gcat - A PoC backdoor that uses Gmail as a C&C server

项目说明

Gcat

A stealthy Python based backdoor that uses Gmail as a command and control 服务端

This project was inspired by the original PoC 代码 from Benjamin Donnelly

This is PoC code...

... that was released for orginazations to test their defenses against these type of attacks. In order to detect them see projects like RITA.

For a more up to date and maintained of this project see GDog

Setup

For this to work you need:

A Gmail account (Use a dedicated account! Do not use your personal one!)

Turn on "Allow less secure apps" under the security settings of the account

You may also have to enable IMAP in the account settings

This repo contains two files:

a script that's used to enumerate and issue commands to a clients

the actual backdoor to deploy

In both files, edit the and with the username and password of the account you pre setup.

You're probably going to want to compile into an executable using Pyinstaller

Note: It's recommended you compile implant.py using a 32bit Python installation

Usage

Once you' the backdoor on a couple of systems, you can check a clients using the list command:

The output is a UUID string that uniquely identifies the system and the OS the implant is running on

Let's issue a command to an implant:

Here we are telling to execute , the script then outputs the that we can use to retrieve the output of that command

Lets get the results!

That's the gist of it! But you can do much more as you can see from the usage of the script! ;)

To Do

Multi-platform support

~~Command to upload files~~

Transport crypto & obfuscation

项目信息

开发语言：Python

Star 数：1351

技术要点

该项目属于黑客技术方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕A PoC backdoor that uses Gmail as a C&C 服务端展开，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。