dnsenum
dnsenum Description
Dnsenum is a multithreaded perl script to enumerate DNS information of a domain and to discover non-contiguous ip blocks. The main purpose of Dnsenum is to gather as much information as possible about a domain. The program currently performs the following operations:
- Get the host's addresses (A record).
- Get the namservers (threaded).
- Get the MX record (threaded).
- Perform axfr queries on nameservers and get BIND versions(threaded).
- Get extra names and subdomains via google scraping (google query = "allinurl: -www site:domain").
- Brute force subdomains from file, can also perform recursion on subdomain that have NS records (all threaded).
- Calculate C class domain network ranges and perform whois queries on them (threaded).
- Perform reverse lookups on netranges (C class or/and whois netranges) (threaded).
- Write to domain_ips.txt file ip-blocks.
This program is useful for pentesters, ethical hackers and forensics experts. It also can be used for security tests.
Homepage: https://github.com/SparrowOchon/dnsenum2
Author: Filip Waeytens, tix tixxDZ
License: GPLv2
dnsenum Help
Usage:
dnsenum [Options] <domain>
Note: If no -f tag supplied will default to /usr/share/dnsenum/dns.txt or the dns.txt file in the same directory as dnsenum.pl.
Options:
GENERAL OPTIONS:
--dnsserver <server>
Use this DNS server for A, NS and MX queries.
--enum Shortcut option equivalent to --threads 5 -s 15 -w.
-h, --help Print this help message.
--noreverse Skip the reverse lookup operations.
--nocolor Disable ANSIColor output.
--private Show and save private ips at the end of the file domain_ips.txt.
--subfile <file> Write all valid subdomains to this file.
-t, --timeout <value> The tcp and udp timeout values in seconds (default: 10s).
--threads <value> The number of threads that will perform different queries.
-v, --verbose Be verbose: show all the progress and all the error messages.
GOOGLE SCRAPING OPTIONS:
-p, --pages <value> The number of google search pages to process when scraping names,
the default is 5 pages, the -s switch must be specified.
-s, --scrap <value> The maximum number of subdomains that will be scraped from Google (default 15).
BRUTE FORCE OPTIONS:
-f, --file <file> Read subdomains from this file to perform brute force. (Takes priority over default dns.txt)
-u, --update <a|g|r|z>
Update the file specified with the -f switch with valid subdomains.
a (all) Update using all results.
g Update using only google scraping results.
r Update using only reverse lookup results.
z Update using only zonetransfer results.
-r, --recursion Recursion on subdomains, brute force all discovered subdomains that have an NS record.
WHOIS NETRANGE OPTIONS:
-d, --delay <value> The maximum value of seconds to wait between whois queries, the value is defined randomly, default: 3s.
-w, --whois Perform the whois queries on c class network ranges.
**Warning**: this can generate very large netranges and it will take lot of time to perform reverse lookups.
REVERSE LOOKUP OPTIONS:
-e, --exclude <regexp>
Exclude PTR records that match the regexp expression from reverse lookup results, useful on invalid hostnames.
OUTPUT OPTIONS:
-o --output <file> Output in XML format. Can be imported in MagicTree (www.gremwell.com)
dnsenum Usage Example
To enumerate DNS information of the domain (miloserdov.org) and to discover non-contiguous ip blocks:
dnsenum miloserdov.org
Don’t do a reverse lookup (–noreverse) and save the output to a file (-o mydomain.xml) for the domain example.com:
dnsenum --noreverse -o mydomain.xml example.com
How to install dnsenum
Installation on Kali Linux
The program is pre-installed on Kali Linux.
sudo apt install dnsenum
Installation on Debian, Linux Mint, Ubuntu
sudo apt install cpanminus git clone https://github.com/SparrowOchon/dnsenum2 cd dnsenum2 make sudo make install
Installation on BlackArch
The program is pre-installed on BlackArch.
sudo pacman -S dnsenum
dnsenum Screenshots
dnsenum Tutorials
Coming soon…
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