Install alterx on Ubuntu 24.04

The alterx is a command line tool for generating subdomains to find potential subdomain misconfigurations or vulnerabilities. During a penetration test, security testers can use alterx to create variations of subdomain to discover hidden resources. This tutorial explains how to install alterx on Ubuntu 24.04.

Install alterx

Get the latest version of alterx release from GitHub and assign it to variable:

ALTERX_VERSION=$(curl -s "https://api.github.com/repos/projectdiscovery/alterx/releases/latest" | grep -Po '"tag_name": "v\K[0-9.]+')

Run the following command to download archive file from releases page:

wget -qO alterx.zip https://github.com/projectdiscovery/alterx/releases/latest/download/alterx_${ALTERX_VERSION}_linux_amd64.zip

Extract executable from archive file to /usr/local/bin directory:

sudo unzip -q alterx.zip -d /usr/local/bin alterx

We can check alterx version as follows:

alterx --version

Remove unnecessary file:

rm -rf alterx.zip

Testing alterx

To use alterx, run it from the command line with specific options for domain alteration. For example, the command:

alterx -l example.com -silent -limit 10 -pattern "{{word}}.{{suffix}}"

• -l - specifies the base domain for generating variations.
• -silent - runs the tool without verbose output.
• -limit - limits the output to a specific number of variations.
• -pattern - defines the pattern for variations.

Output example:

qa.example.com
market.example.com
faq.example.com
private.example.com
role.example.com
lab.example.com
live.example.com
shop.example.com
builds.example.com
administrator.example.com

Uninstall alterx

If you want to completely remove alterx, delete the related file:

sudo rm -rf /usr/local/bin/alterx

We can also remove alterx configuration directory:

rm -rf ~/.config/alterx