├── data └── test.txt ├── requirements.txt ├── screen.png ├── install.sh ├── Dockerfile ├── README.md ├── asnrecon.py └── LICENSE /data/test.txt: -------------------------------------------------------------------------------- 1 | test file 2 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | pyasn 2 | pyOpenSSL 3 | -------------------------------------------------------------------------------- /screen.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/orlyjamie/asnrecon/HEAD/screen.png -------------------------------------------------------------------------------- /install.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | pip install pyasn 3 | pip install pyOpenSSL 4 | 5 | wget https://raw.githubusercontent.com/hadiasghari/pyasn/master/pyasn-utils/pyasn_util_download.py 6 | wget https://raw.githubusercontent.com/hadiasghari/pyasn/master/pyasn-utils/pyasn_util_convert.py 7 | 8 | python pyasn_util_download.py --latest 9 | export RIBFILE=$(ls *.bz2) && python pyasn_util_convert.py --single $RIBFILE rib.dat 10 | 11 | wget https://raw.githubusercontent.com/orlyjamie/asnrecon/master/asnrecon.py 12 | -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | FROM python:2 2 | 3 | WORKDIR /opt/asnrecon 4 | 5 | RUN pip install pyasn 6 | RUN pip install pyOpenSSL 7 | 8 | RUN wget https://raw.githubusercontent.com/hadiasghari/pyasn/master/pyasn-utils/pyasn_util_download.py 9 | RUN wget https://raw.githubusercontent.com/hadiasghari/pyasn/master/pyasn-utils/pyasn_util_convert.py 10 | 11 | RUN python pyasn_util_download.py --latest 12 | RUN ls -la 13 | 14 | RUN RIBFILE=$(ls *.bz2) && python pyasn_util_convert.py --single $RIBFILE rib.dat 15 | 16 | RUN wget https://raw.githubusercontent.com/orlyjamie/asnrecon/master/asnrecon.py 17 | 18 | CMD python asnrecon.py 19 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ASNRECON 2 | [![License: Apache](https://img.shields.io/github/license/orlyjamie/asnrecon)](https://img.shields.io/github/license/orlyjamie/asnrecon) 3 | 4 | A tool to perform reconaissance using autonomous system number (ASN) lookups combined with SSL cert scanning 📡 5 | 6 | ![](https://raw.githubusercontent.com/orlyjamie/asnrecon/master/screen.png) 7 | 8 | ## Usage 9 | 10 | ``` 11 | usage: python asnrecon.py 12 | 13 | Select an option: 14 | [1] Full ASN scan 15 | [2] Specific IPv4 range scan 16 | ``` 17 | 18 | - Full ASN scan 19 | 20 | Using this option, the script will take a single domain/hostname which it will then perform a lookup against the local ASN database and select a list of IP ranges associated with that ASN. 21 | 22 | `Note:` The script can take an input file `main.config` which can be used to prevent scanning specific IP ranges. IP addresses to be avoided should be supplied in a comma delimited format. 23 | 24 | - Specific IPv4 range scan 25 | 26 | This option accepts an IP address range `0.0.0.0/0` and attempt to perform SSL connections while printing any identified certs 27 | 28 | ## Installation 29 | 1. `pip install -r requirements.txt` 30 | 2. `wget https://raw.githubusercontent.com/hadiasghari/pyasn/master/pyasn-utils/pyasn_util_download.py` 31 | 3. `wget https://raw.githubusercontent.com/hadiasghari/pyasn/master/pyasn-utils/pyasn_util_convert.py` 32 | 4. `python pyasn_util_download.py --latest` 33 | 5. `python pyasn_util_convert.py --single RIBFILE rib.dat` 34 | 35 | Alternatively just run the installer (installer.sh) 36 | `sh install.sh` 37 | -------------------------------------------------------------------------------- /asnrecon.py: -------------------------------------------------------------------------------- 1 | #https://github.com/orlyjamie 2 | 3 | from OpenSSL.crypto import FILETYPE_PEM, load_certificate 4 | from os import listdir, makedirs, remove, system 5 | from shutil import rmtree 6 | from socket import gaierror, gethostbyname, setdefaulttimeout 7 | from ssl import get_server_certificate, socket_error 8 | from threading import Lock, Thread 9 | from traceback import format_exc 10 | 11 | 12 | # noinspection SpellCheckingInspection 13 | ASNDB_FILE_NAME = 'rib.dat' 14 | BLACKLIST_FILE_NAME = 'main.config' 15 | DEFAULT_SOCKET_TIMEOUT = 5 # seconds 16 | NUMBER_OF_THREADS = 50 # FIXME edit this if you want to change the number of threads the script uses 17 | TMP_DIR_NAME = './temp' 18 | USE_CURL = True # if set to True then uses curl to get cert info 19 | 20 | 21 | class IPPool(object): 22 | """ The class that holds and manages the given ip pool. """ 23 | 24 | def __init__(self, *ip_ranges): 25 | assert len(ip_ranges) > 0, 'List of ip ranges is empty.' 26 | 27 | self.lock = Lock() 28 | self._ip_ranges = list(ip_ranges) 29 | self._ip_ranges_info = {} 30 | 31 | for ip_range in self._ip_ranges: 32 | base_ip, mask = ip_range.split('/') 33 | mask = int(mask) 34 | 35 | self._ip_ranges_info[ip_range] = {'base_ip_parts': map(int, base_ip.split('.')), 36 | 'caption': ip_range, 37 | 'filename': '%s(%d)_domains.txt' % (base_ip, mask), 38 | 'length': 2 ** (32 - mask)} 39 | 40 | self._current_element_in_range = 1 41 | self._current_ip_range = 0 42 | self._exhausted = False 43 | 44 | def get_next_ip(self): 45 | """ Thread-safe method. Use it for override in sub-class. """ 46 | with self.lock: 47 | return self._get_next_ip() 48 | 49 | def _get_next_ip(self): 50 | """ Thread-unsafe method to get next ip of range. Returns dict with ip info or None if exhausted. """ 51 | if self._exhausted is False: 52 | # 1. fetching current ip info (all data are set up from the previous time) 53 | ip_range = self._ip_ranges[self._current_ip_range] 54 | ip_range_info = self._ip_ranges_info[ip_range] 55 | result = {'caption': ip_range_info['caption'] if self._current_element_in_range == 1 else None, 56 | 'filename': ip_range_info['filename'], 57 | 'ip': [ip_range_info['base_ip_parts'][j] + 58 | (self._current_element_in_range // 256 ** (3 - j)) % 256 59 | for j in range(4)]} 60 | 61 | # 2. setting up data for the next fetch 62 | self._current_element_in_range += 1 # moving to the next one 63 | if self._current_element_in_range % 256 == 0: # ips like x.x.x.0 are omitted for they are not valid 64 | self._current_element_in_range += 1 65 | 66 | if self._current_element_in_range >= ip_range_info['length']: # current range is exhausted 67 | self._current_element_in_range = 1 68 | self._current_ip_range += 1 69 | if self._current_ip_range >= len(self._ip_ranges): # all ranges are exhausted 70 | self._exhausted = True 71 | 72 | # 3. actual result 73 | return result 74 | 75 | def resolve_ip_ranges(self): 76 | thread_pool = [] 77 | 78 | for _ in range(NUMBER_OF_THREADS): 79 | worker = IPResolverWorker(self, self.lock) 80 | worker.daemon = True 81 | worker.start() 82 | thread_pool.append(worker) 83 | 84 | try: 85 | [i.join() for i in thread_pool] 86 | except KeyboardInterrupt: 87 | print('Terminating...') 88 | else: 89 | print('Finished.') 90 | 91 | 92 | # noinspection SpellCheckingInspection 93 | class IPPoolASN(IPPool): 94 | """ The class that builds ip pool by the given hostname. """ 95 | 96 | def __init__(self, hostname): 97 | try: 98 | from pyasn import pyasn 99 | except ImportError: 100 | system('pip install pyasn') 101 | from pyasn import pyasn 102 | 103 | try: 104 | asndb = pyasn(ASNDB_FILE_NAME) 105 | except IOError: 106 | print('File "%s" is missing. Setup? [y/n]' % ASNDB_FILE_NAME) 107 | if str(raw_input()).strip().lower() == 'y': 108 | self._install_asndb() 109 | asndb = pyasn(ASNDB_FILE_NAME) 110 | else: 111 | raise RuntimeError('File "%s" not found.' % ASNDB_FILE_NAME) 112 | 113 | try: 114 | main_ip = gethostbyname(hostname) 115 | except gaierror: 116 | raise RuntimeError('Couldn''t get ip for host %s.' % hostname) 117 | 118 | try: 119 | self._ignored_ranges = [] 120 | with open(BLACKLIST_FILE_NAME, 'r') as f: 121 | for i in f.read().split(','): 122 | ignored_ip_range = i.strip() 123 | if ignored_ip_range: 124 | self._ignored_ranges.append(self._ip_range_to_range(ignored_ip_range)) 125 | except IOError: 126 | print('File "%s" is missing, ips will not be ignored.' % BLACKLIST_FILE_NAME) 127 | 128 | ip_ranges = sorted(asndb.get_as_prefixes(asndb.lookup(main_ip)[0])) 129 | print('Found ranges %s' % ip_ranges) 130 | 131 | super(IPPoolASN, self).__init__(*ip_ranges) 132 | 133 | def get_next_ip(self): 134 | with self.lock: 135 | result = self._get_next_ip() 136 | while result is not None and self._ip_is_ignored(result['ip']): 137 | result = self._get_next_ip() 138 | return result 139 | 140 | @staticmethod 141 | def _install_asndb(): 142 | """ Trying to download and install ASN database. """ 143 | existing_files = set(listdir('.')) 144 | system('python pyasn_util_download.py --latest') 145 | rib_file_name = (set(listdir('.')) - existing_files).pop() 146 | system('python pyasn_util_convert.py --single %s %s' % (rib_file_name, ASNDB_FILE_NAME)) 147 | remove(rib_file_name) 148 | 149 | @staticmethod 150 | def _ip_range_to_range(ip_range): 151 | """ Converts ip range with subnet to 2 lists: minimum and maximum ip of the range. """ 152 | base_ip, mask = ip_range.split('/') 153 | base_ip_parts = map(int, base_ip.split('.')) 154 | length = 2 ** (32 - int(mask)) 155 | 156 | ip1 = [i for i in base_ip_parts] 157 | ip2 = [base_ip_parts[i] + (length // 256 ** (3 - i)) % 256 for i in range(4)] 158 | 159 | return ip1, ip2 160 | 161 | def _ip_is_ignored(self, ip): 162 | for ignored_range in self._ignored_ranges: 163 | if ignored_range[0] <= ip <= ignored_range[1]: 164 | return True 165 | return False 166 | 167 | 168 | class IPResolverWorker(Thread): 169 | """ Thread that uses ip queue and resolves ip to names. """ 170 | 171 | _curl_param_str = '''curl -kvv --connect-timeout %(timeout)d --silent https://%(ip)s 2>&1 | awk 'BEGIN { FS = "CN="} ; {print $2}' | awk 'NF' | awk 'FNR%%2' > %(out_file)s''' 172 | _use_curl = USE_CURL 173 | 174 | def __init__(self, generator, lock): 175 | super(IPResolverWorker, self).__init__() 176 | self.generator = generator 177 | self.lock = lock 178 | 179 | # noinspection PyBroadException 180 | def run(self): 181 | while True: 182 | try: 183 | ip_info = self.generator.get_next_ip() 184 | if ip_info is not None: 185 | if ip_info['caption'] is not None: 186 | with self.lock: 187 | print('Testing %s...' % ip_info['caption']) 188 | 189 | ip = '.'.join(str(i) for i in ip_info['ip']) 190 | resolved = self.resolve_name_for_ip(ip) 191 | 192 | if resolved: 193 | with open(ip_info['filename'], 'a+') as f, self.lock: 194 | f.write('https://%s - %s\n' % (ip, resolved)) 195 | f.flush() 196 | 197 | print('[*] Domain found - https://%s - %s' % (ip, resolved)) 198 | else: 199 | return 200 | except: 201 | print(format_exc()) 202 | 203 | def resolve_name_for_ip(self, ip): 204 | """ Trying to resolve hostname for the given ip. Returns resolved name or nothing if couldn't. """ 205 | if self._use_curl: 206 | # sick way to get server certificate 207 | out_file_name = '%s/%d' % (TMP_DIR_NAME, self.ident) 208 | system(self._curl_param_str % {'ip': ip, 209 | 'out_file': out_file_name, 210 | 'timeout': DEFAULT_SOCKET_TIMEOUT}) 211 | 212 | with open(out_file_name, 'r') as f: 213 | content = f.read().strip() 214 | if content: 215 | return content.split(';')[0] 216 | else: 217 | # usual way to get server certificate 218 | try: 219 | pem = get_server_certificate((ip, 443)) 220 | except socket_error: 221 | pass 222 | else: 223 | if pem: 224 | for cid, val in load_certificate(FILETYPE_PEM, pem).get_subject().get_components(): 225 | if cid == 'CN': 226 | return val 227 | 228 | 229 | if __name__ == '__main__': 230 | setdefaulttimeout(DEFAULT_SOCKET_TIMEOUT) 231 | 232 | # noinspection PyBroadException 233 | try: 234 | makedirs(TMP_DIR_NAME) 235 | 236 | print('Select an option:\n\t[1] Full ASN scan\n\t[2] Specific IPv4 range scan') 237 | selected = str(raw_input()).strip() 238 | 239 | if selected == '1': 240 | arg = str(raw_input('Please input the host name: ')).strip() 241 | cls = IPPoolASN 242 | elif selected == '2': 243 | arg = str(raw_input('Please input the ip range (like 104.36.195.0/24): ')).strip() 244 | cls = IPPool 245 | else: 246 | raise RuntimeError('Unknown option: "%s".' % selected) 247 | 248 | cls(arg).resolve_ip_ranges() 249 | except RuntimeError as e: 250 | print(e.message) 251 | except SystemExit: 252 | pass 253 | except: 254 | print(format_exc()) 255 | finally: 256 | rmtree(TMP_DIR_NAME, ignore_errors=True) 257 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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