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com.hierynomus.ntlm.messages.NtlmAuthenticate Maven / Gradle / Ivy
/*
* Copyright (C)2016 - SMBJ Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hierynomus.ntlm.messages;
import com.hierynomus.protocol.commons.Charsets;
import com.hierynomus.protocol.commons.EnumWithValue;
import com.hierynomus.protocol.commons.buffer.Buffer;
import com.hierynomus.protocol.commons.buffer.Endian;
import static com.hierynomus.ntlm.functions.NtlmFunctions.unicode;
/**
* [MS-NLMP].pdf 2.2.1.3 AUTHENTICATE_MESSAGE
*/
public class NtlmAuthenticate extends NtlmPacket {
private static byte[] EMPTY = new byte[0];
private byte[] lmResponse;
private byte[] ntResponse;
private byte[] userName;
private byte[] domainName;
private byte[] workstation;
private byte[] encryptedRandomSessionKey;
private long negotiateFlags;
private boolean useMic;
private byte[] mic;
public NtlmAuthenticate(
byte[] lmResponse, byte[] ntResponse,
String userName, String domainName, String workstation,
byte[] encryptedRandomSessionKey, long negotiateFlags,
boolean useMic) {
super();
this.lmResponse = ensureNotNull(lmResponse);
this.ntResponse = ensureNotNull(ntResponse);
this.userName = ensureNotNull(userName);
this.domainName = ensureNotNull(domainName);
this.workstation = ensureNotNull(workstation);
this.encryptedRandomSessionKey = ensureNotNull(encryptedRandomSessionKey);
this.negotiateFlags = negotiateFlags;
this.useMic = useMic;
}
@Override
public void write(Buffer.PlainBuffer buffer) {
writeAutentificateMessage(buffer);
if (useMic) {
// MIC (16 bytes) provided if in AvPairType is key MsvAvFlags with value & 0x00000002 is true
buffer.putRawBytes(mic);
}
// Payload
buffer.putRawBytes(lmResponse);
buffer.putRawBytes(ntResponse);
buffer.putRawBytes(domainName);
buffer.putRawBytes(userName);
buffer.putRawBytes(workstation);
buffer.putRawBytes(encryptedRandomSessionKey);
}
public void setMic(byte[] mic) {
this.mic = mic;
}
public void writeAutentificateMessage(Buffer.PlainBuffer buffer) {
buffer.putString("NTLMSSP\0", Charsets.UTF_8); // Signature (8 bytes)
buffer.putUInt32(0x03); // MessageType (4 bytes)
int offset = 64; // for the offset
if (useMic) {
offset += 16;
}
if (EnumWithValue.EnumUtils.isSet(negotiateFlags, NtlmNegotiateFlag.NTLMSSP_NEGOTIATE_VERSION)) {
offset += 8;
}
offset = writeOffsettedByteArrayFields(buffer, lmResponse, offset); // LmChallengeResponseFields (8 bytes)
offset = writeOffsettedByteArrayFields(buffer, ntResponse, offset); // NtChallengeResponseFields (8 bytes)
offset = writeOffsettedByteArrayFields(buffer, domainName, offset); // DomainNameFields (8 bytes)
offset = writeOffsettedByteArrayFields(buffer, userName, offset); // UserNameFields (8 bytes)
offset = writeOffsettedByteArrayFields(buffer, workstation, offset); // WorkstationFields (8 bytes)
if (EnumWithValue.EnumUtils.isSet(negotiateFlags, NtlmNegotiateFlag.NTLMSSP_NEGOTIATE_KEY_EXCH)) {
offset = writeOffsettedByteArrayFields(buffer, encryptedRandomSessionKey, offset);
} else {
offset = writeOffsettedByteArrayFields(buffer, EMPTY, offset);
}
buffer.putUInt32(negotiateFlags); // NegotiateFlags (4 bytes)
if (EnumWithValue.EnumUtils.isSet(negotiateFlags, NtlmNegotiateFlag.NTLMSSP_NEGOTIATE_VERSION)) {
buffer.putRawBytes(getVersion()); // Version (8 bytes)
}
}
/**
* MS-NLMP 2.2.2.10 VERSION
*
* @return
*/
public byte[] getVersion() {
Buffer.PlainBuffer plainBuffer = new Buffer.PlainBuffer(Endian.LE);
plainBuffer.putByte((byte) 0x06); // Major Version 6
plainBuffer.putByte((byte) 0x01); // Minor Version 1
plainBuffer.putUInt16(7600); // Product Build 7600
byte[] reserved = {(byte) 0x00, (byte) 0x00, (byte) 0x00};
plainBuffer.putRawBytes(reserved); // Reserver 3 bytes
plainBuffer.putByte((byte) 0x0F); // NTLM Revision Current
return plainBuffer.getCompactData();
}
private int writeOffsettedByteArrayFields(Buffer.PlainBuffer buffer, byte[] bytes, int offset) {
byte[] arr = bytes != null ? bytes : EMPTY;
buffer.putUInt16(arr.length); // ArrayLen
buffer.putUInt16(arr.length); // ArrayMaxLen
buffer.putUInt32(offset); // ArrayOffset
return offset + arr.length;
}
private byte[] ensureNotNull(byte[] possiblyNull) {
return possiblyNull != null ? possiblyNull : EMPTY;
}
private byte[] ensureNotNull(String possiblyNull) {
return possiblyNull != null ? unicode(possiblyNull) : EMPTY;
}
}