the function is imported, you can use it the way you are used to writing code.

To build the COFF, use mingw with the following command:

Setup

Building the client

To compile the client, you will need to install CMake and Studio 2022 installed and then just run:

Building the driver

To compile the project, you will need the following tools:

Clone the repository and build the driver.

Testing

To test it in your testing en run those commands with elevated cmd:

After rebooting, create a service and run the driver:

Debugging

To debug the driver in your testing en run this command with elevated cmd and reboot your computer:

After the reboot, you can see the debugging messages in tools such as DebugView.

Resources

Contributions

Thanks a lot to those people that contributed to this project:

项目信息

开发语言：C++

Star 数：241

技术要点

该项目属于红蓝攻防方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕Jormungandr is a kernel implementation of a COFF loader, allowing kernel developers to load and execute their COFFs in the kernel. 展开，提供了可运行的实现，对理解相关安全机制、工具原理与攻防技术具有较高的研究价值。

从技术实现角度看，此类项目的核心在于对底层原理的深入理解与工程化落地。开发者在研究过程中可以结合官方文档与社区讨论，梳理项目的初始化流程、核心模块职责与数据流转，逐步掌握其中的技术细节与设计思路。

使用与学习建议

1. 下载源码压缩包，解压到本地环境。

2. 根据项目类型准备对应的运行环境与依赖。

3. 按照 README 中的步骤完成配置与部署。

4. 在隔离的测试环境中运行验证，避免影响生产系统。

免责声明

本资源来源于开源社区，仅供安全研究、技术学习与合法授权范围内的攻防演练使用，请勿用于任何非法或侵害他人权益的用途。使用本项目产生的一切后果由使用者自行承担。