// different initial value (CRC_ICLASS)
#include "iso14443crc.h"
#include "iso15693tools.h"
-
+#include "cipher.h"
+#include "protocols.h"
static int timeout = 4096;
// Convert from last byte pos to length
ToSendMax++;
}
+#define MODE_SIM_CSN 0
+#define MODE_EXIT_AFTER_MAC 1
+#define MODE_FULLSIM 2
-int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader_mac_buf);
+int doIClassSimulation(int simulationMode, uint8_t *reader_mac_buf);
/**
* @brief SimulateIClass simulates an iClass card.
* @param arg0 type of simulation
// Enable and clear the trace
set_tracing(TRUE);
clear_trace();
+ //Use the emulator memory for SIM
+ uint8_t *emulator = BigBuf_get_EM_addr();
- uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };
if(simType == 0) {
// Use the CSN from commandline
- memcpy(csn_crc, datain, 8);
- doIClassSimulation(csn_crc,0,NULL);
+ memcpy(emulator, datain, 8);
+ doIClassSimulation(MODE_SIM_CSN,NULL);
}else if(simType == 1)
{
- doIClassSimulation(csn_crc,0,NULL);
+ //Default CSN
+ uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };
+ // Use the CSN from commandline
+ memcpy(emulator, csn_crc, 8);
+ doIClassSimulation(MODE_SIM_CSN,NULL);
}
else if(simType == 2)
{
{
// The usb data is 512 bytes, fitting 65 8-byte CSNs in there.
- memcpy(csn_crc, datain+(i*8), 8);
- if(doIClassSimulation(csn_crc,1,mac_responses+i*8))
+ memcpy(emulator, datain+(i*8), 8);
+ if(doIClassSimulation(MODE_EXIT_AFTER_MAC,mac_responses+i*8))
{
cmd_send(CMD_ACK,CMD_SIMULATE_TAG_ICLASS,i,0,mac_responses,i*8);
return; // Button pressed
}
cmd_send(CMD_ACK,CMD_SIMULATE_TAG_ICLASS,i,0,mac_responses,i*8);
+ }else if(simType == 3){
+ //This is 'full sim' mode, where we use the emulator storage for data.
+ doIClassSimulation(MODE_FULLSIM, NULL);
}
else{
// We may want a mode here where we hardcode the csns to use (from proxclone).
Dbprintf("Done...");
}
+
/**
* @brief Does the actual simulation
* @param csn - csn to use
* @param breakAfterMacReceived if true, returns after reader MAC has been received.
*/
-int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader_mac_buf)
+int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf)
{
+ // free eventually allocated BigBuf memory
+ BigBuf_free_keep_EM();
+ uint8_t *csn = BigBuf_get_EM_addr();
+ uint8_t *emulator = csn;
+ uint8_t sof_data[] = { 0x0F} ;
// CSN followed by two CRC bytes
- uint8_t response1[] = { 0x0F} ;
- uint8_t response2[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- uint8_t response3[] = { 0,0,0,0,0,0,0,0,0,0};
- memcpy(response3,csn,sizeof(response3));
+ uint8_t anticoll_data[10] = { 0 };
+ uint8_t csn_data[10] = { 0 };
+ memcpy(csn_data,csn,sizeof(csn_data));
Dbprintf("Simulating CSN %02x%02x%02x%02x%02x%02x%02x%02x",csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);
- // e-Purse
- uint8_t response4[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
// Construct anticollision-CSN
- rotateCSN(response3,response2);
+ rotateCSN(csn_data,anticoll_data);
// Compute CRC on both CSNs
- ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);
- ComputeCrc14443(CRC_ICLASS, response3, 8, &response3[8], &response3[9]);
+ ComputeCrc14443(CRC_ICLASS, anticoll_data, 8, &anticoll_data[8], &anticoll_data[9]);
+ ComputeCrc14443(CRC_ICLASS, csn_data, 8, &csn_data[8], &csn_data[9]);
+
+ // e-Purse
+ uint8_t card_challenge_data[8] = { 0x00 };
+ if(simulationMode == MODE_FULLSIM)
+ {
+ //Card challenge, a.k.a e-purse is on block 2
+ memcpy(card_challenge_data,emulator + (8 * 2) , 8);
+ }
int exitLoop = 0;
// Reader 0a
int modulated_response_size;
uint8_t* trace_data = NULL;
int trace_data_size = 0;
- //uint8_t sof = 0x0f;
- // free eventually allocated BigBuf memory
- BigBuf_free();
+
// Respond SOF -- takes 1 bytes
- uint8_t *resp1 = BigBuf_malloc(2);
- int resp1Len;
+ uint8_t *resp_sof = BigBuf_malloc(2);
+ int resp_sof_Len;
// Anticollision CSN (rotated CSN)
// 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte)
- uint8_t *resp2 = BigBuf_malloc(28);
- int resp2Len;
+ uint8_t *resp_anticoll = BigBuf_malloc(28);
+ int resp_anticoll_len;
// CSN
// 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte)
- uint8_t *resp3 = BigBuf_malloc(30);
- int resp3Len;
+ uint8_t *resp_csn = BigBuf_malloc(30);
+ int resp_csn_len;
// e-Purse
// 18: Takes 2 bytes for SOF/EOF and 8 * 2 = 16 bytes (2 bytes/bit)
- uint8_t *resp4 = BigBuf_malloc(20);
- int resp4Len;
+ uint8_t *resp_cc = BigBuf_malloc(20);
+ int resp_cc_len;
uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
memset(receivedCmd, 0x44, MAX_FRAME_SIZE);
// First card answer: SOF
CodeIClassTagSOF();
- memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax;
+ memcpy(resp_sof, ToSend, ToSendMax); resp_sof_Len = ToSendMax;
// Anticollision CSN
- CodeIClassTagAnswer(response2, sizeof(response2));
- memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax;
+ CodeIClassTagAnswer(anticoll_data, sizeof(anticoll_data));
+ memcpy(resp_anticoll, ToSend, ToSendMax); resp_anticoll_len = ToSendMax;
// CSN
- CodeIClassTagAnswer(response3, sizeof(response3));
- memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax;
+ CodeIClassTagAnswer(csn_data, sizeof(csn_data));
+ memcpy(resp_csn, ToSend, ToSendMax); resp_csn_len = ToSendMax;
// e-Purse
- CodeIClassTagAnswer(response4, sizeof(response4));
- memcpy(resp4, ToSend, ToSendMax); resp4Len = ToSendMax;
+ CodeIClassTagAnswer(card_challenge_data, sizeof(card_challenge_data));
+ memcpy(resp_cc, ToSend, ToSendMax); resp_cc_len = ToSendMax;
+ //This is used for responding to READ-block commands
+ uint8_t *data_response = BigBuf_malloc(8 * 2 + 2);
// Start from off (no field generated)
//FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LED_C_ON();
// Okay, look at the command now.
- if(receivedCmd[0] == 0x0a ) {
+ if(receivedCmd[0] == ICLASS_CMD_ACTALL ) {
// Reader in anticollission phase
- modulated_response = resp1; modulated_response_size = resp1Len; //order = 1;
- trace_data = response1;
- trace_data_size = sizeof(response1);
- } else if(receivedCmd[0] == 0x0c) {
+ modulated_response = resp_sof; modulated_response_size = resp_sof_Len; //order = 1;
+ trace_data = sof_data;
+ trace_data_size = sizeof(sof_data);
+ } else if(receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) {
// Reader asks for anticollission CSN
- modulated_response = resp2; modulated_response_size = resp2Len; //order = 2;
- trace_data = response2;
- trace_data_size = sizeof(response2);
+ modulated_response = resp_anticoll; modulated_response_size = resp_anticoll_len; //order = 2;
+ trace_data = anticoll_data;
+ trace_data_size = sizeof(anticoll_data);
//DbpString("Reader requests anticollission CSN:");
- } else if(receivedCmd[0] == 0x81) {
+ } else if(receivedCmd[0] == ICLASS_CMD_SELECT) {
// Reader selects anticollission CSN.
// Tag sends the corresponding real CSN
- modulated_response = resp3; modulated_response_size = resp3Len; //order = 3;
- trace_data = response3;
- trace_data_size = sizeof(response3);
+ modulated_response = resp_csn; modulated_response_size = resp_csn_len; //order = 3;
+ trace_data = csn_data;
+ trace_data_size = sizeof(csn_data);
//DbpString("Reader selects anticollission CSN:");
- } else if(receivedCmd[0] == 0x88) {
+ } else if(receivedCmd[0] == ICLASS_CMD_READCHECK_KD) {
// Read e-purse (88 02)
- modulated_response = resp4; modulated_response_size = resp4Len; //order = 4;
- trace_data = response4;
- trace_data_size = sizeof(response4);
+ modulated_response = resp_cc; modulated_response_size = resp_cc_len; //order = 4;
+ trace_data = card_challenge_data;
+ trace_data_size = sizeof(card_challenge_data);
LED_B_ON();
- } else if(receivedCmd[0] == 0x05) {
+ } else if(receivedCmd[0] == ICLASS_CMD_CHECK) {
// Reader random and reader MAC!!!
- // Do not respond
- // We do not know what to answer, so lets keep quiet
- modulated_response = resp1; modulated_response_size = 0; //order = 5;
- trace_data = NULL;
- trace_data_size = 0;
- if (breakAfterMacReceived){
- // dbprintf:ing ...
- Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x"
- ,csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);
- Dbprintf("RDR: (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",len,
- receivedCmd[0], receivedCmd[1], receivedCmd[2],
- receivedCmd[3], receivedCmd[4], receivedCmd[5],
- receivedCmd[6], receivedCmd[7], receivedCmd[8]);
- if (reader_mac_buf != NULL)
- {
- memcpy(reader_mac_buf,receivedCmd+1,8);
+ if(simulationMode == MODE_FULLSIM)
+ { //This is what we must do..
+ //Reader just sent us NR and MAC(k,cc * nr)
+ //The diversified key should be stored on block 3
+ //However, from a typical dump, the key will not be there
+ uint8_t *diversified_key = { 0 };
+ //Get the diversified key from emulator memory
+ memcpy(diversified_key, emulator+(8*3),8);
+ uint8_t ccnr[12] = { 0 };
+ //Put our cc there (block 2)
+ memcpy(ccnr, emulator + (8 * 2), 8);
+ //Put nr there
+ memcpy(ccnr+8, receivedCmd+1,4);
+ //Now, calc MAC
+ doMAC(ccnr,diversified_key, trace_data);
+ trace_data_size = 4;
+ CodeIClassTagAnswer(trace_data , trace_data_size);
+ memcpy(data_response, ToSend, ToSendMax);
+ modulated_response = data_response;
+ modulated_response_size = ToSendMax;
+ }else
+ { //Not fullsim, we don't respond
+ // We do not know what to answer, so lets keep quiet
+ modulated_response = resp_sof; modulated_response_size = 0;
+ trace_data = NULL;
+ trace_data_size = 0;
+ if (simulationMode == MODE_EXIT_AFTER_MAC){
+ // dbprintf:ing ...
+ Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x"
+ ,csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);
+ Dbprintf("RDR: (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",len,
+ receivedCmd[0], receivedCmd[1], receivedCmd[2],
+ receivedCmd[3], receivedCmd[4], receivedCmd[5],
+ receivedCmd[6], receivedCmd[7], receivedCmd[8]);
+ if (reader_mac_buf != NULL)
+ {
+ memcpy(reader_mac_buf,receivedCmd+1,8);
+ }
+ exitLoop = true;
}
- exitLoop = true;
}
- } else if(receivedCmd[0] == 0x00 && len == 1) {
+
+ } else if(receivedCmd[0] == ICLASS_CMD_HALT && len == 1) {
// Reader ends the session
- modulated_response = resp1; modulated_response_size = 0; //order = 0;
+ modulated_response = resp_sof; modulated_response_size = 0; //order = 0;
trace_data = NULL;
trace_data_size = 0;
- } else {
+ } else if(simulationMode == MODE_FULLSIM && receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4){
+ //Read block
+ uint16_t blk = receivedCmd[1];
+ trace_data = emulator+(blk << 3);
+ trace_data_size = 8;
+ CodeIClassTagAnswer(trace_data , trace_data_size);
+ memcpy(data_response, ToSend, ToSendMax);
+ modulated_response = data_response;
+ modulated_response_size = ToSendMax;
+ }
+ else {
//#db# Unknown command received from reader (len=5): 26 1 0 f6 a 44 44 44 44
// Never seen this command before
Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
receivedCmd[3], receivedCmd[4], receivedCmd[5],
receivedCmd[6], receivedCmd[7], receivedCmd[8]);
// Do not respond
- modulated_response = resp1; modulated_response_size = 0; //order = 0;
+ modulated_response = resp_sof; modulated_response_size = 0; //order = 0;
trace_data = NULL;
trace_data_size = 0;
}
if(read_status == 1) datasize = 8;
if(read_status == 2) datasize = 16;
+ //Todo, read the public blocks 1,5 aswell:
+ //
+ // 0 : CSN (we already have)
+ // 1 : Configuration
+ // 2 : e-purse (we already have)
+ // (3,4 write-only)
+ // 5 Application issuer area
+ //
+ //Then we can 'ship' back the 8 * 5 bytes of data,
+ // with 0xFF:s in block 3 and 4.
+
LED_B_ON();
//Send back to client, but don't bother if we already sent this
if(memcmp(last_csn, card_data, 8) != 0)
projects / proxmark3-svn / blobdiff