305 lines
11 KiB
Python
Executable File
305 lines
11 KiB
Python
Executable File
#!/usr/bin/env python
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import socket
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import sys
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from argparse import ArgumentParser, SUPPRESS
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from datetime import datetime
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from ssl import PROTOCOL_TLSv1
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from time import sleep
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from csv import DictWriter
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import json
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try:
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from OpenSSL import SSL
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except ImportError:
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print('Required module does not exist. Install: pip install pyopenssl')
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sys.exit(1)
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class Clr:
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"""Text colors."""
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RST = '\033[39m'
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RED = '\033[31m'
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GREEN = '\033[32m'
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YELLOW = '\033[33m'
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def get_cert(host, port, user_args):
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"""Connection to the host."""
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if user_args.socks:
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import socks
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socks_host, socks_port = filter_hostname(user_args.socks)
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socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5, socks_host, int(socks_port), True)
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socket.socket = socks.socksocket
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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osobj = SSL.Context(PROTOCOL_TLSv1)
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sock.connect((host, int(port)))
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oscon = SSL.Connection(osobj, sock)
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oscon.set_tlsext_host_name(host.encode())
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oscon.set_connect_state()
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oscon.do_handshake()
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cert = oscon.get_peer_certificate()
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sock.close()
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return cert
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def border_msg(message):
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"""Print the message in the box."""
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row = len(message)
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h = ''.join(['+'] + ['-' * row] + ['+'])
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result = h + '\n' "|" + message + "|"'\n' + h
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print(result)
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def analyze_ssl(host, context):
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"""Analyze the security of the SSL certificate."""
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try:
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from urllib.request import urlopen
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except ImportError:
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from urllib2 import urlopen
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api_url = 'https://api.ssllabs.com/api/v3/'
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while True:
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main_request = json.loads(urlopen(api_url + 'analyze?host={}'.format(host)).read().decode('utf-8'))
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if main_request['status'] in ('DNS', 'IN_PROGRESS'):
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sleep(5)
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continue
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elif main_request['status'] == 'READY':
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break
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endpoint_data = json.loads(urlopen(api_url + 'getEndpointData?host={}&s={}'.format(
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host, main_request['endpoints'][0]['ipAddress'])).read().decode('utf-8'))
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# if the certificate is invalid
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if endpoint_data['statusMessage'] == 'Certificate not valid for domain name':
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return context
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context[host]['grade'] = main_request['endpoints'][0]['grade']
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context[host]['poodle_vuln'] = endpoint_data['details']['poodle']
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context[host]['heartbleed_vuln'] = endpoint_data['details']['heartbleed']
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context[host]['heartbeat_vuln'] = endpoint_data['details']['heartbeat']
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context[host]['freak_vuln'] = endpoint_data['details']['freak']
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context[host]['logjam_vuln'] = endpoint_data['details']['logjam']
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context[host]['drownVulnerable'] = endpoint_data['details']['drownVulnerable']
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return context
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def get_cert_sans(x509cert):
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"""
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Get Subject Alt Names from Certificate. Shameless taken from stack overflow:
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https://stackoverflow.com/users/4547691/anatolii-chmykhalo
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"""
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san = ''
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ext_count = x509cert.get_extension_count()
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for i in range(0, ext_count):
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ext = x509cert.get_extension(i)
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if 'subjectAltName' in str(ext.get_short_name()):
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san = ext.__str__()
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# replace commas to not break csv output
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san = san.replace(',', ';')
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return san
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def get_cert_info(host, cert):
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"""Get all the information about cert and create a JSON file."""
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context = {}
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cert_subject = cert.get_subject()
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context['host'] = host
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context['issued_to'] = cert_subject.CN
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context['issued_o'] = cert_subject.O
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context['issuer_c'] = cert.get_issuer().countryName
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context['issuer_o'] = cert.get_issuer().organizationName
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context['issuer_ou'] = cert.get_issuer().organizationalUnitName
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context['issuer_cn'] = cert.get_issuer().commonName
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context['cert_sn'] = str(cert.get_serial_number())
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context['cert_sha1'] = cert.digest('sha1').decode()
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context['cert_alg'] = cert.get_signature_algorithm().decode()
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context['cert_ver'] = cert.get_version()
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context['cert_sans'] = get_cert_sans(cert)
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context['cert_exp'] = cert.has_expired()
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# Valid from
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valid_from = datetime.strptime(cert.get_notBefore().decode('ascii'),
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'%Y%m%d%H%M%SZ')
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context['valid_from'] = valid_from.strftime('%Y-%m-%d')
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# Valid till
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valid_till = datetime.strptime(cert.get_notAfter().decode('ascii'),
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'%Y%m%d%H%M%SZ')
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context['valid_till'] = valid_till.strftime('%Y-%m-%d')
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# Validity days
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context['validity_days'] = (valid_till - valid_from).days
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# Validity in days from now
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now = datetime.now()
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context['days_left'] = (valid_till - now).days
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return context
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def print_status(host, context, analyze=False):
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"""Print all the usefull info about host."""
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days_left = (datetime.strptime(context[host]['valid_till'], '%Y-%m-%d') - datetime.now()).days
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print('\t{}[+]{} {}\n\t{}'.format(Clr.GREEN, Clr.RST, host, '-' * (len(host) + 5)))
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print('\t\tIssued domain: {}'.format(context[host]['issued_to']))
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print('\t\tIssued to: {}'.format(context[host]['issued_o']))
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print('\t\tIssued by: {} ({})'.format(context[host]['issuer_o'], context[host]['issuer_c']))
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print('\t\tValid from: {}'.format(context[host]['valid_from']))
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print('\t\tValid to: {} ({} days left)'.format(context[host]['valid_till'], days_left))
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print('\t\tValidity days: {}'.format(context[host]['validity_days']))
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print('\t\tCertificate S/N: {}'.format(context[host]['cert_sn']))
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print('\t\tCertificate SHA1 FP: {}'.format(context[host]['cert_sha1']))
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print('\t\tCertificate version: {}'.format(context[host]['cert_ver']))
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print('\t\tCertificate algorithm: {}'.format(context[host]['cert_alg']))
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if analyze and context.get('grade', False): # If analyze part fails
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print('\t\tCertificate grade: {}'.format(context[host]['grade']))
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print('\t\tPoodle vulnerability: {}'.format(context[host]['poodle_vuln']))
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print('\t\tHeartbleed vulnerability: {}'.format(context[host]['heartbleed_vuln']))
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print('\t\tHeartbeat vulnerability: {}'.format(context[host]['heartbeat_vuln']))
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print('\t\tFreak vulnerability: {}'.format(context[host]['freak_vuln']))
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print('\t\tLogjam vulnerability: {}'.format(context[host]['logjam_vuln']))
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print('\t\tDrown vulnerability: {}'.format(context[host]['drownVulnerable']))
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print('\t\tExpired: {}'.format(context[host]['cert_exp']))
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print('\t\tCertificate SAN\'s: ')
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for san in context[host]['cert_sans'].split(';'):
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print('\t\t \\_ {}'.format(san.strip()))
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print('\n')
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def show_result(user_args):
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"""Get the context."""
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context = {}
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failed_cnt = 0
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start_time = datetime.now()
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hosts = user_args.hosts
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if not user_args.json_true:
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border_msg(' Analyzing {} host(s) '.format(len(hosts)))
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if not user_args.json_true and user_args.analyze:
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print('{}Warning: -a/--analyze is enabled. It takes more time...{}\n'.format(Clr.YELLOW, Clr.RST))
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for host in hosts:
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host, port = filter_hostname(host)
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# Check duplication
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if host in context.keys():
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continue
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try:
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cert = get_cert(host, port, user_args)
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context[host] = get_cert_info(host, cert)
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context[host]['tcp_port'] = int(port)
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# Analyze the certificate if enabled
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if user_args.analyze:
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context = analyze_ssl(host, context)
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if not user_args.json_true:
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print_status(host, context, user_args.analyze)
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except Exception as error:
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if not user_args.json_true:
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print('\t{}[-]{} {:<20s} Failed: {}\n'.format(Clr.RED, Clr.RST, host, error))
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failed_cnt += 1
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except KeyboardInterrupt:
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print('{}Canceling script...{}\n'.format(Clr.YELLOW, Clr.RST))
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sys.exit(1)
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if not user_args.json_true:
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border_msg(' Successful: {} | Failed: {} | Duration: {} '.format(
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len(hosts) - failed_cnt, failed_cnt, datetime.now() - start_time))
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# CSV export if -c/--csv is specified
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if user_args.csv_enabled:
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export_csv(context, user_args.csv_enabled)
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# Enable JSON output if -j/--json argument specified
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if user_args.json_true:
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print(json.dumps(context))
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if user_args.json_save_true:
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for host in hosts:
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with open(host.split('.')[0] + '.json', 'w', encoding='UTF-8') as fp:
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fp.write(json.dumps(context[host]))
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def export_csv(context, filename):
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"""Export all context results to CSV file."""
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# prepend dict keys to write column headers
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with open(filename, 'w') as csv_file:
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csv_writer = DictWriter(csv_file, list(context.items())[0][1].keys())
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csv_writer.writeheader()
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for host in context.keys():
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csv_writer.writerow(context[host])
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def filter_hostname(host):
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"""Remove unused characters and split by address and port."""
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host = host.replace('http://', '').replace('https://', '').replace('/', '')
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port = 443
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if ':' in host:
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host, port = host.split(':')
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return host, port
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def get_args():
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"""Set argparse options."""
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parser = ArgumentParser(prog='ssl_checker.py', add_help=False,
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description="""Collects useful information about given host's SSL certificates.""")
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group = parser.add_mutually_exclusive_group(required=True)
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group.add_argument('-H', '--host', dest='hosts', nargs='*',
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required=False, help='Hosts as input separated by space')
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group.add_argument('-f', '--host-file', dest='host_file',
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required=False, help='Hosts as input from file')
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parser.add_argument('-s', '--socks', dest='socks',
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default=False, metavar='HOST:PORT',
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help='Enable SOCKS proxy for connection')
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parser.add_argument('-c', '--csv', dest='csv_enabled',
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default=False, metavar='FILENAME.CSV',
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help='Enable CSV file export')
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parser.add_argument('-j', '--json', dest='json_true',
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action='store_true', default=False,
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help='Enable JSON in the output')
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parser.add_argument('-J', '--json-save', dest='json_save_true',
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action='store_true', default=False,
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help='Enable JSON export individually per host')
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parser.add_argument('-a', '--analyze', dest='analyze',
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default=False, action='store_true',
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help='Enable SSL security analysis on the host')
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parser.add_argument('-h', '--help', default=SUPPRESS,
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action='help',
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help='Show this help message and exit')
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args = parser.parse_args()
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# Get hosts from file if provided
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if args.host_file:
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with open(args.host_file) as f:
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args.hosts = f.read().splitlines()
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# Checks hosts list
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if isinstance(args.hosts, list):
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if len(args.hosts) == 0:
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parser.print_help()
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sys.exit(0)
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return args
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if __name__ == '__main__':
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show_result(get_args())
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