forked from p15670423/monkey
Move tcp scanner to use new check_tcp_pors
This commit is contained in:
Daniel Goldberg
parent
0bc6668242
commit
b9809f1e1f
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@ -1,9 +1,7 @@
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import time
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from random import shuffle
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from model.host import VictimHost
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from network import HostScanner, HostFinger
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from network.tools import check_tcp_port
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from network.tools import check_tcp_ports
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__author__ = 'itamar'
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@ -18,29 +16,25 @@ class TcpScanner(HostScanner, HostFinger):
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return self.get_host_fingerprint(host, True)
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def get_host_fingerprint(self, host, only_one_port=False):
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assert isinstance(host, VictimHost)
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"""
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Scans a target host to see if it's alive using the tcp_target_ports specified in the configuration.
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:param host: VictimHost structure
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:param only_one_port: Currently unused.
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:return: T/F if there is at least one open port. In addition, the host object is updated to mark those services as alive.
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"""
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count = 0
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# maybe hide under really bad detection systems
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target_ports = self._config.tcp_target_ports[:]
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shuffle(target_ports)
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for target_port in target_ports:
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is_open, banner = check_tcp_port(host.ip_addr,
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target_port,
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self._config.tcp_scan_timeout / 1000.0,
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self._config.tcp_scan_get_banner)
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if is_open:
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count += 1
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ports, banners = check_tcp_ports(host.ip_addr, target_ports, self._config.tcp_scan_timeout / 1000.0)
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if len(ports) != 0:
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for target_port, banner in zip(ports, banners):
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service = 'tcp-' + str(target_port)
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host.services[service] = {}
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if banner:
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host.services[service]['banner'] = banner
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if only_one_port:
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break
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else:
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time.sleep(self._config.tcp_scan_interval / 1000.0)
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return count != 0
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return len(ports) != 0
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@ -2,6 +2,7 @@ import logging
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import select
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import socket
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import struct
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import time
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DEFAULT_TIMEOUT = 10
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BANNER_READ = 1024
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@ -36,6 +37,14 @@ def struct_unpack_tracker_string(data, index):
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def check_tcp_port(ip, port, timeout=DEFAULT_TIMEOUT, get_banner=False):
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"""
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Checks if a given TCP port is open
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:param ip: Target IP
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:param port: Target Port
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:param timeout: Timeout for socket connection
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:param get_banner: if true, pulls first BANNER_READ bytes from the socket.
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:return: Tuple, T/F + banner if requested.
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"""
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.settimeout(timeout)
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@ -54,7 +63,7 @@ def check_tcp_port(ip, port, timeout=DEFAULT_TIMEOUT, get_banner=False):
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read_ready, _, _ = select.select([sock], [], [], timeout)
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if len(read_ready) > 0:
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banner = sock.recv(BANNER_READ)
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except:
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except socket.error:
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pass
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sock.close()
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@ -62,6 +71,13 @@ def check_tcp_port(ip, port, timeout=DEFAULT_TIMEOUT, get_banner=False):
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def check_udp_port(ip, port, timeout=DEFAULT_TIMEOUT):
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"""
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Checks if a given UDP port is open by checking if it replies to an empty message
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:param ip: Target IP
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:param port: Target port
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:param timeout: Timeout to wait
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:return: Tuple, T/F + banner
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"""
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.settimeout(timeout)
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@ -77,3 +93,103 @@ def check_udp_port(ip, port, timeout=DEFAULT_TIMEOUT):
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sock.close()
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return is_open, data
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def check_tcp_ports(ip, ports, timeout=DEFAULT_TIMEOUT, get_banner=False):
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"""
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Checks whether any of the given ports are open on a target IP.
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:param ip: IP of host to attack
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:param ports: List of ports to attack. Must not be empty.
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:param timeout: Amount of time to wait for connection
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:param get_banner: T/F if to get first packets from server
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:return: list of open ports. If get_banner=True, then a matching list of banners.
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"""
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sockets = [socket.socket(socket.AF_INET, socket.SOCK_STREAM) for _ in range(len(ports))]
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[s.setblocking(0) for s in sockets]
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good_ports = []
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try:
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for sock, port in zip(sockets, ports):
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LOG.debug("Connecting to port %d" % port)
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err = sock.connect_ex((ip, port))
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if err == 0:
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good_ports.append((port, sock))
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if err == 10035: # WSAEWOULDBLOCK is valid, see https://msdn.microsoft.com/en-us/library/windows/desktop/ms740668%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396
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good_ports.append((port, sock))
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if len(good_ports) != 0:
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time.sleep(timeout)
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read_sockets, write_sockets, errored_sockets = \
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select.select(
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[s[1] for s in good_ports],
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[s[1] for s in good_ports],
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[s[1] for s in good_ports],
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0) # no timeout because we've already slept
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connected_ports_sockets = [x for x in good_ports if x[1] in write_sockets]
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LOG.debug(
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"On host %s discovered the following ports %s" %
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(str(ip), ",".join([str(x) for x in connected_ports_sockets])))
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banners = []
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if get_banner:
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# read first X bytes
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banners = [sock.recv(BANNER_READ) if sock in read_sockets else ""
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for port, sock in connected_ports_sockets]
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pass
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# try to cleanup
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[s[1].close() for s in good_ports]
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return [port for port, sock in connected_ports_sockets], banners
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else:
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return [], []
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except socket.error as exc:
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LOG.warning("Exception when checking ports on host %s, Exception: %s", str(ip), exc)
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return [], []
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def check_tcp_ports(ip, ports, timeout=DEFAULT_TIMEOUT, get_banner=False):
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"""
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Checks whether any of the given ports are open on a target IP.
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:param ip: IP of host to attack
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:param ports: List of ports to attack. Must not be empty.
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:param timeout: Amount of time to wait for connection
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:param get_banner: T/F if to get first packets from server
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:return: list of open ports. If get_banner=True, then a matching list of banners.
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"""
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sockets = [socket.socket(socket.AF_INET, socket.SOCK_STREAM) for _ in range(len(ports))]
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[s.setblocking(0) for s in sockets]
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good_ports = []
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try:
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for sock, port in zip(sockets, ports):
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LOG.debug("Connecting to port %d" % port)
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err = sock.connect_ex((ip, port))
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if err == 0:
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good_ports.append((port, sock))
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if err == 10035: # WSAEWOULDBLOCK is valid, see https://msdn.microsoft.com/en-us/library/windows/desktop/ms740668%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396
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good_ports.append((port, sock))
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if len(good_ports) != 0:
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time.sleep(timeout)
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read_sockets, write_sockets, errored_sockets = \
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select.select(
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[s[1] for s in good_ports],
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[s[1] for s in good_ports],
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[s[1] for s in good_ports],
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0) # no timeout because we've already slept
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connected_ports_sockets = [x for x in good_ports if x[1] in write_sockets]
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LOG.debug(
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"On host %s discovered the following ports %s" %
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(str(ip), ",".join([str(x) for x in connected_ports_sockets])))
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banners = []
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if get_banner:
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# read first X bytes
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banners = [sock.recv(BANNER_READ) if sock in read_sockets else ""
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for port, sock in connected_ports_sockets]
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pass
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# try to cleanup
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[s[1].close() for s in good_ports]
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return [port for port, sock in connected_ports_sockets], banners
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else:
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return [], []
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except socket.error as exc:
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LOG.warning("Exception when checking ports on host %s, Exception: %s", str(ip), exc)
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return [], []
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