import logging from random import shuffle, randint, choice, uniform from lea import Lea from Attack import BaseAttack from Attack.AttackParameters import Parameter as Param from Attack.AttackParameters import ParameterTypes logging.getLogger("scapy.runtime").setLevel(logging.ERROR) # noinspection PyPep8 from scapy.layers.inet import IP, Ether, TCP class PortscanAttack(BaseAttack.BaseAttack): def __init__(self, statistics, pcap_file_path): """ Creates a new instance of the PortscanAttack. :param statistics: A reference to the statistics class. """ # Initialize attack super(PortscanAttack, self).__init__(statistics, "Portscan Attack", "Injects a nmap 'regular scan'", "Scanning/Probing") # Define allowed parameters and their type self.supported_params = { Param.IP_SOURCE: ParameterTypes.TYPE_IP_ADDRESS, Param.IP_DESTINATION: ParameterTypes.TYPE_IP_ADDRESS, Param.PORT_SOURCE: ParameterTypes.TYPE_PORT, Param.PORT_DESTINATION: ParameterTypes.TYPE_PORT, Param.PORT_OPEN: ParameterTypes.TYPE_PORT, Param.MAC_SOURCE: ParameterTypes.TYPE_MAC_ADDRESS, Param.MAC_DESTINATION: ParameterTypes.TYPE_MAC_ADDRESS, Param.INJECT_AT_TIMESTAMP: ParameterTypes.TYPE_FLOAT, Param.INJECT_AFTER_PACKET: ParameterTypes.TYPE_PACKET_POSITION, Param.PORT_DEST_SHUFFLE: ParameterTypes.TYPE_BOOLEAN, Param.PORT_ORDER_DESC: ParameterTypes.TYPE_BOOLEAN, Param.IP_SOURCE_RANDOMIZE: ParameterTypes.TYPE_BOOLEAN, Param.PACKETS_PER_SECOND: ParameterTypes.TYPE_FLOAT, Param.PORT_SOURCE_RANDOM: ParameterTypes.TYPE_BOOLEAN} # PARAMETERS: initialize with default values # (values are overwritten if user specifies them) most_used_ipAddress = self.statistics.process_db_query("most_used(ipAddress)") self.add_param_value(Param.IP_SOURCE, most_used_ipAddress) self.add_param_value(Param.IP_SOURCE_RANDOMIZE, 'False') self.add_param_value(Param.IP_DESTINATION, '192.168.178.13') self.add_param_value(Param.PORT_DESTINATION, '1-1023,1720,1900,8080') self.add_param_value(Param.PORT_SOURCE, '8542') self.add_param_value(Param.PORT_OPEN, '8080,9232,9233') self.add_param_value(Param.PORT_SOURCE_RANDOM, 'False') self.add_param_value(Param.PORT_DEST_SHUFFLE, 'False') self.add_param_value(Param.PORT_ORDER_DESC, 'False') self.add_param_value(Param.MAC_SOURCE, 'macAddress(ipAddress=' + most_used_ipAddress + ')') self.add_param_value(Param.MAC_DESTINATION, 'A0:1A:28:0B:62:F4') self.add_param_value(Param.PACKETS_PER_SECOND, (self.statistics.get_pps_sent(most_used_ipAddress) + self.statistics.get_pps_received(most_used_ipAddress)) / 2) self.add_param_value(Param.INJECT_AT_TIMESTAMP, '1410733342') # Sun, 14 Sep 2014 22:22:22 GMT def get_packets(self): def get_timestamp(): """ Calculates the next timestamp and returns the timestamp to be used for the current packet. :return: Timestamp to be used for the current packet. """ nonlocal timestamp_next_pkt, pps, maxdelay timestamp_current_packet = timestamp_next_pkt # current timestamp timestamp_next_pkt = timestamp_next_pkt + uniform(0.1 / pps, maxdelay) # timestamp for next pkt return timestamp_current_packet # Determine ports dest_ports = self.get_param_value(Param.PORT_DESTINATION) if self.get_param_value(Param.PORT_ORDER_DESC): dest_ports.reverse() elif self.get_param_value(Param.PORT_DEST_SHUFFLE): shuffle(dest_ports) if self.get_param_value(Param.PORT_SOURCE_RANDOM): sport = randint(0, 65535) else: sport = self.get_param_value(Param.PORT_SOURCE) # Get TTL distribution # keys = list(self.statistics.get_ttl_distribution().vals() # values = list(self.statistics.get_ttl_distribution().pmf()) # TTL_samples = numpy.random.choice(keys, size=len(dest_ports), replace=True, dport=values) ttl_value = self.statistics.process_db_query("most_used(ttlValue)") # MSS (Maximum Segment Size) for Ethernet. Allowed values [536,1500] mss = ('MSS', int(self.statistics.process_db_query('avg(mss)'))) # Timestamp timestamp_next_pkt = self.get_param_value(Param.INJECT_AT_TIMESTAMP) self.attack_start_utime = timestamp_next_pkt # store start time of attack pps = self.get_param_value(Param.PACKETS_PER_SECOND) randomdelay = Lea.fromValFreqsDict({1 / pps: 70, 2 / pps: 30, 5 / pps: 15, 10 / pps: 3}) maxdelay = randomdelay.random() # Initialize parameters packets = [] ip_source = self.get_param_value(Param.IP_SOURCE) ip_destination = self.get_param_value(Param.IP_DESTINATION) mac_source = self.get_param_value(Param.MAC_SOURCE) mac_destination = self.get_param_value(Param.MAC_DESTINATION) for dport in dest_ports: # Parameters changing each iteration if self.get_param_value(Param.IP_SOURCE_RANDOMIZE) and isinstance(ip_source, list): ip_source = choice(ip_source) # 1) Build request package request_ether = Ether(src=mac_source, dst=mac_destination) request_ip = IP(src=ip_source, dst=ip_destination, ttl=ttl_value) request_tcp = TCP(sport=sport, dport=dport) request = (request_ether / request_ip / request_tcp) request.time = get_timestamp() packets.append(request) # 2) Build reply package reply_ether = Ether(src=mac_destination, dst=mac_source) reply_ip = IP(src=ip_destination, dst=ip_source, flags='DF') if dport in self.get_param_value(Param.PORT_OPEN): # destination port is OPEN # target answers reply_tcp = TCP(sport=dport, dport=sport, seq=0, ack=1, flags='SA', window=29200, options=[mss]) # reply_tcp.time = time_sec_start + random.uniform(0.00005, 0.00013) reply = (reply_ether / reply_ip / reply_tcp) reply.time = get_timestamp() packets.append(reply) # requester confirms confirm_ether = request_ether confirm_ip = request_ip confirm_tcp = TCP(sport=sport, dport=dport, seq=1, window=0, flags='R') reply = (confirm_ether / confirm_ip / confirm_tcp) reply.time = get_timestamp() packets.append(reply) else: # destination port is NOT OPEN reply_tcp = TCP(sport=dport, dport=sport, flags='RA', seq=1, ack=1, window=0) # reply_tcp.time = time_sec_start + random.uniform(0.00005, 0.00013) reply = (reply_ether / reply_ip / reply_tcp) reply.time = get_timestamp() packets.append(reply) # store end time of attack self.attack_end_utime = reply.time # return packets sorted by packet time_sec_start return sorted(packets, key=lambda pkt: pkt.time)