mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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292 lines
10 KiB
C
292 lines
10 KiB
C
//-----------------------------------------------------------------------------
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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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// Low frequency Noralsy tag commands
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// ASK/Manchester, STT, RF/32, 96 bits long (some bits unknown)
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//-----------------------------------------------------------------------------
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#include "cmdlfnoralsy.h"
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "commonutil.h" // ARRAYLEN
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#include "cmdparser.h" // command_t
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#include "comms.h"
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#include "ui.h"
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#include "cmddata.h"
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#include "cmdlf.h"
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#include "protocols.h" // for T55xx config register definitions
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#include "lfdemod.h" // parityTest
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#include "cmdlft55xx.h" // verifywrite
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static int CmdHelp(const char *Cmd);
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static int usage_lf_noralsy_clone(void) {
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PrintAndLogEx(NORMAL, "clone a Noralsy tag to a T55x7 tag.");
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PrintAndLogEx(NORMAL, "Usage: lf noralsy clone [h] <card id> <year> <Q5>");
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PrintAndLogEx(NORMAL, "Options:");
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PrintAndLogEx(NORMAL, " h : This help");
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PrintAndLogEx(NORMAL, " <card id> : Noralsy card ID");
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PrintAndLogEx(NORMAL, " <year> : Tag allocation year");
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PrintAndLogEx(NORMAL, " <Q5> : specify write to Q5 (t5555 instead of t55x7)");
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PrintAndLogEx(NORMAL, "");
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PrintAndLogEx(NORMAL, "Examples:");
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PrintAndLogEx(NORMAL, " lf noralsy clone 112233");
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return PM3_SUCCESS;
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}
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static int usage_lf_noralsy_sim(void) {
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PrintAndLogEx(NORMAL, "Enables simulation of Noralsy card with specified card number.");
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PrintAndLogEx(NORMAL, "Simulation runs until the button is pressed or another USB command is issued.");
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PrintAndLogEx(NORMAL, "");
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PrintAndLogEx(NORMAL, "Usage: lf noralsy sim [h] <card id> <year>");
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PrintAndLogEx(NORMAL, "Options:");
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PrintAndLogEx(NORMAL, " h : This help");
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PrintAndLogEx(NORMAL, " <card id> : Noralsy card ID");
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PrintAndLogEx(NORMAL, " <year> : Tag allocation year");
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PrintAndLogEx(NORMAL, "");
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PrintAndLogEx(NORMAL, "Examples:");
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PrintAndLogEx(NORMAL, " lf noralsy sim 112233");
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return PM3_SUCCESS;
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}
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static uint8_t noralsy_chksum(uint8_t *bits, uint8_t len) {
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uint8_t sum = 0;
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for (uint8_t i = 0; i < len; i += 4)
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sum ^= bytebits_to_byte(bits + i, 4);
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return sum & 0x0F ;
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}
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//see ASKDemod for what args are accepted
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static int CmdNoralsyDemod(const char *Cmd) {
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(void)Cmd; // Cmd is not used so far
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//ASK / Manchester
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bool st = true;
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if (ASKDemod_ext("32 0 0", false, false, 1, &st) != PM3_SUCCESS) {
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if (g_debugMode) PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: ASK/Manchester Demod failed");
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return PM3_ESOFT;
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}
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if (!st) {
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if (g_debugMode) PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: sequence terminator not found");
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return PM3_ESOFT;
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}
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size_t size = DemodBufferLen;
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int ans = detectNoralsy(DemodBuffer, &size);
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if (ans < 0) {
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if (g_debugMode) {
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if (ans == -1)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: too few bits found");
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else if (ans == -2)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: preamble not found");
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else if (ans == -3)
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PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: Size not correct: %d", size);
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else
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PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: ans: %d", ans);
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}
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return PM3_ESOFT;
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}
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setDemodBuff(DemodBuffer, 96, ans);
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setClockGrid(g_DemodClock, g_DemodStartIdx + (ans * g_DemodClock));
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//got a good demod
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uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
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uint32_t raw2 = bytebits_to_byte(DemodBuffer + 32, 32);
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uint32_t raw3 = bytebits_to_byte(DemodBuffer + 64, 32);
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uint32_t cardid = ((raw2 & 0xFFF00000) >> 20) << 16;
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cardid |= (raw2 & 0xFF) << 8;
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cardid |= ((raw3 & 0xFF000000) >> 24);
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cardid = BCD2DEC(cardid);
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uint16_t year = (raw2 & 0x000ff000) >> 12;
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year = BCD2DEC(year);
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year += (year > 60) ? 1900 : 2000;
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// calc checksums
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uint8_t calc1 = noralsy_chksum(DemodBuffer + 32, 40);
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uint8_t calc2 = noralsy_chksum(DemodBuffer, 76);
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uint8_t chk1 = 0, chk2 = 0;
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chk1 = bytebits_to_byte(DemodBuffer + 72, 4);
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chk2 = bytebits_to_byte(DemodBuffer + 76, 4);
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// test checksums
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if (chk1 != calc1) {
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if (g_debugMode) PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: checksum 1 failed %x - %x\n", chk1, calc1);
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return PM3_ESOFT;
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}
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if (chk2 != calc2) {
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if (g_debugMode) PrintAndLogEx(DEBUG, "DEBUG: Error - Noralsy: checksum 2 failed %x - %x\n", chk2, calc2);
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return PM3_ESOFT;
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}
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PrintAndLogEx(SUCCESS, "Noralsy Tag Found: Card ID %u, Year: %u Raw: %08X%08X%08X", cardid, year, raw1, raw2, raw3);
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if (raw1 != 0xBB0214FF) {
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PrintAndLogEx(WARNING, "Unknown bits set in first block! Expected 0xBB0214FF, Found: 0x%08X", raw1);
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PrintAndLogEx(WARNING, "Please post this output in forum to further research on this format");
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}
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return PM3_SUCCESS;
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}
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static int CmdNoralsyRead(const char *Cmd) {
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lf_read(true, 8000);
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return CmdNoralsyDemod(Cmd);
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}
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static int CmdNoralsyClone(const char *Cmd) {
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uint16_t year = 0;
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uint32_t id = 0;
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uint32_t blocks[4] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | T55x7_ST_TERMINATOR | 3 << T55x7_MAXBLOCK_SHIFT, 0, 0};
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uint8_t *bits = calloc(96, sizeof(uint8_t));
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char cmdp = tolower(param_getchar(Cmd, 0));
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if (strlen(Cmd) == 0 || cmdp == 'h') return usage_lf_noralsy_clone();
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id = param_get32ex(Cmd, 0, 0, 10);
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year = param_get32ex(Cmd, 1, 2000, 10);
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//Q5
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if (tolower(param_getchar(Cmd, 2) == 'q'))
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blocks[0] = T5555_MODULATION_MANCHESTER | T5555_SET_BITRATE(32) | T5555_ST_TERMINATOR | 3 << T5555_MAXBLOCK_SHIFT;
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if (getnoralsyBits(id, year, bits) != PM3_SUCCESS) {
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PrintAndLogEx(ERR, "Error with tag bitstream generation.");
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return PM3_ESOFT;
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}
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blocks[1] = bytebits_to_byte(bits, 32);
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blocks[2] = bytebits_to_byte(bits + 32, 32);
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blocks[3] = bytebits_to_byte(bits + 64, 32);
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free(bits);
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PrintAndLogEx(INFO, "Preparing to clone Noralsy to T55x7 with CardId: %u", id);
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print_blocks(blocks, ARRAYLEN(blocks));
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return clone_t55xx_tag(blocks, ARRAYLEN(blocks));}
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static int CmdNoralsySim(const char *Cmd) {
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uint8_t bs[96];
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memset(bs, 0, sizeof(bs));
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uint16_t year = 0;
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uint32_t id = 0;
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char cmdp = tolower(param_getchar(Cmd, 0));
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if (strlen(Cmd) == 0 || cmdp == 'h')
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return usage_lf_noralsy_sim();
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id = param_get32ex(Cmd, 0, 0, 10);
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year = param_get32ex(Cmd, 1, 2000, 10);
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if (getnoralsyBits(id, year, bs) != PM3_SUCCESS) {
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PrintAndLogEx(ERR, "Error with tag bitstream generation.");
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return PM3_ESOFT;
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}
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PrintAndLogEx(SUCCESS, "Simulating Noralsy - CardId: %u", id);
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lf_asksim_t *payload = calloc(1, sizeof(lf_asksim_t) + sizeof(bs));
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payload->encoding = 1;
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payload->invert = 0;
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payload->separator = 1;
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payload->clock = 32;
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memcpy(payload->data, bs, sizeof(bs));
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clearCommandBuffer();
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SendCommandNG(CMD_LF_ASK_SIMULATE, (uint8_t *)payload, sizeof(lf_asksim_t) + sizeof(bs));
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free(payload);
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PacketResponseNG resp;
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WaitForResponse(CMD_LF_ASK_SIMULATE, &resp);
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PrintAndLogEx(INFO, "Done");
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if (resp.status != PM3_EOPABORTED)
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return resp.status;
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return PM3_SUCCESS;
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}
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static command_t CommandTable[] = {
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{"help", CmdHelp, AlwaysAvailable, "This help"},
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{"demod", CmdNoralsyDemod, AlwaysAvailable, "Demodulate an Noralsy tag from the GraphBuffer"},
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{"read", CmdNoralsyRead, IfPm3Lf, "Attempt to read and extract tag data from the antenna"},
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{"clone", CmdNoralsyClone, IfPm3Lf, "clone Noralsy to T55x7"},
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{"sim", CmdNoralsySim, IfPm3Lf, "simulate Noralsy tag"},
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{NULL, NULL, NULL, NULL}
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};
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static int CmdHelp(const char *Cmd) {
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(void)Cmd; // Cmd is not used so far
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CmdsHelp(CommandTable);
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return PM3_SUCCESS;
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}
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int CmdLFNoralsy(const char *Cmd) {
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clearCommandBuffer();
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return CmdsParse(CommandTable, Cmd);
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}
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int getnoralsyBits(uint32_t id, uint16_t year, uint8_t *bits) {
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//preamp
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num_to_bytebits(0xBB0214FF, 32, bits); // --> Have seen 0xBB0214FF / 0xBB0314FF UNKNOWN
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//convert ID into BCD-format
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id = DEC2BCD(id);
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year = DEC2BCD(year);
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year &= 0xFF;
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uint16_t sub1 = (id & 0xFFF0000) >> 16;
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uint8_t sub2 = (id & 0x000FF00) >> 8;
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uint8_t sub3 = (id & 0x00000FF);
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num_to_bytebits(sub1, 12, bits + 32);
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num_to_bytebits(year, 8, bits + 44);
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num_to_bytebits(0, 4, bits + 52); // --> UNKNOWN. Flag?
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num_to_bytebits(sub2, 8, bits + 56);
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num_to_bytebits(sub3, 8, bits + 64);
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//chksum byte
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uint8_t chksum = noralsy_chksum(bits + 32, 40);
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num_to_bytebits(chksum, 4, bits + 72);
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chksum = noralsy_chksum(bits, 76);
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num_to_bytebits(chksum, 4, bits + 76);
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return PM3_SUCCESS;
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}
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// by iceman
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// find Noralsy preamble in already demoded data
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int detectNoralsy(uint8_t *dest, size_t *size) {
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if (*size < 96) return -1; //make sure buffer has data
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size_t startIdx = 0;
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uint8_t preamble[] = {1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0};
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if (!preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx))
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return -2; //preamble not found
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if (*size != 96) return -3; //wrong demoded size
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//return start position
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return (int)startIdx;
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}
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/*
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*
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* 2520116 | BB0214FF2529900116360000 | 10111011 00000011 00010100 11111111 00100101 00101001 10010000 00000001 00010110 00110110 00000000 00000000
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* aaa*aaaaiiiYY*iiiicc---- **** iiiiiiii iiiiYYYY YYYY**** iiiiiiii iiiiiiii cccccccc
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*
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* a = fixed value BB0*14FF
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* i = printed id, BCD-format
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* Y = year
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* c = checksum
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* * = unknown
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*
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**/
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int demodNoralsy(void) {
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return CmdNoralsyDemod("");
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}
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