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dnsrecon - DNS Enumueration and Scanning Tool

DNSRECON(1) dnsrecon - DNS Enumeration Tool DNSRECON(1)


dnsrecon - DNS Enumueration and Scanning Tool


dnsrecon <options>


-h, --help
Show help message and exit

-d, --domain <domain>
Domain to Target for enumeration.

-r, --range <range>
IP Range for reverse look-up brute force in formats (first-last)
or in (range/bitmask).

-n, --name_server <name>
Domain server to use, if none is given the SOA of the
target will be used

-D, --dictionary <file>
Dictionary file of sub-domain and hostnames to use for
brute force.

-f Filter out of Brute Force Domain lookup records that resolve
to the wildcard defined IP Address when saving records.

-t, --type <types>

Specify the type of enumeration to perform:

std To Enumerate general record types, enumerates.
SOA, NS, A, AAAA, MX and SRV if AXRF on the
NS Servers fail.
rvl To Reverse Look Up a given CIDR IP range.

brt To Brute force Domains and Hosts using a given

srv To Enumerate common SRV Records for a given

axfr Test all NS Servers in a domain for misconfigured
zone transfers.

goo Perform Google search for sub-domains and hosts.

snoop To Perform a Cache Snooping against all NS
servers for a given domain, testing all with
file containing the domains, file given with -D

tld Will remove the TLD of given domain and test against
all TLD's registered in IANA

zonewalk Will perform a DNSSEC Zone Walk using NSEC Records.

-a Perform AXFR with the standard enumeration.

-s Perform Reverse Look-up of ipv4 ranges in the
SPF Record of the targeted domain with the
standard enumeration.

-g Perform Google enumeration with the standard

-w Do deep whois record analysis and
reverse look-up of IP ranges found thru whois
when doing standard query.

-z Performs a DNSSEC Zone Walk with the standard

--threads <number>
Number of threads to use in Range Reverse Look-up,
Forward Look-up Brute force
and SRV Record Enumeration

--lifetime <number>
Time to wait for a server to response to a query.

--db <file> SQLite 3 file to save found records.

--xml <file> XML File to save found records.

-c, --csv <file> Comma separated value file.

-v Show attempts in the bruteforce modes.


I wrote this tool back in late 2006 and it has been my favorite tool for enumeration thru DNS, in great part because I wrote it and it gives the output in a way that I can manipulate it in my own style. One of the features that I used the most and gave me excellent results is the SRV record enumeration.
The script will perform the following:
Standard Record Enumeration for a given domain (A, NS, SOA and MX). Top Leven Domain Expansion for a given domain. Zone Transfer against all NS records of a given domain. Reverse Lookup against a given IP Range given a start and end IP.
SRV Record enumeration, enumerating:

Brute force hostnames and subdomains of a given target domain using a wordlist.


Carlos Perez, Copyright (C) 2012 Carlos Perez
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; Applies version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
March 23, 2013 0.8.1