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- import logging
- import random as rnd
- import lea
- import scapy.layers.inet as inet
- import scapy.utils
- import Attack.AttackParameters as atkParam
- import Attack.BaseAttack as BaseAttack
- import ID2TLib.SMBLib as SMBLib
- import ID2TLib.Utility as Util
- logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
- class MS17ScanAttack(BaseAttack.BaseAttack):
- template_scan_pcap_path = Util.RESOURCE_DIR + "Win7_eternalblue_scan.pcap"
-
- minDefaultPort = 30000
- maxDefaultPort = 50000
- last_conn_dst_port = 4444
- def __init__(self):
- """
- Creates a new instance of the EternalBlue Exploit.
- """
-
- super(MS17ScanAttack, self).__init__("MS17ScanAttack", "Injects a MS17 scan'",
- "Scanning/Probing")
- self.pkt_num = 0
- self.path_attack_pcap = None
-
- self.supported_params.update({
- atkParam.Parameter.MAC_SOURCE: atkParam.ParameterTypes.TYPE_MAC_ADDRESS,
- atkParam.Parameter.IP_SOURCE: atkParam.ParameterTypes.TYPE_IP_ADDRESS,
- atkParam.Parameter.PORT_SOURCE: atkParam.ParameterTypes.TYPE_PORT,
- atkParam.Parameter.MAC_DESTINATION: atkParam.ParameterTypes.TYPE_MAC_ADDRESS,
- atkParam.Parameter.IP_DESTINATION: atkParam.ParameterTypes.TYPE_IP_ADDRESS,
- atkParam.Parameter.PORT_DESTINATION: atkParam.ParameterTypes.TYPE_PORT,
- atkParam.Parameter.INJECT_AT_TIMESTAMP: atkParam.ParameterTypes.TYPE_FLOAT,
- atkParam.Parameter.INJECT_AFTER_PACKET: atkParam.ParameterTypes.TYPE_PACKET_POSITION,
- atkParam.Parameter.PACKETS_PER_SECOND: atkParam.ParameterTypes.TYPE_FLOAT
- })
- 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.
- """
-
-
-
- most_used_ip_address = self.statistics.get_most_used_ip_address()
- random_ip_address = self.statistics.get_random_ip_address()
- while random_ip_address == most_used_ip_address:
- random_ip_address = self.statistics.get_random_ip_address()
- self.add_param_value(atkParam.Parameter.IP_SOURCE, random_ip_address)
- self.add_param_value(atkParam.Parameter.MAC_SOURCE, self.statistics.get_mac_address(random_ip_address))
- self.add_param_value(atkParam.Parameter.PORT_SOURCE, rnd.randint(self.minDefaultPort, self.maxDefaultPort))
-
- self.add_param_value(atkParam.Parameter.IP_DESTINATION, most_used_ip_address)
- destination_mac = self.statistics.get_mac_address(most_used_ip_address)
- if isinstance(destination_mac, list) and len(destination_mac) == 0:
- destination_mac = self.generate_random_mac_address()
- self.add_param_value(atkParam.Parameter.MAC_DESTINATION, destination_mac)
- self.add_param_value(atkParam.Parameter.PORT_DESTINATION, SMBLib.smb_port)
-
- self.add_param_value(atkParam.Parameter.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(atkParam.Parameter.INJECT_AFTER_PACKET, rnd.randint(0, self.statistics.get_packet_count()))
- def generate_attack_packets(self):
- """
- Creates the attack packets.
- """
-
- timestamp_next_pkt = self.get_param_value(atkParam.Parameter.INJECT_AT_TIMESTAMP)
- pps = self.get_param_value(atkParam.Parameter.PACKETS_PER_SECOND)
-
- complement_interval_pps = self.statistics.calculate_complement_packet_rates(pps)
-
- self.packets = []
- mac_source = self.get_param_value(atkParam.Parameter.MAC_SOURCE)
- ip_source = self.get_param_value(atkParam.Parameter.IP_SOURCE)
- port_source = self.get_param_value(atkParam.Parameter.PORT_SOURCE)
- mac_destination = self.get_param_value(atkParam.Parameter.MAC_DESTINATION)
- ip_destination = self.get_param_value(atkParam.Parameter.IP_DESTINATION)
- port_destination = self.get_param_value(atkParam.Parameter.PORT_DESTINATION)
-
- self.ip_src_dst_equal_check(ip_source, ip_destination)
-
- source_ttl_dist = self.statistics.get_ttl_distribution(ip_source)
- if len(source_ttl_dist) > 0:
- source_ttl_prob_dict = lea.Lea.fromValFreqsDict(source_ttl_dist)
- source_ttl_value = source_ttl_prob_dict.random()
- else:
- source_ttl_value = Util.handle_most_used_outputs(self.statistics.get_most_used_ttl_value())
- destination_ttl_dist = self.statistics.get_ttl_distribution(ip_destination)
- if len(destination_ttl_dist) > 0:
- destination_ttl_prob_dict = lea.Lea.fromValFreqsDict(destination_ttl_dist)
- destination_ttl_value = destination_ttl_prob_dict.random()
- else:
- destination_ttl_value = Util.handle_most_used_outputs(
- self.statistics.get_most_used_ttl_value())
-
- source_win_dist = self.statistics.get_win_distribution(ip_source)
- if len(source_win_dist) > 0:
- source_win_prob_dict = lea.Lea.fromValFreqsDict(source_win_dist)
- else:
- source_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
- source_win_prob_dict = lea.Lea.fromValFreqsDict(source_win_dist)
- destination_win_dist = self.statistics.get_win_distribution(ip_destination)
- if len(destination_win_dist) > 0:
- destination_win_prob_dict = lea.Lea.fromValFreqsDict(destination_win_dist)
- else:
- destination_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
- destination_win_prob_dict = lea.Lea.fromValFreqsDict(destination_win_dist)
-
- mss_value = Util.handle_most_used_outputs(self.statistics.get_most_used_mss_value())
- if not mss_value:
- mss_value = 1465
-
-
- orig_ip_dst = None
- exploit_raw_packets = scapy.utils.RawPcapReader(self.template_scan_pcap_path)
- inter_arrival_times = self.get_inter_arrival_time(exploit_raw_packets)
- exploit_raw_packets.close()
- exploit_raw_packets = scapy.utils.RawPcapReader(self.template_scan_pcap_path)
- source_origin_wins, destination_origin_wins = {}, {}
- for self.pkt_num, pkt in enumerate(exploit_raw_packets):
- eth_frame = inet.Ether(pkt[0])
- ip_pkt = eth_frame.payload
- tcp_pkt = ip_pkt.payload
- if self.pkt_num == 0:
- if tcp_pkt.getfieldval("dport") == SMBLib.smb_port:
- orig_ip_dst = ip_pkt.getfieldval("dst")
-
- if ip_pkt.getfieldval("dst") == orig_ip_dst:
-
- eth_frame.setfieldval("src", mac_source)
- eth_frame.setfieldval("dst", mac_destination)
-
- ip_pkt.setfieldval("src", ip_source)
- ip_pkt.setfieldval("dst", ip_destination)
- ip_pkt.setfieldval("ttl", source_ttl_value)
-
- tcp_pkt.setfieldval("sport", port_source)
- tcp_pkt.setfieldval("dport", port_destination)
-
- source_origin_win = tcp_pkt.getfieldval("window")
- if source_origin_win not in source_origin_wins:
- source_origin_wins[source_origin_win] = source_win_prob_dict.random()
- new_win = source_origin_wins[source_origin_win]
- tcp_pkt.setfieldval("window", new_win)
-
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options[0] = ("MSS", mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- new_pkt.time = timestamp_next_pkt
- pps = max(Util.get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
- timestamp_next_pkt = Util.update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[
- self.pkt_num]
-
- else:
-
- eth_frame.setfieldval("src", mac_destination)
- eth_frame.setfieldval("dst", mac_source)
-
- ip_pkt.setfieldval("src", ip_destination)
- ip_pkt.setfieldval("dst", ip_source)
- ip_pkt.setfieldval("ttl", destination_ttl_value)
-
- tcp_pkt.setfieldval("dport", port_source)
- tcp_pkt.setfieldval("sport", port_destination)
-
- destination_origin_win = tcp_pkt.getfieldval("window")
- if destination_origin_win not in destination_origin_wins:
- destination_origin_wins[destination_origin_win] = destination_win_prob_dict.random()
- new_win = destination_origin_wins[destination_origin_win]
- tcp_pkt.setfieldval("window", new_win)
-
- tcp_options = tcp_pkt.getfieldval("options")
- if tcp_options:
- if tcp_options[0][0] == "MSS":
- tcp_options[0] = ("MSS", mss_value)
- tcp_pkt.setfieldval("options", tcp_options)
- new_pkt = (eth_frame / ip_pkt / tcp_pkt)
- timestamp_next_pkt = Util.update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[
- self.pkt_num]
- new_pkt.time = timestamp_next_pkt
- self.packets.append(new_pkt)
- exploit_raw_packets.close()
- def generate_attack_pcap(self):
- """
- Creates a pcap containing the attack packets.
- :return: The location of the generated pcap file.
- """
-
- self.attack_start_utime = self.packets[0].time
- self.attack_end_utime = self.packets[-1].time
- if len(self.packets) > 0:
- self.packets = sorted(self.packets, key=lambda pkt: pkt.time)
- self.path_attack_pcap = self.write_attack_pcap(self.packets, True, self.path_attack_pcap)
-
-
- return self.pkt_num + 1, self.path_attack_pcap
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