Docker-CTF

My project will help you host a container, running a "CTF-Capture The Flag" event using just 1 click in just 1 second

This is my project using docker software and using containerisation.

My idea is simple: Launch the CTF events on docker container for smooth management and hastle free server setup.

GETTING STARTED

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.

REQUIREMENTS

• Any Linux Distro : I have used RHEL8 - REDHAT ENTERPRISE LINUX VERSION 8
• Any virtualisation tool: I have used Oracle VirtualBox 6.1.4
• Docker software: I have server version 18.09.1
• Docker-compose (because it doesn't come pre-installed with docker)

INSTALLING

• RHEL8 can be installed as an ISO image and then be set up as a new virtual machine using any virtualisation tool like Oracle VirtualBox.
• Run the following command to install Docker-Community Edition

# cd /etc/yum.repos.d/

-> now inside this folder create a .repo file and inside it write the following:

[docker]
baseurl = https://download.docker.com/linux/centos/7/x86_64/stable/
gpgcheck=0

-> now run this command to install Docker-Community Edition

# yum install docker-ce --nobest
# systemctl enable docker
# systemctl start docker

-> now follow the steps to download docker-compose

# curl -L "https://github.com/docker/compose/releases/download/1.25.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
# chmod +x /usr/local/bin/docker-compose

FINAL STEP

Now just get the docker-compose.yml file into your local machine and run the command:

# docker-compose up

And you are good to go!!

Now, right now my program uses static IP and not dynamic.

So after using docker-compose up go to another terminal and run the following commands:

# docker ps -a                           // this will give you the running container list.
# docker inspect <container ID>          // this will give you the IP
# docker attach <webctf container ID>    // go inside webctf container
# cd /var/www/html                       // inside folder where all files are
# vim insert.php                         // check and edit the IP here

Go to your browser, get yourself registered in my database and start your CTF. This is just a prototype and more advance features can be added to it.

1. To connect on the same machine:

Write the IP of ctfweb container in the browser. 
Example-> 172.19.0.3

2. To connect from another machine that is on the same network

Find the IP of the host machine using ifconfig command.
And then in the browser write IP of host machine : port.
Example-> 192.168.0.108:8080

BUILT WITH

• My own docker image:
  • You can get the image at DOCKER HUB.
  • Name of inage is dakshjain09/ctfcontainer
  • Has a client side mysql
  • Has php and major dependencies -> php-common, php-mysql, php-pdo, php-soap, php-xml, php-mysqlnd
  • Has net-tools for basic features like netstat for port numbers and ifconfig for IP
  • Has httpd for hosting apache web server
• Another image of mysql:5.7 to store the data in the databse.
• The link to the docker image is: https://hub.docker.com/r/dakshjain09/ctfcontainer

FEATURES

• The storage/volume where the 'web pages are loaded' and the 'database is stored' is Persistant and not Ephemeral.
• This means that any container if gets corrupted by chance, THE DATA IS NEVER LOST!!
• Simply just attach the volume to a new container and all of the data is back.
• This Container provides you the luxury to host a docker container with just 1 click and also terminate and wipe off everything without even loosing the data.

SCOPE OF IMPROVEMENT

• Right now the IP Address in the php file is static.
• I have to change that to a dynamic one, so that whenever a new IP is alloted to the sql server the webpage gets connected to it easily.
• More advance CTF will be soon added, right now this is just a PROTOTYPE.