Python impacket.ntlm.AV_PAIRS Examples

The following are 3 code examples of impacket.ntlm.AV_PAIRS(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module impacket.ntlm , or try the search function .
Example #1
Source File: httprelayserver.py    From GhostPotato with MIT License 5 votes vote down vote up 
def do_ntlm_negotiate(self, token, proxy):
            if self.target.scheme.upper() in self.server.config.protocolClients:
                self.client = self.server.config.protocolClients[self.target.scheme.upper()](self.server.config, self.target)
                # If connection failed, return
                if not self.client.initConnection():
                    return False
                self.challengeMessage = self.client.sendNegotiate(token)

                # Remove target NetBIOS field from the NTLMSSP_CHALLENGE
                if self.server.config.remove_target:
                    av_pairs = ntlm.AV_PAIRS(self.challengeMessage['TargetInfoFields'])
                    del av_pairs[ntlm.NTLMSSP_AV_HOSTNAME]
                    self.challengeMessage['TargetInfoFields'] = av_pairs.getData()
                    self.challengeMessage['TargetInfoFields_len'] = len(av_pairs.getData())
                    self.challengeMessage['TargetInfoFields_max_len'] = len(av_pairs.getData())

                # Check for errors
                if self.challengeMessage is False:
                    return False
            else:
                LOG.error('Protocol Client for %s not found!' % self.target.scheme.upper())
                return False

            #Calculate auth
            self.do_AUTHHEAD(message = b'NTLM '+base64.b64encode(self.challengeMessage.getData()), proxy=proxy)
            return True
Example #2
Source File: httprelayserver.py    From Slackor with GNU General Public License v3.0 5 votes vote down vote up 
def do_ntlm_negotiate(self, token, proxy):
            if self.target.scheme.upper() in self.server.config.protocolClients:
                self.client = self.server.config.protocolClients[self.target.scheme.upper()](self.server.config, self.target)
                # If connection failed, return
                if not self.client.initConnection():
                    return False
                self.challengeMessage = self.client.sendNegotiate(token)

                # Remove target NetBIOS field from the NTLMSSP_CHALLENGE
                if self.server.config.remove_target:
                    av_pairs = ntlm.AV_PAIRS(self.challengeMessage['TargetInfoFields'])
                    del av_pairs[ntlm.NTLMSSP_AV_HOSTNAME]
                    self.challengeMessage['TargetInfoFields'] = av_pairs.getData()
                    self.challengeMessage['TargetInfoFields_len'] = len(av_pairs.getData())
                    self.challengeMessage['TargetInfoFields_max_len'] = len(av_pairs.getData())

                # Check for errors
                if self.challengeMessage is False:
                    return False
            else:
                LOG.error('Protocol Client for %s not found!' % self.target.scheme.upper())
                return False

            #Calculate auth
            self.do_AUTHHEAD(message = b'NTLM '+base64.b64encode(self.challengeMessage.getData()), proxy=proxy)
            return True
Example #3
Source File: scan.py    From cve-2019-1040-scanner with MIT License 5 votes vote down vote up 
def mod_computeResponseNTLMv2(flags, serverChallenge, clientChallenge, serverName, domain, user, password, lmhash='',
                              nthash='', use_ntlmv2=USE_NTLMv2, check=False):

    responseServerVersion = b'\x01'
    hiResponseServerVersion = b'\x01'
    responseKeyNT = NTOWFv2(user, password, domain, nthash)

    av_pairs = AV_PAIRS(serverName)
    av_pairs[NTLMSSP_AV_TARGET_NAME] = 'cifs/'.encode('utf-16le') + av_pairs[NTLMSSP_AV_HOSTNAME][1]
    if av_pairs[NTLMSSP_AV_TIME] is not None:
        aTime = av_pairs[NTLMSSP_AV_TIME][1]
    else:
        aTime = struct.pack('<q', (116444736000000000 + calendar.timegm(time.gmtime()) * 10000000))
        av_pairs[NTLMSSP_AV_TIME] = aTime
    av_pairs[NTLMSSP_AV_FLAGS] = b'\x02' + b'\x00' * 3
    serverName = av_pairs.getData()

    temp = responseServerVersion + hiResponseServerVersion + b'\x00' * 6 + aTime + clientChallenge + b'\x00' * 4 + \
           serverName + b'\x00' * 4

    ntProofStr = hmac_md5(responseKeyNT, serverChallenge + temp)

    ntChallengeResponse = ntProofStr + temp
    lmChallengeResponse = hmac_md5(responseKeyNT, serverChallenge + clientChallenge) + clientChallenge
    sessionBaseKey = hmac_md5(responseKeyNT, ntProofStr)

    return ntChallengeResponse, lmChallengeResponse, sessionBaseKey