Working with DNSrr Tool on Kali Linux OS

Example 1: Zone Transfer

1. In this example, We will be performing Zone Transfer on the target domain w3wiki.org. We have provided the zone detail and the domain detail using the -z tag.

./dnsrr.sh -z ns-1520.awsdns-62.org w3wiki.org

2. In this example, We will be performing Zone Transfer on the target domain zonetransfer.me. We have provided the zone detail and the domain detail using the -z tag.

./dnsrr.sh -z nsztm1.digi.ninja zonetransfer.me

Example 2: Forward Lookup Brute Force

1. In this Example, We are performing Forward Lookup Brute Force on the target domain w3wiki.org. We have used -fb flag along with the domain.

./dnsrr.sh -fb w3wiki.org

Example 3: Reverse Lookup Brute Force

1. In this Example, We are performing Reverse Lookup Brute Force on the target domain w3wiki.org. We have used -rb tag along with the domain.

./dnsrr.sh -rb w3wiki.org

Example 4: Explain a Particular Option

1. In this Example, We are listing the detailed information about the various options offered by this tool. -x tag is used along with the option.

./dnsrr.sh -x rb

2. In the below Screenshot, We are listing the detailed information about the Reverse DNS Lookup Brute Force.

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.