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Island: Add TCP connections to nodes based on TCP scan event

This commit is contained in:
vakarisz 2022-10-05 14:46:47 +03:00
parent bbcdc1bef4
commit 6c913895c5
2 changed files with 96 additions and 14 deletions
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33
monkey/monkey_island/cc/agent_event_handlers/scan_event_handler.py
View File

@ -1,12 +1,13 @@
from copy import deepcopy
from ipaddress import IPv4Interface
from logging import getLogger
from typing import Union
from typing_extensions import TypeAlias
from common.agent_events import PingScanEvent, TCPScanEvent
from common.types import PortStatus
from monkey_island.cc.models import CommunicationType, Machine
from common.agent_events import AbstractAgentEvent, PingScanEvent, TCPScanEvent
from common.types import PortStatus, SocketAddress
from monkey_island.cc.models import CommunicationType, Machine, Node
from monkey_island.cc.repository import (
IAgentRepository,
IMachineRepository,
@ -56,11 +57,22 @@ class ScanEventHandler:
try:
target_machine = self._get_target_machine(event)
source_node = self._get_source_node(event)
self._update_nodes(target_machine, event)
self._update_tcp_connections(source_node, target_machine, event)
except (RetrievalError, StorageError, UnknownRecordError):
logger.exception("Unable to process tcp scan data")
def _get_source_node(self, event: AbstractAgentEvent) -> Node:
machine = self._get_source_machine(event)
try:
return [
node for node in self._node_repository.get_nodes() if node.machine_id == machine.id
][0]
except KeyError:
raise UnknownRecordError(f"Source node for event {event} does not exist")
def _get_target_machine(self, event: ScanEvent) -> Machine:
try:
target_machines = self._machine_repository.get_machines_by_ip(event.target)
@ -85,6 +97,21 @@ class ScanEventHandler:
src_machine.id, target_machine.id, CommunicationType.SCANNED
)
def _update_tcp_connections(self, src_node: Node, target_machine: Machine, event: TCPScanEvent):
node_connections = dict(deepcopy(src_node.tcp_connections))
try:
machine_connections = set(node_connections[target_machine.id])
except KeyError:
machine_connections = set()
open_ports = [port for port, status in event.ports.items() if status == PortStatus.OPEN]
for open_port in open_ports:
socket_address = SocketAddress(ip=event.target, port=open_port)
machine_connections.add(socket_address)
node_connections[target_machine.id] = tuple(machine_connections)
src_node.tcp_connections = node_connections
self._node_repository.upsert_node(src_node)
def _get_source_machine(self, event: ScanEvent) -> Machine:
agent = self._agent_repository.get_agent_by_id(event.source)
return self._machine_repository.get_machine_by_id(agent.machine_id)

77
monkey/tests/unit_tests/monkey_island/cc/agent_event_handlers/test_scan_event_handler.py
View File

@ -1,3 +1,4 @@
from copy import deepcopy
from ipaddress import IPv4Address, IPv4Interface
from itertools import count
from unittest.mock import MagicMock
@ -9,7 +10,7 @@ from common import OperatingSystem
from common.agent_events import PingScanEvent, TCPScanEvent
from common.types import PortStatus, SocketAddress
from monkey_island.cc.agent_event_handlers import ScanEventHandler
from monkey_island.cc.models import Agent, CommunicationType, Machine
from monkey_island.cc.models import Agent, CommunicationType, Machine, Node
from monkey_island.cc.repository import (
IAgentRepository,
IMachineRepository,
@ -29,43 +30,74 @@ SOURCE_MACHINE = Machine(
hardware_id=5,
network_interfaces=[IPv4Interface("10.10.10.99/24")],
)
TARGET_MACHINE_ID = 33
TARGET_MACHINE_IP = "10.10.10.1"
TARGET_MACHINE = Machine(
id=33,
id=TARGET_MACHINE_ID,
hardware_id=9,
network_interfaces=[IPv4Interface("10.10.10.1/24")],
network_interfaces=[IPv4Interface(f"{TARGET_MACHINE_IP}/24")],
)
SOURCE_NODE = Node(
machine_id=SOURCE_MACHINE.id,
connections=[],
tcp_connections={
44: (SocketAddress(ip="1.1.1.1", port=40), SocketAddress(ip="2.2.2.2", port=50))
},
)
SOURCE_NODE_2 = Node(
machine_id=SOURCE_MACHINE.id,
connections=[],
tcp_connections={
44: (SocketAddress(ip="1.1.1.1", port=40), SocketAddress(ip="2.2.2.2", port=50)),
TARGET_MACHINE_ID: (SocketAddress(ip=TARGET_MACHINE_IP, port=22),),
},
)
EXPECTED_NODE = Node(
machine_id=SOURCE_MACHINE.id,
connections=[],
tcp_connections={
44: (SocketAddress(ip="1.1.1.1", port=40), SocketAddress(ip="2.2.2.2", port=50)),
TARGET_MACHINE_ID: (
SocketAddress(ip=TARGET_MACHINE_IP, port=22),
SocketAddress(ip=TARGET_MACHINE_IP, port=80),
),
},
)
PING_SCAN_EVENT = PingScanEvent(
source=AGENT_ID,
target=IPv4Address("10.10.10.1"),
target=IPv4Address(TARGET_MACHINE_IP),
response_received=True,
os=OperatingSystem.LINUX,
)
PING_SCAN_EVENT_NO_RESPONSE = PingScanEvent(
source=AGENT_ID,
target=IPv4Address("10.10.10.1"),
target=IPv4Address(TARGET_MACHINE_IP),
response_received=False,
os=OperatingSystem.LINUX,
)
PING_SCAN_EVENT_NO_OS = PingScanEvent(
source=AGENT_ID,
target=IPv4Address("10.10.10.1"),
target=IPv4Address(TARGET_MACHINE_IP),
response_received=True,
os=None,
)
TCP_SCAN_EVENT = TCPScanEvent(
source=AGENT_ID,
target=IPv4Address("10.10.10.1"),
ports={22: PortStatus.OPEN, 8080: PortStatus.CLOSED},
target=IPv4Address(TARGET_MACHINE_IP),
ports={22: PortStatus.OPEN, 80: PortStatus.OPEN, 8080: PortStatus.CLOSED},
)
TCP_SCAN_EVENT_CLOSED = TCPScanEvent(
source=AGENT_ID,
target=IPv4Address("10.10.10.1"),
target=IPv4Address(TARGET_MACHINE_IP),
ports={145: PortStatus.CLOSED, 8080: PortStatus.CLOSED},
)
@ -91,6 +123,8 @@ def machine_repository() -> IMachineRepository:
@pytest.fixture
def node_repository() -> INodeRepository:
node_repository = MagicMock(spec=INodeRepository)
node_repository.get_nodes.return_value = [deepcopy(SOURCE_NODE)]
node_repository.upsert_node = MagicMock()
node_repository.upsert_communication = MagicMock()
return node_repository
@ -103,7 +137,7 @@ def scan_event_handler(agent_repository, machine_repository, node_repository):
MACHINES_BY_ID = {MACHINE_ID: SOURCE_MACHINE, TARGET_MACHINE.id: TARGET_MACHINE}
MACHINES_BY_IP = {
IPv4Address("10.10.10.99"): [SOURCE_MACHINE],
IPv4Address("10.10.10.1"): [TARGET_MACHINE],
IPv4Address(TARGET_MACHINE_IP): [TARGET_MACHINE],
}
@ -186,6 +220,27 @@ def test_tcp_scan_event_target_machine_not_exists(
machine_repository.upsert_machine.assert_called_with(expected_machine)
def test_handle_tcp_scan_event__tcp_connections(
scan_event_handler, machine_repository, node_repository
):
event = TCP_SCAN_EVENT
scan_event_handler._update_nodes = MagicMock()
scan_event_handler.handle_tcp_scan_event(event)
node_repository.upsert_node.assert_called_with(EXPECTED_NODE)
def test_handle_tcp_scan_event__tcp_connections_upsert(
scan_event_handler, machine_repository, node_repository
):
event = TCP_SCAN_EVENT
node_repository.get_nodes.return_value = [deepcopy(SOURCE_NODE_2)]
scan_event_handler._update_nodes = MagicMock()
scan_event_handler.handle_tcp_scan_event(event)
node_repository.upsert_node.assert_called_with(EXPECTED_NODE)
@pytest.mark.parametrize(
"event,handler",
[(PING_SCAN_EVENT, HANDLE_PING_SCAN_METHOD), (TCP_SCAN_EVENT, HANDLE_TCP_SCAN_METHOD)],