Installation of DNSrr Tool on Kali Linux OS

Step 1: Open 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 DNSrr using the following command. In this directory, we will complete the installation of the DNSrr tool.

mkdir DNSrr 

Step 3: Now switch to the DNSrr directory using the following command.

cd DNSrr 

Step 4: Now you have to install the tool. You have to clone the tool from Github.

git clone https://github.com/A3h1nt/Dnsrr

Step 5: The tool has been downloaded successfully in the DNSrr directory. Now list out the contents of the tool by using the below command.

ls

Step 6: You can observe that there is a new directory created of the DNSrr tool that has been generated while we were installing the tool. Now move to that directory using the below command:

cd Dnsrr

Step 7: Once again to discover the contents of the tool, use the below command.

ls

Step 8: Run the Bash Script using the following command.

./dnsrr.sh --help

DNS enumeration is the process of locating all the DNS servers and their corresponding records for an organization. In some cases, Penetration Tester or Bug Bounty Hunter cannot bypass actual DNS addresses. It is mask under the CDN (Content Delivery Network) like Cloudflare, Google CDN, StackPath, etc. So to get the crucial information for DNS, an automated script is designed in the Bash Language named DNSrr. DNSrr tool performs various operations like forwarding DNS Lookup Bruteforce, Reverse DNS Lookup BruteForce, etc. DNS Enumeration can reveal the size of the enterprise of the target organization which can translate to the potential size of the attack surface.