CTFsubmitter - A flag submitter service with distributed attacker

项目说明

CTF submitter

While playing ruCTFe 2015 some of our "attack" scripts didn't work as expected, flooding the game infrastructure with invalid flags (sorry guys!).
We decided then to write a centralized "flag submit" service with a rest api which would act as a filter and be able to tell us if some of the attack
scripts are submitting too many invalid flags.
In the end it worked out pretty well! :)

Please keep in mind that this code was written in a hurry, planning to use it locally during ctfs: don't expect it to be (perfect || secure || bug free).
If you find a bug, add a new feature please contribute with a pull request.
If you like it or use it feel free to drop us a line ;)

!stats screenshot

Submitter service

This webservice is responsible for receiving flags, and storing them togheter with statistics inside the DB.
Please start this one first to setup the database the first time.
The service is based on bottle.py and we used cherrypy for our deploy:

You will also need an instance of the "worker" which will submit the flags to the game infrastructure:

Requirements

+ bottle
+ pymongo>=3.0

for RuCTFe:

+ pwntools

for iCTF:

+ ictf

It was tested with mongodb 2.6.x

nginx

It is ad to put an nginx in front of the submitter service, look at for an example config.

Stats service

you will need another since right now motor doesn't wrap pymongo 3

Requirements

+ tornado
+ motor

TODO

+ cleanup and "plugin" handling
+ complete service/team statistics
+ management script
+ tests
+ better log message handling
+ better handling of exceptions
+ blacklist ip/user temporarily if too many wrong flags are submitted
+ rewrite the stats frontend since it's just plain jquery
+ reorganize the code base, and allow the stats service and logger to use a different backend other than mongodb
+ add cold restart button in case of failures of the service
+ add a raw socket interface to submit flags
+ possibly add authentication to use the service not only locally

项目信息

开发语言：Python

Star 数：73

技术要点

该项目属于CTF思路方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕A flag submitter service with distributed attackers for attack/defense CTF games.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。