EternalBlueExploit.py 20 KB

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  1. import logging
  2. from random import randint, uniform
  3. from lea import Lea
  4. from scapy.utils import RawPcapReader
  5. from scapy.layers.inet import Ether
  6. from definitions import ROOT_DIR
  7. from Attack import BaseAttack
  8. from Attack.AttackParameters import Parameter as Param
  9. from Attack.AttackParameters import ParameterTypes
  10. from ID2TLib.Utility import update_timestamp, get_interval_pps
  11. from ID2TLib.SMBLib import smb_port
  12. logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
  13. # noinspection PyPep8
  14. class EternalBlueExploit(BaseAttack.BaseAttack):
  15. template_scan_pcap_path = ROOT_DIR + "/../resources/Win7_eternalblue_scan.pcap"
  16. template_attack_pcap_path = ROOT_DIR + "/../resources/Win7_eternalblue_exploit.pcap"
  17. # Empirical values from Metasploit experiments
  18. minDefaultPort = 30000
  19. maxDefaultPort = 50000
  20. last_conn_dst_port = 4444
  21. def __init__(self):
  22. """
  23. Creates a new instance of the EternalBlue Exploit.
  24. """
  25. # Initialize attack
  26. super(EternalBlueExploit, self).__init__("EternalBlue Exploit", "Injects an EternalBlue exploit'",
  27. "Privilege elevation")
  28. # Define allowed parameters and their type
  29. self.supported_params = {
  30. Param.MAC_SOURCE: ParameterTypes.TYPE_MAC_ADDRESS,
  31. Param.IP_SOURCE: ParameterTypes.TYPE_IP_ADDRESS,
  32. Param.PORT_SOURCE: ParameterTypes.TYPE_PORT,
  33. Param.MAC_DESTINATION: ParameterTypes.TYPE_MAC_ADDRESS,
  34. Param.IP_DESTINATION: ParameterTypes.TYPE_IP_ADDRESS,
  35. Param.PORT_DESTINATION: ParameterTypes.TYPE_PORT,
  36. Param.INJECT_AT_TIMESTAMP: ParameterTypes.TYPE_FLOAT,
  37. Param.INJECT_AFTER_PACKET: ParameterTypes.TYPE_PACKET_POSITION,
  38. Param.PACKETS_PER_SECOND: ParameterTypes.TYPE_FLOAT
  39. }
  40. def init_params(self):
  41. """
  42. Initialize the parameters of this attack using the user supplied command line parameters.
  43. Use the provided statistics to calculate default parameters and to process user
  44. supplied queries.
  45. :param statistics: Reference to a statistics object.
  46. """
  47. # PARAMETERS: initialize with default utilsvalues
  48. # (values are overwritten if user specifies them)
  49. # Attacker configuration
  50. most_used_ip_address = self.statistics.get_most_used_ip_address()
  51. if isinstance(most_used_ip_address, list):
  52. most_used_ip_address = most_used_ip_address[0]
  53. random_ip_address = self.statistics.get_random_ip_address()
  54. self.add_param_value(Param.IP_SOURCE, random_ip_address)
  55. self.add_param_value(Param.MAC_SOURCE, self.statistics.get_mac_address(random_ip_address))
  56. self.add_param_value(Param.PORT_SOURCE, randint(self.minDefaultPort, self.maxDefaultPort))
  57. # Victim configuration
  58. self.add_param_value(Param.IP_DESTINATION, most_used_ip_address)
  59. destination_mac = self.statistics.get_mac_address(most_used_ip_address)
  60. if isinstance(destination_mac, list) and len(destination_mac) == 0:
  61. destination_mac = self.generate_random_mac_address()
  62. self.add_param_value(Param.MAC_DESTINATION, destination_mac)
  63. self.add_param_value(Param.PORT_DESTINATION, smb_port)
  64. # Attack configuration
  65. self.add_param_value(Param.PACKETS_PER_SECOND,
  66. (self.statistics.get_pps_sent(most_used_ip_address) +
  67. self.statistics.get_pps_received(most_used_ip_address)) / 2)
  68. self.add_param_value(Param.INJECT_AFTER_PACKET, randint(0, self.statistics.get_packet_count()))
  69. def generate_attack_pcap(self):
  70. # Timestamp
  71. timestamp_next_pkt = self.get_param_value(Param.INJECT_AT_TIMESTAMP)
  72. pps = self.get_param_value(Param.PACKETS_PER_SECOND)
  73. # calculate complement packet rates of BG traffic per interval
  74. complement_interval_pps = self.statistics.calculate_complement_packet_rates(pps)
  75. # Initialize parameters
  76. packets = []
  77. mac_source = self.get_param_value(Param.MAC_SOURCE)
  78. ip_source = self.get_param_value(Param.IP_SOURCE)
  79. port_source = self.get_param_value(Param.PORT_SOURCE)
  80. mac_destination = self.get_param_value(Param.MAC_DESTINATION)
  81. ip_destination = self.get_param_value(Param.IP_DESTINATION)
  82. port_destination = self.get_param_value(Param.PORT_DESTINATION)
  83. # Check ip.src == ip.dst
  84. self.ip_src_dst_equal_check(ip_source, ip_destination)
  85. path_attack_pcap = None
  86. # Set TTL based on TTL distribution of IP address
  87. source_ttl_dist = self.statistics.get_ttl_distribution(ip_source)
  88. if len(source_ttl_dist) > 0:
  89. source_ttl_prob_dict = Lea.fromValFreqsDict(source_ttl_dist)
  90. source_ttl_value = source_ttl_prob_dict.random()
  91. else:
  92. source_ttl_value = self.statistics.process_db_query("most_used(ttlValue)")
  93. destination_ttl_dist = self.statistics.get_ttl_distribution(ip_destination)
  94. if len(destination_ttl_dist) > 0:
  95. destination_ttl_prob_dict = Lea.fromValFreqsDict(destination_ttl_dist)
  96. destination_ttl_value = destination_ttl_prob_dict.random()
  97. else:
  98. destination_ttl_value = self.statistics.process_db_query("most_used(ttlValue)")
  99. # Set Window Size based on Window Size distribution of IP address
  100. source_win_dist = self.statistics.get_win_distribution(ip_source)
  101. if len(source_win_dist) > 0:
  102. source_win_prob_dict = Lea.fromValFreqsDict(source_win_dist)
  103. else:
  104. source_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
  105. source_win_prob_dict = Lea.fromValFreqsDict(source_win_dist)
  106. destination_win_dist = self.statistics.get_win_distribution(ip_destination)
  107. if len(destination_win_dist) > 0:
  108. destination_win_prob_dict = Lea.fromValFreqsDict(destination_win_dist)
  109. else:
  110. destination_win_dist = self.statistics.get_win_distribution(self.statistics.get_most_used_ip_address())
  111. destination_win_prob_dict = Lea.fromValFreqsDict(destination_win_dist)
  112. # Set MSS (Maximum Segment Size) based on MSS distribution of IP address
  113. mss_value = self.statistics.process_db_query("most_used(mssValue)")
  114. if not mss_value:
  115. mss_value = 1465
  116. # Scan (MS17) for EternalBlue
  117. # Read Win7_eternalblue_scan pcap file
  118. orig_ip_dst = None
  119. exploit_raw_packets = RawPcapReader(self.template_scan_pcap_path)
  120. inter_arrival_times = self.get_inter_arrival_time(exploit_raw_packets)
  121. exploit_raw_packets = RawPcapReader(self.template_scan_pcap_path)
  122. source_origin_wins, destination_origin_wins = {}, {}
  123. for pkt_num, pkt in enumerate(exploit_raw_packets):
  124. eth_frame = Ether(pkt[0])
  125. ip_pkt = eth_frame.payload
  126. tcp_pkt = ip_pkt.payload
  127. if pkt_num == 0:
  128. if tcp_pkt.getfieldval("dport") == smb_port:
  129. orig_ip_dst = ip_pkt.getfieldval("dst") # victim IP
  130. # Request
  131. if ip_pkt.getfieldval("dst") == orig_ip_dst: # victim IP
  132. # Ether
  133. eth_frame.setfieldval("src", mac_source)
  134. eth_frame.setfieldval("dst", mac_destination)
  135. # IP
  136. ip_pkt.setfieldval("src", ip_source)
  137. ip_pkt.setfieldval("dst", ip_destination)
  138. ip_pkt.setfieldval("ttl", source_ttl_value)
  139. # TCP
  140. tcp_pkt.setfieldval("sport",port_source)
  141. tcp_pkt.setfieldval("dport",port_destination)
  142. ## Window Size (mapping)
  143. source_origin_win = tcp_pkt.getfieldval("window")
  144. if source_origin_win not in source_origin_wins:
  145. source_origin_wins[source_origin_win] = source_win_prob_dict.random()
  146. new_win = source_origin_wins[source_origin_win]
  147. tcp_pkt.setfieldval("window", new_win)
  148. ## MSS
  149. tcp_options = tcp_pkt.getfieldval("options")
  150. if tcp_options:
  151. if tcp_options[0][0] == "MSS":
  152. tcp_options [0] = ("MSS",mss_value)
  153. tcp_pkt.setfieldval("options", tcp_options)
  154. new_pkt = (eth_frame / ip_pkt / tcp_pkt)
  155. new_pkt.time = timestamp_next_pkt
  156. pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
  157. timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[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 = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]#+ float(timeSteps.random())
  184. new_pkt.time = timestamp_next_pkt
  185. packets.append(new_pkt)
  186. # Inject EternalBlue exploit packets
  187. # Read Win7_eternalblue_exploit pcap file
  188. exploit_raw_packets = RawPcapReader(self.template_attack_pcap_path)
  189. port_source = randint(self.minDefaultPort,self.maxDefaultPort) # experiments show this range of ports
  190. # conversations = {(ip.src, ip.dst, port.src, port.dst): packets}
  191. conversations, orderList_conversations = self.packetsToConvs(exploit_raw_packets)
  192. conv_start_timesamp = timestamp_next_pkt
  193. for conv_index, conv in enumerate(orderList_conversations):
  194. conv_start_timesamp = conv_start_timesamp + uniform(0.001,0.01) # the distance between the starts of the converstaions
  195. timestamp_next_pkt = conv_start_timesamp
  196. conv_pkts = conversations[conv]
  197. inter_arrival_times = self.get_inter_arrival_time(conv_pkts)
  198. if conv_index == len(orderList_conversations) - 2: # Not the last conversation
  199. timestamp_next_pkt = packets[-1].time + uniform(0.001,0.01)
  200. if conv_index != len(orderList_conversations)-1: # Not the last conversation
  201. port_source += 2
  202. for pkt_num, pkt in enumerate(conv_pkts):
  203. eth_frame = Ether(pkt[0])
  204. ip_pkt = eth_frame.payload
  205. tcp_pkt = ip_pkt.payload
  206. if pkt_num == 0:
  207. if tcp_pkt.getfieldval("dport") == smb_port:
  208. orig_ip_dst = ip_pkt.getfieldval("dst")
  209. # Request
  210. if ip_pkt.getfieldval("dst") == orig_ip_dst: # victim IP
  211. # Ether
  212. eth_frame.setfieldval("src", mac_source)
  213. eth_frame.setfieldval("dst", mac_destination)
  214. # IP
  215. ip_pkt.setfieldval("src", ip_source)
  216. ip_pkt.setfieldval("dst", ip_destination)
  217. ip_pkt.setfieldval("ttl", source_ttl_value)
  218. # TCP
  219. tcp_pkt.setfieldval("sport", port_source)
  220. tcp_pkt.setfieldval("dport", port_destination)
  221. ## Window Size
  222. source_origin_win = tcp_pkt.getfieldval("window")
  223. if source_origin_win not in source_origin_wins:
  224. source_origin_wins[source_origin_win] = source_win_prob_dict.random()
  225. new_win = source_origin_wins[source_origin_win]
  226. tcp_pkt.setfieldval("window", new_win)
  227. ## MSS
  228. tcp_options = tcp_pkt.getfieldval("options")
  229. if tcp_options:
  230. if tcp_options[0][0] == "MSS":
  231. tcp_options[0] = ("MSS", mss_value)
  232. tcp_pkt.setfieldval("options", tcp_options)
  233. new_pkt = (eth_frame / ip_pkt / tcp_pkt)
  234. new_pkt.time = timestamp_next_pkt
  235. pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
  236. timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num] #float(timeSteps.random())
  237. # Reply
  238. else:
  239. # Ether
  240. eth_frame.setfieldval("src", mac_destination)
  241. eth_frame.setfieldval("dst", mac_source)
  242. # IP
  243. ip_pkt.setfieldval("src", ip_destination)
  244. ip_pkt.setfieldval("dst", ip_source)
  245. ip_pkt.setfieldval("ttl", destination_ttl_value)
  246. # TCP
  247. tcp_pkt.setfieldval("dport", port_source)
  248. tcp_pkt.setfieldval("sport", port_destination)
  249. ## Window Size
  250. destination_origin_win = tcp_pkt.getfieldval("window")
  251. if destination_origin_win not in destination_origin_wins:
  252. destination_origin_wins[destination_origin_win] = destination_win_prob_dict.random()
  253. new_win = destination_origin_wins[destination_origin_win]
  254. tcp_pkt.setfieldval("window", new_win)
  255. ## MSS
  256. tcp_options = tcp_pkt.getfieldval("options")
  257. if tcp_options:
  258. if tcp_options[0][0] == "MSS":
  259. tcp_options[0] = ("MSS", mss_value)
  260. tcp_pkt.setfieldval("options", tcp_options)
  261. new_pkt = (eth_frame / ip_pkt / tcp_pkt)
  262. pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
  263. timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]#float(timeSteps.random())
  264. new_pkt.time = timestamp_next_pkt
  265. packets.append(new_pkt)
  266. else: # Last conversation where the victim start a connection with the attacker
  267. timestamp_next_pkt = packets[-1].time + uniform(0.001, 0.01)
  268. port_source = randint(self.minDefaultPort,self.maxDefaultPort)
  269. for pkt_num, pkt in enumerate(conv_pkts):
  270. eth_frame = Ether(pkt[0])
  271. ip_pkt = eth_frame.payload
  272. tcp_pkt = ip_pkt.payload
  273. # Request
  274. if tcp_pkt.getfieldval("dport") == self.last_conn_dst_port:
  275. # Ether
  276. eth_frame.setfieldval("src", mac_destination)
  277. eth_frame.setfieldval("dst", mac_source)
  278. # IP
  279. ip_pkt.setfieldval("src", ip_destination)
  280. ip_pkt.setfieldval("dst", ip_source)
  281. ip_pkt.setfieldval("ttl", destination_ttl_value)
  282. # TCP
  283. tcp_pkt.setfieldval("sport", port_source)
  284. # destination port is fixed 4444
  285. ## Window Size
  286. destination_origin_win = tcp_pkt.getfieldval("window")
  287. if destination_origin_win not in destination_origin_wins:
  288. destination_origin_wins[destination_origin_win] = destination_win_prob_dict.random()
  289. new_win = destination_origin_wins[destination_origin_win]
  290. tcp_pkt.setfieldval("window", new_win)
  291. ## MSS
  292. tcp_options = tcp_pkt.getfieldval("options")
  293. if tcp_options:
  294. if tcp_options[0][0] == "MSS":
  295. tcp_options[0] = ("MSS", mss_value)
  296. tcp_pkt.setfieldval("options", tcp_options)
  297. new_pkt = (eth_frame / ip_pkt / tcp_pkt)
  298. new_pkt.time = timestamp_next_pkt
  299. pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
  300. timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]# float(timeSteps.random())
  301. # Reply
  302. else:
  303. # Ether
  304. eth_frame.setfieldval("src", mac_source)
  305. eth_frame.setfieldval("dst", mac_destination)
  306. # IP
  307. ip_pkt.setfieldval("src", ip_source)
  308. ip_pkt.setfieldval("dst", ip_destination)
  309. ip_pkt.setfieldval("ttl", source_ttl_value)
  310. # TCP
  311. tcp_pkt.setfieldval("dport", port_source)
  312. # source port is fixed 4444
  313. ## Window Size
  314. source_origin_win = tcp_pkt.getfieldval("window")
  315. if source_origin_win not in source_origin_wins:
  316. source_origin_wins[source_origin_win] = source_win_prob_dict.random()
  317. new_win = source_origin_wins[source_origin_win]
  318. tcp_pkt.setfieldval("window", new_win)
  319. ## MSS
  320. tcp_options = tcp_pkt.getfieldval("options")
  321. if tcp_options:
  322. if tcp_options[0][0] == "MSS":
  323. tcp_options[0] = ("MSS", mss_value)
  324. tcp_pkt.setfieldval("options", tcp_options)
  325. new_pkt = (eth_frame / ip_pkt / tcp_pkt)
  326. pps = max(get_interval_pps(complement_interval_pps, timestamp_next_pkt), 10)
  327. timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps) + inter_arrival_times[pkt_num]# float(timeSteps.random())
  328. new_pkt.time = timestamp_next_pkt
  329. packets.append(new_pkt)
  330. # Store timestamp of first packet (for attack label)
  331. self.attack_start_utime = packets[0].time
  332. self.attack_end_utime = packets[-1].time
  333. if len(packets) > 0:
  334. packets = sorted(packets, key=lambda pkt: pkt.time)
  335. path_attack_pcap = self.write_attack_pcap(packets, True, path_attack_pcap)
  336. # return packets sorted by packet time_sec_start
  337. # pkt_num+1: because pkt_num starts at 0
  338. return pkt_num + 1, path_attack_pcap