X-Git-Url: https://git.sesse.net/?p=rdpsrv;a=blobdiff_plain;f=secure.c;h=56c8bef117fba0929c4d2c3e129adfaf8be2bc44;hp=573b77d3598112f35fe5e9bbbfa8c60cf05e4705;hb=99f2e8c32508ab193c1d42221c86cb7fca4be9ab;hpb=d5d7588c8ae4d998f73076b4fdd149b206ca0e70

diff --git a/secure.c b/secure.c
index 573b77d..56c8bef 100644
--- a/secure.c
+++ b/secure.c
@@ -169,6 +169,8 @@ sec_generate_keys(uint8 * client_key, uint8 * server_key, int rc4_key_size)
 			printf("0x%02x ", sec_encrypt_key[i]);
 		printf("\n");
 	}
+
+	g_encryption = 1;
 }
 
 static uint8 pad_54[40] = {
@@ -264,6 +266,8 @@ sec_encrypt(uint8 * data, int length)
 		use_count = 0;
 	}
 
+	printf("RC4-ing %u bytes with DECRYPT, uc=%u\n", length, use_count);
+
 	RC4(&rc4_decrypt_key, length, data, data);
 	use_count++;
 }
@@ -342,10 +346,11 @@ sec_init(uint32 flags, int maxlen)
 	int hdrlen;
 	STREAM s;
 
-	/*if (!g_licence_issued) */
+	if (!g_licence_issued) 
 		hdrlen = (flags & SEC_ENCRYPT) ? 12 : 4;
-/*	else
-		hdrlen = (flags & SEC_ENCRYPT) ? 12 : 0; */
+	else
+		hdrlen = (flags & SEC_ENCRYPT) ? 12 : 0; 
+	printf("HDRLEN is %u\n", hdrlen);
 	s = mcs_init(maxlen + hdrlen);
 	s_push_layer(s, sec_hdr, hdrlen);
 
@@ -361,8 +366,9 @@ sec_send_to_channel(STREAM s, uint32 flags, uint16 channel)
 //	DEBUG(("sending packet to channel %u\n", channel));
 	
 	s_pop_layer(s, sec_hdr);
-//	if (!g_licence_issued || (flags & SEC_ENCRYPT))
+	if (!g_licence_issued || (flags & SEC_ENCRYPT)) {
 		out_uint32_le(s, flags);
+	}
 
 	if (flags & SEC_ENCRYPT)
 	{
@@ -375,6 +381,7 @@ sec_send_to_channel(STREAM s, uint32 flags, uint16 channel)
 #endif
 
 		sec_sign(s->p, 8, sec_sign_key, rc4_key_len, s->p + 8, datalen);
+		printf("First byte of signature is 0x%x, at %p\n", (s->p)[0], s->p);
 		sec_encrypt(s->p + 8, datalen);
 	}
 
@@ -729,6 +736,7 @@ sec_process_mcs_data(STREAM s)
 }
 
 extern unsigned char cacert[];
+extern BOOL g_licence_issued;
 
 unsigned char demand_license[] = {
 	0x01, 0x03, 0x86, 0x00, 0x9c, 0x6e, 0xef, 0x5a, 0x26, 0x45, 0x88, 0x86, 0x0e, 0xdf, 0xa4, 0x4a,
@@ -739,9 +747,93 @@ unsigned char demand_license[] = {
 	0x69, 0x00, 0x6f, 0x00, 0x6e, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x41, 0x00, 0x30, 0x00,
 	0x32, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0x04, 0xf6, 0x00, 0x00,
 	0x01, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x0e, 0x00, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x73, 0x6f, 0x66,
-	0x74, 0x2e, 0x63, 0x6f, 0x6d, 0x00
+	0x74, 0x2e, 0x63, 0x6f, 0x6d, 0x00 
+};
+unsigned char result_license[] = {
+        0xff, 0x03, 0x10, 0x00, 0x07, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0xa0, 0x5f, 0x00, 0x00
+};
+
+unsigned char demand_active[] = {
+	0x24, 0x01, 0x11, 0x00, 0xea, 0x03, 0xea, 0x03, 0x01, 0x00, 0x04, 0x00, 0x0e, 0x01, 0x52, 0x44,
+	0x50, 0x00, 0x09, 0x00, 0x00, 0x00, 0x09, 0x00, 0x08, 0x00, 0xea, 0x03, 0x40, 0xe4, 0x01, 0x00,
+	0x18, 0x00, 0x01, 0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x11, 0x04, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x0e, 0x00, 0x04, 0x00, 0x02, 0x00, 0x1c, 0x00, 0x08, 0x00,
+	0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x20, 0x03, 0x58, 0x02, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00,
+	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x42, 0x0f, 0x00, 0x01, 0x00,
+	0x14, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x22, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00,
+	0x00, 0x00, 0x01, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0xa1, 0x06, 0x00, 0x00, 0x40, 0x42,
+	0x0f, 0x00, 0x40, 0x42, 0x0f, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00,
+	0x08, 0x00, 0x06, 0x00, 0x00, 0x00, 0x12, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x00,
+	0x0a, 0x00, 0x01, 0x00, 0x19, 0x00, 0x19, 0x00, 0x0d, 0x00, 0x58, 0x00, 0x35, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xed, 0xbf, 0xa5, 0xcd, 0xb1, 0xae, 0xbe,
+	0x88, 0x35, 0x56, 0xe5, 0xc2, 0x01, 0xaf, 0xbe, 0xc8, 0xed, 0xbf, 0xa5, 0x8c, 0x33, 0x40, 0xe4,
+	0x08, 0x30, 0x40, 0xe4, 0x01, 0x00, 0x00, 0x00, 0x08, 0x30, 0x40, 0xe4, 0x00, 0x00, 0x00, 0x00,
+	0xc0, 0xed, 0xbf, 0xa5, 0x34, 0xf5, 0xae, 0xbe, 0x08, 0x30, 0x40, 0xe4, 0xb4, 0xed, 0xbf, 0xa5,
+	0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x0a, 0x00, 0x01, 0x00, 0x19, 0x00, 0x19, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00
 };
 
+#define EXPECT8(value) { in_uint8(s, unknown); if (unknown != (value)) printf("Unknown value on code line %u; expected 0x%x, got 0x%x\n", __LINE__, (value), unknown); }
+#define EXPECT16(value) { in_uint16_le(s, unknown); if (unknown != (value)) printf("Unknown value on code line %u; expected 0x%x, got 0x%x\n", __LINE__, (value), unknown); }
+#define EXPECT32(value) { in_uint32_le(s, unknown); if (unknown != (value)) printf("Unknown value on code line %u; expected 0x%x, got 0x%x\n", __LINE__, (value), unknown); }
+
+void
+process_presented_license(STREAM s)
+{
+	unsigned char client_license_random[SEC_RANDOM_SIZE];
+	unsigned char client_license_rsa_data[SEC_MODULUS_SIZE];
+
+	uint16 length, license_size;
+	uint32 unknown;
+	uint8 *license, hwid[LICENCE_HWID_SIZE], signature[LICENCE_SIGNATURE_SIZE];
+	int i;
+	
+	EXPECT8(2);                   // version
+	in_uint16_le(s, length);
+
+	EXPECT32(1);                  // unknown
+	EXPECT16(0);
+	EXPECT16(0x0201);
+
+	in_uint8a(s, client_license_random, SEC_RANDOM_SIZE);
+	EXPECT16(0);
+	EXPECT16(SEC_MODULUS_SIZE + SEC_PADDING_SIZE);
+	in_uint8a(s, client_license_rsa_data, SEC_MODULUS_SIZE);
+	in_uint8s(s, SEC_PADDING_SIZE);
+
+	EXPECT16(1);
+	in_uint16_le(s, license_size);
+
+	license = (uint8 *)xmalloc(license_size);
+	in_uint8a(s, license, license_size);
+
+	printf("Received license:\n");
+	for (i = 0; i < license_size; ++i)
+		printf(" 0x%02x", license[i]);
+	printf("\n");
+
+	EXPECT16(1);
+	EXPECT16(LICENCE_HWID_SIZE);
+	in_uint8a(s, hwid, LICENCE_HWID_SIZE);
+
+	printf("License hardware ID:\n");
+	for (i = 0; i < LICENCE_HWID_SIZE; ++i)
+		printf(" 0x%02x", hwid[i]);
+	printf("\n");
+
+	in_uint8a(s, signature, LICENCE_SIGNATURE_SIZE);
+
+	if (!s_check_end(s)) {
+		printf("Unknown data at the end of presented license!");
+	}
+
+	// now we can generate the keys we need
+	licence_generate_keys(client_license_random, demand_license + 4, client_license_rsa_data);
+//	send_authreq();
+}
+
 /* Receive secure transport packet */
 STREAM
 sec_recv(void)
@@ -750,7 +842,7 @@ sec_recv(void)
 	uint16 channel;
 	STREAM s;
 
-	while ((s = mcs_recv(&channel)) != NULL)
+	if ((s = mcs_recv(&channel)) != NULL)
 	{
 		if (/*g_encryption || !g_licence_issued*/ 1)
 		{
@@ -766,9 +858,32 @@ sec_recv(void)
 
 			if (sec_flags & SEC_LICENCE_NEG)
 			{
-				printf("SEC_LICENSE_NEG unknown\n");
-				//licence_process(s);
-				continue;
+				uint8 tag;
+				in_uint8(s, tag);
+				printf("SEC_LICENSE_NEG tag %x\n", tag);
+				
+				if (tag == LICENCE_TAG_PRESENT) {
+					process_presented_license(s);
+
+					{
+						STREAM s;
+						s = sec_init(SEC_LICENCE_NEG, sizeof(result_license));
+						out_uint8p(s, result_license, sizeof(result_license));
+						s_mark_end(s);
+						sec_send(s, SEC_LICENCE_NEG);
+					}
+					
+					{
+						STREAM s;
+						printf("Sending DEMAND_ACTIVE (0x%x bytes)\n", sizeof(demand_active));
+						s = sec_init(SEC_ENCRYPT, sizeof(demand_active));
+						out_uint8p(s, demand_active, sizeof(demand_active));
+						s_mark_end(s);
+						sec_send(s, SEC_ENCRYPT);
+					}
+				}
+				
+				return NULL;
 			}
 
 			if (sec_flags & SEC_LOGON_INFO) 
@@ -780,13 +895,13 @@ sec_recv(void)
 				{
 					STREAM s;
 
-					s = sec_init(sizeof(demand_license), SEC_LICENCE_NEG);
+					s = sec_init(SEC_LICENCE_NEG, sizeof(demand_license));
 					out_uint8p(s, demand_license, sizeof(demand_license));
 					s_mark_end(s);
 					sec_send(s, SEC_LICENCE_NEG);
 				}
 				
-				continue;
+				return NULL;
 			}
 
 			if (sec_flags & SEC_CLIENT_RANDOM) {
@@ -819,7 +934,7 @@ sec_recv(void)
 
 				// now we can generate the keys
 				sec_generate_keys(inr + SEC_RANDOM_SIZE, cacert, 1);
-				continue;
+				return NULL;
 			}
 		}
 
@@ -827,7 +942,7 @@ sec_recv(void)
 		if (channel != MCS_GLOBAL_CHANNEL)
 		{
 			channel_process(s, channel);
-			continue;
+			return NULL;
 		}
 
 		return s;