def requests_sniffer(source_mac_address):
# region Set network filter
network_filters = {'Ethernet': {'source': source_mac_address}}
# endregion
# region Start sniffer
sniff = Sniff_raw()
sniff.start(
protocols=['ARP', 'IP', 'IPv6', 'ICMPv6', 'UDP', 'DNS', 'DHCP'],
prn=requests_sniffer_prn,
filters=network_filters)
def dhcp_request_sniffer():
# region Set network filter
network_filters = {'Ethernet': {'source': target_mac_address}}
# endregion
# region Start sniffer
sniff = Sniff_raw()
global raw_socket
raw_socket = socket(AF_PACKET, SOCK_RAW)
raw_socket.bind((listen_network_interface, 0))
sniff.start(protocols=['IP', 'IPv6', 'ICMPv6', 'ARP', 'UDP', 'DNS', 'DHCP', 'DHCPv6'],
prn=dhcp_request_sniffer_prn, filters=network_filters)
def _sniff_packets(
self,
destination_mac_address, # type: str
destination_ipv4_address, # type: str
destination_ipv6_address, # type: str
source_port=53 # type: int
):
# type: (...) -> None
"""
Sniff DNS answers
:param destination_mac_address: Destination MAC address in DNS answer (most likely this is MAC address on your network interface)
:param destination_ipv4_address: Destination IPv4 address in DNS answer (most likely this is IPv4 address on your network interface)
:param destination_ipv6_address: Destination IPv6 address in DNS answer (most likely this is IPv6 address on your network interface)
:param source_port: Source UDP port in DNS answer (default: 53 - default port for DNS servers)
:return: None
"""
network_filters = {
'Ethernet': {
'destination': destination_mac_address
},
'IP': {
'destination-ip': destination_ipv4_address
},
'IPv6': {
'destination-ip': destination_ipv6_address
},
'UDP': {
'source-port': source_port
}
}
sniff = Sniff_raw()
sniff.start(protocols=['Ethernet', 'IP', 'IPv6', 'UDP', 'DNS'],
prn=self._parse_packet,
filters=network_filters)
class DnsServer:
# region Set variables
base = None
sniff = None
dns = None
rawSocket = None
network_interface = None
port = 0
your_mac_address = None
your_ip_address = None
your_ipv6_addresses = None
target_ip_address = None
target_ipv6_address = None
fake_answers = False
fake_domains = []
fake_addresses = {}
no_such_names = []
DNS_QUERY_TYPES = []
A_DNS_QUERY = 0
AAAA_DNS_QUERY = 0
success_domains = []
# endregion
# region Init
def __init__(self):
self.base = Base()
self.sniff = Sniff_raw()
self.dns = DNS_raw()
self.rawSocket = socket(AF_PACKET, SOCK_RAW)
self.port = 53
self.A_DNS_QUERY = 1
self.AAAA_DNS_QUERY = 28
# endregion
# region Get first IPv4 or IPv6 address of domain
@staticmethod
def _get_domain_address(query_name, query_type=1):
# Set proto
if query_type == 28:
proto = AF_INET6
else:
proto = AF_INET
try:
# Get list of addresses
addresses = getaddrinfo(query_name, None, proto)
# Return first address from list
return [addresses[0][4][0]]
except gaierror:
# Could not resolve name
return None
# endregion
# region DNS reply function
def _reply(self, request):
# region This request is DNS query
if 'DNS' in request.keys():
for request_query in request['DNS']['queries']:
# region Get DNS query type
query_type = request_query['type']
# endregion
# region Type of DNS query type: A or AAAA
if query_type in self.DNS_QUERY_TYPES:
try:
# region Local variables
query_class = request_query['class']
answer = []
addresses = None
# endregion
# region Create query list
if request_query['name'].endswith("."):
query_name = request_query['name'][:-1]
else:
query_name = request_query['name']
query = [{
"type": query_type,
"class": query_class,
"name": query_name
}]
# endregion
# region Script arguments condition check
# region Variable fake_answers is True
if self.fake_answers:
addresses = self.fake_addresses[query_type]
# endregion
# region Variable fake_answers is False
else:
# region Fake domains list is set
if len(self.fake_domains) > 0:
# region Fake domains list is set and DNS query name in fake domains list
if query_name in self.fake_domains:
# region A DNS query
if query_type == self.A_DNS_QUERY:
# Fake IPv4 is set
if self.A_DNS_QUERY in self.fake_addresses.keys(
):
if len(self.fake_addresses[
self.A_DNS_QUERY]) > 0:
addresses = self.fake_addresses[
self.A_DNS_QUERY]
# Fake IPv4 is NOT set
else:
addresses = self._get_domain_address(
query_name, query_type)
# endregion
# region AAAA DNS query
if query_type == self.AAAA_DNS_QUERY:
# Fake IPv6 is set
if self.AAAA_DNS_QUERY in self.fake_addresses.keys(
):
if len(self.fake_addresses[
self.AAAA_DNS_QUERY]) > 0:
addresses = self.fake_addresses[
self.AAAA_DNS_QUERY]
# Fake IPv6 is NOT set
else:
addresses = self._get_domain_address(
query_name, query_type)
# endregion
# endregion
# region Fake domains list is set and DNS query name NOT in fake domains list
else:
addresses = self._get_domain_address(
query_name, query_type)
# endregion
# endregion
# region Fake domains list is NOT set
else:
# region A DNS query
if query_type == self.A_DNS_QUERY:
# Fake IPv4 is set
if self.A_DNS_QUERY in self.fake_addresses.keys(
):
if len(self.fake_addresses[
self.A_DNS_QUERY]) > 0:
addresses = self.fake_addresses[
self.A_DNS_QUERY]
# Fake IPv4 is NOT set
else:
addresses = self._get_domain_address(
query_name, query_type)
# endregion
# region AAAA DNS query
if query_type == self.AAAA_DNS_QUERY:
# Fake IPv6 is set
if self.AAAA_DNS_QUERY in self.fake_addresses.keys(
):
if len(self.fake_addresses[
self.AAAA_DNS_QUERY]) > 0:
addresses = self.fake_addresses[
self.AAAA_DNS_QUERY]
# Fake IPv6 is NOT set
else:
addresses = self._get_domain_address(
query_name, query_type)
# endregion
# endregion
# endregion
# endregion
# region Query name in no_such_names list
if query_name in self.no_such_names:
addresses = ['no such name']
# endregion
# region Answer addresses is set
if addresses is not None:
# region Create answer list
dns_answer_flags = 0x8580
for address in addresses:
if address == 'no such name':
dns_answer_flags = 0x8183
answer = []
break
else:
answer.append({
"name": query_name,
"type": query_type,
"class": query_class,
"ttl": 0xffff,
"address": address
})
# endregion
# region Make dns answer packet
if 'IP' in request.keys():
dns_answer_packet = self.dns.make_response_packet(
src_mac=request['Ethernet']['destination'],
dst_mac=request['Ethernet']['source'],
src_ip=request['IP']['destination-ip'],
dst_ip=request['IP']['source-ip'],
src_port=53,
dst_port=request['UDP']['source-port'],
tid=request['DNS']['transaction-id'],
flags=dns_answer_flags,
queries=query,
answers_address=answer)
elif 'IPv6' in request.keys():
dns_answer_packet = self.dns.make_response_packet(
src_mac=request['Ethernet']['destination'],
dst_mac=request['Ethernet']['source'],
src_ip=request['IPv6']['destination-ip'],
dst_ip=request['IPv6']['source-ip'],
src_port=53,
dst_port=request['UDP']['source-port'],
tid=request['DNS']['transaction-id'],
flags=dns_answer_flags,
queries=query,
answers_address=answer)
else:
dns_answer_packet = None
# endregion
# region Send DNS answer packet
if dns_answer_packet is not None:
self.rawSocket.send(dns_answer_packet)
# endregion
# region Print info message
if 'IP' in request.keys():
if query_type == 1:
if query_name in self.success_domains:
self.base.print_success(
"DNS query from: ",
request['IP']['source-ip'], " to ",
request['IP']['destination-ip'],
" type: ", "A", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
else:
self.base.print_info(
"DNS query from: ",
request['IP']['source-ip'], " to ",
request['IP']['destination-ip'],
" type: ", "A", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
if query_type == 28:
if query_name in self.success_domains:
self.base.print_success(
"DNS query from: ",
request['IP']['source-ip'], " to ",
request['IP']['destination-ip'],
" type: ", "AAAA", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
else:
self.base.print_info(
"DNS query from: ",
request['IP']['source-ip'], " to ",
request['IP']['destination-ip'],
" type: ", "AAAA", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
if 'IPv6' in request.keys():
if query_type == 1:
if query_name in self.success_domains:
self.base.print_success(
"DNS query from: ",
request['IPv6']['source-ip'],
" to ",
request['IPv6']['destination-ip'],
" type: ", "A", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
else:
self.base.print_info(
"DNS query from: ",
request['IPv6']['source-ip'],
" to ",
request['IPv6']['destination-ip'],
" type: ", "A", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
if query_type == 28:
if query_name in self.success_domains:
self.base.print_success(
"DNS query from: ",
request['IPv6']['source-ip'],
" to ",
request['IPv6']['destination-ip'],
" type: ", "AAAA", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
else:
self.base.print_info(
"DNS query from: ",
request['IPv6']['source-ip'],
" to ",
request['IPv6']['destination-ip'],
" type: ", "AAAA", " domain: ",
query_name, " answer: ",
(", ".join(addresses)))
# endregion
# endregion
except:
pass
# endregion
# endregion
# endregion
# region Start server
def listen(self,
listen_network_interface,
listen_port=53,
target_mac_address=None,
target_ip_address=None,
target_ipv6_address=None,
fake_answers=False,
fake_ip_addresses=[],
fake_ipv6_addresses=[],
fake_domains=[],
no_such_names=[],
listen_ipv6=False,
disable_ipv4=False,
disable_ipv6=False,
success_domains=[]):
# region Set success domains
self.success_domains = success_domains
# endregion
# region Set fake answers
self.fake_answers = fake_answers
# endregion
# region Set DNS_QUERY_TYPES
if listen_ipv6:
if disable_ipv4:
self.DNS_QUERY_TYPES = [28]
else:
if disable_ipv6:
self.DNS_QUERY_TYPES = [1]
else:
self.DNS_QUERY_TYPES = [1, 28]
else:
self.DNS_QUERY_TYPES = [1]
# endregion
# region Set listen network interface
self.network_interface = listen_network_interface
# endregion
# region Set listen UDP port
if listen_port != 53:
if 0 < listen_port < 65535:
self.port = listen_port
else:
self.base.print_error("Bad value in `listen_port`: ",
str(listen_port),
"; listen UDP port must be in range: ",
"1 - 65534")
exit(1)
# endregion
# region Get your MAC, IP and IPv6 addresses
self.your_mac_address = self.base.get_netiface_mac_address(
self.network_interface)
if self.your_mac_address is None:
self.base.print_error("Network interface: ",
self.network_interface,
" do not have MAC address!")
exit(1)
self.your_ip_address = self.base.get_netiface_ip_address(
self.network_interface)
if self.your_ip_address is None:
self.base.print_error("Network interface: ",
self.network_interface,
" do not have IP address!")
exit(1)
if listen_ipv6:
self.your_ipv6_addresses = self.base.get_netiface_ipv6_link_address(
self.network_interface)
if len(self.your_ipv6_addresses) == 0:
self.base.print_error("Network interface: ",
self.network_interface,
" do not have IPv6 link local address!")
exit(1)
else:
self.fake_addresses[self.AAAA_DNS_QUERY] = [
self.your_ipv6_addresses
]
else:
self.fake_addresses[self.AAAA_DNS_QUERY] = None
# endregion
# region Bind raw socket
self.rawSocket.bind((self.network_interface, 0))
# endregion
# region Set fake addresses
if len(fake_ip_addresses) > 0:
self.fake_addresses[self.A_DNS_QUERY] = fake_ip_addresses
else:
if not disable_ipv4:
self.fake_addresses[self.A_DNS_QUERY] = [self.your_ip_address]
if len(fake_ipv6_addresses) > 0:
self.fake_addresses[self.AAAA_DNS_QUERY] = fake_ipv6_addresses
if disable_ipv4:
self.DNS_QUERY_TYPES = [self.AAAA_DNS_QUERY]
else:
self.DNS_QUERY_TYPES = [self.A_DNS_QUERY, self.AAAA_DNS_QUERY]
else:
if self.fake_answers:
if listen_ipv6:
self.fake_addresses[self.AAAA_DNS_QUERY] = [
self.your_ipv6_addresses
]
# endregion
# region Set fake domains and "no such names" lists
self.fake_domains = fake_domains
self.no_such_names = no_such_names
# endregion
# region Check target IPv4 address
if target_ip_address is not None:
if not self.base.ip_address_validation(target_ip_address):
self.base.print_error("Bad target IPv4 address: ",
target_ip_address)
exit(1)
else:
self.target_ip_address = target_ip_address
# endregion
# region Check target IPv6 address
if target_ipv6_address is not None:
if not self.base.ipv6_address_validation(target_ipv6_address):
self.base.print_error("Bad target IPv6 address: ",
target_ipv6_address)
exit(1)
else:
self.target_ipv6_address = target_ipv6_address
# endregion
# region Sniffing DNS requests
# region Set network filter
network_filters = {}
if target_mac_address is not None:
network_filters['Ethernet'] = {'source': target_mac_address}
else:
network_filters['Ethernet'] = {'not-source': self.your_mac_address}
if self.target_ip_address is not None:
network_filters['IP'] = {'source-ip': self.target_ip_address}
if self.target_ipv6_address is not None:
network_filters['IPv6'] = {'source-ip': self.target_ipv6_address}
network_filters['IP'] = {'not-source-ip': '127.0.0.1'}
network_filters['UDP'] = {'destination-port': self.port}
# endregion
# region Clear fake_answers list
if not self.fake_answers:
if len(fake_ipv6_addresses) == 0:
del self.fake_addresses[self.AAAA_DNS_QUERY]
if len(fake_ip_addresses) == 0:
del self.fake_addresses[self.A_DNS_QUERY]
# endregion
# region Start sniffer
if listen_ipv6:
if disable_ipv4:
self.sniff.start(protocols=['IPv6', 'UDP', 'DNS'],
prn=self._reply,
filters=network_filters)
else:
self.sniff.start(protocols=['IP', 'IPv6', 'UDP', 'DNS'],
prn=self._reply,
filters=network_filters)
else:
self.sniff.start(protocols=['IP', 'UDP', 'DNS'],
prn=self._reply,
filters=network_filters)
# if 'IPv6' in request.keys():
# Base.print_info("MDNS packet from: ",
# request['IPv6']['source-ip'] + " (" + request['Ethernet']['source'] + ")")
if 'DHCP' in request.keys():
Base.print_info("DHCP packet from: ", request['Ethernet']['source'])
if 'DHCPv6' in request.keys():
Base.print_info("DHCPv6 packet from: ",
request['IPv6']['source-ip'] + " (" + request['Ethernet']['source'] + ")")
print(dumps(request, indent=4))
# endregion
# region Main function
if __name__ == "__main__":
# region Print info message
Base.print_info("Available protocols: ", "Ethernet ARP IP IPv6 ICMPv6 UDP DNS MDNS DHCP DHCPv6")
Base.print_info("Start test sniffing ...")
# endregion
# region Start sniffer
sniff = Sniff_raw()
sniff.start(protocols=['ARP', 'IP', 'IPv6', 'ICMPv6', 'UDP', 'DNS', 'DHCP', 'DHCPv6'], prn=print_packet)
# endregion
# endregion
# region Start DHCP sender in other thread
tm = ThreadManager(2)
tm.add_task(send_dhcp_discover)
# endregion
# region Set network filter
network_filters = {}
network_filters['IP'] = {'destination-ip': your_ip_address}
network_filters['UDP'] = {'source-port': 67}
network_filters['UDP'] = {'destination-port': 67}
# endregion
# region Start sniffer
sniff = Sniff_raw()
sniff.start(protocols=['IP', 'UDP', 'DHCP'],
prn=send_dhcp_request,
filters=network_filters)
# endregion
except KeyboardInterrupt:
# region Start network
system('service network-manager start')
system('service networking start 2>/dev/null')
system('service network start 2>/dev/null')
# endregion
Base.print_info("Exit ...")
exit(3)
# endregion