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.Utility as Util logging.getLogger("scapy.runtime").setLevel(logging.ERROR) # noinspection PyPep8 class SQLiAttack(BaseAttack.BaseAttack): template_attack_pcap_path = Util.RESOURCE_DIR + "ATutorSQLi.pcap" # HTTP port http_port = 80 # Metasploit experiments show this range of ports minDefaultPort = 30000 maxDefaultPort = 50000 def __init__(self): """ Creates a new instance of the SQLi Attack. """ # Initialize attack super(SQLiAttack, self).__init__("SQLi Attack", "Injects a SQLi attack'", "Privilege elevation") self.pkt_num = 0 self.path_attack_pcap = None # Define allowed parameters and their type self.supported_params.update({ atkParam.Parameter.MAC_SOURCE: atkParam.ParameterTypes.TYPE_MAC_ADDRESS, atkParam.Parameter.IP_SOURCE: atkParam.ParameterTypes.TYPE_IP_ADDRESS, 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.TARGET_HOST: atkParam.ParameterTypes.TYPE_DOMAIN, # atkParam.Parameter.TARGET_URI: atkParam.ParameterTypes.TYPE_URI, atkParam.Parameter.INJECT_AT_TIMESTAMP: atkParam.ParameterTypes.TYPE_FLOAT, atkParam.Parameter.INJECT_AFTER_PACKET: atkParam.ParameterTypes.TYPE_PACKET_POSITION, atkParam.Parameter.PACKET_LIMIT_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. """ # PARAMETERS: initialize with default utilsvalues # (values are overwritten if user specifies them) # Attacker configuration most_used_ip_address = self.statistics.get_most_used_ip_address() self.add_param_value(atkParam.Parameter.IP_SOURCE, most_used_ip_address) self.add_param_value(atkParam.Parameter.MAC_SOURCE, self.statistics.get_mac_address(most_used_ip_address)) # Victim configuration random_ip_address = self.statistics.get_random_ip_address() self.add_param_value(atkParam.Parameter.IP_DESTINATION, random_ip_address) destination_mac = self.statistics.get_mac_address(random_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, self.http_port) # self.add_param_value(atkParam.Parameter.TARGET_URI, "/") self.add_param_value(atkParam.Parameter.TARGET_HOST, "www.hackme.com") # Attack configuration self.add_param_value(atkParam.Parameter.INJECT_AFTER_PACKET, rnd.randint(0, self.statistics.get_packet_count())) self.add_param_value(atkParam.Parameter.PACKET_LIMIT_PER_SECOND, (self.statistics.get_pps_sent(most_used_ip_address) + self.statistics.get_pps_received(most_used_ip_address)) / 2) def generate_attack_packets(self): """ Creates the attack packets. """ # Timestamp timestamp_next_pkt = self.get_param_value(atkParam.Parameter.INJECT_AT_TIMESTAMP) pps = self.get_param_value(atkParam.Parameter.PACKET_LIMIT_PER_SECOND) # Calculate complement packet rates of BG traffic per interval complement_interval_pps = self.statistics.calculate_complement_packet_rates(pps) # Initialize parameters self.packets = [] mac_source = self.get_param_value(atkParam.Parameter.MAC_SOURCE) ip_source = self.get_param_value(atkParam.Parameter.IP_SOURCE) if isinstance(ip_source, list): ip_source = ip_source[0] mac_destination = self.get_param_value(atkParam.Parameter.MAC_DESTINATION) ip_destination = self.get_param_value(atkParam.Parameter.IP_DESTINATION) if isinstance(ip_destination, list): ip_destination = ip_destination[0] port_destination = self.get_param_value(atkParam.Parameter.PORT_DESTINATION) target_host = self.get_param_value(atkParam.Parameter.TARGET_HOST) target_uri = "/" # self.get_param_value(atkParam.Parameter.TARGET_URI) # Check ip.src == ip.dst self.ip_src_dst_equal_check(ip_source, ip_destination) # 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.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()) # Inject SQLi Attack # Read SQLi Attack pcap file orig_ip_dst = None exploit_raw_packets = scapy.utils.RawPcapReader(self.template_attack_pcap_path) inter_arrival_times, inter_arrival_time_dist = self.get_inter_arrival_time(exploit_raw_packets, True) time_steps = lea.Lea.fromValFreqsDict(inter_arrival_time_dist) exploit_raw_packets.close() exploit_raw_packets = scapy.utils.RawPcapReader(self.template_attack_pcap_path) port_source = rnd.randint(self.minDefaultPort, self.maxDefaultPort) # experiments show this range of ports # Random TCP sequence numbers global attacker_seq attacker_seq = rnd.randint(1000, 50000) global victim_seq victim_seq = rnd.randint(1000, 50000) 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 str_tcp_seg = str(tcp_pkt.payload) # Clean payloads eth_frame.payload = b'' ip_pkt.payload = b'' tcp_pkt.payload = b'' # FIXME: no getfieldval in class bytes if self.pkt_num == 0: prev_orig_port_source = tcp_pkt.getfieldval("sport") orig_ip_dst = ip_pkt.getfieldval("dst") # victim IP # Last connection if tcp_pkt.getfieldval("dport") != 80 and tcp_pkt.getfieldval("sport") != 80: # New connection, new random TCP sequence numbers attacker_seq = rnd.randint(1000, 50000) victim_seq = rnd.randint(1000, 50000) # First packet in a connection has ACK = 0 tcp_pkt.setfieldval("ack", 0) # Attacker --> vicitm if ip_pkt.getfieldval("dst") == orig_ip_dst: # victim IP # There are 363 TCP connections with different source ports, for each of them we generate random port if tcp_pkt.getfieldval("sport") != prev_orig_port_source and tcp_pkt.getfieldval("dport") != 4444 \ and (tcp_pkt.getfieldval("dport") == 80 or tcp_pkt.getfieldval("sport") == 80): port_source = rnd.randint(self.minDefaultPort, self.maxDefaultPort) prev_orig_port_source = tcp_pkt.getfieldval("sport") # New connection, new random TCP sequence numbers attacker_seq = rnd.randint(1000, 50000) victim_seq = rnd.randint(1000, 50000) # First packet in a connection has ACK = 0 tcp_pkt.setfieldval("ack", 0) # Ether eth_frame.setfieldval("src", mac_source) eth_frame.setfieldval("dst", mac_destination) # IP ip_pkt.setfieldval("src", ip_source) ip_pkt.setfieldval("dst", ip_destination) ip_pkt.setfieldval("ttl", source_ttl_value) # TCP # Regular connection if tcp_pkt.getfieldval("dport") == 80 or tcp_pkt.getfieldval("sport") == 80: tcp_pkt.setfieldval("sport", port_source) tcp_pkt.setfieldval("dport", port_destination) str_tcp_seg = self.modify_http_header(str_tcp_seg, '/ATutor', target_uri, orig_ip_dst, target_host) # TCP Seq, Ack if tcp_pkt.getfieldval("ack") != 0: tcp_pkt.setfieldval("ack", victim_seq) tcp_pkt.setfieldval("seq", attacker_seq) if not (tcp_pkt.getfieldval("flags") == 16 and len(str_tcp_seg) == 0): # flags=A: attacker_seq += max(len(str_tcp_seg), 1) new_pkt = (eth_frame / ip_pkt / tcp_pkt / str_tcp_seg) 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) + float(time_steps.random()) # Victim --> attacker else: # Ether eth_frame.setfieldval("src", mac_destination) eth_frame.setfieldval("dst", mac_source) # IP ip_pkt.setfieldval("src", ip_destination) ip_pkt.setfieldval("dst", ip_source) ip_pkt.setfieldval("ttl", destination_ttl_value) # TCP # Regular connection if tcp_pkt.getfieldval("dport") == 80 or tcp_pkt.getfieldval("sport") == 80: tcp_pkt.setfieldval("dport", port_source) tcp_pkt.setfieldval("sport", port_destination) str_tcp_seg = self.modify_http_header(str_tcp_seg, '/ATutor', target_uri, orig_ip_dst, target_host) # TCP Seq, ACK tcp_pkt.setfieldval("ack", attacker_seq) tcp_pkt.setfieldval("seq", victim_seq) strLen = len(str_tcp_seg) if not (tcp_pkt.getfieldval("flags") == 16 and strLen == 0): # flags=A: victim_seq += max(strLen, 1) new_pkt = (eth_frame / ip_pkt / tcp_pkt / str_tcp_seg) timestamp_next_pkt = Util.update_timestamp(timestamp_next_pkt, pps) + float(time_steps.random()) 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. """ # Store timestamp of first packet (for attack label) 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.packets sorted by packet time_sec_start # pkt_num+1: because pkt_num starts at 0 return self.pkt_num + 1, self.path_attack_pcap