├── .gitignore ├── LICENSE ├── README.md ├── api_keys.py ├── certcrunchy.py └── requirements.txt /.gitignore: -------------------------------------------------------------------------------- 1 | *.pyc 2 | *.log 3 | *.bak 4 | *_migration.py 5 | data/* 6 | -------------------------------------------------------------------------------- /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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Censys.oi https://censys.io 51 | 52 | 2. VirusTotal https://www.virustotal.com/en/documentation/public-api/ 53 | 54 | 3. PassiveTotal https://community.riskiq.com/registration 55 | 56 | ## Todo: 57 | 1. Better documentation 58 | -------------------------------------------------------------------------------- /api_keys.py: -------------------------------------------------------------------------------- 1 | _censys_uid = None 2 | _censys_secret = None 3 | _virustotal = None 4 | _riskiq_user = None 5 | _riskiq_key = None -------------------------------------------------------------------------------- /certcrunchy.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # -*- coding: utf-8 -*- 3 | 4 | import json 5 | import itertools 6 | import requests 7 | import socket 8 | import ssl 9 | import argparse 10 | import dns.resolver 11 | import threading 12 | import time 13 | import re 14 | import queue 15 | import ipaddress 16 | import api_keys 17 | import socket 18 | import urllib3 19 | urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) 20 | from time import sleep 21 | from tempfile import mkstemp 22 | 23 | 24 | 25 | _banner = """\033[1;33;49m 26 | _____ _ _____ _ 27 | / __ \ | | / __ \ | | 28 | | / \/ ___ _ __| |_| / \/_ __ _ _ _ __ ___| |__ _ _ 29 | | | / _ \ '__| __| | | '__| | | | '_ \ / __| '_ \| | | | 30 | | \__/\ __/ | | |_| \__/\ | | |_| | | | | (__| | | | |_| | 31 | \____/\___|_| \__|\____/_| \__,_|_| |_|\___|_| |_|\__, | 32 | __/ | 33 | |___/ 34 | \033[1;31;49mJust a silly recon tool... 35 | @_w_m__\033[0;37;49m 36 | """ 37 | 38 | _transparency_endpoint = "https://crt.sh/?q=%.{query}&output=json" 39 | _censys_endpoint = "https://www.censys.io/api/v1" 40 | _certdb_endpoint = "https://certdb.com/api?q={query}" 41 | _certspotter_endpoint = "https://certspotter.com/api/v0/certs?domain={query}" 42 | _vt_domainsearch_endpoint = "https://www.virustotal.com/vtapi/v2/domain/report" 43 | _vt_ipsearch_endpoint = "https://www.virustotal.com/vtapi/v2/ip-address/report" 44 | _riskiq_endpoint = "https://api.passivetotal.org" 45 | _potential_hosts = [] 46 | _resolving_hosts = {} 47 | _port = 443 48 | _threads = 20 49 | _delay = 3 50 | _timeout = 3 51 | 52 | 53 | def is_valid_hostname(hostname): 54 | if len(hostname) > 253: 55 | return False 56 | if hostname[-1] == ".": 57 | hostname = hostname[:-1] # Strip exactly one dot from the right, if present 58 | allowed = re.compile("(?!-)[A-Z\d-]{1,63}(? -1: 215 | name = name.split(",")[0] 216 | if is_valid_hostname(name): 217 | if not name.find("*") == 0: 218 | if name.find("." + domain) > -1: 219 | hosts.append(name) 220 | 221 | if len(res.json()["results"]) < 100: 222 | break 223 | page += 1 224 | if page == 101: 225 | print("Can't go past page 100") 226 | break 227 | 228 | except Exception as ex: 229 | print(ex) 230 | hosts = list(set(hosts)) 231 | return hosts 232 | 233 | 234 | def getTransparencyNames(domain): 235 | results = [] 236 | print("[crt.sh] Checking [{domain}]".format(domain=domain)) 237 | r = requests.get(_transparency_endpoint.format(query=domain), timeout=_timeout, verify=False) 238 | if r.status_code != 200: 239 | print(f"Results not found [{r.status_code}]") 240 | return results 241 | 242 | data = r.json() 243 | for item in data: 244 | if item['name_value'].find("*") == 0: 245 | continue 246 | results.append(item['name_value'].lower()) 247 | 248 | results = list(set(results)) 249 | results.sort() 250 | return results 251 | 252 | 253 | def getPassiveTotalNames(domain): 254 | results = [] 255 | print("[passivetotal.org] Checking [{domain}]".format(domain=domain)) 256 | auth = (api_keys._riskiq_user, api_keys._riskiq_key) 257 | endpoint = "{}/{}".format(_riskiq_endpoint, "/v2/enrichment/subdomains") 258 | data = {'query': domain} 259 | try: 260 | r = requests.get(endpoint, auth=auth, json=data, timeout=_timeout, verify=False) 261 | if r.status_code != 200: 262 | print("Results not found") 263 | return results 264 | result = r.json() 265 | if result["subdomains"]: 266 | for prefix in result["subdomains"]: 267 | results.append("{}.{}".format(prefix, domain)) 268 | except Exception as ex: 269 | print("Error [{}]".format(ex)) 270 | results = list(set(results)) 271 | results.sort() 272 | return results 273 | 274 | 275 | def getDomainVTNames(domain): 276 | results = [] 277 | print("[virustotal.com] Checking [{domain}]".format(domain=domain)) 278 | params = {"apikey": api_keys._virustotal, "domain": domain} 279 | r = requests.get(_vt_domainsearch_endpoint, params=params, timeout=_timeout, verify=False) 280 | if r.status_code != 200: 281 | print("Results not found") 282 | return results 283 | data = json.loads('[{}]'.format(r.text.replace('}{', '},{'))) 284 | for items in data: 285 | for subdomain in items["subdomains"]: 286 | results.append(subdomain.strip().lower()) 287 | 288 | results = list(set(results)) 289 | results.sort() 290 | return results 291 | 292 | 293 | def getIPVTNames(ip_range): 294 | results = [] 295 | print("[virustotal.com] Checking [{ip_range}]".format(ip_range=ip_range)) 296 | for ip in ipaddress.ip_network(ip_range): 297 | params = {"apikey": api_keys._virustotal, "ip": ip} 298 | print("Checking [{}]".format(ip)) 299 | from pprint import pprint 300 | r = requests.get(_vt_domainsearch_endpoint, params=params, timeout=_timeout, verify=False) 301 | if r.status_code != 200: 302 | pprint(r) 303 | print("Results not found") 304 | break 305 | from pprint import pprint 306 | data = json.loads(r.text) 307 | if data["response_code"] == 1: 308 | for subdomain in data["resolutions"]: 309 | results.append(subdomain["hostname"].strip().lower()) 310 | sleep(15) 311 | 312 | results = list(set(results)) 313 | results.sort() 314 | return results 315 | 316 | 317 | def getIPReverseLookup(ip_range): 318 | results = [] 319 | print("[PTR names] Checking [{ip_range}]".format(ip_range=ip_range)) 320 | for ip in ipaddress.ip_network(ip_range): 321 | try: 322 | (name, l_arpa, l_ip, )=socket.gethostbyaddr(str(ip)) 323 | results.append(name.strip().lower()) 324 | except socket.herror: 325 | pass 326 | 327 | results = list(set(results)) 328 | results.sort() 329 | return results 330 | 331 | 332 | def getCertDBNames(domain): 333 | results = [] 334 | print("[CertDB] Checking [{domain}]".format(domain=domain)) 335 | r = requests.get(_certdb_endpoint.format(query=domain), timeout=_timeout, verify=False) 336 | if r.status_code != 200: 337 | print("Results not found") 338 | return results 339 | 340 | data = json.loads('[{}]'.format(r.text.replace('}{', '},{')), strict=False) 341 | for certs in data: 342 | for cert in certs: 343 | if "subject" in cert: 344 | cn = cert["subject"]["CN"].lower() 345 | if cn.find("*") > -1: 346 | cn = cn[2:] 347 | results.append(cn) 348 | if "extensions" in cert: 349 | if "subjectAltName" in cert["extensions"]: 350 | altnames = cert["extensions"]["subjectAltName"].split(",") 351 | if altnames: 352 | if len(altnames) > 0: 353 | for b in altnames: 354 | aname = b.split(":")[1].lower() 355 | if aname.find("*") > -1: 356 | aname = aname[2:] 357 | results.append(aname) 358 | 359 | results = list(set(results)) 360 | results.sort() 361 | return results 362 | 363 | 364 | def getCertSpotterNames(domain): 365 | results = [] 366 | print("[CertSpotter] Checking [{domain}]".format(domain=domain)) 367 | r = requests.get(_certspotter_endpoint.format(query=domain, timeout=_timeout), verify=False) 368 | if r.status_code != 200: 369 | print("Results not found") 370 | return results 371 | 372 | data = json.loads(r.text, strict=False) 373 | for certs in data: 374 | for names in certs["dns_names"]: 375 | if names.find("*") > -1: 376 | names = names[2:] 377 | results.append(names) 378 | 379 | results = list(set(results)) 380 | results.sort() 381 | return results 382 | 383 | 384 | if __name__ == "__main__": 385 | print(_banner) 386 | parser = argparse.ArgumentParser() 387 | parser.add_argument('-d', '--domain', type=str, help="Domain to check") 388 | parser.add_argument('-D', '--domains', type=str, help="File containing the domains to check") 389 | parser.add_argument('-i', '--iprange', type=str, help="IP range to check certificates of eg. 10.0.0.0/24") 390 | parser.add_argument('-o', '--output', type=str, help="Results file") 391 | parser.add_argument('-f', '--format', type=str, help="Output format [csv/json] defaut csv", default="csv") 392 | parser.add_argument('-t', '--delay', type=int, help="Delay between quering online services", default=3) 393 | parser.add_argument('-T', '--threads', type=int, help="Number of concurrent threads", default=20) 394 | parser.add_argument('-p', '--port', type=int, help="Port to connect to for SSL cert", default=443) 395 | parser.add_argument('-V', '--virustotal', action="store_true", help="When using an IP range and VT api is set, query VT for IP #WARNING, it takes a long time", default=False) 396 | parser.add_argument('-O', '--request-timeout', type=int, help="The HTTP timeout for requesting data from APIs in secords", default=10) 397 | args = parser.parse_args() 398 | 399 | _port = args.port 400 | _threads = args.threads 401 | _domains = [] 402 | _delay = args.delay 403 | _timeout = args.request_timeout 404 | 405 | if not args.domain and not args.domains and not args.iprange: 406 | print("Requires either domain, domain list or ip range") 407 | exit() 408 | 409 | if args.domain: 410 | _domains.append(args.domain) 411 | if args.domains: 412 | for domain in open(args.domains).read().split("\n"): 413 | if len(domain) > 3: 414 | _domains.append(domain) 415 | 416 | if len(_domains) < 1 and not args.iprange: 417 | print("We need some domains to work with.") 418 | exit() 419 | 420 | 421 | for domain in _domains: 422 | # Start with crt.sh 423 | try: 424 | _potential_hosts = _potential_hosts + getTransparencyNames(domain) 425 | except Exception as crtEx: 426 | print("API [crt.sh] request failed [{}]".format(crtEx)) 427 | # Next check CertDB 428 | try: 429 | _potential_hosts = _potential_hosts + getCertDBNames(domain) 430 | except Exception as certDBEx: 431 | print("API [CertDB] request failed [{}]".format(certDBEx)) 432 | # Next check CertSpotter 433 | try: 434 | _potential_hosts = _potential_hosts+ getCertSpotterNames(domain) 435 | except Exception as certDBEx: 436 | print("API [CertSpotter] request failed [{}]".format(certDBEx)) 437 | # Next, if API key is set for Censys, then do that 438 | if api_keys._censys_uid and api_keys._censys_secret: 439 | try: 440 | _potential_hosts = _potential_hosts + getCensysNames(domain) 441 | except Exception as censysEx: 442 | print("API [CenSys.io] request failed [{}]".format(censysEx)) 443 | if api_keys._virustotal: 444 | try: 445 | _potential_hosts = _potential_hosts + getDomainVTNames(domain) 446 | except Exception as vtEx: 447 | print("API [VirusTotal] request failed [{}]".format(vtEx)) 448 | if api_keys._riskiq_user and api_keys._riskiq_key: 449 | try: 450 | _potential_hosts = _potential_hosts + getPassiveTotalNames(domain) 451 | except Exception as ptEx: 452 | print("API [passivetotal.org] request failed [{}]".format(ptEx)) 453 | sleep(_delay) 454 | 455 | if args.iprange: 456 | _potential_hosts = getNamesFromIps(args.iprange) 457 | _potential_hosts = _potential_hosts + getIPReverseLookup(args.iprange) 458 | if api_keys._virustotal and args.virustotal: 459 | _potential_hosts = getIPVTNames(args.iprange) 460 | 461 | print("Checking potential hostnames for DNS A records") 462 | 463 | threads = [] 464 | q = queue.Queue() 465 | for h in _potential_hosts: 466 | q.put(h) 467 | r = queue.Queue() 468 | 469 | for i in range(_threads): 470 | worker = dnsThread(q, r) 471 | worker.setDaemon(True) 472 | worker.start() 473 | threads.append(worker) 474 | 475 | while not q.empty(): 476 | time.sleep(1) 477 | 478 | for worker in threads: 479 | worker.stop() 480 | 481 | for worker in threads: 482 | worker.join() 483 | 484 | for _host in list(r.queue): 485 | _resolving_hosts[_host["host"]] = _host["ips"] 486 | 487 | if args.output: 488 | with open(args.output, "w") as f: 489 | if args.format == "csv": 490 | for _host in _resolving_hosts: 491 | f.write("{},{}\n".format(_host, ",".join(_resolving_hosts[_host]))) 492 | else: 493 | json.dump(_resolving_hosts, f) 494 | f.close() 495 | print("Found [{count}] resolving hostnames".format(count=len(_resolving_hosts))) 496 | for _host in _resolving_hosts: 497 | print("[Resolving] {host} => [{ips}]".format(host=_host, ips=", ".join(_resolving_hosts[_host]))) 498 | print("") 499 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | requests==2.22.0 2 | dnspython==1.15.0 3 | --------------------------------------------------------------------------------