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cloudflare-origin-ip.py
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cloudflare-origin-ip.py
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#!/usr/bin/python3
import os
import sys
import json
import requests
import tldextract
import socket
import argparse
import threading
import time
import ipaddress
import textwrap
from functools import partial
# from urlparse import urlparse
from urllib import parse
from termcolor import colored
from netaddr import *
from multiprocessing.dummy import Pool
# disable "InsecureRequestWarning: Unverified HTTPS request is being made."
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
def banner():
print("""
_ _ __ _ _ _ _
___| | ___ _ _ __| |/ _| | __ _ _ __ ___ ___ _ __(_) __ _(_)_ __ (_)_ __ _ __ _ _
/ __| |/ _ \| | | |/ _` | |_| |/ _` | '__/ _ \ / _ \| '__| |/ _` | | '_ \ | | '_ \ | '_ \| | | |
| (__| | (_) | |_| | (_| | _| | (_| | | | __/ | (_) | | | | (_| | | | | | | | |_) | _ | |_) | |_| |
\___|_|\___/ \__,_|\__,_|_| |_|\__,_|_| \___| \___/|_| |_|\__, |_|_| |_| |_| .__/ (_) | .__/ \__, |
|___/ |_| |_| |___/
by @gwendallecoguic
""")
pass
banner()
TEST_BYPASS = 1
GOOD_CANDIDATE_SCORE = 80
COMPARE_FIRST_CHARS = 1000
REQUEST_TIMEOUT = 3
MAX_THREADS = 10
# COEF_STATUS_CODE = 0.5
# COEF_CONTENT = 1
# COEF_HEADERS = 0.8
# COEF_CONTENT_TYPE = 0.6
# COEF_STATUS_CODE = 1
# COEF_CONTENT = 2
# COEF_HEADERS = 1.5
# COEF_CONTENT_TYPE = 1.3
r_cloudflare = [
# ipv4
'103.21.244.0/22',
'103.22.200.0/22',
'103.31.4.0/22',
'104.16.0.0/13',
'104.24.0.0/14',
'108.162.192.0/18',
'131.0.72.0/22',
'141.101.64.0/18',
'162.158.0.0/15',
'172.64.0.0/13',
'173.245.48.0/20',
'188.114.96.0/20',
'190.93.240.0/20',
'197.234.240.0/22',
'198.41.128.0/17',
# ipv6
'2400:cb00::/32',
'2606:4700::/32',
'2803:f800::/32',
'2405:b500::/32',
'2405:8100::/32',
'2a06:98c0::/29',
'2c0f:f248::/32',
]
r_cloudflare_i = [
# ipv4
[1729491968,1729492991],
[1729546240,1729547263],
[1730085888,1730086911],
[1745879040,1746403327],
[1746403328,1746665471],
[1822605312,1822621695],
[2197833728,2197834751],
[2372222976,2372239359],
[2728263680,2728394751],
[2889875456,2890399743],
[2918526976,2918531071],
[3161612288,3161616383],
[3193827328,3193831423],
[3320508416,3320509439],
[3324608512,3324641279],
# ipv6 ?
]
r_cloudflare6 = [
]
t_exclude_headers = [
'Set-Cookie', 'Date', 'Last-Modified', 'Expires', 'Age', 'CF-RAY'
]
parser = argparse.ArgumentParser( formatter_class=argparse.RawDescriptionHelpFormatter, epilog=textwrap.dedent('''Examples:
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx -s censys,crtsh,securitytrails (default)
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx -s /home/local/ips.txt
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx -s censys,crtsh,/home/local/ips.txt,/home/local/subdomains.txt
Note that this is an automated tool, manual check is still required.
''') )
parser.add_argument( "-u","--url",help="url to test" )
parser.add_argument( "-s","--source",help="datas sources separated by coma, can be: censys,crtsh,local file" )
parser.parse_args()
args = parser.parse_args()
if args.url:
url = args.url
else:
parser.error( 'host is missing <www.example.com>' )
if args.source:
t_sources = args.source.split( ',' )
else:
t_sources = [ 'censys', 'crtsh', 'securitytrails' ]
if 'censys' in t_sources:
try:
CENSYS_UID = os.environ['CENSYS_UID']
CENSYS_SECRET = os.environ['CENSYS_SECRET']
except Exception as e:
t_sources.remove('censys')
print( colored("[-] error occured: CENSYS_UID or CENSYS_SECRET not found, Censys removed from sources", 'red') )
# print( "Error: %s not defined" % e )
# print( "To fix this:" )
# print( "export CENSYS_UID=xxxxxxxxxxxxxxxxxxxxxxxxxx" )
# print( "export CENSYS_SECRET=xxxxxxxxxxxxxxxxxxxxxxx" )
# exit()
if 'securitytrails' in t_sources:
try:
SECURITY_TRAILS_API_KEY = os.environ['SECURITY_TRAILS_API_KEY']
except Exception as e:
t_sources.remove('securitytrails')
print( colored("[-] error occured: SECURITY_TRAILS_API_KEY not found, SecurityTrails removed from sources", 'red') )
# print( "Error: %s not defined" % e )
# print( "To fix this:" )
# print( "export SECURITY_TRAILS_API_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxx" )
# exit()
# https://stackoverflow.com/questions/5619685/conversion-from-ip-string-to-integer-and-backward-in-python
def IP2Int(ip):
o = list( map(int, ip.split('.')) )
res = (16777216 * o[0]) + (65536 * o[1]) + (256 * o[2]) + o[3]
return res
def Int2IP(ipnum):
o1 = int(ipnum / 16777216) % 256
o2 = int(ipnum / 65536) % 256
o3 = int(ipnum / 256) % 256
o4 = int(ipnum) % 256
return '%(o1)s.%(o2)s.%(o3)s.%(o4)s' % locals()
# https://en.wikibooks.org/wiki/Algorithm_Implementation/Strings/Levenshtein_distance#Python
def levenshtein(s, t):
''' From Wikipedia article; Iterative with two matrix rows. '''
if s == t: return 0
elif len(s) == 0: return len(t)
elif len(t) == 0: return len(s)
v0 = [None] * (len(t) + 1)
v1 = [None] * (len(t) + 1)
for i in range(len(v0)):
v0[i] = i
for i in range(len(s)):
v1[0] = i + 1
for j in range(len(t)):
cost = 0 if s[i] == t[j] else 1
v1[j + 1] = min(v1[j] + 1, v0[j + 1] + 1, v0[j] + cost)
for j in range(len(v0)):
v0[j] = v1[j]
return v1[len(t)]
def grabber_crtsh( domain ):
global t_subs, t_ips
print( "[+] Grab data from crt.sh" )
n_subs = 0
n_ips = 0
url = 'https://crt.sh/?q=%25.' + domain + '&output=json'
try:
ex = 0
r = requests.get( url )
except Exception as e:
ex = 1
print( colored("[-] error occured: %s" % e, 'red') )
if ex == 0 and r.status_code == 200:
j = r.json()
for item in j:
parse = tldextract.extract( item['name_value'] )
sub = item['name_value'].replace( '*.', '' )
if sub != domain and not sub in t_subs:
n_subs = n_subs + 1
t_subs.append( sub )
try:
ex = 0
data = socket.gethostbyname( sub )
if not data in t_ips:
n_ips = n_ips + 1
t_ips.append( data )
except Exception as e:
ex = 1
print( colored("[+] %d subdomains found, %d ips added" % (n_subs,n_ips), 'green') )
def grabber_censys( domain ):
global t_subs, t_ips
print( "[+] Grab data from Censys" )
n_ips = 0
query = {"query":domain}
headers = {"Content-Type":"application/json"}
try:
ex = 0
r = requests.get( 'https://search.censys.io/api/v2/hosts/search?q='+domain, headers=headers, auth=(CENSYS_UID,CENSYS_SECRET) )
except Exception as e:
ex = 1
print( colored("[-] error occurred: %s" % e, 'red') )
if ex == 0 and r.status_code == 200:
j = r.json()
if int(j['code']) == 200 and j['status'] == 'OK' and type(j['result']) is dict and len(j['result'])>0 and type(j['result']['hits']) is list and len(j['result']['hits'])>0:
for i in j['result']['hits']:
n_ips = n_ips + 1
t_ips.append( i['ip'] )
print( colored("[+] %d ips added" % (n_ips), 'green') )
def grabber_securitytrails( domain ):
global t_subs, t_ips
print( "[+] Grab data from SecurityTrails" )
n_subs = 0
n_ips = 0
headers = {"apikey":SECURITY_TRAILS_API_KEY}
try:
ex = 0
r = requests.get( 'https://api.securitytrails.com/v1/domain/'+domain, headers=headers )
except Exception as e:
ex = 1
print( colored("[-] error occurred: %s" % e, 'red') )
if ex == 0 and r.status_code == 200:
j = r.json()
# print(j)
if 'apex_domain' in j and j['apex_domain'] == domain and 'current_dns' in j:
if 'a' in j['current_dns'] and 'values' in j['current_dns']['a']:
for value in j['current_dns']['a']['values']:
if not ip in t_ips:
n_ips = n_ips + 1
t_ips.append( value['ip'] )
if 'aaaa' in j['current_dns'] and 'values' in j['current_dns']['aaaa']:
for value in j['current_dns']['aaaa']['values']:
if not ip in t_ips:
n_ips = n_ips + 1
t_ips.append( value['ipv6'] )
if 'mx' in j['current_dns'] and 'values' in j['current_dns']['mx']:
for value in j['current_dns']['mx']['values']:
try:
data = socket.gethostbyname( value['hostname'] )
if not data in t_ips:
n_ips = n_ips + 1
t_ips.append( data )
except Exception as e:
pass
try:
ex = 0
r = requests.get( 'https://api.securitytrails.com/v1/domain/'+domain+'/subdomains', headers=headers )
except Exception as e:
ex = 1
print( colored("[-] error occurred: %s" % e, 'red') )
if ex == 0 and r.status_code == 200:
j = r.json()
# print(j)
if 'subdomain_count' in j and j['subdomain_count'] > 0 and 'subdomains' in j:
for prefix in j['subdomains']:
sub = prefix + '.' + domain
if not sub in t_subs:
n_subs = n_subs + 1
t_subs.append( sub )
try:
data = socket.gethostbyname( sub )
if not data in t_ips:
n_ips = n_ips + 1
t_ips.append( data )
except Exception as e:
pass
print( colored("[+] %d subdomains found, %d ips added" % (n_subs,n_ips), 'green') )
def readIPfromFile( domain, ipsrc ):
print( "[+] Reading datas from file: %s" % ipsrc )
n = 0
s = 0
f = open( ipsrc, 'r' )
for ip in f:
if domain in ip:
try:
ex = 0
s = s + 1
ip = socket.gethostbyname( ip.strip() )
except Exception as e:
ex = 1
ip = ''
ip = ip.strip()
if ip != '' and not ip in t_ips:
n = n + 1
t_ips.append( ip )
print( colored("[+] %d subdomains found, %d ips added" % (s,n), 'green') )
# def is_cloudflare( ip ):
# for r in r_cloudflare:
# ipn = IPNetwork( r )
# if ip in list(ipn):
# return 1
# return 0
# def is_cloudflare2( ip ):
# ip = IP2Int( str(ip) )
# for r in r_cloudflare_i:
# if ip >= r[0] and ip <= r[1]:
# return 1
# return 0
# def is_cloudflare3( ip ):
# ip = IP2Int( str(ip) )
# for r in r_cloudflare_i:
# if ip >= r[0] and ip <= r[1]:
# return 1
# return 0
# https://github.com/gwen001/cloudflare-origin-ip/pull/8
def is_cloudflare4( ip ):
# print(ip)
try:
ip_obj = ipaddress.ip_address(ip)
except ValueError:
# Handle the case when the IP address is not valid
print( colored("[-] %s: ValueError" % (ip), 'red') )
return False
for r in r_cloudflare:
if ip_obj in ipaddress.ip_network(r):
return True
return False
# def testBypass( r_reference, ip, host ):
# u = 'https://' + ip
# headers = {"Host":host}
# try:
# ex = 0
# r = requests.get( u, headers=headers, timeout=REQUEST_TIMEOUT, verify=False )
# except Exception as e:
# ex = 1
# print( colored("[-] %s: %s" % (ip,e), 'red') )
# if ex == 0:
# if not 'Content-Type' in r.headers:
# r.headers['Content-Type'] = ''
# score = responseCompare( r_reference, r )
# if score['average'] > GOOD_CANDIDATE_SCORE:
# sys.stdout.write( colored("%s" % ip, 'green') )
# sys.stdout.write( " is a GOOD candidate with an average similarity of %d%%\n" % score['average'] )
# else:
# sys.stdout.write( "%s" % ip )
# sys.stdout.write( " is not a good candidate with an average similarity of %d%%\n" % score['average'] )
# print( colored("Status=%d (%d%%), Length=%d (%d%%), Headers=%d (%d%%), Content-Type=%s (%d%%)" % (r.status_code,score['dist_status_code'],len(r.content),score['dist_content'],len(r.headers),score['dist_headers'],r.headers['Content-Type'],score['dist_content_type']), 'white') )
# def testBypass2( t_multiproc, r_reference, host, ip ):
# sys.stdout.write( 'progress: %d/%d\r' % (t_multiproc['n_current'],t_multiproc['n_total']) )
# t_multiproc['n_current'] = t_multiproc['n_current'] + 1
# u = 'https://' + ip
# headers = {"Host":host}
# headers.update( t_headers )
# try:
# r = requests.get( u, headers=headers, timeout=REQUEST_TIMEOUT, verify=False )
# except Exception as e:
# print( colored("[-] %s: %s" % (ip,e), 'red') )
# return
# if not 'Content-Type' in r.headers:
# r.headers['Content-Type'] = ''
# score = responseCompare( r_reference, r )
# if score['average'] > GOOD_CANDIDATE_SCORE:
# if is_cloudflare2( IPAddress(ip) ):
# sys.stdout.write( colored("%s" % ip, 'yellow') )
# sys.stdout.write( " is CloudFlare\n" )
# else:
# sys.stdout.write( colored("%s" % ip, 'green') )
# sys.stdout.write( " is a GOOD candidate with an average similarity of %d%%\n" % score['average'] )
# else:
# sys.stdout.write( "%s" % ip )
# sys.stdout.write( " is not a good candidate with an average similarity of %d%%\n" % score['average'] )
# print( colored("Status=%d (%d%%), Length=%d (%d%%), Headers=%d (%d%%), Content-Type=%s (%d%%)" % (r.status_code,score['dist_status_code'],len(r.content),score['dist_content'],len(r.headers),score['dist_headers'],r.headers['Content-Type'],score['dist_content_type']), 'white') )
def testBypass3( t_multiproc, r_reference, host, ip ):
sys.stdout.write( 'progress: %d/%d\r' % (t_multiproc['n_current'],t_multiproc['n_total']) )
t_multiproc['n_current'] = t_multiproc['n_current'] + 1
if is_cloudflare4( IPAddress(ip) ):
sys.stdout.write( colored("%s" % ip, 'yellow') )
sys.stdout.write( " is CloudFlare\n" )
return
u = 'https://' + ip
headers = {"Host":host}
headers.update( t_headers )
try:
r = requests.get( u, headers=headers, timeout=REQUEST_TIMEOUT, verify=False )
except Exception as e:
print( colored("[-] %s: %s" % (ip,e), 'red') )
return
if not 'Content-Type' in r.headers:
r.headers['Content-Type'] = ''
score = responseCompare( r_reference, r )
if score['average'] > GOOD_CANDIDATE_SCORE:
sys.stdout.write( colored("%s" % ip, 'green') )
sys.stdout.write( " is a GOOD candidate with an average similarity of %d%%\n" % score['average'] )
else:
sys.stdout.write( "%s" % ip )
sys.stdout.write( " is not a good candidate with an average similarity of %d%%\n" % score['average'] )
print( colored("Status=%d (%d%%), Length=%d (%d%%), Headers=%d (%d%%), Content-Type=%s (%d%%)" % (r.status_code,score['dist_status_code'],len(r.content),score['dist_content'],len(r.headers),score['dist_headers'],r.headers['Content-Type'],score['dist_content_type']), 'white') )
def responseCompare( r_reference, r ):
score = {
'dist_status_code': 0,
'dist_content_type': 0,
'dist_content': 0,
'dist_headers': 0,
'average': 0
}
if r.status_code == r_reference.status_code:
score['status_code'] = 'OK'
score['dist_status_code'] = 100
else:
score['status_code'] = 'NOK'
score['dist_status_code'] = 0
if len(r.headers['Content-Type']) > 0 and len(r_reference.headers['Content-Type']) > 0:
dist = levenshtein( r.headers['Content-Type'], r_reference.headers['Content-Type'] )
score['dist_content_type'] = 100 - ( dist*100 / len(r_reference.headers['Content-Type']) )
else:
if len(r.headers['Content-Type']) == 0 and len(r_reference.headers['Content-Type']) == 0:
score['dist_content_type'] = 100
else:
score['dist_content_type'] = 0
if len(r.content) > 0 and len(r_reference.content) > 0:
dist = levenshtein( r.content[0:COMPARE_FIRST_CHARS], r_reference.content[0:COMPARE_FIRST_CHARS] )
score['dist_content'] = 100 - ( dist*100 / len(r_reference.content[0:COMPARE_FIRST_CHARS]) )
else:
if len(r.content) == 0 and len(r_reference.content) == 0:
score['dist_content'] = 100
else:
score['dist_content'] = 100 / (len(r.content)+len(r_reference.content))
if score['dist_content'] < 0:
score['dist_content'] = 0
s_headers = ''
s_reference_headers = ''
t_sorted_keys = sorted( r_reference.headers )
for k in t_sorted_keys:
if not k in t_exclude_headers:
s_reference_headers = s_reference_headers + k + '=' + r_reference.headers[k] + ';;'
if k in r.headers:
s_headers = s_headers + k + '=' + r.headers[k] + ';;'
else:
s_headers = s_headers + k + '=;;'
# print( s_reference_headers )
# print( s_headers )
dist = levenshtein( s_headers, s_reference_headers )
score['dist_headers'] = 100 - ( dist*100 / len(s_reference_headers) )
# score['average'] = score['dist_status_code']*COEF_STATUS_CODE + score['dist_content_type']*COEF_CONTENT_TYPE + score['dist_content']*COEF_CONTENT + score['dist_headers']*COEF_HEADERS
score['average'] = score['dist_status_code'] + score['dist_content_type'] + score['dist_content'] + score['dist_headers']
score['average'] = score['average'] / 4;
return score
if not url.startswith( 'http' ):
url = 'https://'+url
t_url_parse = parse.urlparse( url )
# t_url_parse = urlparse( url )
t_host_parse = tldextract.extract( t_url_parse.netloc )
domain = host = t_host_parse.domain + '.' + t_host_parse.suffix
if len(t_host_parse.subdomain):
host = t_host_parse.subdomain + '.' + host
# print( t_url_parse )
# print( t_host_parse )
t_ips = []
t_subs = []
for s in t_sources:
if s != 'crtsh' and s != 'censys' and s != 'securitytrails':
if not os.path.isfile( s ):
print( colored("[-] source file not found: %s" % s, 'red') )
else:
readIPfromFile( domain, s )
if 'crtsh' in t_sources:
grabber_crtsh( domain )
if 'censys' in t_sources:
grabber_censys( domain )
if 'securitytrails' in t_sources:
grabber_securitytrails( domain )
t_ips = set( t_ips )
t_ips_cloudflare = []
t_ips_notcloudflare = []
t_headers = {
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:56.0) Gecko/20100101 Firefox/56.0',
}
print( "[+] %d unique ips collected" % len(t_ips) )
if len(t_ips) == 0:
exit()
print( "[+] Performing reference request..." )
try:
r_reference = requests.get( url, timeout=3, verify=False, headers=t_headers )
if not 'Content-Type' in r_reference.headers:
r_reference.headers['Content-Type'] = ''
except Exception as e:
print( colored("[-] error occured: %s" % e, 'red') )
exit()
# print(r_reference.content)
# exit()
print( colored("Status=%d, Length=%d, Headers=%d, Content-Type=%s" % (r_reference.status_code,len(r_reference.content),len(r_reference.headers),r_reference.headers['Content-Type']), 'cyan') )
print( "[+] Testing bypass..." )
###################################### VERSION 3 ######################################
t_multiproc = {
'n_current': 0,
'n_total': len(t_ips)
}
pool = Pool( MAX_THREADS )
pool.map( partial(testBypass3,t_multiproc,r_reference,host), t_ips )
pool.close()
pool.join()
exit()
###################################### VERSION 2 ######################################
for ip in set(t_ips):
if is_cloudflare2( IPAddress(ip) ):
t_ips_cloudflare.append( ip )
print( colored("%s" % ip, 'red') )
else:
t_ips_notcloudflare.append( ip )
testBypass( r_reference, ip, host )
exit()
###################################### SLOW OLD VERSION ######################################
print( "[+] Checking Cloudflare... (cpu killer)" )
for ip in set(t_ips):
if is_cloudflare( IPAddress(ip) ):
t_ips_cloudflare.append( ip )
print( colored("%s" % ip, 'white') )
else:
t_ips_notcloudflare.append( ip )
print( "%s" % ip )
print( colored("[*] %d Cloudflare ips detected" % len(t_ips_cloudflare), 'white') )
# for ip in t_ips_cloudflare:
# print( colored(ip,'white') )
print( colored("[+] %d ips not Cloudflare" % len(t_ips_notcloudflare), 'green') )
# for ip in t_ips_notcloudflare:
# print( ip )
if TEST_BYPASS:
print( "[+] Performing reference request..." )
try:
r_reference = requests.get( url, timeout=3, verify=False )
if not 'Content-Type' in r_reference.headers:
r_reference.headers['Content-Type'] = ''
except Exception as e:
print( colored("[-] error occured: %s" % e, 'red') )
exit()
print( colored("Status=%d, Length=%d, Headers=%d, Content-Type=%s" % (r_reference.status_code,len(r_reference.content),len(r_reference.headers),r_reference.headers['Content-Type']), 'cyan') )
print( "[+] Testing bypass..." )
t_threads = []
for ip in t_ips_notcloudflare:
testBypass( r_reference, ip, host )