86 lines
2.7 KiB
Python
Executable File
86 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import csv
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import ipaddress
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import logging
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from generator import download_to_file, get_version, write_to_file, get_abspath_source_file
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def process(file):
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lipv4, lipv6, lhostname = get_lists(file)
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# Public DNS Domains
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publicdns_hostname_dst = 'public-dns-hostname'
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publicdns_hostname_warninglist = {
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'description': 'Event contains one or more public DNS resolvers (expressed as hostname) as attribute with an IDS flag set',
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'name': 'List of known public DNS resolvers expressed as hostname',
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'type': 'hostname',
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'matching_attributes': ['hostname', 'domain', 'url', 'domain|ip']
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}
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generate(lhostname, publicdns_hostname_warninglist, publicdns_hostname_dst)
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# Public DNS IPv4
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publicdns_ipv4_dst = 'public-dns-v4'
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publicdns_ipv4_warninglist = {
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'description': 'Event contains one or more public IPv4 DNS resolvers as attribute with an IDS flag set',
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'name': 'List of known IPv4 public DNS resolvers',
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'type': 'string',
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'matching_attributes': ['ip-src', 'ip-dst', 'domain|ip']
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}
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generate(lipv4, publicdns_ipv4_warninglist, publicdns_ipv4_dst)
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# Public DNS IPv4
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publicdns_ipv6_dst = 'public-dns-v6'
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publicdns_ipv6_warninglist = {
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'description': 'Event contains one or more public IPv6 DNS resolvers as attribute with an IDS flag set',
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'name': 'List of known IPv6 public DNS resolvers',
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'type': 'string',
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'matching_attributes': ['ip-src', 'ip-dst', 'domain|ip']
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}
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generate(lipv6, publicdns_ipv6_warninglist, publicdns_ipv6_dst)
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def generate(data_list, warninglist, dst):
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warninglist['version'] = get_version()
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warninglist['list'] = data_list
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write_to_file(warninglist, dst)
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def get_lists(file):
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with open(get_abspath_source_file(file)) as csv_file:
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servers_list = csv.reader(csv_file, delimiter=',', quotechar='"')
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lipv4 = []
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lipv6 = []
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lhostname = []
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for row in servers_list:
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if row[7] in (None, ""):
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try:
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ip = ipaddress.ip_address(row[0])
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if ip.version == 4:
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lipv4.append(ip.compressed)
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elif ip.version == 6:
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lipv6.append(ip.compressed)
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if row[1] not in (None, "", '.'):
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lhostname.append(row[1])
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except ValueError as exc:
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logging.warning(str(exc))
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return lipv4, lipv6, lhostname
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if __name__ == '__main__':
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publicdns_url = 'https://public-dns.info/nameservers.csv'
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publicdns_file = 'public-dns-nameservers.csv'
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download_to_file(publicdns_url, publicdns_file)
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process(publicdns_file)
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