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Responder/tools/RunFinger.py
lgandx 24e7b7c667 Added support for SMB2 signing
2020-12-31 09:39:15 -03:00

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#!/usr/bin/env python
# This file is part of Responder, a network take-over set of tools
# created and maintained by Laurent Gaffie.
# email: laurent.gaffie@gmail.com
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import re,sys,struct
import datetime
import multiprocessing
from socket import *
from odict import OrderedDict
import errno
import optparse
from RunFingerPackets import *
__version__ = "1.2"
parser = optparse.OptionParser(usage='python %prog -i 10.10.10.224\nor:\npython %prog -i 10.10.10.0/24', version=__version__, prog=sys.argv[0])
parser.add_option('-i','--ip', action="store", help="Target IP address or class C", dest="TARGET", metavar="10.10.10.224", default=None)
#Way better to have grepable output by default...
#parser.add_option('-g','--grep', action="store_true", dest="grep_output", default=False, help="Output in grepable format")
options, args = parser.parse_args()
if options.TARGET is None:
print("\n-i Mandatory option is missing, please provide a target or target range.\n")
parser.print_help()
exit(-1)
Timeout = 2
Host = options.TARGET
SMB1 = "Enabled"
SMB2signing = "False"
class Packet():
fields = OrderedDict([
])
def __init__(self, **kw):
self.fields = OrderedDict(self.__class__.fields)
for k,v in list(kw.items()):
if callable(v):
self.fields[k] = v(self.fields[k])
else:
self.fields[k] = v
def __str__(self):
return "".join(map(str, list(self.fields.values())))
#Python version
if (sys.version_info > (3, 0)):
PY2OR3 = "PY3"
else:
PY2OR3 = "PY2"
def StructWithLenPython2or3(endian,data):
#Python2...
if PY2OR3 == "PY2":
return struct.pack(endian, data)
#Python3...
else:
return struct.pack(endian, data).decode('latin-1')
def NetworkSendBufferPython2or3(data):
if PY2OR3 == "PY2":
return str(data)
else:
return bytes(str(data), 'latin-1')
def NetworkRecvBufferPython2or3(data):
if PY2OR3 == "PY2":
return str(data)
else:
return str(data.decode('latin-1'))
def longueur(payload):
length = StructWithLenPython2or3(">i", len(''.join(payload)))
return length
def ParseNegotiateSMB2Ans(data):
if data[4:8] == b"\xfeSMB":
return True
else:
return False
def SMB2SigningMandatory(data):
global SMB2signing
if data[70] == "\x03":
SMB2signing = "True"
else:
SMB2signing = "False"
def WorkstationFingerPrint(data):
return {
b"\x04\x00" :"Windows 95",
b"\x04\x0A" :"Windows 98",
b"\x04\x5A" :"Windows ME",
b"\x05\x00" :"Windows 2000",
b"\x05\x01" :"Windows XP",
b"\x05\x02" :"Windows XP(64-Bit)/Windows 2003",
b"\x06\x00" :"Windows Vista/Server 2008",
b"\x06\x01" :"Windows 7/Server 2008R2",
b"\x06\x02" :"Windows 8/Server 2012",
b"\x06\x03" :"Windows 8.1/Server 2012R2",
b"\x0A\x00" :"Windows 10/Server 2016/2019 (check build)",
}.get(data, 'Other than Microsoft')
def GetOsBuildNumber(data):
ProductBuild = struct.unpack("<h",data)[0]
return ProductBuild
def ParseSMBNTLM2Exchange(data, host, bootime, signing): #Parse SMB NTLMSSP Response
data = data.encode('latin-1')
SSPIStart = data.find(b'NTLMSSP')
SSPIString = data[SSPIStart:]
TargetNameLen = struct.unpack('<H',data[SSPIStart+12:SSPIStart+14])[0]
TargetNameOffset = struct.unpack('<L',data[SSPIStart+16:SSPIStart+20])[0]
Domain = SSPIString[TargetNameOffset:TargetNameOffset+TargetNameLen].decode('UTF-16LE')
AvPairsLen = struct.unpack('<H',data[SSPIStart+40:SSPIStart+42])[0]
AvPairsOffset = struct.unpack('<L',data[SSPIStart+44:SSPIStart+48])[0]
#AvPairs = SSPIString[AvPairsOffset:AvPairsOffset+AvPairsLen].decode('UTF-16LE')
WindowsVers = WorkstationFingerPrint(data[SSPIStart+48:SSPIStart+50])
WindowsBuildVers = GetOsBuildNumber(data[SSPIStart+50:SSPIStart+52])
DomainGrab((host, 445))
print(("[SMB2]:['{}', Os:'{}', Build:'{}', Domain:'{}', Bootime: '{}', Signing:'{}', RDP:'{}', SMB1:'{}']".format(host, WindowsVers, str(WindowsBuildVers), Domain, Bootime, signing, IsRDPOn((host,3389)),SMB1)))
def GetBootTime(data):
data = data.encode('latin-1')
Filetime = int(struct.unpack('<q',data)[0])
if Filetime == 0: # server may not disclose this info
return 0, "Unknown"
t = divmod(Filetime - 116444736000000000, 10000000)
time = datetime.datetime.fromtimestamp(t[0])
return time, time.strftime('%Y-%m-%d %H:%M:%S')
def IsDCVuln(t, host):
if t[0] == 0:
return ("Unknown")
Date = datetime.datetime(2014, 11, 17, 0, 30)
if t[0] < Date:
return("This system may be vulnerable to MS14-068")
Date = datetime.datetime(2017, 3, 14, 0, 30)
if t[0] < Date:
return("This system may be vulnerable to MS17-010")
return("Last restart: "+t[1])
#####################
def IsSigningEnabled(data):
if data[39] == "\x0f":
return True
else:
return False
def atod(a):
return struct.unpack("!L",inet_aton(a))[0]
def dtoa(d):
return inet_ntoa(struct.pack("!L", d))
def OsNameClientVersion(data):
try:
length = struct.unpack('<H',data[43:45].encode('latin-1'))[0]
if length > 255:
OsVersion, ClientVersion = tuple([e.replace("\x00", "") for e in data[47+length:].split('\x00\x00\x00')[:2]])
return OsVersion, ClientVersion
if length <= 255:
OsVersion, ClientVersion = tuple([e.replace("\x00", "") for e in data[46+length:].split('\x00\x00\x00')[:2]])
return OsVersion, ClientVersion
except:
return "Could not fingerprint Os version.", "Could not fingerprint LanManager Client version"
def GetHostnameAndDomainName(data):
try:
data = NetworkRecvBufferPython2or3(data)
DomainJoined, Hostname = tuple([e.replace("\x00", "") for e in data[81:].split('\x00\x00\x00')[:2]])
#If max length domain name, there won't be a \x00\x00\x00 delineator to split on
if Hostname == '':
DomainJoined = data[81:110].decode('latin-1')
Hostname = data[113:].decode('latin-1')
return Hostname, DomainJoined
except:
pass
return "Could not get Hostname.", "Could not get Domain joined"
def DomainGrab(Host):
global SMB1
try:
s = socket(AF_INET, SOCK_STREAM)
s.settimeout(0.7)
s.connect(Host)
h = SMBHeaderLanMan(cmd="\x72",mid="\x01\x00",flag1="\x00", flag2="\x00\x00")
n = SMBNegoDataLanMan()
packet0 = str(h)+str(n)
buffer0 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer0))
data = s.recv(2048)
s.close()
if data[8:10] == b'\x72\x00':
return GetHostnameAndDomainName(data)
except IOError as e:
if e.errno == errno.ECONNRESET:
SMB1 = "Disabled"
return False
else:
return False
def SmbFinger(Host):
s = socket(AF_INET, SOCK_STREAM)
try:
s.settimeout(Timeout)
s.connect(Host)
except:
pass
try:
h = SMBHeader(cmd="\x72",flag1="\x18",flag2="\x53\xc8")
n = SMBNego(Data = SMBNegoData())
n.calculate()
packet0 = str(h)+str(n)
buffer0 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer0))
data = s.recv(2048)
signing = IsSigningEnabled(data)
if data[8:10] == b'\x72\x00':
head = SMBHeader(cmd="\x73",flag1="\x18",flag2="\x17\xc8",uid="\x00\x00")
t = SMBSessionFingerData()
packet0 = str(head)+str(t)
buffer1 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer1))
data = s.recv(2048)
if data[8:10] == b'\x73\x16':
OsVersion, ClientVersion = OsNameClientVersion(NetworkRecvBufferPython2or3(data))
return signing, OsVersion, ClientVersion
except:
pass
def check_smb_null_session(host):
s = socket(AF_INET, SOCK_STREAM)
try:
s.settimeout(Timeout)
s.connect(host)
h = SMBHeader(cmd="\x72",flag1="\x18", flag2="\x53\xc8")
n = SMBNego(Data = SMBNegoData())
n.calculate()
packet0 = str(h)+str(n)
buffer0 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer0))
data = s.recv(2048)
if data[8:10] == b'\x72\x00':
h = SMBHeader(cmd="\x73",flag1="\x18", flag2="\x17\xc8",mid="\x40\x00")
n = SMBSessionData()
n.calculate()
packet0 = str(h)+str(n)
buffer0 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer0))
data = s.recv(2048)
if data[8:10] == b'\x73\x16':
h = SMBHeader(cmd="\x73",flag1="\x18", flag2="\x17\xc8",uid=data[32:34].decode('latin-1'),mid="\x80\x00")
n = SMBSession2()
n.calculate()
packet0 = str(h)+str(n)
buffer0 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer0))
data = s.recv(2048)
if data[8:10] == b'\x73\x00':
h = SMBHeader(cmd="\x75",flag1="\x18", flag2="\x07\xc8",uid=data[32:34].decode('latin-1'),mid="\xc0\x00")
n = SMBTreeConnectData()
n.calculate()
packet0 = str(h)+str(n)
buffer0 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer0))
data = s.recv(2048)
if data[8:10] == b'\x75\x00':
return True
else:
return False
except Exception:
return False
##################
#SMB2 part:
def ConnectAndChoseSMB(host):
try:
s = socket(AF_INET, SOCK_STREAM)
s.settimeout(0.7)
s.connect(host)
except:
return None
h = SMBHeader(cmd="\x72",flag1="\x00")
n = SMBNego(Data = SMB2NegoData())
n.calculate()
packet0 = str(h)+str(n)
buffer0 = longueur(packet0)+packet0
s.send(NetworkSendBufferPython2or3(buffer0))
data = s.recv(4096)
if ParseNegotiateSMB2Ans(data):
try:
while True:
s.send(NetworkSendBufferPython2or3(handle(data.decode('latin-1'), host)))
data = s.recv(4096)
if not data:
break
except Exception:
pass
else:
return False
def handle(data, host):
if data[28] == "\x00":
a = SMBv2Head()
a.calculate()
b = SMBv2Negotiate()
b.calculate()
packet0 =str(a)+str(b)
buffer0 = longueur(packet0)+packet0
return buffer0
if data[28] == "\x01":
global Bootime
SMB2SigningMandatory(data)
Bootime = IsDCVuln(GetBootTime(data[116:124]), host[0])
a = SMBv2Head(SMBv2Command="\x01\x00",CommandSequence= "\x02\x00\x00\x00\x00\x00\x00\x00")
a.calculate()
b = SMBv2Session1()
b.calculate()
packet0 =str(a)+str(b)
buffer0 = longueur(packet0)+packet0
return buffer0
if data[28] == "\x02":
ParseSMBNTLM2Exchange(data, host[0], Bootime, SMB2signing)
##################
#run it
def ShowResults(Host):
if ConnectAndChoseSMB((Host,445)) == False:
try:
Hostname, DomainJoined = DomainGrab((Host, 445))
Signing, OsVer, LanManClient = SmbFinger((Host, 445))
NullSess = check_smb_null_session((Host, 445))
print(("Retrieving information for %s..."%(Host)))
print(("SMB signing: %s"%(Signing)))
print(("Null Sessions Allowed: %s"%(NullSess)))
print(("OS version: '%s'\nLanman Client: '%s'"%(OsVer, LanManClient)))
print(("Machine Hostname: '%s'\nThis machine is part of the '%s' domain"%(Hostname, DomainJoined)))
print(("RDP port open: '%s'\n"%(IsRDPOn((Host,3389)))))
except:
return False
def ShowSmallResults(Host):
if ConnectAndChoseSMB((Host,445)) == False:
try:
Hostname, DomainJoined = DomainGrab((Host, 445))
Signing, OsVer, LanManClient = SmbFinger((Host, 445))
NullSess = check_smb_null_session((Host, 445))
print(("[SMB1]:['{}', Os:'{}', Domain:'{}', Signing:'{}', Null Session: '{}', RDP:'{}']".format(Host, OsVer, DomainJoined, Signing, NullSess,IsRDPOn((Host,3389)))))
except:
return False
def IsRDPOn(Host):
s = socket(AF_INET, SOCK_STREAM)
try:
s.settimeout(Timeout)
s.connect(Host)
if s:
return True
else:
return False
except Exception as err:
return False
def RunFinger(Host):
m = re.search("/", str(Host))
if m:
net,_,mask = Host.partition('/')
mask = int(mask)
net = atod(net)
threads = []
"""
if options.grep_output:
func = ShowSmallResults
else:
func = ShowResults
"""
func = ShowSmallResults
for host in (dtoa(net+n) for n in range(0, 1<<32-mask)):
p = multiprocessing.Process(target=func, args=((host),))
threads.append(p)
p.start()
else:
ShowSmallResults(Host)
RunFinger(Host)
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