Fierce Domain Scanner Released – Domain Reconnaissance Tool


Fierce domain scan was born out of personal frustration after performing a web application security audit. It is traditionally very difficult to discover large swaths of a corporate network that is non-contiguous. It’s terribly easy to run a scanner against an IP range, but if the IP ranges are nowhere near one another you can miss huge chunks of networks.

Fierce

First what fierce is not. Fierce is not an IP scanner, it is not a DDoS tool, it is not designed to scan the whole internet or perform any un-targeted attacks. It is meant specifically to locate likely targets both inside and outside a corporate network. Only those targets are listed. No exploitation is performed. Fierce is a reconnaissance tool. Fierce is a PERL script that quickly scans domains (usually in just a few minutes, assuming no network lag) using several tactics.

First it queries your DNS for the DNS servers of the target. It then switches to using the target’s DNS server (you can use a different one if you want using the -dnsserver switch). Fierce then attempts to dump the SOA records for the domain in the very slim hope that the DNS server that your target uses may be misconfigured.

Once that fails (because it almost always will) it attempts to “guess” names that are common amongst a lot of different companies. Don’t ask me where I got the list, it’s just a list of names that id and I have seen all over the place. I thought about adding a dictionary to this, but I think that would take a lot longer, and given that very few of the words are dictionary words I don’t think this would add a lot of value.

The syntax is something like this:

You can download Fierce Domain Scanner here:

fierce.pl – Download host list: hosts.txt

More info here:

Fierce Domain Scanner

Written by RSnake with input from id, Vacuum and Robert E Lee.

Posted in: Hacking Tools, Web Hacking

, ,


Latest Posts:


HiddenWall - Create Hidden Kernel Modules HiddenWall – Create Hidden Kernel Modules
HiddenWall is a Linux kernel module generator used to create hidden kernel modules to protect your server from attackers.
Anteater - CI/CD Security Gate Check Framework Anteater – CI/CD Security Gate Check Framework
Anteater is a CI/CD Security Gate Check Framework to prevent the unwanted merging of filenames, binaries, deprecated functions, staging variables and more.
Stardox - Github Stargazers Information Gathering Tool Stardox – Github Stargazers Information Gathering Tool
Stardox is a Python-based GitHub stargazers information gathering tool, it scrapes Github for information and displays them in a list tree view.
ZigDiggity - ZigBee Hacking Toolkit ZigDiggity – ZigBee Hacking Toolkit
ZigDiggity a ZigBee Hacking Toolkit is a Python-based IoT (Internet of Things) penetration testing framework targeting the ZigBee smart home protocol.
RandIP - Network Mapper To Find Servers RandIP – Network Mapper To Find Servers
RandIP is a nim-based network mapper application that generates random IP addresses and uses sockets to test whether the connection is valid or not with additional tests for Telnet and SSH.
Nipe - Make Tor Default Gateway For Network Nipe – Make Tor Default Gateway For Network
Nipe is a Perl script to make Tor default gateway for network, this script enables you to directly route all your traffic from your computer to the Tor network.


One Response to Fierce Domain Scanner Released – Domain Reconnaissance Tool

  1. naxxtor March 14, 2007 at 8:12 pm #

    I was so close to writing this script last night to emulate an external zone transfer. Nice work.

    If you want an nice target to try this out on, try a university :) They tend to have all sorts of interesting things hooked up, and most of them have giant netblocks too.