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dnsrecon.py
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dnsrecon.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# DNSRecon
#
# Copyright (C) 2019 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
__version__ = '0.9.0'
__author__ = 'Carlos Perez, Carlos_Perez@darkoperator.com'
__doc__ = """
DNSRecon http://www.darkoperator.com
by Carlos Perez, Darkoperator
requires dnspython http://www.dnspython.org/
requires netaddr https://github.com/drkjam/netaddr/
"""
import argparse
import os
import string
import sqlite3
import datetime
import netaddr
# Manage the change in Python3 of the name of the Queue Library
try:
from Queue import Queue
except ImportError:
from queue import Queue
from random import Random
from threading import Lock, Thread
from xml.dom import minidom
from xml.etree import ElementTree
from xml.etree.ElementTree import Element
import dns.message
import dns.query
import dns.rdatatype
import dns.resolver
import dns.reversename
import dns.zone
import dns.message
import dns.rdata
import dns.rdatatype
import dns.flags
import json
from dns.dnssec import algorithm_to_text
from lib.crtenum import scrape_crtsh
from lib.gooenum import *
from lib.bingenum import *
from lib.whois import *
from lib.dnshelper import DnsHelper
from lib.msf_print import *
# Global Variables for Brute force Threads
brtdata = []
CONFIG = {
"disable_check_recursion": False,
"disable_check_bindversion": False
}
# Function Definitions
# -------------------------------------------------------------------------------
# Worker & Threadpool classes ripped from
# http://code.activestate.com/recipes/577187-python-thread-pool/
class Worker(Thread):
"""Thread executing tasks from a given tasks queue"""
lck = Lock()
def __init__(self, tasks):
Thread.__init__(self)
self.tasks = tasks
self.daemon = True
self.start()
# Global variable that will hold the results
global brtdata
def run(self):
found_record = []
while True:
(func, args, kargs) = self.tasks.get()
try:
found_record = func(*args, **kargs)
if found_record:
Worker.lck.acquire()
brtdata.append(found_record)
for r in found_record:
if type(r).__name__ == "dict":
for k, v in r.iteritems():
print_status("\t{0}:{1}".format(k, v))
print_status()
else:
print_status("\t {0}".format(" ".join(r)))
Worker.lck.release()
except Exception as e:
print_debug(e)
finally:
self.tasks.task_done()
class ThreadPool:
"""Pool of threads consuming tasks from a queue"""
def __init__(self, num_threads):
self.tasks = Queue(num_threads)
for _ in range(num_threads):
Worker(self.tasks)
def add_task(self,
func,
*args,
**kargs):
"""Add a task to the queue"""
self.tasks.put((func, args, kargs))
def wait_completion(self):
"""Wait for completion of all the tasks in the queue"""
self.tasks.join()
def count(self):
"""Return number of tasks in the queue"""
return self.tasks.qsize()
def exit_brute(pool):
print_error("You have pressed Ctrl-C. Saving found records.")
print_status("Waiting for {0} remaining threads to finish.".format(pool.count()))
pool.wait_completion()
def process_range(arg):
"""
Function will take a string representation of a range for IPv4 or IPv6 in
CIDR or Range format and return a list of IPs.
"""
try:
ip_list = None
range_vals = []
if re.match(r"\S*\/\S*", arg):
ip_list = IPNetwork(arg)
elif (re.match(r"\S*\-\S*", arg)):
range_vals.extend(arg.split("-"))
if len(range_vals) == 2:
ip_list = IPRange(range_vals[0], range_vals[1])
else:
print_error("Range provided is not valid")
return []
except:
print_error("Range provided is not valid")
return []
return ip_list
def process_spf_data(res, data):
"""
This function will take the text info of a TXT or SPF record, extract the
IPv4, IPv6 addresses and ranges, request process include records and return
a list of IP Addresses for the records specified in the SPF Record.
"""
# Declare lists that will be used in the function.
ipv4 = []
ipv6 = []
includes = []
ip_list = []
# check first if it is a sfp record
if not re.search(r"v\=spf", data):
return
# Parse the record for IPv4 Ranges, individual IPs and include TXT Records.
ipv4.extend(re.findall("ip4:(\S*)", "".join(data)))
ipv6.extend(re.findall("ip6:(\S*)", "".join(data)))
# Create a list of IPNetwork objects.
for ip in ipv4:
for i in IPNetwork(ip):
ip_list.append(i)
for ip in ipv6:
for i in IPNetwork(ip):
ip_list.append(i)
# Extract and process include values.
includes.extend(re.findall("include:(\S*)", "".join(data)))
for inc_ranges in includes:
for spr_rec in res.get_txt(inc_ranges):
spf_data = process_spf_data(res, spr_rec[2])
if spf_data is not None:
ip_list.extend(spf_data)
# Return a list of IP Addresses
return [str(ip) for ip in ip_list]
def expand_cidr(cidr_to_expand):
"""
Function to expand a given CIDR and return an Array of IP Addresses that
form the range covered by the CIDR.
"""
ip_list = []
c1 = IPNetwork(cidr_to_expand)
return c1
def expand_range(startip, endip):
"""
Function to expand a given range and return an Array of IP Addresses that
form the range.
"""
return IPRange(startip, endip)
def range2cidr(ip1, ip2):
"""
Function to return the maximum CIDR given a range of IP's
"""
r1 = IPRange(ip1, ip2)
return str(r1.cidrs()[-1])
def write_to_file(data, target_file):
"""
Function for writing returned data to a file
"""
f = open(target_file, "w")
f.write(data)
f.close()
def check_wildcard(res, domain_trg):
"""
Function for checking if Wildcard resolution is configured for a Domain
"""
wildcard = None
test_name = ''.join(Random().sample(string.hexdigits + string.digits,
12)) + "." + domain_trg
ips = res.get_a(test_name)
if len(ips) > 0:
print_debug("Wildcard resolution is enabled on this domain")
print_debug("It is resolving to {0}".format("".join(ips[0][2])))
print_debug("All queries will resolve to this address!!")
wildcard = "".join(ips[0][2])
return wildcard
def brute_tlds(res, domain, verbose=False):
"""
This function performs a check of a given domain for known TLD values.
prints and returns a dictionary of the results.
"""
global brtdata
brtdata = []
# https://en.wikipedia.org/wiki/Country_code_top-level_domain#Types
# https://www.iana.org/domains
# Taken from http://data.iana.org/TLD/tlds-alpha-by-domain.txt
itld = ['arpa']
# Generic TLD
gtld = ['co', 'com', 'info', 'net', 'org']
# Generic restricted TLD
grtld = ['biz', 'name', 'pro']
# Sponsored TLD
stld = ['aereo', 'asia', 'cat', 'coop', 'edu', 'gov', 'int', 'jobs', 'mil', 'mobi', 'museum', 'post', 'tel', 'travel', 'xxx']
# Country Code TLD
cctld = ['ac', 'ad', 'ae', 'af', 'ag', 'ai', 'al', 'am', 'an', 'ao', 'aq', 'ar', 'as', 'at', 'au', 'aw', 'ax', 'az', 'ba', 'bb', 'bd', 'be', 'bf', 'bg', 'bh', 'bi', 'bj', 'bl', 'bm', 'bn', 'bo', 'bq', 'br', 'bs', 'bt', 'bv', 'bw', 'by', 'bz', 'ca', 'cc', 'cd', 'cf', 'cg', 'ch', 'ci', 'ck', 'cl', 'cm', 'cn', 'co', 'cr', 'cu', 'cv', 'cw', 'cx', 'cy', 'cz', 'de', 'dj', 'dk', 'dm', 'do', 'dz', 'ec', 'ee', 'eg', 'eh', 'er', 'es', 'et', 'eu', 'fi', 'fj', 'fk', 'fm', 'fo', 'fr', 'ga', 'gb', 'gd', 'ge', 'gf', 'gg', 'gh', 'gi', 'gl', 'gm', 'gn', 'gp', 'gq', 'gr', 'gs', 'gt', 'gu', 'gw', 'gy', 'hk', 'hm', 'hn', 'hr', 'ht', 'hu', 'id', 'ie', 'il', 'im', 'in', 'io', 'iq', 'ir', 'is', 'it', 'je', 'jm', 'jo', 'jp', 'ke', 'kg', 'kh', 'ki', 'km', 'kn', 'kp', 'kr', 'kw', 'ky', 'kz', 'la', 'lb', 'lc', 'li', 'lk', 'lr', 'ls', 'lt', 'lu', 'lv', 'ly', 'ma', 'mc', 'md', 'me', 'mf', 'mg', 'mh', 'mk', 'ml', 'mm', 'mn', 'mo', 'mp', 'mq', 'mr', 'ms', 'mt', 'mu', 'mv', 'mw', 'mx', 'my', 'mz', 'na', 'nc', 'ne', 'nf', 'ng', 'ni', 'nl', 'no', 'np', 'nr', 'nu', 'nz', 'om', 'pa', 'pe', 'pf', 'pg', 'ph', 'pk', 'pl', 'pm', 'pn', 'pr', 'ps', 'pt', 'pw', 'py', 'qa', 're', 'ro', 'rs', 'ru', 'rw', 'sa', 'sb', 'sc', 'sd', 'se', 'sg', 'sh', 'si', 'sj', 'sk', 'sl', 'sm', 'sn', 'so', 'sr', 'ss', 'st', 'su', 'sv', 'sx', 'sy', 'sz', 'tc', 'td', 'tf', 'tg', 'th', 'tj', 'tk', 'tl', 'tm', 'tn', 'to', 'tp', 'tr', 'tt', 'tv', 'tw', 'tz', 'ua', 'ug', 'uk', 'um', 'us', 'uy', 'uz', 'va', 'vc', 've', 'vg', 'vi', 'vn', 'vu', 'wf', 'ws', 'yt', 'za', 'zm', 'zw']
found_tlds = []
domain_main = domain.split(".")[0]
# Let the user know how long it could take
print_status("The operation could take up to: {0}".format(time.strftime('%H:%M:%S', time.gmtime(( len (itld) + len(gtld) + len(grtld) + len(stld) + len(cctld) ) / 3))))
try:
for t in list(set( itld + gtld + grtld + stld )):
if verbose:
print_status("Trying {0}".format(domain_main + "." + t))
pool.add_task(res.get_ip, domain_main + "." + t)
for cc in cctld:
if verbose:
print_status("Trying {0}".format(domain_main + "." + cc + "." + t))
pool.add_task(res.get_ip, domain_main + "." + cc + "." + t)
for cc in cctld:
if verbose:
print_status("Trying {0}".format(domain_main + "." + cc))
pool.add_task(res.get_ip, domain_main + "." + cc)
# Wait for threads to finish.
pool.wait_completion()
except (KeyboardInterrupt):
exit_brute(pool)
# Process the output of the threads.
for rcd_found in brtdata:
for rcd in rcd_found:
if re.search(r"^A", rcd[0]):
found_tlds.extend([{"type": rcd[0], "name": rcd[1], "address": rcd[2]}])
print_good("{0} Records Found".format(len(found_tlds)))
return found_tlds
def brute_srv(res, domain, verbose=False):
"""
Brute-force most common SRV records for a given Domain. Returns an Array with
records found.
"""
global brtdata
brtdata = []
returned_records = []
srvrcd = [
'_gc._tcp.', '_kerberos._tcp.', '_kerberos._udp.', '_ldap._tcp.',
'_test._tcp.', '_sips._tcp.', '_sip._udp.', '_sip._tcp.', '_aix._tcp.',
'_aix._tcp.', '_finger._tcp.', '_ftp._tcp.', '_http._tcp.', '_nntp._tcp.',
'_telnet._tcp.', '_whois._tcp.', '_h323cs._tcp.', '_h323cs._udp.',
'_h323be._tcp.', '_h323be._udp.', '_h323ls._tcp.', '_https._tcp.',
'_h323ls._udp.', '_sipinternal._tcp.', '_sipinternaltls._tcp.',
'_sip._tls.', '_sipfederationtls._tcp.', '_jabber._tcp.',
'_xmpp-server._tcp.', '_xmpp-client._tcp.', '_imap.tcp.',
'_certificates._tcp.', '_crls._tcp.', '_pgpkeys._tcp.',
'_pgprevokations._tcp.', '_cmp._tcp.', '_svcp._tcp.', '_crl._tcp.',
'_ocsp._tcp.', '_PKIXREP._tcp.', '_smtp._tcp.', '_hkp._tcp.',
'_hkps._tcp.', '_jabber._udp.', '_xmpp-server._udp.', '_xmpp-client._udp.',
'_jabber-client._tcp.', '_jabber-client._udp.', '_kerberos.tcp.dc._msdcs.',
'_ldap._tcp.ForestDNSZones.', '_ldap._tcp.dc._msdcs.', '_ldap._tcp.pdc._msdcs.',
'_ldap._tcp.gc._msdcs.', '_kerberos._tcp.dc._msdcs.', '_kpasswd._tcp.', '_kpasswd._udp.',
'_imap._tcp.', '_imaps._tcp.', '_submission._tcp.', '_pop3._tcp.', '_pop3s._tcp.',
'_caldav._tcp.', '_caldavs._tcp.', '_carddav._tcp.', '_carddavs._tcp.',
'_x-puppet._tcp.', '_x-puppet-ca._tcp.', '_autodiscover._tcp.']
try:
for srvtype in srvrcd:
if verbose:
print_status("Trying {0}".format(srvtype + domain))
pool.add_task(res.get_srv, srvtype + domain)
# Wait for threads to finish.
pool.wait_completion()
except (KeyboardInterrupt):
exit_brute(pool)
# Make sure we clear the variable
if len(brtdata) > 0:
for rcd_found in brtdata:
for rcd in rcd_found:
returned_records.extend([{"type": rcd[0],
"name": rcd[1],
"target": rcd[2],
"address": rcd[3],
"port": rcd[4]}])
else:
print_error("No SRV Records Found for {0}".format(domain))
print_good("{0} Records Found".format(len(returned_records)))
return returned_records
def brute_reverse(res, ip_list, verbose=False):
"""
Reverse look-up brute force for given CIDR example 192.168.1.1/24. Returns an
Array of found records.
"""
global brtdata
brtdata = []
returned_records = []
print_status("Performing Reverse Lookup from {0} to {1}".format(ip_list[0], ip_list[-1]))
# Resolve each IP in a separate thread.
try:
ip_range = xrange(len(ip_list) - 1)
except NameError:
ip_range = range(len(ip_list) - 1)
try:
for x in ip_range:
ipaddress = str(ip_list[x])
if verbose:
print_status("Trying {0}".format(ipaddress))
pool.add_task(res.get_ptr, ipaddress)
# Wait for threads to finish.
pool.wait_completion()
except (KeyboardInterrupt):
exit_brute(pool)
for rcd_found in brtdata:
for rcd in rcd_found:
returned_records.extend([{'type': rcd[0],
"name": rcd[1],
'address': rcd[2]}])
print_good("{0} Records Found".format(len(returned_records)))
return returned_records
def brute_domain(res, dict, dom, filter=None, verbose=False, ignore_wildcard=False):
"""
Main Function for domain brute forcing
"""
global brtdata
brtdata = []
wildcard_ip = None
found_hosts = []
continue_brt = "y"
# Check if wildcard resolution is enabled
wildcard_ip = check_wildcard(res, dom)
if wildcard_ip and not ignore_wildcard:
print_status("Do you wish to continue? y/n")
continue_brt = str(sys.stdin.readline()[:-1])
if re.search(r"y", continue_brt, re.I):
# Check if Dictionary file exists
if os.path.isfile(dict):
with open(dict) as f:
# Thread brute-force.
try:
for line in f:
if verbose:
print_status("Trying {0}".format(line.strip() + '.' + dom.strip()))
target = line.strip() + "." + dom.strip()
pool.add_task(res.get_ip, target)
# Wait for threads to finish
pool.wait_completion()
except (KeyboardInterrupt):
exit_brute(pool)
# Process the output of the threads.
for rcd_found in brtdata:
for rcd in rcd_found:
if re.search(r"^A", rcd[0]):
# Filter Records if filtering was enabled
if filter:
if not wildcard_ip == rcd[2]:
found_hosts.extend([{"type": rcd[0], "name": rcd[1], "address": rcd[2]}])
else:
found_hosts.extend([{"type": rcd[0], "name": rcd[1], "address": rcd[2]}])
elif re.search(r"^CNAME", rcd[0]):
found_hosts.extend([{"type": rcd[0], "name": rcd[1], "target": rcd[2]}])
# Clear Global variable
brtdata = []
print_good("{0} Records Found".format(len(found_hosts)))
return found_hosts
def in_cache(res, dict_file, ns):
"""
Function for Cache Snooping, it will check a given NS server for specific
type of records for a given domain are in it's cache.
"""
found_records = []
with open(dict_file) as f:
for zone in f:
dom_to_query = str.strip(zone)
query = dns.message.make_query(dom_to_query, dns.rdatatype.A, dns.rdataclass.IN)
query.flags ^= dns.flags.RD
answer = res.query(query, ns)
if len(answer.answer) > 0:
for an in answer.answer:
for rcd in an:
if rcd.rdtype == 1:
print_status("\tName: {0} TTL: {1} Address: {2} Type: A".format(an.name, an.ttl, rcd.address))
found_records.extend([{"type": "A", "name": an.name,
"address": rcd.address, "ttl": an.ttl}])
elif rcd.rdtype == 5:
print_status("\tName: {0} TTL: {1} Target: {2} Type: CNAME".format(an.name, an.ttl, rcd.target))
found_records.extend([{"type": "CNAME", "name": an.name,
"target": rcd.target, "ttl": an.ttl}])
else:
print_status()
return found_records
def se_result_process(res, found_hosts):
"""
This function processes the results returned from a Search Engine and does
an A and AAAA query for the IP of the found host. Prints and returns a dictionary
with all the results found.
"""
returned_records = []
if found_hosts == None:
return None
for sd in found_hosts:
for sdip in res.get_ip(sd):
if re.search(r"^A|CNAME", sdip[0]):
print_status("\t {0} {1} {2}".format(sdip[0], sdip[1], sdip[2]))
if re.search(r"^A", sdip[0]):
returned_records.extend([{"type": sdip[0], "name": sdip[1],
"address": sdip[2]}])
else:
returned_records.extend([{"type": sdip[0], "name": sdip[1],
"target": sdip[2]}])
print_good("{0} Records Found".format(len(returned_records)))
return returned_records
def get_whois_nets_iplist(ip_list):
"""
This function will perform whois queries against a list of IP's and extract
the net ranges and if available the organization list of each and remover any
duplicate entries.
"""
seen = {}
idfun = repr
found_nets = []
for ip in ip_list:
if ip != "no_ip":
# Find appropriate Whois Server for the IP
whois_server = get_whois(ip)
# If we get a Whois server Process get the whois and process.
if whois_server:
whois_data = whois(ip, whois_server)
arin_style = re.search("NetRange", whois_data)
ripe_apic_style = re.search("netname", whois_data)
if (arin_style or ripe_apic_style):
net = get_whois_nets(whois_data)
if net:
for network in net:
org = get_whois_orgname(whois_data)
found_nets.append({"start": network[0], "end": network[1], "orgname": "".join(org)})
else:
for line in whois_data.splitlines():
recordentrie = re.match("^(.*)\s\S*-\w*\s\S*\s(\S*\s-\s\S*)", line)
if recordentrie:
org = recordentrie.group(1)
net = get_whois_nets(recordentrie.group(2))
for network in net:
found_nets.append({"start": network[0], "end": network[1], "orgname": "".join(org)})
#Remove Duplicates
return [seen.setdefault(idfun(e), e) for e in found_nets if idfun(e) not in seen]
def whois_ips(res, ip_list):
"""
This function will process the results of the whois lookups and present the
user with the list of net ranges found and ask the user if he wishes to perform
a reverse lookup on any of the ranges or all the ranges.
"""
answer = ""
found_records = []
print_status("Performing Whois lookup against records found.")
list = get_whois_nets_iplist(unique(ip_list))
if len(list) > 0:
print_status("The following IP Ranges were found:")
for i in range(len(list)):
print_status(
"\t {0} {1}-{2} {3}".format(str(i) + ")", list[i]["start"], list[i]["end"], list[i]["orgname"]))
print_status("What Range do you wish to do a Revers Lookup for?")
print_status("number, comma separated list, a for all or n for none")
val = sys.stdin.readline()[:-1]
answer = str(val).split(",")
if "a" in answer:
for i in range(len(list)):
print_status("Performing Reverse Lookup of range {0}-{1}".format(list[i]['start'], list[i]['end']))
found_records.append(brute_reverse(res, expand_range(list[i]['start'], list[i]['end'])))
elif "n" in answer:
print_status("No Reverse Lookups will be performed.")
pass
else:
for a in answer:
net_selected = list[int(a)]
print_status(net_selected['orgname'])
print_status(
"Performing Reverse Lookup of range {0}-{1}".format(net_selected['start'], net_selected['end']))
found_records.append(brute_reverse(res, expand_range(net_selected['start'], net_selected['end'])))
else:
print_error("No IP Ranges were found in the Whois query results")
return found_records
def prettify(elem):
"""
Return a pretty-printed XML string for the Element.
"""
rough_string = ElementTree.tostring(elem, 'utf-8')
reparsed = minidom.parseString(rough_string)
return reparsed.toprettyxml(indent=" ")
def dns_record_from_dict(record_dict_list, scan_info, domain):
"""
Saves DNS Records to XML Given a a list of dictionaries each representing
a record to be saved, returns the XML Document formatted.
"""
xml_doc = Element("records")
for r in record_dict_list:
elem = Element("record")
if type(r) is not str:
try:
for k, v in r.items():
try:
k = unicode(str(k))
v = unicode(str(v))
elem.attrib[k] = v
except:
print_error("Could not convert key or value to unicode: '{0} = {1}'".format((repr(k)), (repr(v))))
print_error("In element: {0}".format(repr(elem.attrib)))
continue
xml_doc.append(elem)
except AttributeError:
continue
except AttributeError:
continue
scanelem = Element("scaninfo")
scanelem.attrib["arguments"] = scan_info[0]
scanelem.attrib["time"] = scan_info[1]
xml_doc.append(scanelem)
if domain is not None:
domelem = Element("domain")
domelem.attrib["domain_name"] = domain
xml_doc.append(domelem)
return prettify(xml_doc)
def create_db(db):
"""
Function will create the specified database if not present and it will create
the table needed for storing the data returned by the modules.
"""
# Connect to the DB
con = sqlite3.connect(db)
# Create SQL Queries to be used in the script
make_table = """CREATE TABLE data (
serial integer Primary Key Autoincrement,
type TEXT(8),
name TEXT(32),
address TEXT(32),
target TEXT(32),
port TEXT(8),
text TEXT(256),
zt_dns TEXT(32)
)"""
# Set the cursor for connection
con.isolation_level = None
cur = con.cursor()
# Connect and create table
cur.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='data';")
if cur.fetchone() is None:
cur.execute(make_table)
con.commit()
else:
pass
def make_csv(data):
csv_data = "Type,Name,Address,Target,Port,String\n"
for n in data:
# make sure that we are working with a dictionary.
if isinstance(n, dict):
if re.search(r"PTR|^[A]$|AAAA", n["type"]):
csv_data += n["type"] + "," + n["name"] + "," + n["address"] + "\n"
elif re.search(r"NS$", n["type"]):
csv_data += n["type"] + "," + n["target"] + "," + n["address"] + "\n"
elif re.search(r"SOA", n["type"]):
csv_data += n["type"] + "," + n["mname"] + "," + n["address"] + "\n"
elif re.search(r"MX", n["type"]):
csv_data += n["type"] + "," + n["exchange"] + "," + n["address"] + "\n"
elif re.search(r"SPF", n["type"]):
if "zone_server" in n:
csv_data += n["type"] + ",,,,,\'" + n["strings"] + "\'\n"
else:
csv_data += n["type"] + ",,,,,\'" + n["strings"] + "\'\n"
elif re.search(r"TXT", n["type"]):
if "zone_server" in n:
csv_data += n["type"] + ",,,,,\'" + n["strings"] + "\'\n"
else:
csv_data += n["type"] + "," + n["name"] + ",,,,\'" + n["strings"] + "\'\n"
elif re.search(r"SRV", n["type"]):
csv_data += n["type"] + "," + n["name"] + "," + n["address"] + "," + n["target"] + "," + n["port"] + "\n"
elif re.search(r"CNAME", n["type"]):
if "target" not in n.keys():
n["target"] = ""
csv_data += n["type"] + "," + n["name"] + ",," + n["target"] + ",\n"
else:
# Handle not common records
t = n["type"]
del n["type"]
record_data = "".join(["%s =%s," % (key, value) for key, value in n.items()])
records = [t, record_data]
csv_data + records[0] + ",,,,," + records[1] + "\n"
return csv_data
def write_json(jsonfile, data, scan_info):
scaninfo = {"type": "ScanInfo", "arguments": scan_info[0], "date": scan_info[1]}
data.insert(0, scaninfo)
json_data = json.dumps(data, sort_keys=True, indent=4, separators=(',', ': '))
write_to_file(json_data, jsonfile)
def write_db(db, data):
"""
Function to write DNS Records SOA, PTR, NS, A, AAAA, MX, TXT, SPF and SRV to
DB.
"""
con = sqlite3.connect(db)
# Set the cursor for connection
con.isolation_level = None
cur = con.cursor()
# Normalize the dictionary data
for n in data:
if re.match(r'PTR|^[A]$|AAAA', n['type']):
query = 'insert into data( type, name, address ) ' + \
'values( "%(type)s", "%(name)s","%(address)s" )' % n
elif re.match(r'NS$', n['type']):
query = 'insert into data( type, name, address ) ' + \
'values( "%(type)s", "%(target)s", "%(address)s" )' % n
elif re.match(r'SOA', n['type']):
query = 'insert into data( type, name, address ) ' + \
'values( "%(type)s", "%(mname)s", "%(address)s" )' % n
elif re.match(r'MX', n['type']):
query = 'insert into data( type, name, address ) ' + \
'values( "%(type)s", "%(exchange)s", "%(address)s" )' % n
elif re.match(r'TXT', n['type']):
query = 'insert into data( type, text) ' + \
'values( "%(type)s","%(strings)s" )' % n
elif re.match(r'SPF', n['type']):
query = 'insert into data( type, text) ' + \
'values( "%(type)s","%(text)s" )' % n
elif re.match(r'SPF', n['type']):
query = 'insert into data( type, text) ' + \
'values( "%(type)s","%(text)s" )' % n
elif re.match(r'SRV', n['type']):
query = 'insert into data( type, name, target, address, port ) ' + \
'values( "%(type)s", "%(name)s" , "%(target)s", "%(address)s" ,"%(port)s" )' % n
elif re.match(r'CNAME', n['type']):
query = 'insert into data( type, name, target ) ' + \
'values( "%(type)s", "%(name)s" , "%(target)s" )' % n
else:
# Handle not common records
t = n['type']
del n['type']
record_data = "".join(['%s=%s,' % (key, value) for key, value in n.items()])
records = [t, record_data]
query = "insert into data(type,text) values ('" + \
records[0] + "','" + records[1] + "')"
# Execute Query and commit
cur.execute(query)
con.commit()
def get_nsec_type(domain, res):
target = "0." + domain
answer = get_a_answer(res, target, res._res.nameservers[0], res._res.timeout)
for a in answer.authority:
if a.rdtype == 50:
return "NSEC3"
elif a.rdtype == 47:
return "NSEC"
def dns_sec_check(domain, res):
"""
Check if a zone is configured for DNSSEC and if so if NSEC or NSEC3 is used.
"""
try:
answer = res._res.query(domain, 'DNSKEY')
print_status("DNSSEC is configured for {0}".format(domain))
nsectype = get_nsec_type(domain, res)
print_status("DNSKEYs:")
for rdata in answer:
if rdata.flags == 256:
key_type = "ZSK"
if rdata.flags == 257:
key_type = "KSk"
print_status("\t{0} {1} {2} {3}".format(nsectype, key_type, algorithm_to_text(rdata.algorithm),
dns.rdata._hexify(rdata.key)))
except dns.resolver.NXDOMAIN:
print_error("Could not resolve domain: {0}".format(domain))
sys.exit(1)
except dns.resolver.NoNameservers:
print_error("All nameservers failed to answer the DNSSEC query for {0}".format(domain))
except dns.exception.Timeout:
print_error("A timeout error occurred please make sure you can reach the target DNS Servers")
print_error("directly and requests are not being filtered. Increase the timeout from {0} second".format(
res._res.timeout))
print_error("to a higher number with --lifetime <time> option.")
sys.exit(1)
except dns.resolver.NoAnswer:
print_error("DNSSEC is not configured for {0}".format(domain))
def check_bindversion(res, ns_server, timeout):
"""
Check if the version of Bind can be queried for.
"""
version = ""
if not CONFIG or not CONFIG.get("disable_check_bindversion", False):
request = dns.message.make_query('version.bind', 'txt', 'ch')
try:
response = res.query(request, ns_server, timeout=timeout, one_rr_per_rrset=True)
if (len(response.answer) > 0):
print_status("\t Bind Version for {0} {1}".format(ns_server, response.answer[0].items[0].strings[0]))
version = response.answer[0].items[0].strings[0]
except (dns.resolver.NXDOMAIN, dns.exception.Timeout, dns.resolver.NoAnswer, socket.error, dns.query.BadResponse):
pass
return version
def check_recursive(res, ns_server, timeout):
"""
Check if a NS Server is recursive.
"""
is_recursive = False
if not CONFIG or not CONFIG.get("disable_check_recursion", False):
query = dns.message.make_query('www.google.com.', dns.rdatatype.NS)
try:
response = res.query(query, ns_server, timeout)
recursion_flag_pattern = "\.*RA\.*"
flags = dns.flags.to_text(response.flags)
result = re.findall(recursion_flag_pattern, flags)
if (result):
print_error("\t Recursion enabled on NS Server {0}".format(ns_server))
is_recursive = True
except (socket.error, dns.exception.Timeout):
pass
return is_recursive
def general_enum(res, domain, do_axfr, do_google, do_bing, do_spf, do_whois, do_crt, zw):
"""
Function for performing general enumeration of a domain. It gets SOA, NS, MX
A, AAAA and SRV records for a given domain. It will first try a Zone Transfer
if not successful it will try individual record type enumeration. If chosen
it will also perform a Google Search and scrape the results for host names and
perform an A and AAAA query against them.
"""
returned_records = []
# Var for SPF Record Range Reverse Look-up
found_spf_ranges = []
# Var to hold the IP Addresses that will be queried in Whois
ip_for_whois = []
# Check if wildcards are enabled on the target domain
check_wildcard(res, domain)
# To identify when the records come from a Zone Transfer
from_zt = None
# Perform test for Zone Transfer against all NS servers of a Domain
if do_axfr == True :
zonerecs = res.zone_transfer()
if zonerecs is not None:
returned_records.extend(res.zone_transfer())
if len(returned_records) == 0:
from_zt = True
# If a Zone Trasfer was possible there is no need to enumerate the rest
if from_zt is None:
# Check if DNSSEC is configured
dns_sec_check(domain, res)
# Enumerate SOA Record
found_soa_records = res.get_soa()
try:
found_soa_records = res.get_soa()
for found_soa_record in found_soa_records:
print_status("\t {0} {1} {2}".format(found_soa_record[0], found_soa_record[1], found_soa_record[2]))
# Save dictionary of returned record
returned_records.extend([{"type": found_soa_record[0],
"mname": found_soa_record[1], "address": found_soa_record[2]}])
ip_for_whois.append(found_soa_record[2])
except:
print_error("Could not Resolve SOA Record for {0}".format(domain))
# Enumerate Name Servers
try:
for ns_rcrd in res.get_ns():
print_status("\t {0} {1} {2}".format(ns_rcrd[0], ns_rcrd[1], ns_rcrd[2]))
# Save dictionary of returned record
recursive = check_recursive(res, ns_rcrd[2], res._res.timeout)
bind_ver = check_bindversion(res, ns_rcrd[2], res._res.timeout)
returned_records.extend([
{"type": ns_rcrd[0], "target": ns_rcrd[1], "address": ns_rcrd[2], "recursive": str(recursive),
"Version": bind_ver}])
ip_for_whois.append(ns_rcrd[2])
except dns.resolver.NoAnswer:
print_error("Could not Resolve NS Records for {0}".format(domain))
except dns.resolver.NoNameservers:
print_error("All nameservers failed to answer the NS query for {0}".format(domain))
sys.exit(1)
# Enumerate MX Records
try:
for mx_rcrd in res.get_mx():
print_status("\t {0} {1} {2}".format(mx_rcrd[0], mx_rcrd[1], mx_rcrd[2]))
# Save dictionary of returned record
returned_records.extend([{"type": mx_rcrd[0], "exchange": mx_rcrd[1], 'address': mx_rcrd[2]}])
ip_for_whois.append(mx_rcrd[2])
except dns.resolver.NoAnswer:
print_error("Could not Resolve MX Records for {0}".format(domain))
except dns.resolver.NoNameservers:
print_error("All nameservers failed to answer the MX query for {0}".format(domain))