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proxmark3/armsrc/Standalone/hf_aveful.c

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//-----------------------------------------------------------------------------
// A. Ozkal, 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.
//-----------------------------------------------------------------------------
// main code for HF Mifare Ultralight read/simulation by Ave Ozkal
//-----------------------------------------------------------------------------
// Several parts of this code is based on code by Craig Young from HF_YOUNG
// This code does not:
// - Account for cards with non-default keys on authentication (MFU EV1 etc)
// This code is designed to work with:
// - MIFARE Ultralight
// - MIFARE Ultralight EV1 (default keys)
// - MIFARE Ultralight Nano (untested, but should work)
// - Infineon My-d Move (without password set)
// - Infineon My-d Move Lean
// - Any other Ultralight clones that have no auth and MAX_DEFAULT_BLOCKS (16) blocks
#include "standalone.h" // standalone definitions
#include "proxmark3_arm.h"
#include "appmain.h"
#include "fpgaloader.h"
#include "util.h"
#include "dbprint.h"
#include "ticks.h" // SpinDelay
#include "protocols.h" // MIFARE_ULEV1_VERSION, MIFARE_ULEV1_READSIG, MIFARE_ULEV1_READ_CNT, MIFARE_ULEV1_CHECKTEAR
#include <string.h> // memcmp
#include "mifareutil.h"
#include "iso14443a.h"
#define SAK 0x00
#define ATQA0 0x44
#define ATQA1 0x00
#define STATE_SEARCH 0
#define STATE_READ 1
#define STATE_EMUL 2
// Taken from cmdhfmfu.c, increased by 01h to be 1 indexed
#define MAX_UL_BLOCKS 0x10
#define MAX_UL_NANO_40 0x0B
#define MAX_ULEV1a_BLOCKS 0x14
#define MAX_ULEV1b_BLOCKS 0x29
#define MAX_MY_D_MOVE 0x26
#define MAX_MY_D_MOVE_LEAN 0x10
#define MAX_DEFAULT_BLOCKS 0x10
typedef struct {
uint8_t uid[10];
uint8_t uidlen;
uint8_t atqa[2];
uint8_t sak;
} PACKED card_clone_t;
int get_block_count(iso14a_card_select_t card, uint8_t version[], uint16_t version_len);
uint16_t get_ev1_version(iso14a_card_select_t card, uint8_t *version);
uint16_t get_ev1_signature(iso14a_card_select_t card, uint8_t *signature);
uint16_t get_ev1_counter(iso14a_card_select_t card, uint8_t counter, uint8_t *response);
uint16_t get_ev1_tearing(iso14a_card_select_t card, uint8_t counter, uint8_t *response);
uint16_t get_ev1_version(iso14a_card_select_t card, uint8_t *version) {
return mifare_sendcmd(MIFARE_ULEV1_VERSION, NULL, 0, version, NULL, NULL);
}
uint16_t get_ev1_signature(iso14a_card_select_t card, uint8_t *response) {
uint8_t cmd[4] = {MIFARE_ULEV1_READSIG, 0x00, 0x00, 0x00};
AddCrc14A(cmd, 2);
ReaderTransmit(cmd, sizeof(cmd), NULL);
return ReaderReceive(response, NULL);
}
uint16_t get_ev1_counter(iso14a_card_select_t card, uint8_t counter, uint8_t *response) {
uint8_t cmd[4] = {MIFARE_ULEV1_READ_CNT, counter, 0x00, 0x00};
AddCrc14A(cmd, 2);
ReaderTransmit(cmd, sizeof(cmd), NULL);
return ReaderReceive(response, NULL);
}
uint16_t get_ev1_tearing(iso14a_card_select_t card, uint8_t counter, uint8_t *response) {
uint8_t cmd[4] = {MIFARE_ULEV1_CHECKTEAR, counter, 0x00, 0x00};
AddCrc14A(cmd, 2);
ReaderTransmit(cmd, sizeof(cmd), NULL);
return ReaderReceive(response, NULL);
}
int get_block_count(iso14a_card_select_t card, uint8_t version[], uint16_t version_len) {
// Default to MAX_DEFAULT_BLOCKS blocks
int block_count = MAX_DEFAULT_BLOCKS;
// Most of this code is from cmdhfmfu.c
// Infineon manufacturer ID
if (card.uid[0] == 0x05) {
// Infinition MY-D tests Exam high nibble
uint8_t nib = (card.uid[1] & 0xf0) >> 4;
switch (nib) {
case 3:
block_count = MAX_MY_D_MOVE;
break; // or SLE 66R01P // 38 pages of 4 bytes
case 7:
block_count = MAX_MY_D_MOVE_LEAN;
break; // or SLE 66R01L // 16 pages of 4 bytes
}
} else {
// Moved this from case to if as I only care about non-ultralight ev0.
if (version_len == 0x0A) {
if (memcmp(version, "\x00\x04\x03\x01\x01\x00\x0B", 7) == 0) { block_count = MAX_ULEV1a_BLOCKS; }
else if (memcmp(version, "\x00\x04\x03\x01\x02\x00\x0B", 7) == 0) { block_count = MAX_UL_NANO_40; }
else if (memcmp(version, "\x00\x04\x03\x02\x01\x00\x0B", 7) == 0) { block_count = MAX_ULEV1a_BLOCKS; }
else if (memcmp(version, "\x00\x04\x03\x01\x01\x00\x0E", 7) == 0) { block_count = MAX_ULEV1b_BLOCKS; }
else if (memcmp(version, "\x00\x04\x03\x02\x01\x00\x0E", 7) == 0) { block_count = MAX_ULEV1b_BLOCKS; }
else if (memcmp(version, "\x00\x34\x21\x01\x01\x00\x0E", 7) == 0) { block_count = MAX_ULEV1b_BLOCKS; } // Mikron JSC Russia EV1 41 pages tag
else if (memcmp(version, "\x00\x34\x21\x01\x01\x00\x0E", 7) == 0) { block_count = MAX_UL_BLOCKS; }
else if (version[2] == 0x03) { block_count = MAX_ULEV1a_BLOCKS; }
}
}
return block_count;
}
void ModInfo(void) {
DbpString(" HF Mifare Ultralight read/simulation by Ave Ozkal");
}
void RunMod(void) {
StandAloneMode();
Dbprintf("AveFUL (MF Ultralight read/emul) started");
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
// the main loop for your standalone mode
for (;;) {
WDT_HIT();
// exit from RunMod, send a usbcommand.
if (data_available()) break;
iso14a_card_select_t card;
SpinDelay(500);
iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
// 0 = search, 1 = read, 2 = emul
int state = STATE_SEARCH;
DbpString("Scanning...");
int button_pressed = BUTTON_NO_CLICK;
for (;;) {
// Was our button held down or pressed?
button_pressed = BUTTON_HELD(1000);
if (button_pressed != BUTTON_NO_CLICK || data_available())
break;
else if (state == STATE_SEARCH) {
if (!iso14443a_select_card(NULL, &card, NULL, true, 0, true)) {
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LED_D_OFF();
SpinDelay(500);
continue;
} else {
if (card.sak == SAK && card.atqa[0] == ATQA0 && card.atqa[1] == ATQA1 && card.uidlen == 7) {
DbpString("Found ultralight with UID: ");
Dbhexdump(card.uidlen, card.uid, 0);
state = STATE_READ;
} else {
DbpString("Found non-ultralight card, ignoring.");
}
}
} else if (state == STATE_READ) {
iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
bool read_successful = true;
// Get version and re-select card as UL EV0s like to shut off after a 0x60
uint8_t version[10] = {0x00};
uint16_t version_len = 0;
version_len = get_ev1_version(card, version);
iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
int block_count = get_block_count(card, version, version_len);
Dbprintf("Card was determined as having %d blocks.", block_count);
Dbprintf("Contents:");
for (int i = 0; i < block_count; i++) {
uint8_t dataout[16] = {0x00};
if (mifare_ultra_readblock(i, dataout)) {
// If there's an error reading, go back to search state
read_successful = false;
break;
}
// We're skipping 14 blocks (56 bytes) here, as that "[...] has version/signature/counter data here" according to comments on hf_mfu_dumptoemulator
// When converting a bin, it's almost all 0 other than one 0x0F byte, and functionality seems to be unaffected if that byte is set to 0x00.
emlSetMem_xt(dataout, 14 + i, 1, 4);
Dbhexdump(4, dataout, 0);
}
// It's not the best way to determine this,
// but with what I'm trying to support It Should Be Okay
bool is_ev1 = (version_len != 0) && (block_count != 16);
if (read_successful) {
uint8_t signature[34] = {0x00};
if (is_ev1) {
get_ev1_signature(card, signature);
}
Dbprintf("Preparing emulator memory with:");
// Fill first 14 blocks with 0x00 (see comment above)
for (int i = 0; i < 14; i++) {
uint8_t dataout[4] = {0x00, 0x00, 0x00, 0x00};
if (is_ev1 && (i == 0 || i == 1)) {
// On block 0 and 1, set version on EV1
memcpy(dataout, version + (i * 4), 4);
} else if (i == 2) {
// On block 2, set last byte to the card's block count
dataout[3] = block_count;
} else if (is_ev1 && ((i > 2 && i < 11))) {
// On 3-10 add signature on EV1
memcpy(dataout, signature + ((i - 3) * 4), 4);
} else if (is_ev1 && (i > 10)) {
// On 11-14 read and set counter and tearing on EV1
uint8_t counter[5];
uint8_t tearing[3];
get_ev1_counter(card, i - 11, counter);
get_ev1_tearing(card, i - 11, tearing);
memcpy(dataout, counter, 3);
memcpy(dataout + 3, tearing, 1);
}
Dbhexdump(4, dataout, 0);
emlSetMem_xt(dataout, i, 1, 4);
}
Dbprintf("Successfully loaded into emulator memory...");
state = STATE_EMUL;
} else {
Dbprintf("Read failure, going back to search state.");
state = STATE_SEARCH;
}
} else if (state == STATE_EMUL) {
uint8_t flags = FLAG_7B_UID_IN_DATA;
Dbprintf("Starting simulation, press pm3-button to stop and go back to search state.");
SimulateIso14443aTag(7, flags, card.uid, 0);
// Go back to search state if user presses pm3-button
state = STATE_SEARCH;
}
}
if (button_pressed == BUTTON_HOLD) //Holding down the button
break;
}
DbpString("exiting");
LEDsoff();
}
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