CTF: Instalasi CTFd di Ubuntu 22.04

Sumber: https://nopresearcher.github.io/Deploying-CTFd/

Spec:

• VirtualBox
• Ubuntu 22.04
• Memory 3G
• Core 2

Basic

sudo su
apt update
apt install net-tools

Setup user ctfd

# setup user ctfd
adduser ctfd  # masukan password
usermod -aG sudo ctfd

Aktifkan firewall,

# UFW Firewall
ufw allow openssh
ufw allow http
ufw allow https
ufw enable

Install python & apps pendukung

apt update
apt upgrade -y   # optional

apt install -y python3-pip python3-dev build-essential libssl-dev libffi-dev python3-setuptools nginx git
pip3 install pipenv

Install CTFd

# install CTFd
cd /var/www
git clone https://github.com/CTFd/CTFd.git

su ctfd
sudo chown -R ctfd:www-data /var/www/CTFd
cd /var/www/CTFd

# Create a pipenv to run CTFd in
pipenv install --python 3.6
pipenv shell
./prepare.sh

Testing

sudo ufw allow 5000
gunicorn --bind 0.0.0.0:5000 'CTFd:create_app()'
http://www.yourdomain.com:5000

Setup enviroment, contoh

• single core
• worker 3
• keep-alive 2

# identify the pipenv virtual environment for use in unit file
pipenv --venv
/home/ctfd/.local/share/virtualenvs/CTFd-rOJbThUf

# Create unit file
sudo vim /etc/systemd/system/ctfd.service

[Unit]
Description=Gunicorn instance to serve ctfd
After=network.target

[Service]
User=ctfd
Group=www-data
WorkingDirectory=/var/www/CTFd
Environment="PATH=/home/ctfd/.local/share/virtualenvs/CTFd-rOJbThUf/bin"
ExecStart=/home/ctfd/.local/share/virtualenvs/CTFd-rOJbThUf/bin/gunicorn --bind unix:app.sock --keep-alive 2 
--workers 3 --worker-class gevent 'CTFd:create_app()' --access-logfile '/var/log/CTFd/CTFd/logs/access.log' 
--error-logfile '/var/log/CTFd/CTFd/logs/error.log'

[Install]
WantedBy=multi-user.target

Referensi

• https://nopresearcher.github.io/Deploying-CTFd/