676 lines
21 KiB
C
676 lines
21 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* NTLM Security Package (Message)
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*
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* Copyright 2011-2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ntlm.h"
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#include "../sspi.h"
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#include <freerdp/utils/stream.h>
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#include <freerdp/utils/hexdump.h>
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#include "ntlm_compute.h"
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#include "ntlm_message.h"
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#define NTLMSSP_NEGOTIATE_56 0x80000000 /* W (0) */
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#define NTLMSSP_NEGOTIATE_KEY_EXCH 0x40000000 /* V (1) */
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#define NTLMSSP_NEGOTIATE_128 0x20000000 /* U (2) */
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#define NTLMSSP_RESERVED1 0x10000000 /* r1 (3) */
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#define NTLMSSP_RESERVED2 0x08000000 /* r2 (4) */
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#define NTLMSSP_RESERVED3 0x04000000 /* r3 (5) */
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#define NTLMSSP_NEGOTIATE_VERSION 0x02000000 /* T (6) */
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#define NTLMSSP_RESERVED4 0x01000000 /* r4 (7) */
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#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x00800000 /* S (8) */
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#define NTLMSSP_RESERVEDEQUEST_NON_NT_SESSION_KEY 0x00400000 /* R (9) */
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#define NTLMSSP_RESERVED5 0x00200000 /* r5 (10) */
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#define NTLMSSP_NEGOTIATE_IDENTIFY 0x00100000 /* Q (11) */
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#define NTLMSSP_NEGOTIATE_EXTENDED_SESSION_SECURITY 0x00080000 /* P (12) */
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#define NTLMSSP_RESERVED6 0x00040000 /* r6 (13) */
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#define NTLMSSP_TARGET_TYPE_SERVER 0x00020000 /* O (14) */
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#define NTLMSSP_TARGET_TYPE_DOMAIN 0x00010000 /* N (15) */
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#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x00008000 /* M (16) */
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#define NTLMSSP_RESERVED7 0x00004000 /* r7 (17) */
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#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x00002000 /* L (18) */
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#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x00001000 /* K (19) */
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#define NTLMSSP_NEGOTIATE_ANONYMOUS 0x00000800 /* J (20) */
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#define NTLMSSP_RESERVED8 0x00000400 /* r8 (21) */
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#define NTLMSSP_NEGOTIATE_NTLM 0x00000200 /* H (22) */
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#define NTLMSSP_RESERVED9 0x00000100 /* r9 (23) */
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#define NTLMSSP_NEGOTIATE_LM_KEY 0x00000080 /* G (24) */
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#define NTLMSSP_NEGOTIATE_DATAGRAM 0x00000040 /* F (25) */
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#define NTLMSSP_NEGOTIATE_SEAL 0x00000020 /* E (26) */
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#define NTLMSSP_NEGOTIATE_SIGN 0x00000010 /* D (27) */
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#define NTLMSSP_RESERVED10 0x00000008 /* r10 (28) */
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#define NTLMSSP_REQUEST_TARGET 0x00000004 /* C (29) */
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#define NTLMSSP_NEGOTIATE_OEM 0x00000002 /* B (30) */
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#define NTLMSSP_NEGOTIATE_UNICODE 0x00000001 /* A (31) */
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#define WINDOWS_MAJOR_VERSION_5 0x05
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#define WINDOWS_MAJOR_VERSION_6 0x06
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#define WINDOWS_MINOR_VERSION_0 0x00
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#define WINDOWS_MINOR_VERSION_1 0x01
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#define WINDOWS_MINOR_VERSION_2 0x02
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#define NTLMSSP_REVISION_W2K3 0x0F
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#define MESSAGE_TYPE_NEGOTIATE 1
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#define MESSAGE_TYPE_CHALLENGE 2
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#define MESSAGE_TYPE_AUTHENTICATE 3
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static const char NTLM_SIGNATURE[] = "NTLMSSP";
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static const char* const NTLM_NEGOTIATE_STRINGS[] =
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{
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"NTLMSSP_NEGOTIATE_56",
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"NTLMSSP_NEGOTIATE_KEY_EXCH",
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"NTLMSSP_NEGOTIATE_128",
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"NTLMSSP_RESERVED1",
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"NTLMSSP_RESERVED2",
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"NTLMSSP_RESERVED3",
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"NTLMSSP_NEGOTIATE_VERSION",
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"NTLMSSP_RESERVED4",
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"NTLMSSP_NEGOTIATE_TARGET_INFO",
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"NTLMSSP_REQUEST_NON_NT_SESSION_KEY",
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"NTLMSSP_RESERVED5",
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"NTLMSSP_NEGOTIATE_IDENTIFY",
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"NTLMSSP_NEGOTIATE_EXTENDED_SESSION_SECURITY",
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"NTLMSSP_RESERVED6",
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"NTLMSSP_TARGET_TYPE_SERVER",
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"NTLMSSP_TARGET_TYPE_DOMAIN",
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"NTLMSSP_NEGOTIATE_ALWAYS_SIGN",
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"NTLMSSP_RESERVED7",
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"NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED",
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"NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED",
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"NTLMSSP_NEGOTIATE_ANONYMOUS",
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"NTLMSSP_RESERVED8",
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"NTLMSSP_NEGOTIATE_NTLM",
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"NTLMSSP_RESERVED9",
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"NTLMSSP_NEGOTIATE_LM_KEY",
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"NTLMSSP_NEGOTIATE_DATAGRAM",
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"NTLMSSP_NEGOTIATE_SEAL",
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"NTLMSSP_NEGOTIATE_SIGN",
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"NTLMSSP_RESERVED10",
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"NTLMSSP_REQUEST_TARGET",
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"NTLMSSP_NEGOTIATE_OEM",
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"NTLMSSP_NEGOTIATE_UNICODE"
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};
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/**
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* Output VERSION structure.\n
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* VERSION @msdn{cc236654}
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* @param s
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*/
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void ntlm_output_version(STREAM* s)
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{
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/* The following version information was observed with Windows 7 */
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stream_write_uint8(s, WINDOWS_MAJOR_VERSION_6); /* ProductMajorVersion (1 byte) */
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stream_write_uint8(s, WINDOWS_MINOR_VERSION_1); /* ProductMinorVersion (1 byte) */
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stream_write_uint16(s, 7600); /* ProductBuild (2 bytes) */
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stream_write_zero(s, 3); /* Reserved (3 bytes) */
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stream_write_uint8(s, NTLMSSP_REVISION_W2K3); /* NTLMRevisionCurrent (1 byte) */
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}
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void ntlm_print_negotiate_flags(uint32 flags)
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{
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int i;
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const char* str;
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printf("negotiateFlags \"0x%08X\"{\n", flags);
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for (i = 31; i >= 0; i--)
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{
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if ((flags >> i) & 1)
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{
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str = NTLM_NEGOTIATE_STRINGS[(31 - i)];
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printf("\t%s (%d),\n", str, (31 - i));
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}
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}
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printf("}\n");
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}
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SECURITY_STATUS ntlm_write_NegotiateMessage(NTLM_CONTEXT* context, SEC_BUFFER* buffer)
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{
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STREAM* s;
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int length;
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uint32 negotiateFlags = 0;
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s = stream_new(0);
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stream_attach(s, buffer->pvBuffer, buffer->cbBuffer);
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stream_write(s, NTLM_SIGNATURE, 8); /* Signature (8 bytes) */
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stream_write_uint32(s, MESSAGE_TYPE_NEGOTIATE); /* MessageType */
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if (context->ntlm_v2)
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{
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negotiateFlags |= NTLMSSP_NEGOTIATE_56;
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negotiateFlags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
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negotiateFlags |= NTLMSSP_NEGOTIATE_128;
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negotiateFlags |= NTLMSSP_NEGOTIATE_VERSION;
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negotiateFlags |= NTLMSSP_NEGOTIATE_EXTENDED_SESSION_SECURITY;
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negotiateFlags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
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negotiateFlags |= NTLMSSP_NEGOTIATE_NTLM;
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negotiateFlags |= NTLMSSP_NEGOTIATE_LM_KEY;
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negotiateFlags |= NTLMSSP_NEGOTIATE_SEAL;
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negotiateFlags |= NTLMSSP_NEGOTIATE_SIGN;
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negotiateFlags |= NTLMSSP_REQUEST_TARGET;
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negotiateFlags |= NTLMSSP_NEGOTIATE_OEM;
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negotiateFlags |= NTLMSSP_NEGOTIATE_UNICODE;
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}
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else
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{
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negotiateFlags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
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negotiateFlags |= NTLMSSP_NEGOTIATE_128;
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negotiateFlags |= NTLMSSP_NEGOTIATE_EXTENDED_SESSION_SECURITY;
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negotiateFlags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
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negotiateFlags |= NTLMSSP_NEGOTIATE_NTLM;
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negotiateFlags |= NTLMSSP_NEGOTIATE_SEAL;
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negotiateFlags |= NTLMSSP_NEGOTIATE_SIGN;
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negotiateFlags |= NTLMSSP_REQUEST_TARGET;
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negotiateFlags |= NTLMSSP_NEGOTIATE_UNICODE;
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}
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context->NegotiateFlags = negotiateFlags;
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stream_write_uint32(s, negotiateFlags); /* NegotiateFlags (4 bytes) */
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/* only set if NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED is set */
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/* DomainNameFields (8 bytes) */
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stream_write_uint16(s, 0); /* DomainNameLen */
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stream_write_uint16(s, 0); /* DomainNameMaxLen */
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stream_write_uint32(s, 0); /* DomainNameBufferOffset */
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/* only set if NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED is set */
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/* WorkstationFields (8 bytes) */
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stream_write_uint16(s, 0); /* WorkstationLen */
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stream_write_uint16(s, 0); /* WorkstationMaxLen */
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stream_write_uint32(s, 0); /* WorkstationBufferOffset */
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if (negotiateFlags & NTLMSSP_NEGOTIATE_VERSION)
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{
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/* Only present if NTLMSSP_NEGOTIATE_VERSION is set */
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ntlm_output_version(s);
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#ifdef WITH_DEBUG_NTLM
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printf("Version (length = 8)\n");
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freerdp_hexdump((s->p - 8), 8);
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printf("\n");
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#endif
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}
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length = s->p - s->data;
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buffer->cbBuffer = length;
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sspi_SecBufferAlloc(&context->NegotiateMessage, length);
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memcpy(context->NegotiateMessage.pvBuffer, buffer->pvBuffer, buffer->cbBuffer);
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context->NegotiateMessage.BufferType = buffer->BufferType;
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#ifdef WITH_DEBUG_NTLM
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printf("NEGOTIATE_MESSAGE (length = %d)\n", length);
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freerdp_hexdump(s->data, length);
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printf("\n");
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#endif
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context->state = NTLM_STATE_CHALLENGE;
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return SEC_I_CONTINUE_NEEDED;
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}
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SECURITY_STATUS ntlm_read_ChallengeMessage(NTLM_CONTEXT* context, SEC_BUFFER* buffer)
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{
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uint8* p;
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STREAM* s;
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int length;
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char signature[8];
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uint32 messageType;
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uint8* start_offset;
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uint8* payload_offset;
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uint16 targetNameLen;
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uint16 targetNameMaxLen;
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uint32 targetNameBufferOffset;
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uint16 targetInfoLen;
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uint16 targetInfoMaxLen;
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uint32 targetInfoBufferOffset;
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s = stream_new(0);
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stream_attach(s, buffer->pvBuffer, buffer->cbBuffer);
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stream_read(s, signature, 8);
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stream_read_uint32(s, messageType);
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if (memcmp(signature, NTLM_SIGNATURE, 8) != 0)
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{
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printf("Unexpected NTLM signature: %s, expected:%s\n", signature, NTLM_SIGNATURE);
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return SEC_E_INVALID_TOKEN;
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}
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start_offset = s->p - 12;
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/* TargetNameFields (8 bytes) */
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stream_read_uint16(s, targetNameLen); /* TargetNameLen (2 bytes) */
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stream_read_uint16(s, targetNameMaxLen); /* TargetNameMaxLen (2 bytes) */
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stream_read_uint32(s, targetNameBufferOffset); /* TargetNameBufferOffset (4 bytes) */
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stream_read_uint32(s, context->NegotiateFlags); /* NegotiateFlags (4 bytes) */
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#ifdef WITH_DEBUG_NTLM
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ntlm_print_negotiate_flags(context->NegotiateFlags);
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#endif
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stream_read(s, context->ServerChallenge, 8); /* ServerChallenge (8 bytes) */
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stream_seek(s, 8); /* Reserved (8 bytes), should be ignored */
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/* TargetInfoFields (8 bytes) */
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stream_read_uint16(s, targetInfoLen); /* TargetInfoLen (2 bytes) */
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stream_read_uint16(s, targetInfoMaxLen); /* TargetInfoMaxLen (2 bytes) */
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stream_read_uint32(s, targetInfoBufferOffset); /* TargetInfoBufferOffset (4 bytes) */
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/* only present if NTLMSSP_NEGOTIATE_VERSION is set */
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if (context->NegotiateFlags & NTLMSSP_NEGOTIATE_VERSION)
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{
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stream_seek(s, 8); /* Version (8 bytes), can be ignored */
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}
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/* Payload (variable) */
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payload_offset = s->p;
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if (targetNameLen > 0)
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{
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p = start_offset + targetNameBufferOffset;
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sspi_SecBufferAlloc(&context->TargetName, targetNameLen);
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memcpy(context->TargetName.pvBuffer, p, targetNameLen);
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#ifdef WITH_DEBUG_NTLM
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printf("TargetName (length = %d, offset = %d)\n", targetNameLen, targetNameBufferOffset);
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freerdp_hexdump(context->TargetName.pvBuffer, context->TargetName.cbBuffer);
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printf("\n");
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#endif
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}
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if (targetInfoLen > 0)
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{
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p = start_offset + targetInfoBufferOffset;
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sspi_SecBufferAlloc(&context->TargetInfo, targetInfoLen);
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memcpy(context->TargetInfo.pvBuffer, p, targetInfoLen);
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#ifdef WITH_DEBUG_NTLM
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printf("TargetInfo (length = %d, offset = %d)\n", targetInfoLen, targetInfoBufferOffset);
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freerdp_hexdump(context->TargetInfo.pvBuffer, context->TargetInfo.cbBuffer);
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printf("\n");
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#endif
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if (context->ntlm_v2)
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{
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s->p = p;
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ntlm_input_av_pairs(context, s);
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}
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}
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length = (payload_offset - start_offset) + targetNameLen + targetInfoLen;
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sspi_SecBufferAlloc(&context->ChallengeMessage, length);
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memcpy(context->ChallengeMessage.pvBuffer, start_offset, length);
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#ifdef WITH_DEBUG_NTLM
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printf("CHALLENGE_MESSAGE (length = %d)\n", length);
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freerdp_hexdump(context->ChallengeMessage.pvBuffer, context->ChallengeMessage.cbBuffer);
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printf("\n");
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#endif
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/* AV_PAIRs */
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if (context->ntlm_v2)
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ntlm_populate_av_pairs(context);
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/* Timestamp */
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ntlm_generate_timestamp(context);
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/* LmChallengeResponse */
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ntlm_compute_lm_v2_response(context);
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if (context->ntlm_v2)
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memset(context->LmChallengeResponse.pvBuffer, 0, context->LmChallengeResponse.cbBuffer);
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/* NtChallengeResponse */
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ntlm_compute_ntlm_v2_response(context);
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/* KeyExchangeKey */
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ntlm_generate_key_exchange_key(context);
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/* EncryptedRandomSessionKey */
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ntlm_encrypt_random_session_key(context);
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/* Generate signing keys */
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ntlm_generate_client_signing_key(context);
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ntlm_generate_server_signing_key(context);
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/* Generate sealing keys */
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ntlm_generate_client_sealing_key(context);
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ntlm_generate_server_sealing_key(context);
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/* Initialize RC4 seal state using client sealing key */
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ntlm_init_rc4_seal_states(context);
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#ifdef WITH_DEBUG_NTLM
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printf("ClientChallenge\n");
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freerdp_hexdump(context->ClientChallenge, 8);
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printf("\n");
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printf("ServerChallenge\n");
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freerdp_hexdump(context->ServerChallenge, 8);
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printf("\n");
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printf("SessionBaseKey\n");
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freerdp_hexdump(context->SessionBaseKey, 16);
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printf("\n");
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printf("KeyExchangeKey\n");
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freerdp_hexdump(context->KeyExchangeKey, 16);
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printf("\n");
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printf("ExportedSessionKey\n");
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freerdp_hexdump(context->ExportedSessionKey, 16);
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printf("\n");
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printf("RandomSessionKey\n");
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freerdp_hexdump(context->RandomSessionKey, 16);
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printf("\n");
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printf("ClientSignKey\n");
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freerdp_hexdump(context->ClientSigningKey, 16);
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printf("\n");
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printf("ClientSealingKey\n");
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freerdp_hexdump(context->ClientSealingKey, 16);
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printf("\n");
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printf("Timestamp\n");
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freerdp_hexdump(context->Timestamp, 8);
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printf("\n");
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#endif
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context->state = NTLM_STATE_AUTHENTICATE;
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return SEC_I_CONTINUE_NEEDED;
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}
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/**
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* Send NTLMSSP AUTHENTICATE_MESSAGE.\n
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* AUTHENTICATE_MESSAGE @msdn{cc236643}
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* @param NTLM context
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* @param buffer
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*/
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SECURITY_STATUS ntlm_write_AuthenticateMessage(NTLM_CONTEXT* context, SEC_BUFFER* buffer)
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{
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STREAM* s;
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int length;
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uint8* mic_offset = NULL;
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uint32 negotiateFlags = 0;
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uint16 DomainNameLen;
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uint16 UserNameLen;
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uint16 WorkstationLen;
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uint16 LmChallengeResponseLen;
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uint16 NtChallengeResponseLen;
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uint16 EncryptedRandomSessionKeyLen;
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uint32 PayloadBufferOffset;
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uint32 DomainNameBufferOffset;
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uint32 UserNameBufferOffset;
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uint32 WorkstationBufferOffset;
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uint32 LmChallengeResponseBufferOffset;
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uint32 NtChallengeResponseBufferOffset;
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uint32 EncryptedRandomSessionKeyBufferOffset;
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uint8* UserNameBuffer;
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uint8* DomainNameBuffer;
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uint8* WorkstationBuffer;
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uint8* EncryptedRandomSessionKeyBuffer;
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WorkstationLen = context->WorkstationLength;
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WorkstationBuffer = (uint8*) context->Workstation;
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s = stream_new(0);
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stream_attach(s, buffer->pvBuffer, buffer->cbBuffer);
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if (context->ntlm_v2 < 1)
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WorkstationLen = 0;
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DomainNameLen = context->identity.DomainLength;
|
|
DomainNameBuffer = (uint8*) context->identity.Domain;
|
|
|
|
UserNameLen = context->identity.UserLength;
|
|
UserNameBuffer = (uint8*) context->identity.User;
|
|
|
|
LmChallengeResponseLen = context->LmChallengeResponse.cbBuffer;
|
|
NtChallengeResponseLen = context->NtChallengeResponse.cbBuffer;
|
|
|
|
EncryptedRandomSessionKeyLen = 16;
|
|
EncryptedRandomSessionKeyBuffer = context->EncryptedRandomSessionKey;
|
|
|
|
if (context->ntlm_v2)
|
|
{
|
|
/* observed: 35 82 88 e2 (0xE2888235) */
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_56;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_128;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_VERSION;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_TARGET_INFO;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_EXTENDED_SESSION_SECURITY;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_NTLM;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_SEAL;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_SIGN;
|
|
negotiateFlags |= NTLMSSP_REQUEST_TARGET;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_UNICODE;
|
|
}
|
|
else
|
|
{
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_128;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_EXTENDED_SESSION_SECURITY;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_NTLM;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_SEAL;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_SIGN;
|
|
negotiateFlags |= NTLMSSP_REQUEST_TARGET;
|
|
negotiateFlags |= NTLMSSP_NEGOTIATE_UNICODE;
|
|
}
|
|
|
|
if (context->ntlm_v2)
|
|
PayloadBufferOffset = 80; /* starting buffer offset */
|
|
else
|
|
PayloadBufferOffset = 64; /* starting buffer offset */
|
|
|
|
if (negotiateFlags & NTLMSSP_NEGOTIATE_VERSION)
|
|
PayloadBufferOffset += 8;
|
|
|
|
DomainNameBufferOffset = PayloadBufferOffset;
|
|
UserNameBufferOffset = DomainNameBufferOffset + DomainNameLen;
|
|
WorkstationBufferOffset = UserNameBufferOffset + UserNameLen;
|
|
LmChallengeResponseBufferOffset = WorkstationBufferOffset + WorkstationLen;
|
|
NtChallengeResponseBufferOffset = LmChallengeResponseBufferOffset + LmChallengeResponseLen;
|
|
EncryptedRandomSessionKeyBufferOffset = NtChallengeResponseBufferOffset + NtChallengeResponseLen;
|
|
|
|
stream_write(s, NTLM_SIGNATURE, 8); /* Signature (8 bytes) */
|
|
stream_write_uint32(s, MESSAGE_TYPE_AUTHENTICATE); /* MessageType */
|
|
|
|
/* LmChallengeResponseFields (8 bytes) */
|
|
stream_write_uint16(s, LmChallengeResponseLen); /* LmChallengeResponseLen */
|
|
stream_write_uint16(s, LmChallengeResponseLen); /* LmChallengeResponseMaxLen */
|
|
stream_write_uint32(s, LmChallengeResponseBufferOffset); /* LmChallengeResponseBufferOffset */
|
|
|
|
/* NtChallengeResponseFields (8 bytes) */
|
|
stream_write_uint16(s, NtChallengeResponseLen); /* NtChallengeResponseLen */
|
|
stream_write_uint16(s, NtChallengeResponseLen); /* NtChallengeResponseMaxLen */
|
|
stream_write_uint32(s, NtChallengeResponseBufferOffset); /* NtChallengeResponseBufferOffset */
|
|
|
|
/* only set if NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED is set */
|
|
|
|
/* DomainNameFields (8 bytes) */
|
|
stream_write_uint16(s, DomainNameLen); /* DomainNameLen */
|
|
stream_write_uint16(s, DomainNameLen); /* DomainNameMaxLen */
|
|
stream_write_uint32(s, DomainNameBufferOffset); /* DomainNameBufferOffset */
|
|
|
|
/* UserNameFields (8 bytes) */
|
|
stream_write_uint16(s, UserNameLen); /* UserNameLen */
|
|
stream_write_uint16(s, UserNameLen); /* UserNameMaxLen */
|
|
stream_write_uint32(s, UserNameBufferOffset); /* UserNameBufferOffset */
|
|
|
|
/* only set if NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED is set */
|
|
|
|
/* WorkstationFields (8 bytes) */
|
|
stream_write_uint16(s, WorkstationLen); /* WorkstationLen */
|
|
stream_write_uint16(s, WorkstationLen); /* WorkstationMaxLen */
|
|
stream_write_uint32(s, WorkstationBufferOffset); /* WorkstationBufferOffset */
|
|
|
|
/* EncryptedRandomSessionKeyFields (8 bytes) */
|
|
stream_write_uint16(s, EncryptedRandomSessionKeyLen); /* EncryptedRandomSessionKeyLen */
|
|
stream_write_uint16(s, EncryptedRandomSessionKeyLen); /* EncryptedRandomSessionKeyMaxLen */
|
|
stream_write_uint32(s, EncryptedRandomSessionKeyBufferOffset); /* EncryptedRandomSessionKeyBufferOffset */
|
|
|
|
stream_write_uint32(s, negotiateFlags); /* NegotiateFlags (4 bytes) */
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
ntlm_print_negotiate_flags(negotiateFlags);
|
|
#endif
|
|
|
|
if (negotiateFlags & NTLMSSP_NEGOTIATE_VERSION)
|
|
{
|
|
/* Only present if NTLMSSP_NEGOTIATE_VERSION is set */
|
|
ntlm_output_version(s);
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("Version (length = 8)\n");
|
|
freerdp_hexdump((s->p - 8), 8);
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
if (context->ntlm_v2)
|
|
{
|
|
/* Message Integrity Check */
|
|
mic_offset = s->p;
|
|
stream_write_zero(s, 16);
|
|
}
|
|
|
|
/* DomainName */
|
|
if (DomainNameLen > 0)
|
|
{
|
|
stream_write(s, DomainNameBuffer, DomainNameLen);
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("DomainName (length = %d, offset = %d)\n", DomainNameLen, DomainNameBufferOffset);
|
|
freerdp_hexdump(DomainNameBuffer, DomainNameLen);
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
/* UserName */
|
|
stream_write(s, UserNameBuffer, UserNameLen);
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("UserName (length = %d, offset = %d)\n", UserNameLen, UserNameBufferOffset);
|
|
freerdp_hexdump(UserNameBuffer, UserNameLen);
|
|
printf("\n");
|
|
#endif
|
|
|
|
/* Workstation */
|
|
if (WorkstationLen > 0)
|
|
{
|
|
stream_write(s, WorkstationBuffer, WorkstationLen);
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("Workstation (length = %d, offset = %d)\n", WorkstationLen, WorkstationBufferOffset);
|
|
freerdp_hexdump(WorkstationBuffer, WorkstationLen);
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
/* LmChallengeResponse */
|
|
stream_write(s, context->LmChallengeResponse.pvBuffer, LmChallengeResponseLen);
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("LmChallengeResponse (length = %d, offset = %d)\n", LmChallengeResponseLen, LmChallengeResponseBufferOffset);
|
|
freerdp_hexdump(context->LmChallengeResponse.pvBuffer, LmChallengeResponseLen);
|
|
printf("\n");
|
|
#endif
|
|
|
|
/* NtChallengeResponse */
|
|
stream_write(s, context->NtChallengeResponse.pvBuffer, NtChallengeResponseLen);
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
if (context->ntlm_v2)
|
|
{
|
|
ntlm_print_av_pairs(context);
|
|
|
|
printf("targetInfo (length = %d)\n", context->TargetInfo.cbBuffer);
|
|
freerdp_hexdump(context->TargetInfo.pvBuffer, context->TargetInfo.cbBuffer);
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("NtChallengeResponse (length = %d, offset = %d)\n", NtChallengeResponseLen, NtChallengeResponseBufferOffset);
|
|
freerdp_hexdump(context->NtChallengeResponse.pvBuffer, NtChallengeResponseLen);
|
|
printf("\n");
|
|
#endif
|
|
|
|
/* EncryptedRandomSessionKey */
|
|
stream_write(s, EncryptedRandomSessionKeyBuffer, EncryptedRandomSessionKeyLen);
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("EncryptedRandomSessionKey (length = %d, offset = %d)\n", EncryptedRandomSessionKeyLen, EncryptedRandomSessionKeyBufferOffset);
|
|
freerdp_hexdump(EncryptedRandomSessionKeyBuffer, EncryptedRandomSessionKeyLen);
|
|
printf("\n");
|
|
#endif
|
|
|
|
length = s->p - s->data;
|
|
sspi_SecBufferAlloc(&context->AuthenticateMessage, length);
|
|
memcpy(context->AuthenticateMessage.pvBuffer, s->data, length);
|
|
buffer->cbBuffer = length;
|
|
|
|
if (context->ntlm_v2)
|
|
{
|
|
/* Message Integrity Check */
|
|
ntlm_compute_message_integrity_check(context);
|
|
|
|
s->p = mic_offset;
|
|
stream_write(s, context->MessageIntegrityCheck, 16);
|
|
s->p = s->data + length;
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("MessageIntegrityCheck (length = 16)\n");
|
|
freerdp_hexdump(mic_offset, 16);
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
printf("AUTHENTICATE_MESSAGE (length = %d)\n", length);
|
|
freerdp_hexdump(s->data, length);
|
|
printf("\n");
|
|
#endif
|
|
|
|
context->state = NTLM_STATE_FINAL;
|
|
|
|
return SEC_I_COMPLETE_NEEDED;
|
|
}
|