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a1852eaa4b
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281 lines
12 KiB
C
281 lines
12 KiB
C
//-----------------------------------------------------------------------------
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// Craig Young, 2014
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// Christian Herrmann, 2017
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// main code for HF standalone mode Mifare /sniff/emulation by Craig Young
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//-----------------------------------------------------------------------------
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#include "standalone.h" // standalone definitions
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#include <inttypes.h>
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#include "proxmark3_arm.h"
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#include "appmain.h"
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#include "fpgaloader.h"
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#include "util.h"
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#include "dbprint.h"
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#include "ticks.h"
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#include "string.h"
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#include "commonutil.h"
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#include "mifarecmd.h"
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#include "iso14443a.h"
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#include "protocols.h"
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#define OPTS 2
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typedef struct {
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uint8_t uid[10];
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uint8_t uidlen;
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uint8_t atqa[2];
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uint8_t sak;
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} PACKED card_clone_t;
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void ModInfo(void) {
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DbpString(" HF Mifare sniff/simulation - (Craig Young)");
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}
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void RunMod() {
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StandAloneMode();
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Dbprintf(">> Craig Young Mifare sniff UID/clone uid 2 magic/sim a.k.a YoungRun Started <<");
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FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
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int selected = 0, playing = 0, iGotoRecord = 0, iGotoClone = 0;
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int cardRead[OPTS] = {0};
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card_clone_t uids[OPTS];
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iso14a_card_select_t card[OPTS];
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uint8_t params = (MAGIC_SINGLE | MAGIC_DATAIN);
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LED(selected + 1, 0);
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for (;;) {
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WDT_HIT();
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// exit from Standalone Mode, send a usbcommand.
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if (data_available()) return;
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SpinDelay(300);
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if (iGotoRecord == 1 || cardRead[selected] == 0) {
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iGotoRecord = 0;
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LEDsoff();
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LED(selected + 1, 0);
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LED(LED_D, 0);
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// record
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Dbprintf("Enabling iso14443a reader mode for [Bank: %d]...", selected);
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/* need this delay to prevent catching some weird data */
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SpinDelay(500);
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iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
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for (;;) {
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// exit from Standalone Mode, send a usbcommand.
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if (data_available()) return;
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if (BUTTON_PRESS()) {
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if (cardRead[selected]) {
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Dbprintf("Button press detected -- replaying card in bank[%d]", selected);
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break;
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} else if (cardRead[(selected + 1) % OPTS]) {
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Dbprintf("Button press detected but no card in bank[%d] so playing from bank[%d]", selected, (selected + 1) % OPTS);
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selected = (selected + 1) % OPTS;
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break; // playing = 1;
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} else {
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Dbprintf("Button press detected but no stored tag to play. (Ignoring button)");
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SpinDelay(300);
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}
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}
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if (!iso14443a_select_card(NULL, &card[selected], NULL, true, 0, true)) {
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continue;
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} else {
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Dbprintf("Read UID:");
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Dbhexdump(card[selected].uidlen, card[selected].uid, 0);
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if (memcmp(uids[(selected + 1) % OPTS].uid, card[selected].uid, card[selected].uidlen) == 0) {
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Dbprintf("Card selected has same UID as what is stored in the other bank. Skipping.");
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} else {
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uids[selected].sak = card[selected].sak;
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uids[selected].uidlen = card[selected].uidlen;
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memcpy(uids[selected].uid, card[selected].uid, uids[selected].uidlen);
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memcpy(uids[selected].atqa, card[selected].atqa, 2);
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if (uids[selected].uidlen > 4)
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Dbprintf("Bank[%d] received a 7-byte UID", selected);
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else
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Dbprintf("Bank[%d] received a 4-byte UID", selected);
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break;
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}
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}
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}
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Dbprintf("ATQA = %02X%02X", uids[selected].atqa[0], uids[selected].atqa[1]);
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Dbprintf("SAK = %02X", uids[selected].sak);
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LEDsoff();
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LED(LED_B, 200);
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LED(LED_A, 200);
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LED(LED_B, 200);
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LED(LED_A, 200);
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LEDsoff();
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LED(selected + 1, 0);
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// Next state is replay:
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playing = 1;
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cardRead[selected] = 1;
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}
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/* MF Classic UID clone */
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else if (iGotoClone == 1) {
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iGotoClone = 0;
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LEDsoff();
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LED(selected + 1, 0);
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LED(LED_A, 250);
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// magiccards holds 4bytes uid. *usually*
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uint32_t tmpuid = bytes_to_num(uids[selected].uid, 4);
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// record
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Dbprintf("Preparing to Clone card [Bank: %d]; uid: %08x", selected, tmpuid);
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// wait for button to be released
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// Delay cloning until card is in place
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while (BUTTON_PRESS())
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WDT_HIT();
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Dbprintf("Starting clone. [Bank: %d]", selected);
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// need this delay to prevent catching some weird data
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SpinDelay(500);
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// Begin clone function here:
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/* Example from client/mifarehost.c for commanding a block write for "magic Chinese" cards:
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SendCommandOLD(CMD_HF_MIFARE_CSETBL, params & (0xFE | (uid == NULL ? 0:1)), blockNo, 0, data, 16);
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Block read is similar:
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SendCommandOLD(CMD_HF_MIFARE_CGETBL, params, blockNo, 0,...};
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We need to imitate that call with blockNo 0 to set a uid.
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The get and set commands are handled in this file:
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// Work with "magic Chinese" card
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case CMD_HF_MIFARE_CSETBL:
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MifareCSetBlock(c->arg[0], c->arg[1], c->d.asBytes);
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break;
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case CMD_HF_MIFARE_CGETBL:
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MifareCGetBlock(c->arg[0], c->arg[1], c->d.asBytes);
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break;
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mfCSetUID provides example logic for UID set workflow:
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-Read block0 from card in field with MifareCGetBlock()
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-Configure new values without replacing reserved bytes
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memcpy(block0, uid, 4); // Copy UID bytes from byte array
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// Mifare UID BCC
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block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // BCC on byte 5
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Bytes 5-7 are reserved SAK and ATQA for mifare classic
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-Use mfCSetBlock(0, block0, oldUID, wantWipe, MAGIC_SINGLE) to write it
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*/
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uint8_t oldBlock0[16] = {0}, newBlock0[16] = {0};
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// arg0 = Flags, arg1=blockNo
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MifareCGetBlock(params, 0, oldBlock0);
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if (oldBlock0[0] == 0 && oldBlock0[0] == oldBlock0[1] && oldBlock0[1] == oldBlock0[2] && oldBlock0[2] == oldBlock0[3]) {
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Dbprintf("No changeable tag detected. Returning to replay mode for bank[%d]", selected);
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playing = 1;
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} else {
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uint8_t testBlock0[16] = {0};
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Dbprintf("UID from target tag: %02X%02X%02X%02X", oldBlock0[0], oldBlock0[1], oldBlock0[2], oldBlock0[3]);
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memcpy(newBlock0 + 5, oldBlock0 + 5, 11);
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// Copy uid for bank (2nd is for longer UIDs not supported if classic)
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memcpy(newBlock0, uids[selected].uid, 4);
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newBlock0[4] = newBlock0[0] ^ newBlock0[1] ^ newBlock0[2] ^ newBlock0[3];
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// arg0 = workFlags, arg1 = blockNo, datain
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MifareCSetBlock(params, 0, newBlock0);
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MifareCGetBlock(params, 0, testBlock0);
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if (memcmp(testBlock0, newBlock0, 16) == 0) {
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DbpString("Cloned successful!");
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cardRead[selected] = 0; // Only if the card was cloned successfully should we clear it
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playing = 0;
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iGotoRecord = 1;
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selected = (selected + 1) % OPTS;
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} else {
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Dbprintf("Clone failed. Back to replay mode on bank[%d]", selected);
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playing = 1;
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}
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}
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LEDsoff();
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LED(selected + 1, 0);
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}
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// Change where to record (or begin playing)
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// button_pressed == BUTTON_SINGLE_CLICK && cardRead[selected])
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else if (playing == 1) {
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LEDsoff();
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LED(selected + 1, 0);
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// Begin transmitting
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LED(LED_B, 0);
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DbpString("Playing");
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for (; ;) {
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// exit from Standalone Mode, send a usbcommand.
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if (data_available()) return;
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int button_action = BUTTON_HELD(1000);
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if (button_action == 0) { // No button action, proceed with sim
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uint8_t flags = FLAG_4B_UID_IN_DATA;
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uint8_t data[PM3_CMD_DATA_SIZE] = {0}; // in case there is a read command received we shouldn't break
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memcpy(data, uids[selected].uid, uids[selected].uidlen);
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uint64_t tmpuid = bytes_to_num(uids[selected].uid, uids[selected].uidlen);
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if (uids[selected].uidlen == 7) {
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flags = FLAG_7B_UID_IN_DATA;
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Dbprintf("Simulating ISO14443a tag with uid: %014" PRIx64 " [Bank: %d]", tmpuid, selected);
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} else {
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Dbprintf("Simulating ISO14443a tag with uid: %08" PRIx64 " [Bank: %d]", tmpuid, selected);
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}
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if (uids[selected].sak == 0x08 && uids[selected].atqa[0] == 0x04 && uids[selected].atqa[1] == 0) {
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DbpString("Mifare Classic 1k");
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SimulateIso14443aTag(1, flags, data);
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} else if (uids[selected].sak == 0x18 && uids[selected].atqa[0] == 0x02 && uids[selected].atqa[1] == 0) {
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DbpString("Mifare Classic 4k (4b uid)");
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SimulateIso14443aTag(8, flags, data);
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} else if (uids[selected].sak == 0x08 && uids[selected].atqa[0] == 0x44 && uids[selected].atqa[1] == 0) {
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DbpString("Mifare Classic 4k (7b uid)");
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SimulateIso14443aTag(8, flags, data);
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} else if (uids[selected].sak == 0x00 && uids[selected].atqa[0] == 0x44 && uids[selected].atqa[1] == 0) {
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DbpString("Mifare Ultralight");
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SimulateIso14443aTag(2, flags, data);
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} else if (uids[selected].sak == 0x20 && uids[selected].atqa[0] == 0x04 && uids[selected].atqa[1] == 0x03) {
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DbpString("Mifare DESFire");
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SimulateIso14443aTag(3, flags, data);
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} else {
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Dbprintf("Unrecognized tag type -- defaulting to Mifare Classic emulation");
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SimulateIso14443aTag(1, flags, data);
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}
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} else if (button_action == BUTTON_SINGLE_CLICK) {
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selected = (selected + 1) % OPTS;
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Dbprintf("Done playing. Switching to record mode on bank %d", selected);
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iGotoRecord = 1;
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break;
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} else if (button_action == BUTTON_HOLD) {
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Dbprintf("Playtime over. Begin cloning...");
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iGotoClone = 1;
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break;
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}
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}
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/* We pressed a button so ignore it here with a delay */
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SpinDelay(300);
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LEDsoff();
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LED(selected + 1, 0);
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}
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}
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}
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