import logging
from random import randint, 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.utils import RawPcapReader
from scapy.layers.inet import IP, Ether, TCP, RandShort
class EternalBlueExploit(BaseAttack.BaseAttack):
def __init__(self, statistics, pcap_file_path):
"""
Creates a new instance of the EternalBlue Exploit.
:param statistics: A reference to the statistics class.
"""
# Initialize attack
super(EternalBlueExploit, self).__init__(statistics, "EternalBlue Exploit", "Injects an EternalBlue exploit'",
"Resource Exhaustion")
# Define allowed parameters and their type
self.supported_params = {
Param.MAC_SOURCE: ParameterTypes.TYPE_MAC_ADDRESS,
Param.IP_SOURCE: ParameterTypes.TYPE_IP_ADDRESS,
Param.PORT_SOURCE: ParameterTypes.TYPE_PORT,
Param.MAC_DESTINATION: ParameterTypes.TYPE_MAC_ADDRESS,
Param.IP_DESTINATION: ParameterTypes.TYPE_IP_ADDRESS,
Param.INJECT_AT_TIMESTAMP: ParameterTypes.TYPE_FLOAT,
Param.INJECT_AFTER_PACKET: ParameterTypes.TYPE_PACKET_POSITION,
Param.PACKETS_PER_SECOND: ParameterTypes.TYPE_FLOAT
}
# PARAMETERS: initialize with default utilsvalues
# (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.MAC_SOURCE, self.statistics.get_mac_address(most_used_ip_address))
self.add_param_value(Param.INJECT_AFTER_PACKET, randint(0, self.statistics.get_packet_count()))
self.add_param_value(Param.PORT_SOURCE, str(RandShort()))
self.add_param_value(Param.PACKETS_PER_SECOND, randint(1, 64))
# victim configuration
# TO-DO: confirm that ip.dst uses Win OS
random_ip_address = self.statistics.get_random_ip_address()
self.add_param_value(Param.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(Param.MAC_DESTINATION, destination_mac)
def generate_attack_pcap(self):
def update_timestamp(timestamp, pps, maxdelay):
"""
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.
"""
return timestamp + uniform(0.1 / pps, maxdelay)
# Timestamp
timestamp_next_pkt = self.get_param_value(Param.INJECT_AT_TIMESTAMP)
# TO-DO: find better pkt rate
pps = self.get_param_value(Param.PACKETS_PER_SECOND)
randomdelay = Lea.fromValFreqsDict({1 / pps: 70, 2 / pps: 30, 5 / pps: 15, 10 / pps: 3})
# Initialize parameters
packets = []
mac_source = self.get_param_value(Param.MAC_SOURCE)
ip_source = self.get_param_value(Param.IP_SOURCE)
port_source = self.get_param_value(Param.PORT_SOURCE)
mac_destination = self.get_param_value(Param.MAC_DESTINATION)
ip_destination = self.get_param_value(Param.IP_DESTINATION)
path_attack_pcap = None
# Scan (MS17) for EternalBlue
# Read Win7_eternalblue_scan_vulnerable pcap file
orig_ip_dst = None
exploit_raw_packets = RawPcapReader("Win7_eternalblue_scan.pcap")
for pkt_num, pkt in enumerate(exploit_raw_packets):
eth_frame = Ether(pkt[0])
ip_pkt = eth_frame.payload
tcp_pkt = ip_pkt.payload
smb_port = 445
if pkt_num == 0:
if tcp_pkt.getfieldval("dport") == smb_port:
orig_ip_dst = ip_pkt.getfieldval("dst")
# Request
if ip_pkt.getfieldval("dst") == orig_ip_dst:
# 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)
# TCP
tcp_pkt.setfieldval("sport",port_source)
# Reply
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)
# TCP
tcp_pkt.setfieldval("dport", port_source)
new_pkt = (eth_frame / ip_pkt / tcp_pkt)
# TO-DO: reply should have different timestamp delay
new_pkt.time = timestamp_next_pkt
packets.append(new_pkt)
maxdelay = randomdelay.random()
timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps, maxdelay)
# Inject EternalBlue exploit packets
# Read Win7_eternalblue_exploit pcap file
exploit_raw_packets = RawPcapReader("Win7_eternalblue_exploit.pcap")
for pkt_num, pkt in enumerate(exploit_raw_packets):
eth_frame = Ether(pkt[0])
ip_pkt = eth_frame.payload
tcp_pkt = ip_pkt.payload
smb_port = 445
if pkt_num == 0:
if tcp_pkt.getfieldval("dport") == smb_port:
orig_ip_dst = ip_pkt.getfieldval("dst")
# Request
if ip_pkt.getfieldval("dst") == orig_ip_dst:
# 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)
# TCP
#tcp_pkt.setfieldval("sport", port_source)
# Reply
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)
# TCP
#tcp_pkt.setfieldval("dport", port_source)
new_pkt = (eth_frame / ip_pkt / tcp_pkt)
# TO-DO: reply should have different timestamp delay
new_pkt.time = timestamp_next_pkt
packets.append(new_pkt)
maxdelay = randomdelay.random()
timestamp_next_pkt = update_timestamp(timestamp_next_pkt, pps, maxdelay)
# Store timestamp of first packet (for attack label)
self.attack_start_utime = packets[0].time
self.attack_end_utime = packets[-1].time
if len(packets) > 0:
packets = sorted(packets, key=lambda pkt: pkt.time)
path_attack_pcap = self.write_attack_pcap(packets, True, path_attack_pcap)
# return packets sorted by packet time_sec_start
# pkt_num+1: because pkt_num starts at 0
return pkt_num + 1, path_attack_pcap