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".

[email protected]:~# 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)

dnsenum - Multithreaded perl script to enumerate DNS information dnsenum - Multithreaded perl script to enumerate DNS information Reviewed by Zion3R on 6:00 PM Rating: 5