Installation of Altdns tool in Kali Linux
Step 1: Fire up your Kali Linux terminal and move to Desktop using the following command.
cd Desktop
Step 2: You are on Desktop, now create a new directory called Altdns using the following command. In this directory, we will complete the installation of the Altdns tool.
mkdir Altdns
Step 3: Now switch to Altdns directory using the following command.
cd Altdns/
Step 4: Now you have to install the tool. You have to clone the tool from GitHub.
git clone https://github.com/infosec-au/altdns
Step 5: The tool has been downloaded successfully in the Altdns directory. Now list out the contents of the tool by using the following command.
ls
Step 6: There is a new directory created named altdns. Move to that directory using the following command.
cd altdns/
Step 7: Once again to discover the contents of the tool, use the below command.
ls
Step 8: Install the essential requirements using the following command.
pip3 install -r requirements.txt
Step 9: Check the help menu page of altdns tool to get a better understanding of the tool. Use the following command.
python3 altdns --help
Altdns – Subdomain discovery through alterations and permutations
Subdomain Enumeration is the non-negligible step of Penetration Testing. Every Tester has to Enumerate Subdomains for different phases. Several scripts are automated to find subdomains of the specified target, but Altdns is a superb security tool that can discover and explore subdomains. Altdns is a python script or python language-based tool. Altdns has the feature to generate permutation, alteration, and mutations of subdomains of the specified target domain. The Tester can use these generated names for DNS lookups. Altdns is an open-source tool and free to use. Altdns tool works efficiently in the phases of Information gathering, Reconnaissance subdomains, and finding subdomains from even HTTPS secured websites. Altdns tool generates two lists of subdomains as a result. The 1st list is a collection of identified subdomains, and the 2nd list s the group of possible words used as a subdomain like testing, status backup, etc.
Note: Make Sure You have Python Installed on your System, as this is python-based tool. For more information, refer to the article Python Installation Steps on Linux