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DNS Spider Multithreaded Bruteforcer 0.5

DNS Spider Multithreaded Bruteforcer 0.5
Posted Apr 10, 2014
Authored by noptrix | Site nullsecurity.net

DNS Spider is a multithreaded bruteforcer of subdomains that leverages a wordlist and/or character permutation.

Changes: Fixed extracted ip addresses from rrset answers. Renamed file (removed version string). Removed trailing whitespaces and color output. Changed banner.
tags | tool, scanner
systems | unix
SHA-256 | 71f3eaaacf5ef1c85337ecc8988cf32788e6c5b8a3a0893669096eefc30b9354

DNS Spider Multithreaded Bruteforcer 0.5

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#!/usr/bin/env python
# -*- coding: latin-1 -*- ######################################################
# ____ _ __ #
# ___ __ __/ / /__ ___ ______ ______(_) /___ __ #
# / _ \/ // / / (_-</ -_) __/ // / __/ / __/ // / #
# /_//_/\_,_/_/_/___/\__/\__/\_,_/_/ /_/\__/\_, / #
# /___/ team #
# #
# dnsspider.py - multithreaded subdomain bruteforcer #
# #
# DATE #
# 08/16/2012 #
# #
# DESCRIPTION #
# A very fast multithreaded bruteforcer of subdomains that leverages a #
# wordlist and/or character permutation. #
# #
# AUTHOR #
# noptrix - http://www.nullsecurity.net/ #
# #
# NOTES: #
# quick'n'dirty code #
# #
# CHANGELOG: #
# v0.5 #
# - fixed extracted ip addresses from rrset answers #
# - renamed file (removed version string) #
# - removed trailing whitespaces #
# - removed color output #
# - changed banner #
# #
# v0.4 #
# - fixed a bug for returned list #
# - added postfix option #
# - upgraded wordlist[] #
# - colorised output #
# - changed error messages #
# #
# v0.3: #
# - added verbose/quiet mode - default is quiet now #
# - fixed try/catch for domainnames #
# - fixed some tab width (i normally use <= 80 chars per line) #
# #
# v0.2: #
# - append DNS and IP output to found list #
# - added diffound list for subdomains resolved to different addresses #
# - get right ip address from current used iface to avoid socket problems #
# - fixed socket exception syntax and output #
# - added usage note for fixed port and multithreaded socket exception #
# #
# v0.1: #
# - initial release #
################################################################################


import sys
import time
import string
import itertools
import socket
import threading
import re


BANNER = '--==[ dnsspider by - noptrix@nullsecurity.net ]==--'
USAGE = '\n\n' \
' dnsspider.py -t <arg> -a <arg> [options]'
VERSION = 'dnsspider.py v0.5'

defaults = {}
hostnames = []
prefix = ''
postfix = ''
found = []
diffound = []
chars = string.ascii_lowercase
digits = string.digits

# hostnames
wordlist = [
'access', 'accounting', 'accounts', 'adm', 'admin',
'administrator', 'apache', 'app', 'application', 'auth', 'auto', 'backup',
'backups', 'beta', 'bill', 'billing', 'bm', 'board', 'cart', 'central',
'chat', 'cli', 'client', 'connect', 'control', 'controller', 'customer',
'cvs', 'data', 'db', 'demo', 'dev', 'devel', 'developer', 'dns', 'doc',
'docs', 'document', 'domain', 'download', 'downloads', 'eaccess', 'earth',
'email', 'example', 'examples', 'exit', 'ext', 'extern', 'external',
'extranet', 'files', 'finance', 'firewall', 'forum', 'ftp', 'fw', 'gallery',
'gate', 'gateway', 'git', 'groups', 'guest', 'gw', 'help', 'helpdesk',
'home', 'hpc', 'image', 'images', 'imap', 'img', 'imgs', 'in', 'info',
'int', 'interface', 'intern', 'internal', 'intranet', 'ip6', 'ipv6', 'irc',
'isa', 'it', 'jabber', 'jboss', 'jupiter', 'lan', 'ldap', 'linux', 'login',
'mail', 'mailgate', 'main', 'manage', 'manager', 'managers', 'marketing',
'mars', 'mobile', 'mssql', 'mx', 'mx01', 'mysql', 'netmail', 'news', 'noc',
'ns', 'ns01', 'ns1', 'ntp', 'office', 'online', 'op', 'oracle', 'out',
'owa', 'partner', 'partners', 'pc', 'personal', 'phpmyadmin', 'plesk',
'pma', 'pop', 'pop3', 'portal', 'pre', 'printer', 'priv', 'private',
'proxy', 'pub', 'public', 'rack', 'release', 'report', 'reports',
'research', 'router', 'sales', 'search', 'sec', 'secure', 'server',
'services', 'share', 'sharepoint', 'shares', 'shop', 'sms', 'smtp',
'software', 'sql', 'squirrel', 'squirrelmail', 'srv', 'ssh', 'staff',
'stage1', 'staging', 'stat', 'static', 'stats', 'storage', 'store',
'subversion', 'sun', 'support', 'svn', 'test', 'testing', 'tests', 'time',
'tool', 'tools', 'tunnel', 'unix', 'update', 'upload', 'uploads', 'venus',
'videos', 'virtual', 'vpn', 'vz', 'wap', 'web', 'webcam', 'webmail',
'webmin', 'webserver', 'webshop', 'win', 'windows', 'wlan', 'workstation',
'www', 'www01', 'www1', 'zeus'
]

from optparse import OptionParser
try:
import dns.message
import dns.query
except ImportError:
print("[-] ERROR: you need 'dnspython' package")
sys.exit()


def usage():
print('\n' + USAGE)
sys.exit()
return


def check_usage():
if len(sys.argv) == 1:
print('[-] WARNING: use -h for help and usage')
sys.exit()
return


def get_default_nameserver():
print('[*] getting default nameserver')
lines = list(open('/etc/resolv.conf', 'r'))
for line in lines:
line = string.strip(line)
if not line or line[0] == ';' or line[0] == '#':
continue
fields = string.split(line)
if len(fields) < 2:
continue
if fields[0] == 'nameserver':
defaults['nameserver'] = fields[1]
return defaults


def get_default_source_ip():
print('[*] getting default ip address')
try:
# get current used iface enstablishing temp socket
ipsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ipsocket.connect(("gmail.com", 80))
defaults['ipaddr'] = ipsocket.getsockname()[0]
print('[*] found currently used interface ip ' + "'" +
defaults['ipaddr'] + "'")
ipsocket.close()
except:
print(''' [-] WARNING: can\'t get your ip-address, use "-i" option and
define yourself''')
return defaults


def parse_cmdline():
p = OptionParser(usage=USAGE, version=VERSION)
p.add_option('-t', dest='type',
help='attack type (0 for dictionary 1 for bruteforce)')
p.add_option('-a', dest='domain',
help='subdomain to bruteforce')
p.add_option('-l', dest='wordlist',
help='wordlist, one hostname per line (default pprintefined in code)')
p.add_option('-d', dest='dnshost',
help='choose another nameserver (default your system\'s)')
p.add_option('-i', dest='ipaddr',
help='source ip address to use (default your systems\'s)')
p.add_option('-p', dest='port', default=0,
help='source port to use (default %default --> first free random'
'port) ' '\n\nnote: if fixed port, use max 1 thread!')
p.add_option('-u', dest='protocol', default='udp',
help='speak via udp or tcp (default %default)')
p.add_option('-c', dest='charset', default=0,
help='''choose charset 0 [a-z0-9], 1 [a-z] or 2 [0-9] (default '''
'''%default)''')
p.add_option('-m', dest='max', default=2,
help='max chars to bruteforce (default %default)')
p.add_option('-s', dest='prefix',
help='prefix for bruteforce, e.g. "www" (default none)')
p.add_option('-g', dest='postfix',
help='postfix for bruteforce, e.g. "www" (default none)')
p.add_option('-o', dest='timeout', default=3,
help='timeout (default %defaults)')
p.add_option('-v', action='store_true', dest='verbose',
help='verbose mode - prints every attempt (default quiet)')
p.add_option('-w', dest='wait', default=0,
help='seconds to wait for next request (default %default)')
p.add_option('-x', dest='threads', default=32,
help='number of threads to use (default %default) - choose more :)')
p.add_option('-r', dest='logfile', default='stdout',
help='write found subdomains to file (default %default)')
(opts, args) = p.parse_args()
return opts


def check_cmdline(opts):
if not opts.type or not opts.domain:
print('[-] ERROR: mount /dev/brain')
sys.exit()
return


def set_opts(defaults, opts):
if not opts.dnshost:
opts.dnshost = defaults['nameserver']
if not opts.ipaddr:
opts.ipaddr = defaults['ipaddr']
if int(opts.charset) == 0:
opts.charset = chars + digits
elif int(opts.charset) == 1:
opts.charset = chars
else:
opts.charset = digits
if not opts.prefix:
opts.prefix = prefix
if not opts.postfix:
opts.postfix = postfix
return opts


def read_hostnames(opts):
print('[*] reading hostnames')
hostnames = []
if opts.wordlist:
hostnames = list(open(opts.wordlist, 'r'))
return hostnames
else:
return wordlist


def attack(opts, hostname, attack_pool):
if opts.verbose:
sys.stdout.write(' -> trying %s\n' % hostname)
sys.stdout.flush()
try:
x = dns.message.make_query(hostname, 1)
if opts.protocol == 'udp':
a = dns.query.udp(x, opts.dnshost, float(opts.timeout), 53, None,
opts.ipaddr, int(opts.port), True, False)
else:
a = dns.query.tcp(x, opts.dnshost, float(opts.timeout), 53, None,
opts.ipaddr, int(opts.port), False)
attack_pool.release()
except dns.exception.Timeout:
print('[-] ERROR: time out!')
sys.exit()
except socket.error:
print('''[-] ERROR: no connection? ip|srcport incorrectly defined? you
can run only one thread if fixed source port specified!''')
sys.exit()
if a.answer:
answ = ''
# iterate dns rrset answer (can be multiple sets) field to extract
# detailed info (dns and ip)
for i in a.answer:
answ += str(i[0])
answ += ' '
answer = (hostname, answ)
found.append(answer)
else:
pass
return


def str_gen(opts, hostnames):
print('[*] generating list of strings')
tmp_hostnames = itertools.product(opts.charset, repeat=int(opts.max))
hostnames = list(tmp_hostnames)
hostnames = map(''.join, hostnames)
return hostnames


def run_threads(opts, hostname, attack_pool, threads):
t = threading.Thread(target=attack, args=(opts, hostname, attack_pool))
attack_pool.acquire()
t.start()
threads.append(t)
return threads


def prepare_attack(opts, hostnames):
sys.stdout.write('[*] attacking \'%s\' via ' % opts.domain)
threads = list()
attack_pool = threading.BoundedSemaphore(value=int(opts.threads))
if opts.type == '0':
sys.stdout.write('dictionary\n')
for hostname in hostnames:
hostname = hostname.rstrip() + '.' + opts.domain
time.sleep(float(opts.wait))
threads = run_threads(opts, hostname, attack_pool, threads)
for t in threads:
t.join()
elif opts.type == '1':
sys.stdout.write('bruteforce\n')
hostnames = str_gen(opts, hostnames)
for hostname in hostnames:
hostname = opts.prefix + hostname + opts.postfix + '.' + opts.domain
time.sleep(float(opts.wait))
threads = run_threads(opts, hostname, attack_pool, threads)
for t in threads:
t.join()
else:
print('[-] ERROR: unknown attack type')
sys.exit()
return


def ip_extractor(ip):
#extract ip from string of rrset answer object
try:
extracted = re.findall(r'[0-9]+(?:\.[0-9]+){3}', ip)
return extracted[0]
except:
print('[-] ERROR: can\'t extract ip addresses')
sys.exit()


def analyze_results(opts, found):
#get maindomain ip
try:
mainhostip = socket.gethostbyname(opts.domain)
#append domain|ip to diffound if subdomain ip different than starting
# domain ip
([diffound.append(domain + ' | ' + ip)
for domain, ip in found if ip_extractor(ip) != mainhostip])
except dns.exception.Timeout:
sys.exit()
except socket.error:
print('[-] ERROR: wrong domain or no connection?')
sys.exit()
return


def log_results(opts, found, diffound):
if opts.logfile == 'stdout':
print('---')
if not found:
print('no hosts found :(')
else:
print('ANSWERED DNS REQUESTS')
print('---')
for f in found:
print(f[0]+' | '+f[1])
if not diffound:
print('---')
print('NO HOSTS WITH DIFFERENT IP FOUND :(')
else:
print('---')
print('ANSWERED DNS REQUEST WITH DIFFERENT IP')
print('---')
for domain in diffound:
print(domain)
else:
print('[+] \033[0;94mlogging results to %s\033[0;m' % opts.logfile)
with open(opts.logfile, 'w') as f:
if found:
f.write('---\n')
f.write('ANSWERED DNS REQUESTS\n')
f.write('---\n')
for x in found:
f.write('domain: '+x[0]+' | '+x[1]+ '\n')
if not diffound:
f.write('---\nNO HOSTS WITH DIFFERENT IP FOUND :(\n')
else:
f.write('---\nANSWERED DNS REQUEST WITH DIFFERENT IP\n---\n')
for domain in diffound:
f.write(domain + '\n')
f.close()
print('[*] game over')
return


def main():
check_usage()
opts = parse_cmdline()
check_cmdline(opts)
if not opts.dnshost:
defaults = get_default_nameserver()
if not opts.ipaddr:
defaults = get_default_source_ip()
if opts.protocol != 'udp' and opts.protocol != 'tcp':
print('[-] ERROR: unknown protocol')
sys.exit(1337)
opts = set_opts(defaults, opts)
hostnames = read_hostnames(opts)
prepare_attack(opts, hostnames)
analyze_results(opts, found)
log_results(opts, found, diffound)
return


if __name__ == '__main__':
try:
print(BANNER)
main()
except KeyboardInterrupt:
print('\n[-] WARNING: aborted by user')
raise SystemExit

# EOF
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