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MS17ScanAttack.py 11 KB

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  1. import logging
  2. import random as rnd
  3. import lea
  4. import scapy.layers.inet as inet
  5. import scapy.utils
  6. import Attack.AttackParameters as atkParam
  7. import Attack.BaseAttack as BaseAttack
  8. import ID2TLib.SMBLib as SMBLib
  9. import ID2TLib.Utility as Util
  10. logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
  11. # noinspection PyPep8
  12. class MS17ScanAttack(BaseAttack.BaseAttack):
  13. template_scan_pcap_path = Util.RESOURCE_DIR + "Win7_eternalblue_scan.pcap"
  14. # Empirical values from Metasploit experiments
  15. minDefaultPort = 30000
  16. maxDefaultPort = 50000
  17. last_conn_dst_port = 4444
  18. def __init__(self):
  19. """
  20. Creates a new instance of the EternalBlue Exploit.
  21. """
  22. # Initialize attack
  23. super(MS17ScanAttack, self).__init__("MS17ScanAttack", "Injects a MS17 scan'",
  24. "Scanning/Probing")
  25. self.pkt_num = 0
  26. self.path_attack_pcap = None
  27. # Define allowed parameters and their type
  28. self.supported_params.update({
  29. atkParam.Parameter.MAC_SOURCE: atkParam.ParameterTypes.TYPE_MAC_ADDRESS,
  30. atkParam.Parameter.IP_SOURCE: atkParam.ParameterTypes.TYPE_IP_ADDRESS,
  31. atkParam.Parameter.PORT_SOURCE: atkParam.ParameterTypes.TYPE_PORT,
  32. atkParam.Parameter.MAC_DESTINATION: atkParam.ParameterTypes.TYPE_MAC_ADDRESS,
  33. atkParam.Parameter.IP_DESTINATION: atkParam.ParameterTypes.TYPE_IP_ADDRESS,
  34. atkParam.Parameter.PORT_DESTINATION: atkParam.ParameterTypes.TYPE_PORT,
  35. atkParam.Parameter.INJECT_AT_TIMESTAMP: atkParam.ParameterTypes.TYPE_FLOAT,
  36. atkParam.Parameter.INJECT_AFTER_PACKET: atkParam.ParameterTypes.TYPE_PACKET_POSITION,
  37. atkParam.Parameter.PACKETS_PER_SECOND: atkParam.ParameterTypes.TYPE_FLOAT
  38. })
  39. def init_params(self):
  40. """
  41. Initialize the parameters of this attack using the user supplied command line parameters.
  42. Use the provided statistics to calculate default parameters and to process user
  43. supplied queries.
  44. """
  45. # PARAMETERS: initialize with default utilsvalues
  46. # (values are overwritten if user specifies them)
  47. # Attacker configuration
  48. most_used_ip_address = self.statistics.get_most_used_ip_address()
  49. random_ip_address = self.statistics.get_random_ip_address()
  50. while random_ip_address == most_used_ip_address:
  51. random_ip_address = self.statistics.get_random_ip_address()
  52. self.add_param_value(atkParam.Parameter.IP_SOURCE, random_ip_address)
  53. self.add_param_value(atkParam.Parameter.MAC_SOURCE, self.statistics.get_mac_address(random_ip_address))
  54. self.add_param_value(atkParam.Parameter.PORT_SOURCE, rnd.randint(self.minDefaultPort, self.maxDefaultPort))
  55. # Victim configuration
  56. self.add_param_value(atkParam.Parameter.IP_DESTINATION, most_used_ip_address)
  57. destination_mac = self.statistics.get_mac_address(most_used_ip_address)
  58. if isinstance(destination_mac, list) and len(destination_mac) == 0:
  59. destination_mac = self.generate_random_mac_address()
  60. self.add_param_value(atkParam.Parameter.MAC_DESTINATION, destination_mac)
  61. self.add_param_value(atkParam.Parameter.PORT_DESTINATION, SMBLib.smb_port)
  62. # Attack configuration
  63. self.add_param_value(atkParam.Parameter.PACKETS_PER_SECOND,
  64. (self.statistics.get_pps_sent(most_used_ip_address) +
  65. self.statistics.get_pps_received(most_used_ip_address)) / 2)
  66. self.add_param_value(atkParam.Parameter.INJECT_AFTER_PACKET, rnd.randint(0, self.statistics.get_packet_count()))
  67. def generate_attack_packets(self):
  68. # Timestamp
  69. timestamp_next_pkt = self.get_param_value(atkParam.Parameter.INJECT_AT_TIMESTAMP)
  70. pps = self.get_param_value(atkParam.Parameter.PACKETS_PER_SECOND)
  71. # calculate complement packet rates of BG traffic per interval
  72. complement_interval_pps = self.statistics.calculate_complement_packet_rates(pps)
  73. # Initialize parameters
  74. self.packets = []
  75. mac_source = self.get_param_value(atkParam.Parameter.MAC_SOURCE)
  76. ip_source = self.get_param_value(atkParam.Parameter.IP_SOURCE)
  77. port_source = self.get_param_value(atkParam.Parameter.PORT_SOURCE)
  78. mac_destination = self.get_param_value(atkParam.Parameter.MAC_DESTINATION)
  79. ip_destination = self.get_param_value(atkParam.Parameter.IP_DESTINATION)
  80. port_destination = self.get_param_value(atkParam.Parameter.PORT_DESTINATION)
  81. # Check ip.src == ip.dst
  82. self.ip_src_dst_equal_check(ip_source, ip_destination)
  83. # Set TTL based on TTL distribution of IP address
  84. source_ttl_dist = self.statistics.get_ttl_distribution(ip_source)
  85. if len(source_ttl_dist) > 0:
  86. source_ttl_prob_dict = lea.Lea.fromValFreqsDict(source_ttl_dist)
  87. source_ttl_value = source_ttl_prob_dict.random()
  88. else:
  89. source_ttl_value = Util.handle_most_used_outputs(self.statistics.process_db_query("most_used(ttlValue)"))
  90. destination_ttl_dist = self.statistics.get_ttl_distribution(ip_destination)
  91. if len(destination_ttl_dist) > 0:
  92. destination_ttl_prob_dict = lea.Lea.fromValFreqsDict(destination_ttl_dist)
  93. destination_ttl_value = destination_ttl_prob_dict.random()
  94. else:
  95. destination_ttl_value = Util.handle_most_used_outputs(
  96. self.statistics.process_db_query("most_used(ttlValue)"))
  97. # Set Window Size based on Window Size distribution of IP address
  98. source_win_dist = self.statistics.get_win_distribution(ip_source)
  99. if len(source_win_dist) > 0:
  100. source_win_prob_dict = lea.Lea.fromValFreqsDict(source_win_dist)
  101. else:
  102. source_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
  103. source_win_prob_dict = lea.Lea.fromValFreqsDict(source_win_dist)
  104. destination_win_dist = self.statistics.get_win_distribution(ip_destination)
  105. if len(destination_win_dist) > 0:
  106. destination_win_prob_dict = lea.Lea.fromValFreqsDict(destination_win_dist)
  107. else:
  108. destination_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
  109. destination_win_prob_dict = lea.Lea.fromValFreqsDict(destination_win_dist)
  110. # Set MSS (Maximum Segment Size) based on MSS distribution of IP address
  111. mss_value = Util.handle_most_used_outputs(self.statistics.process_db_query("most_used(mssValue)"))
  112. if not mss_value:
  113. mss_value = 1465
  114. # Scan (MS17)
  115. # Read Win7_eternalblue_scan pcap file
  116. orig_ip_dst = None
  117. exploit_raw_packets = scapy.utils.RawPcapReader(self.template_scan_pcap_path)
  118. inter_arrival_times = self.get_inter_arrival_time(exploit_raw_packets)
  119. exploit_raw_packets.close()
  120. exploit_raw_packets = scapy.utils.RawPcapReader(self.template_scan_pcap_path)
  121. source_origin_wins, destination_origin_wins = {}, {}
  122. for self.pkt_num, pkt in enumerate(exploit_raw_packets):
  123. eth_frame = inet.Ether(pkt[0])
  124. ip_pkt = eth_frame.payload
  125. tcp_pkt = ip_pkt.payload
  126. if self.pkt_num == 0:
  127. if tcp_pkt.getfieldval("dport") == SMBLib.smb_port:
  128. orig_ip_dst = ip_pkt.getfieldval("dst") # victim IP
  129. # Request
  130. if ip_pkt.getfieldval("dst") == orig_ip_dst: # victim IP
  131. # Ether
  132. eth_frame.setfieldval("src", mac_source)
  133. eth_frame.setfieldval("dst", mac_destination)
  134. # IP
  135. ip_pkt.setfieldval("src", ip_source)
  136. ip_pkt.setfieldval("dst", ip_destination)
  137. ip_pkt.setfieldval("ttl", source_ttl_value)
  138. # TCP
  139. tcp_pkt.setfieldval("sport", port_source)
  140. tcp_pkt.setfieldval("dport", port_destination)
  141. # Window Size (mapping)
  142. source_origin_win = tcp_pkt.getfieldval("window")
  143. if source_origin_win not in source_origin_wins:
  144. source_origin_wins[source_origin_win] = source_win_prob_dict.random()
  145. new_win = source_origin_wins[source_origin_win]
  146. tcp_pkt.setfieldval("window", new_win)
  147. # MSS
  148. tcp_options = tcp_pkt.getfieldval("options")
  149. if tcp_options:
  150. if tcp_options[0][0] == "MSS":
  151. tcp_options[0] = ("MSS", mss_value)
  152. tcp_pkt.setfieldval("options", tcp_options)
  153. new_pkt = (eth_frame / ip_pkt / tcp_pkt)
  154. new_pkt.time = timestamp_next_pkt
  155. pps = max(Util.get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
  156. timestamp_next_pkt = Util.update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[
  157. self.pkt_num] # float(timeSteps.random())
  158. # Reply
  159. else:
  160. # Ether
  161. eth_frame.setfieldval("src", mac_destination)
  162. eth_frame.setfieldval("dst", mac_source)
  163. # IP
  164. ip_pkt.setfieldval("src", ip_destination)
  165. ip_pkt.setfieldval("dst", ip_source)
  166. ip_pkt.setfieldval("ttl", destination_ttl_value)
  167. # TCP
  168. tcp_pkt.setfieldval("dport", port_source)
  169. tcp_pkt.setfieldval("sport", port_destination)
  170. # Window Size
  171. destination_origin_win = tcp_pkt.getfieldval("window")
  172. if destination_origin_win not in destination_origin_wins:
  173. destination_origin_wins[destination_origin_win] = destination_win_prob_dict.random()
  174. new_win = destination_origin_wins[destination_origin_win]
  175. tcp_pkt.setfieldval("window", new_win)
  176. # MSS
  177. tcp_options = tcp_pkt.getfieldval("options")
  178. if tcp_options:
  179. if tcp_options[0][0] == "MSS":
  180. tcp_options[0] = ("MSS", mss_value)
  181. tcp_pkt.setfieldval("options", tcp_options)
  182. new_pkt = (eth_frame / ip_pkt / tcp_pkt)
  183. timestamp_next_pkt = Util.update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[
  184. self.pkt_num] # + float(timeSteps.random())
  185. new_pkt.time = timestamp_next_pkt
  186. self.packets.append(new_pkt)
  187. exploit_raw_packets.close()
  188. def generate_attack_pcap(self):
  189. # Store timestamp of first packet (for attack label)
  190. self.attack_start_utime = self.packets[0].time
  191. self.attack_end_utime = self.packets[-1].time
  192. if len(self.packets) > 0:
  193. self.packets = sorted(self.packets, key=lambda pkt: pkt.time)
  194. self.path_attack_pcap = self.write_attack_pcap(self.packets, True, self.path_attack_pcap)
  195. # return packets sorted by packet time_sec_start
  196. # pkt_num+1: because pkt_num starts at 0
  197. return self.pkt_num + 1, self.path_attack_pcap