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 from scapy.layers.smb import * from scapy.layers.netbios import * class SmbScanAttack(BaseAttack.BaseAttack): # SMB port smb_port = 445 def __init__(self): """ Creates a new instance of the SmbScanAttack. """ # Initialize attack super(SmbScanAttack, self).__init__("SmbScan Attack", "Injects an SMB 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.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.IP_SOURCE_RANDOMIZE: ParameterTypes.TYPE_BOOLEAN, Param.PACKETS_PER_SECOND: ParameterTypes.TYPE_FLOAT, Param.PORT_SOURCE_RANDOMIZE: ParameterTypes.TYPE_BOOLEAN, Param.IP_HOSTING: ParameterTypes.TYPE_IP_ADDRESS, Param.PROTOCOL_VERSION: ParameterTypes.TYPE_STRING } def init_params(self): """ Initialize the parameters of this attack using the user supplied command line parameters. Use the provided statistics to calculate default parameters and to process user supplied queries. :param statistics: Reference to a statistics object. """ # PARAMETERS: initialize with default values # (values are overwritten if user specifies them) most_used_ip_address = self.statistics.get_most_used_ip_address() if isinstance(most_used_ip_address, list): most_used_ip_address = most_used_ip_address[0] self.add_param_value(Param.IP_SOURCE, most_used_ip_address) self.add_param_value(Param.IP_SOURCE_RANDOMIZE, 'False') self.add_param_value(Param.MAC_SOURCE, self.statistics.get_mac_address(most_used_ip_address)) all_ips = self.statistics.get_ip_addresses() if not isinstance(all_ips, list): ip_destinations = [] ip_destinations.append(all_ips) else: ip_destinations = all_ips self.add_param_value(Param.IP_DESTINATION, ip_destinations) # MAYBE REMOVE/CHANGE THIS MAC STUFF # destination_mac = [] for ip in ip_destinations: destination_mac.append(self.statistics.get_mac_address(str(ip))) if isinstance(destination_mac, list) and len(destination_mac) == 0: destination_mac = self.generate_random_mac_address() self.add_param_value(Param.MAC_DESTINATION, destination_mac) # # self.add_param_value(Param.PORT_SOURCE, randint(1024, 65535)) self.add_param_value(Param.PORT_SOURCE_RANDOMIZE, 'False') self.add_param_value(Param.PACKETS_PER_SECOND, (self.statistics.get_pps_sent(most_used_ip_address) + self.statistics.get_pps_received(most_used_ip_address)) / 2) self.add_param_value(Param.INJECT_AFTER_PACKET, randint(0, self.statistics.get_packet_count())) rnd_ip_count = self.statistics.get_ip_address_count()/2 self.add_param_value(Param.IP_HOSTING, self.statistics.get_random_ip_address(rnd_ip_count)) # maybe change to version 1 as default self.add_param_value(Param.PROTOCOL_VERSION, "2.1") @property def generate_attack_pcap(self): def update_timestamp(timestamp, pps, delay=0): """ Calculates the next timestamp to be used based on the packet per second rate (pps) and the maximum delay. :return: Timestamp to be used for the next packet. """ if delay == 0: # Calculate request timestamp # To imitate the bursty behavior of traffic randomdelay = Lea.fromValFreqsDict({1 / pps: 70, 2 / pps: 20, 5 / pps: 7, 10 / pps: 3}) return timestamp + uniform(1/pps , randomdelay.random()) else: # Calculate reply timestamp randomdelay = Lea.fromValFreqsDict({2*delay: 70, 3*delay: 20, 5*delay: 7, 10*delay: 3}) return timestamp + uniform(1 / pps + delay, 1 / pps + randomdelay.random()) def getIntervalPPS(complement_interval_pps, timestamp): """ Gets the packet rate (pps) for a specific time interval. :param complement_interval_pps: an array of tuples (the last timestamp in the interval, the packet rate in the crresponding interval). :param timestamp: the timestamp at which the packet rate is required. :return: the corresponding packet rate (pps) . """ for row in complement_interval_pps: if timestamp<=row[0]: return row[1] return complement_interval_pps[-1][1] # in case the timstamp > capture max timestamp mac_source = self.get_param_value(Param.MAC_SOURCE) mac_dest = self.get_param_value(Param.MAC_DESTINATION) pps = self.get_param_value(Param.PACKETS_PER_SECOND) # Calculate complement packet rates of the background traffic for each interval complement_interval_pps = self.statistics.calculate_complement_packet_rates(pps) if self.get_param_value(Param.PORT_SOURCE_RANDOMIZE): sport = randint(1, 65535) else: sport = self.get_param_value(Param.PORT_SOURCE) # Timestamp timestamp_next_pkt = self.get_param_value(Param.INJECT_AT_TIMESTAMP) # store start time of attack self.attack_start_utime = timestamp_next_pkt timestamp_prv_reply, timestamp_confirm = 0,0 # Initialize parameters ip_source = self.get_param_value(Param.IP_SOURCE) ip_destinations = self.get_param_value(Param.IP_DESTINATION) ip_hosting = self.get_param_value(Param.IP_HOSTING) packets = [] # Check ip.src == ip.dst #self.ip_src_dst_equal_check(ip_source, ip_destination) # Set MSS (Maximum Segment Size) based on MSS distribution of IP address source_mss_dist = self.statistics.get_mss_distribution(ip_source) if len(source_mss_dist) > 0: source_mss_prob_dict = Lea.fromValFreqsDict(source_mss_dist) source_mss_value = source_mss_prob_dict.random() else: source_mss_value = self.statistics.process_db_query("most_used(mssValue)") # Set TTL based on TTL distribution of IP address source_ttl_dist = self.statistics.get_ttl_distribution(ip_source) if len(source_ttl_dist) > 0: source_ttl_prob_dict = Lea.fromValFreqsDict(source_ttl_dist) source_ttl_value = source_ttl_prob_dict.random() else: source_ttl_value = self.statistics.process_db_query("most_used(ttlValue)") # Set Window Size based on Window Size distribution of IP address source_win_dist = self.statistics.get_win_distribution(ip_source) if len(source_win_dist) > 0: source_win_prob_dict = Lea.fromValFreqsDict(source_win_dist) source_win_value = source_win_prob_dict.random() else: source_win_value = self.statistics.process_db_query("most_used(winSize)") # ACTUAL ATTACK GOES HERE #print(len(mac_dest)) #print(mac_destination) #print(len(ip_destinations)) #print(ip_destinations) #print(ip_source) ip_dests = [] if isinstance(ip_destinations, list): ip_dests = ip_destinations else: ip_dests.append(ip_destinations) #print(ip_dests) for ip in ip_dests: if ip != ip_source: # Get destination Mac Address #print(ip) mac_destination = self.statistics.get_mac_address(str(ip)) if len(mac_destination) == 0: if isinstance(mac_dest, str): mac_destination = mac_dest else: mac_destination = self.generate_random_mac_address() #print(len(mac_destination)) #print(mac_destination) #print(ip) # Set MSS (Maximum Segment Size) based on MSS distribution of IP address destination_mss_dist = self.statistics.get_mss_distribution(ip) if len(destination_mss_dist) > 0: destination_mss_prob_dict = Lea.fromValFreqsDict(destination_mss_dist) destination_mss_value = destination_mss_prob_dict.random() else: destination_mss_value = self.statistics.process_db_query("most_used(mssValue)") # Set TTL based on TTL distribution of IP address destination_ttl_dist = self.statistics.get_ttl_distribution(ip) if len(destination_ttl_dist) > 0: destination_ttl_prob_dict = Lea.fromValFreqsDict(destination_ttl_dist) destination_ttl_value = destination_ttl_prob_dict.random() else: destination_ttl_value = self.statistics.process_db_query("most_used(ttlValue)") # Set Window Size based on Window Size distribution of IP address destination_win_dist = self.statistics.get_win_distribution(ip) if len(destination_win_dist) > 0: destination_win_prob_dict = Lea.fromValFreqsDict(destination_win_dist) destination_win_value = destination_win_prob_dict.random() else: destination_win_value = self.statistics.process_db_query("most_used(winSize)") minDelay, maxDelay = self.get_reply_delay(ip) # New connection, new random TCP sequence numbers attacker_seq = randint(1000, 50000) victim_seq = randint(1000, 50000) # 1) Build request package request_ether = Ether(src=mac_source, dst=mac_destination) request_ip = IP(src=ip_source, dst=ip, ttl=source_ttl_value, flags='DF') request_tcp = TCP(sport=sport, dport=self.smb_port, window=source_win_value, flags='S', seq=attacker_seq, options=[('MSS', source_mss_value)]) attacker_seq += 1 request = (request_ether / request_ip / request_tcp) request.time = timestamp_next_pkt # Append request packets.append(request) # Update timestamp for next package timestamp_reply = update_timestamp(timestamp_next_pkt, pps, minDelay) while (timestamp_reply <= timestamp_prv_reply): timestamp_reply = update_timestamp(timestamp_prv_reply, pps, minDelay) timestamp_prv_reply = timestamp_reply if ip in ip_hosting: # 2) Build TCP packages for ip that hosts SMB # destination sends SYN, ACK reply_ether = Ether(src=mac_destination, dst=mac_source) reply_ip = IP(src=ip, dst=ip_source, ttl=destination_ttl_value, flags='DF') reply_tcp = TCP(sport=self.smb_port, dport=sport, seq=victim_seq, ack=attacker_seq, flags='SA', window=destination_win_value, options=[('MSS', destination_mss_value)]) victim_seq += 1 reply = (reply_ether / reply_ip / reply_tcp) reply.time = timestamp_reply packets.append(reply) # requester confirms, ACK confirm_ether = request_ether confirm_ip = request_ip confirm_tcp = TCP(sport=sport, dport=self.smb_port, seq=attacker_seq, ack=victim_seq, window=source_win_value, flags='A') confirm = (confirm_ether / confirm_ip / confirm_tcp) timestamp_confirm = update_timestamp(timestamp_reply, pps, minDelay) confirm.time = timestamp_confirm packets.append(confirm) # INSERT SMB-REQUEST PACKAGE HERE # CHECK FOR PROTOCOL VERSION? smb_MID = randint(1, 65535) smb_PID = randint(1, 65535) smb_req_tail = SMBNegociate_Protocol_Request_Tail() smb_req_head = SMBNegociate_Protocol_Request_Header(Flags2=0x2801, PID=smb_PID, MID=smb_MID) smb_req_length = len(smb_req_head) + len(smb_req_tail) smb_req_net_bio = NBTSession(TYPE=0x00, LENGTH=smb_req_length) smb_req_tcp = TCP(sport=sport, dport=self.smb_port, flags='PA', seq=attacker_seq, ack=victim_seq) smb_req_ip = IP(src=ip_source, dst=ip, ttl=source_ttl_value) smb_req_ether = Ether(src=mac_source, dst=mac_destination) attacker_seq += len(smb_req_net_bio) + len(smb_req_head) + len(smb_req_tail) smb_req_combined = ( smb_req_ether / smb_req_ip / smb_req_tcp / smb_req_net_bio / smb_req_head / smb_req_tail) timestamp_smb_req = update_timestamp(timestamp_confirm, pps, minDelay) smb_req_combined.time = timestamp_smb_req packets.append(smb_req_combined) # destination confirms SMB request package reply_tcp = TCP(sport=self.smb_port, dport=sport, seq=victim_seq, ack=attacker_seq, window=destination_win_value, flags='A') confirm_smb_req = (reply_ether / reply_ip / reply_tcp) timestamp_reply = update_timestamp(timestamp_smb_req, pps, minDelay) confirm_smb_req.time = timestamp_reply packets.append(confirm_smb_req) # INSERT SMB-RESPONSE PACKAGE HERE # CHECK FOR PROTOCOL VERSION? smb_rsp_paket = SMBNegociate_Protocol_Response_No_Security_No_Key() smb_rsp_length = len(smb_rsp_paket) smb_rsp_net_bio = NBTSession(TYPE=0x00, LENGTH=smb_rsp_length) smb_rsp_tcp = TCP(sport=self.smb_port, dport=sport, flags='PA', seq=victim_seq, ack=attacker_seq) smb_rsp_ip = IP(src=ip, dst=ip_source, ttl=destination_ttl_value) smb_rsp_ether = Ether(src=mac_destination, dst=mac_source) victim_seq += len(smb_rsp_net_bio) + len(smb_rsp_paket) smb_rsp_combined = (smb_rsp_ether / smb_rsp_ip / smb_rsp_tcp / smb_rsp_net_bio / smb_rsp_paket) timestamp_smb_rsp = update_timestamp(timestamp_reply, pps, minDelay) smb_rsp_combined.time = timestamp_smb_rsp packets.append(smb_rsp_combined) # source confirms SMB response package confirm_tcp = TCP(sport=sport, dport=self.smb_port, seq=attacker_seq, ack=victim_seq, window=source_win_value, flags='A') confirm_smb_res = (confirm_ether / confirm_ip / confirm_tcp) timestamp_confirm = update_timestamp(timestamp_smb_rsp, pps, minDelay) confirm_smb_res.time = timestamp_confirm packets.append(confirm_smb_res) # attacker sends FIN ACK confirm_tcp = TCP(sport=sport, dport=self.smb_port, seq=attacker_seq, ack=victim_seq, window=source_win_value, flags='FA') source_fin_ack = (confirm_ether / confirm_ip / confirm_tcp) timestamp_src_fin_ack = update_timestamp(timestamp_confirm, pps, minDelay) source_fin_ack.time = timestamp_src_fin_ack attacker_seq += 1 packets.append(source_fin_ack) # victim sends FIN ACK reply_tcp = TCP(sport=self.smb_port, dport=sport, seq=victim_seq, ack=attacker_seq, window=destination_win_value, flags='FA') destination_fin_ack = (reply_ether / reply_ip / reply_tcp) timestamp_dest_fin_ack = update_timestamp(timestamp_src_fin_ack, pps, minDelay) victim_seq += 1 destination_fin_ack.time = timestamp_dest_fin_ack packets.append(destination_fin_ack) # source sends final ACK confirm_tcp = TCP(sport=sport, dport=self.smb_port, seq=attacker_seq, ack=victim_seq, window=source_win_value, flags='A') final_ack = (confirm_ether / confirm_ip / confirm_tcp) timestamp_final_ack = update_timestamp(timestamp_dest_fin_ack, pps, minDelay) final_ack.time = timestamp_final_ack packets.append(final_ack) else: # Build RST package reply_ether = Ether(src=mac_destination, dst=mac_source) reply_ip = IP(src=ip, dst=ip_source, ttl=destination_ttl_value, flags='DF') reply_tcp = TCP(sport=self.smb_port, dport=sport, seq=0, ack=attacker_seq, flags='RA', window=destination_win_value, options=[('MSS', destination_mss_value)]) reply = (reply_ether / reply_ip / reply_tcp) reply.time = timestamp_reply packets.append(reply) pps = max(getIntervalPPS(complement_interval_pps, timestamp_next_pkt), 10) timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) # store end time of attack self.attack_end_utime = packets[-1].time # write attack packets to pcap pcap_path = self.write_attack_pcap(sorted(packets, key=lambda pkt: pkt.time)) # return packets sorted by packet time_sec_start return len(packets), pcap_path