+//-----------------------------------------------------------------------------
+//
+// 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.
+//-----------------------------------------------------------------------------
+// Low frequency Noralsy tag commands
+// ASK/Manchester, STT, RF/32, 96 bits long
+//-----------------------------------------------------------------------------
+#include "cmdlfnoralsy.h"
+#include <string.h>
+#include <inttypes.h>
+#include <math.h>
+#include "proxmark3.h"
+#include "ui.h"
+#include "util.h"
+#include "graph.h"
+#include "cmdparser.h"
+#include "cmddata.h"
+#include "cmdmain.h"
+#include "cmdlf.h"
+#include "protocols.h" // for T55xx config register definitions
+#include "lfdemod.h" // parityTest
+
+static int CmdHelp(const char *Cmd);
+
+int usage_lf_noralsy_clone(void){
+ PrintAndLog("clone a Noralsy tag to a T55x7 tag.");
+ PrintAndLog("Usage: lf noralsy clone [h] <card id> <year> <Q5>");
+ PrintAndLog("Options:");
+ PrintAndLog(" h : This help");
+ PrintAndLog(" <card id> : Noralsy card ID");
+ PrintAndLog(" <year> : Tag allocation year");
+ PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
+ PrintAndLog("");
+ PrintAndLog("Sample: lf noralsy clone 112233");
+ return 0;
+}
+
+int usage_lf_noralsy_sim(void) {
+ PrintAndLog("Enables simulation of Noralsy card with specified card number.");
+ PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
+ PrintAndLog("");
+ PrintAndLog("Usage: lf noralsy sim [h] <card id> <year>");
+ PrintAndLog("Options:");
+ PrintAndLog(" h : This help");
+ PrintAndLog(" <card id> : Noralsy card ID");
+ PrintAndLog(" <year> : Tag allocation year");
+ PrintAndLog("");
+ PrintAndLog("Sample: lf noralsy sim 112233");
+ return 0;
+}
+
+static uint8_t noralsy_chksum( uint8_t* bits, uint8_t len) {
+ uint8_t sum = 0;
+ for (uint8_t i = 0; i < len; i += 4)
+ sum ^= bytebits_to_byte(bits+i, 4);
+ return sum & 0x0F ;
+}
+int getnoralsyBits(uint32_t id, uint16_t year, uint8_t *bits) {
+ //preamp
+ num_to_bytebits(0xBB0214FF, 32, bits); // --> Have seen 0xBB0214FF / 0xBB0314FF UNKNOWN
+
+ year &= 0xFF;
+
+ uint16_t sub1 = (id & 0xFFF0000) >> 16;
+ uint8_t sub2 = (id & 0x000FF00) >> 8;
+ uint8_t sub3 = (id & 0x00000FF);
+
+ num_to_bytebits(sub1, 12, bits+32);
+ num_to_bytebits(year, 8, bits+44);
+ num_to_bytebits(0, 4, bits+52); // --> UNKNOWN. Flag?
+
+ num_to_bytebits(sub2, 8, bits+56);
+ num_to_bytebits(sub3, 8, bits+64);
+
+ //chksum byte
+ uint8_t chksum = noralsy_chksum(bits+32, 40);
+ num_to_bytebits(chksum, 4, bits+72);
+ chksum = noralsy_chksum(bits, 76);
+ num_to_bytebits(chksum, 4, bits+76);
+ return 1;
+}
+
+// by iceman
+// find Noralsy preamble in already demoded data
+int NoralsyDemod_AM(uint8_t *dest, size_t *size) {
+ if (*size < 96) return -1; //make sure buffer has data
+ size_t startIdx = 0;
+ uint8_t preamble[] = {1,0,1,1,1,0,1,1,0,0,0,0};
+ if (!preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx))
+ return -2; //preamble not found
+ if (*size != 96) return -3; //wrong demoded size
+ //return start position
+ return (int)startIdx;
+}
+
+/*
+*
+* 2520116 | BB0214FF2529900116360000 | 10111011 00000011 00010100 11111111 00100101 00101001 10010000 00000001 00010110 00110110 00000000 00000000
+* aaaaaaaaiii***iiiicc---- iiiiiiii iiiiYYYY YYYY**** iiiiiiii iiiiiiii cccccccc
+*
+* a = fixed value BB0314FF
+* i = printed id, BCD-format
+* Y = year
+* c = checksum
+*
+**/
+
+//see ASKDemod for what args are accepted
+int CmdNoralsyDemod(const char *Cmd) {
+
+ //ASK / Manchester
+ DemodBufferLen = getFromGraphBuf(DemodBuffer);
+ if (DemodBufferLen < 255) return 0;
+ int foundclk = 0;
+ size_t ststart = 0, stend = 0;
+ bool st = DetectST_ext(DemodBuffer, &DemodBufferLen, &foundclk, &ststart, &stend);
+ if (!st) return 0;
+
+ if (!ASKDemod_ext("32 0 0", FALSE, FALSE, 1, &st)) {
+ if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: ASK/Manchester Demod failed");
+ return 0;
+ }
+ size_t size = DemodBufferLen;
+ int ans = NoralsyDemod_AM(DemodBuffer, &size);
+ if (ans < 0){
+ if (g_debugMode){
+ if (ans == -1)
+ PrintAndLog("DEBUG: Error - Noralsy: too few bits found");
+ else if (ans == -2)
+ PrintAndLog("DEBUG: Error - Noralsy: preamble not found");
+ else if (ans == -3)
+ PrintAndLog("DEBUG: Error - Noralsy: Size not correct: %d", size);
+ else
+ PrintAndLog("DEBUG: Error - Noralsy: ans: %d", ans);
+ }
+ return 0;
+ }
+ setDemodBuf(DemodBuffer, 96, ans);
+ //setGrid_Clock(32);
+
+ //got a good demod
+ uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
+ uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32);
+ uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32);
+
+ uint32_t cardid = (bytebits_to_byte(DemodBuffer+32, 12)<<16) | bytebits_to_byte(DemodBuffer+32+24, 16);
+
+ uint16_t year = (raw2 & 0x000ff000) >> 12;
+ year += ( year > 0x60 ) ? 0x1900: 0x2000;
+
+ // calc checksums
+ uint8_t calc1 = noralsy_chksum(DemodBuffer+32, 40);
+ uint8_t calc2 = noralsy_chksum(DemodBuffer, 76);
+ uint8_t chk1 = 0, chk2 = 0;
+ chk1 = bytebits_to_byte(DemodBuffer+72, 4);
+ chk2 = bytebits_to_byte(DemodBuffer+76, 4);
+ // test checksums
+ if ( chk1 != calc1 ) {
+ if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: checksum 1 failed %x - %x\n", chk1, calc1);
+ return 0;
+ }
+ if ( chk2 != calc2 ) {
+ if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: checksum 2 failed %x - %x\n", chk2, calc2);
+ return 0;
+ }
+
+ PrintAndLog("Noralsy Tag Found: Card ID %X, Year: %X Raw: %08X%08X%08X", cardid, year, raw1 ,raw2, raw3);
+ if (raw1 != 0xBB0214FF) {
+ PrintAndLog("Unknown bits set in first block! Expected 0xBB0214FF, Found: 0x%08X", raw1);
+ PrintAndLog("Please post this output in forum to further research on this format");
+ }
+ return 1;
+}
+
+int CmdNoralsyRead(const char *Cmd) {
+ CmdLFRead("s");
+ getSamples("8000",TRUE);
+ return CmdNoralsyDemod(Cmd);
+}
+
+int CmdNoralsyClone(const char *Cmd) {
+
+ uint16_t year = 0;
+ uint32_t id = 0;
+ uint32_t blocks[4] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | T55x7_ST_TERMINATOR | 3 << T55x7_MAXBLOCK_SHIFT, 0, 0};
+ uint8_t bits[96];
+ uint8_t *bs = bits;
+ memset(bs, 0, sizeof(bits));
+
+ char cmdp = param_getchar(Cmd, 0);
+ if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_clone();
+
+ id = param_get32ex(Cmd, 0, 0, 16);
+ year = param_get32ex(Cmd, 1, 2000, 16);
+
+ //Q5
+ if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') {
+ //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
+ blocks[0] = T5555_MODULATION_MANCHESTER | ((32-2)>>1) << T5555_BITRATE_SHIFT | T5555_ST_TERMINATOR | 3 << T5555_MAXBLOCK_SHIFT;
+ }
+
+ if ( !getnoralsyBits(id, year, bs)) {
+ PrintAndLog("Error with tag bitstream generation.");
+ return 1;
+ }
+
+ //
+ blocks[1] = bytebits_to_byte(bs,32);
+ blocks[2] = bytebits_to_byte(bs+32,32);
+ blocks[3] = bytebits_to_byte(bs+64,32);
+
+ PrintAndLog("Preparing to clone Noralsy to T55x7 with CardId: %x", id);
+ PrintAndLog("Blk | Data ");
+ PrintAndLog("----+------------");
+ PrintAndLog(" 00 | 0x%08x", blocks[0]);
+ PrintAndLog(" 01 | 0x%08x", blocks[1]);
+ PrintAndLog(" 02 | 0x%08x", blocks[2]);
+ PrintAndLog(" 03 | 0x%08x", blocks[3]);
+
+ UsbCommand resp;
+ UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
+
+ for (int i = 3; i >= 0; --i) {
+ c.arg[0] = blocks[i];
+ c.arg[1] = i;
+ clearCommandBuffer();
+ SendCommand(&c);
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){
+ PrintAndLog("Error occurred, device did not respond during write operation.");
+ return -1;
+ }
+ }
+ return 0;
+}
+
+int CmdNoralsySim(const char *Cmd) {
+
+ uint8_t bits[96];
+ uint8_t *bs = bits;
+ memset(bs, 0, sizeof(bits));
+
+ uint16_t year = 0;
+ uint32_t id = 0;
+
+ char cmdp = param_getchar(Cmd, 0);
+ if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_sim();
+
+ id = param_get32ex(Cmd, 0, 0, 16);
+ year = param_get32ex(Cmd, 1, 2000, 16);
+
+ uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
+ uint16_t arg1, arg2;
+ size_t size = 96;
+ arg1 = clk << 8 | encoding;
+ arg2 = invert << 8 | separator;
+
+ if ( !getnoralsyBits(id, year, bs)) {
+ PrintAndLog("Error with tag bitstream generation.");
+ return 1;
+ }
+
+ PrintAndLog("Simulating Noralsy - CardId: %x", id);
+
+ UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
+ memcpy(c.d.asBytes, bs, size);
+ clearCommandBuffer();
+ SendCommand(&c);
+ return 0;
+}
+
+static command_t CommandTable[] = {
+ {"help", CmdHelp, 1, "This help"},
+ {"demod", CmdNoralsyDemod,1, "Attempt to read and extract tag data from the GraphBuffer"},
+ {"read", CmdNoralsyRead, 0, "Attempt to read and extract tag data from the antenna"},
+ {"clone", CmdNoralsyClone,0, "clone Noralsy tag"},
+ {"sim", CmdNoralsySim, 0, "simulate Noralsy tag"},
+ {NULL, NULL, 0, NULL}
+};
+
+int CmdLFNoralsy(const char *Cmd) {
+ clearCommandBuffer();
+ CmdsParse(CommandTable, Cmd);
+ return 0;
+}
+
+int CmdHelp(const char *Cmd) {
+ CmdsHelp(CommandTable);
+ return 0;
+}
projects / proxmark3-svn / commitdiff