https://github.com/gztimewalker/ctf-nc-docker
Run CTF challenges with netcat in one docker container.
https://github.com/gztimewalker/ctf-nc-docker
ctf ctf-challenges ctf-tools docker netcat nodejs-server python3 react xinetd xterm
Last synced: 16 days ago
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Run CTF challenges with netcat in one docker container.
- Host: GitHub
- URL: https://github.com/gztimewalker/ctf-nc-docker
- Owner: GZTimeWalker
- Created: 2021-05-21T13:22:26.000Z (about 4 years ago)
- Default Branch: master
- Last Pushed: 2023-08-05T09:39:30.000Z (almost 2 years ago)
- Last Synced: 2025-04-21T10:17:58.325Z (2 months ago)
- Topics: ctf, ctf-challenges, ctf-tools, docker, netcat, nodejs-server, python3, react, xinetd, xterm
- Language: Python
- Homepage:
- Size: 1.69 MB
- Stars: 41
- Watchers: 1
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# CTF-nc-docker
[English](https://github.com/GZTimeWalker/CTF-nc-docker/blob/master/README.md) | [中文文档](https://github.com/GZTimeWalker/CTF-nc-docker/blob/master/README.zh_cn.md)
## Build and run
After installing docker, clone this repository and run `python generate.py` or `python3 generate.py` in it.
The logs generated during the running can be got from `/var/log/ctf/*.log` and `/var/log/server.log` inside the container. If the attached files download service is enabled, you can view all the challenges and their corresponding ports via `http://{hostname}:{download_port}`. If the web netcat service is enabled, you can connect to it via `http://{hostname}:{download_port}/wnc`. When running the script for the first time, `global.json` will be generated in the current folder, and please operate following the prompts in the script.
The environment includes `python` and `nodejs`, so challenges based on them and binary challenges are supported.
## Configuration
Edit `global.json` for global configuration, and `config.json` in each challenge directory for challenge specific configuration.
### global.json
```json
{
"mirrors_base_url": "mirrors.tuna.tsinghua.edu.cn",
"pypi_index_url": "https://pypi.tuna.tsinghua.edu.cn/simple",
"npm_mirror_url": "http://registry.npmmirror.com/",
"port_range_start": 65100,
"show_download_host": true,
"download_url": "http://localhost:65199",
"download_server": true,
"web_netcat_server": true,
"server_port": 65199,
"show_echo_msg": true,
"show_warn_msg": true,
"resource_limit": {
"enable": true,
"max_memory": "512M",
"max_cpu": "0.5"
}
}
```
- `mirrors_base_url`: Debian mirror source (domain)
- `pypi_index_url`: PyPI package source
- `npm_mirror_url`: NPM package source
- `port_range_start`: The start port for the range of ports for challenges
- `show_download_host`: Show the download host in the challenge echo message
- `download_url`: The download url shown in the challenge echo message
- `download_server`: Whether to enable the download server
- `web_netcat_server`: Whether to enable the web netcat server
- `server_port`: The port of the download server
- `show_echo_msg`: Whether to show the echo message
- `show_warn_msg`: Whether to show the warning message
- `resource_limit`: Configuration for resource limit
- `enable`: Whether to enable resource limit
- `max_memory`: The maximum memory usage
- `max_cpu`: The maximum CPU usage
### config.json
```json
{
"enable": true,
"pip_requirements": [],
"apt_requirements": [],
"all_copy": true,
"launch": "python3",
"args": ["-u", "./src.py"],
"extra_cmd": [],
"copy_files": [],
"echo_msg": ["Write some descr here."],
"download_file_name": "",
"order": 10
}
```
- `enable`: Whether to enable this challenge
- `pip_requirements`: The requirements for pip packages
- `apt_requirements`: Extra apt packages
- `all_copy`: Whether to copy all files in the challenge directory (`config.json` is not included)
- `launch`: The launch command
- `args`: The arguments for the launch command
- `extra_cmd`: The extra commands to run when build the challenge
- `copy_files`: The files to copy to the container (when `all_copy` is false)
- `echo_msg`: The echo message
- `download_file_name`: The file name of the challenge file
- `order`: Specific the order of the challenge (port order)
## Notice
Do not put the dictionary with the same name as the challenge in the same directory!
For more information, please refer to the [CTF-nc-docker 配置指南](https://blog.gztime.cc/posts/2022/ac35dae6) (chinese only).
## Examples
- `tictactoe`
A pwn challenge from Hackergame 2020.
- `calculator_never_overflow`
A math challenge from Hackergame 2020.
- `unboxing_simulator`
A math challenge from Hackergame 2020.
- `cosmic_ray_simulator`
A pwn challenge from Hackergame 2020.
- `self_repeating_repeater`
A misc challenge from Hackergame 2020.
## Images
