dnsenum - Multithreaded perl script to enumerate DNS information

Multithreaded perl script to enumerate DNS information of a domain and to discover non-contiguous ip blocks.

  • Get the host’s addresse (A record).
  • Get the namservers (threaded).
  • Get the MX record (threaded).
  • Perform axfr queries on nameservers and get BIND VERSION (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.


Modules that are included in perl 5.10.0: Getopt::Long IO::File Thread::Queue
Other Necessary modules: Must have: Net::IP Net::DNS Net::Netmask Optional: Net::Whois::IP HTML::Parser WWW::Mechanize XML::Writer
To install a module, simply run (as root):
sudo apt-get install perl-doc
sudo perl -MCPAN -e shell
cpan[1]> install XML::Writer
cpan[2]> install Net::Netmask
cpan[3]> install String::Random

Perl ithreads support: perl version must be compliled with ithreads support. threads threads::shared
OPTIONS: run "perldoc dnsenum.pl".

root@r00t:~# perl dnsenum.pl -h
dnsenum.pl VERSION:1.2.4
Usage: dnsenum.pl [Options]
Note: the brute force -f switch is obligatory.
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.
--private Show and save private ips at the end of the file domain_ips.txt.
--subfile Write all valid subdomains to this file.
-t, --timeout The tcp and udp timeout values in seconds (default: 10s).
--threads The number of threads that will perform different queries.
-v, --verbose Be verbose: show all the progress and all the error messages.
-p, --pages The number of google search pages to process when scraping names,
the default is 5 pages, the -s switch must be specified.
-s, --scrap The maximum number of subdomains that will be scraped from Google (default 15).
-f, --file Read subdomains from this file to perform brute force.
-u, --update
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 discovred subdomains that have an NS record.
-d, --delay 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 performe reverse lookups.
-e, --exclude
Exclude PTR records that match the regexp expression from reverse lookup results, useful on invalid hostnames.
-o --output Output in XML format. Can be imported in MagicTree (www.gremwell.com)

Via: www.kitploit.com
dnsenum - Multithreaded perl script to enumerate DNS information dnsenum - Multithreaded perl script to enumerate DNS information Reviewed by Zion3R on 18:29 Rating: 5