mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-11-11 01:55:38 +08:00
bd4d1ec74e
fix: 'lf awid sim' - Clk param is used CorreCt fix: 'lf HID sim' - unified way logging fix: 'lf indala sim' - adding a draft simulation Command fix: 'lf io sim' - unified way logging fix: 'lf nedap sim' - getting bits is wrong still.. fix: 'lf paradox sim' - Helptext lfdemod.C got some reworked loops, still some debug messages to be ...
440 lines
12 KiB
C
440 lines
12 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 Indala commands
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// PSK1, rf/32, 64 or 224 bits (known)
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//-----------------------------------------------------------------------------
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#include "cmdlfindala.h"
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static int CmdHelp(const char *Cmd);
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int usage_lf_indala_demod(void) {
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PrintAndLog("Enables Indala compatible reader mode printing details of scanned tags.");
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PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
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PrintAndLog("");
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PrintAndLog("Usage: lf indala demod [h]");
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PrintAndLog("Options :");
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PrintAndLog(" h : This help");
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PrintAndLog("");
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PrintAndLog("Samples");
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PrintAndLog(" lf indala demod");
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return 0;
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}
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int usage_lf_indala_sim(void) {
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PrintAndLog("Enables simulation of Indala card with specified uid.");
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PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
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PrintAndLog("");
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PrintAndLog("Usage: lf indala sim [h] <uid>");
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PrintAndLog("Options :");
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PrintAndLog(" h : This help");
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PrintAndLog(" <uid> : 64/224 UID");
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PrintAndLog("");
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PrintAndLog("Samples");
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PrintAndLog(" lf indala sim deadc0de");
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return 0;
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}
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int usage_lf_indala_clone(void) {
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PrintAndLog("Enables cloning of Indala card with specified uid onto T55x7.");
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PrintAndLog("The T55x7 must be on the antenna when issuing this command. T55x7 blocks are calculated and printed in the process.");
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PrintAndLog("");
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PrintAndLog("Usage: lf indala clone [h] <uid> [Q5]");
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PrintAndLog("Options :");
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PrintAndLog(" h : This help");
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PrintAndLog(" <uid> : 64/224 UID");
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PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
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PrintAndLog("");
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PrintAndLog("Samples");
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PrintAndLog(" lf indala clone 112233");
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return 0;
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}
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// redesigned by marshmellow adjusted from existing decode functions
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// indala id decoding - only tested on 26 bit tags, but attempted to make it work for more
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int detectIndala26(uint8_t *dest, size_t *size, uint8_t *invert) {
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//26 bit 40134 format (don't know other formats)
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uint8_t preamble[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
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uint8_t preamble_i[] = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0};
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size_t startidx = 0;
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if (!preambleSearch(dest, preamble, sizeof(preamble), size, &startidx)){
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// if didn't find preamble try again inverting
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if (!preambleSearch(dest, preamble_i, sizeof(preamble_i), size, &startidx)) return -1;
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*invert ^= 1;
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}
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if (*size != 64 && *size != 224) return -2;
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return (int) startidx;
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}
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// this read is the "normal" read, which download lf signal and tries to demod here.
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int CmdIndalaRead(const char *Cmd) {
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lf_read(true, 30000);
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return CmdIndalaDemod(Cmd);
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}
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// Indala 26 bit decode
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// by marshmellow
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// optional arguments - same as PSKDemod (clock & invert & maxerr)
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int CmdIndalaDemod(const char *Cmd) {
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int ans;
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if (strlen(Cmd) > 0)
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ans = PSKDemod(Cmd, 0);
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else //default to RF/32
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ans = PSKDemod("32", 0);
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if (!ans){
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if (g_debugMode) PrintAndLog("DEBUG: Error - Indala can't demod signal: %d",ans);
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return 0;
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}
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uint8_t invert = 0;
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size_t size = DemodBufferLen;
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int idx = detectIndala26(DemodBuffer, &size, &invert);
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if (idx < 0 || size > 224) {
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if (g_debugMode) PrintAndLog("DEBUG: Error - Indala wrong size, expected [64|224] got: %d", size);
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return -1;
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}
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setDemodBuf(DemodBuffer, size, (size_t)idx);
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setClockGrid(g_DemodClock, g_DemodStartIdx + (idx * g_DemodClock));
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if (invert) {
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if (g_debugMode) PrintAndLog("DEBUG: Error - Indala had to invert bits");
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for (size_t i = 0; i < size; i++)
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DemodBuffer[i] ^= 1;
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}
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//convert UID to HEX
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uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
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uid1 = bytebits_to_byte(DemodBuffer,32);
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uid2 = bytebits_to_byte(DemodBuffer+32,32);
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if (DemodBufferLen==64){
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PrintAndLog("Indala Found - Bitlength %d, UID = (%x%08x)\n%s",
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DemodBufferLen, uid1, uid2, sprint_bin_break(DemodBuffer,DemodBufferLen,32)
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);
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} else {
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uid3 = bytebits_to_byte(DemodBuffer+64,32);
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uid4 = bytebits_to_byte(DemodBuffer+96,32);
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uid5 = bytebits_to_byte(DemodBuffer+128,32);
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uid6 = bytebits_to_byte(DemodBuffer+160,32);
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uid7 = bytebits_to_byte(DemodBuffer+192,32);
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PrintAndLog("Indala Found - Bitlength %d, UID = (%x%08x%08x%08x%08x%08x%08x)\n%s",
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DemodBufferLen,
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uid1, uid2, uid3, uid4, uid5, uid6, uid7, sprint_bin_break(DemodBuffer,DemodBufferLen,32)
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);
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}
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if (g_debugMode){
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PrintAndLog("DEBUG: Indala - printing demodbuffer:");
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printDemodBuff();
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}
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return 1;
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}
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// older alternative indala demodulate (has some positives and negatives)
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// returns false positives more often - but runs against more sets of samples
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// poor psk signal can be difficult to demod this approach might succeed when the other fails
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// but the other appears to currently be more accurate than this approach most of the time.
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int CmdIndalaDemodAlt(const char *Cmd) {
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// Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
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int state = -1;
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int count = 0;
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int i, j;
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// worst case with GraphTraceLen=64000 is < 4096
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// under normal conditions it's < 2048
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uint8_t rawbits[4096];
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int rawbit = 0;
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int worst = 0, worstPos = 0;
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//clear clock grid and demod plot
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setClockGrid(0, 0);
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DemodBufferLen = 0;
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// PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
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// loop through raw signal - since we know it is psk1 rf/32 fc/2 skip every other value (+=2)
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for (i = 0; i < GraphTraceLen-1; i += 2) {
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count += 1;
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if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
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// appears redundant - marshmellow
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if (state == 0) {
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for (j = 0; j < count - 8; j += 16) {
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rawbits[rawbit++] = 0;
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}
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if ((abs(count - j)) > worst) {
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worst = abs(count - j);
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worstPos = i;
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}
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}
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state = 1;
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count = 0;
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} else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
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//appears redundant
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if (state == 1) {
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for (j = 0; j < count - 8; j += 16) {
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rawbits[rawbit++] = 1;
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}
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if ((abs(count - j)) > worst) {
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worst = abs(count - j);
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worstPos = i;
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}
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}
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state = 0;
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count = 0;
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}
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}
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if (rawbit>0){
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PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
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PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
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} else {
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return 0;
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}
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// Finding the start of a UID
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int uidlen, long_wait;
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if (strcmp(Cmd, "224") == 0) {
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uidlen = 224;
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long_wait = 30;
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} else {
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uidlen = 64;
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long_wait = 29;
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}
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int start;
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int first = 0;
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for (start = 0; start <= rawbit - uidlen; start++) {
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first = rawbits[start];
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for (i = start; i < start + long_wait; i++) {
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if (rawbits[i] != first) {
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break;
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}
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}
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if (i == (start + long_wait)) {
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break;
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}
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}
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if (start == rawbit - uidlen + 1) {
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PrintAndLog("nothing to wait for");
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return 0;
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}
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// Inverting signal if needed
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if (first == 1) {
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for (i = start; i < rawbit; i++) {
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rawbits[i] = !rawbits[i];
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}
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}
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// Dumping UID
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uint8_t bits[224] = {0x00};
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char showbits[225] = {0x00};
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int bit;
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i = start;
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int times = 0;
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if (uidlen > rawbit) {
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PrintAndLog("Warning: not enough raw bits to get a full UID");
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for (bit = 0; bit < rawbit; bit++) {
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bits[bit] = rawbits[i++];
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// As we cannot know the parity, let's use "." and "/"
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showbits[bit] = '.' + bits[bit];
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}
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showbits[bit+1]='\0';
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PrintAndLog("Partial UID=%s", showbits);
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return 0;
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} else {
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for (bit = 0; bit < uidlen; bit++) {
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bits[bit] = rawbits[i++];
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showbits[bit] = '0' + bits[bit];
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}
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times = 1;
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}
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//convert UID to HEX
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uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
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int idx;
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uid1 = uid2 = 0;
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if (uidlen==64){
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for( idx=0; idx<64; idx++) {
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if (showbits[idx] == '0') {
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uid1=(uid1<<1)|(uid2>>31);
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uid2=(uid2<<1)|0;
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} else {
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uid1=(uid1<<1)|(uid2>>31);
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uid2=(uid2<<1)|1;
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}
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}
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PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
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}
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else {
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uid3 = uid4 = uid5 = uid6 = uid7 = 0;
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for( idx=0; idx<224; idx++) {
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uid1=(uid1<<1)|(uid2>>31);
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uid2=(uid2<<1)|(uid3>>31);
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uid3=(uid3<<1)|(uid4>>31);
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uid4=(uid4<<1)|(uid5>>31);
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uid5=(uid5<<1)|(uid6>>31);
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uid6=(uid6<<1)|(uid7>>31);
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if (showbits[idx] == '0')
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uid7 = (uid7<<1) | 0;
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else
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uid7 = (uid7<<1) | 1;
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}
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PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
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}
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// Checking UID against next occurrences
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int failed = 0;
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for (; i + uidlen <= rawbit;) {
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failed = 0;
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for (bit = 0; bit < uidlen; bit++) {
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if (bits[bit] != rawbits[i++]) {
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failed = 1;
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break;
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}
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}
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if (failed == 1) {
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break;
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}
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times += 1;
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}
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PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
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// Remodulating for tag cloning
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// HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod)
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// since this changes graphbuffer data.
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GraphTraceLen = 32*uidlen;
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i = 0;
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int phase = 0;
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for (bit = 0; bit < uidlen; bit++) {
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if (bits[bit] == 0) {
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phase = 0;
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} else {
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phase = 1;
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}
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int j;
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for (j = 0; j < 32; j++) {
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GraphBuffer[i++] = phase;
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phase = !phase;
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}
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}
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RepaintGraphWindow();
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return 1;
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}
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int CmdIndalaSim(const char *Cmd) {
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char cmdp = param_getchar(Cmd, 0);
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if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_indala_sim();
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uint8_t bits[224];
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size_t size = sizeof(bits);
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memset(bits, 0x00, size);
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// uid
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uint8_t hexuid[100];
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int len = 0;
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param_gethex_ex(Cmd, 0, hexuid, &len);
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if ( len > 28 )
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return usage_lf_indala_sim();
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// convert to binarray
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uint8_t counter = 224;
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for (uint8_t i=0; i< len; i++) {
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for(uint8_t j=0; j<8; j++) {
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bits[counter--] = hexuid[i] & 1;
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hexuid[i] >>= 1;
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}
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}
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// indala PSK
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uint8_t clk = 32, carrier = 2, invert = 0;
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uint16_t arg1, arg2;
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arg1 = clk << 8 | carrier;
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arg2 = invert;
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// It has to send either 64bits (8bytes) or 224bits (28bytes). Zero padding needed if not.
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// lf simpsk 1 c 32 r 2 d 0102030405060708
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// PrintAndLog("Emulating Indala UID: %u \n", cn);
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// PrintAndLog("Press pm3-button to abort simulation or run another command");
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UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
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memcpy(c.d.asBytes, bits, size);
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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// iceman - needs refactoring
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int CmdIndalaClone(const char *Cmd) {
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UsbCommand c;
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uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
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uid1 = uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0;
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int n = 0, i = 0;
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if (strchr(Cmd,'l') != 0) {
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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uid1 = (uid1 << 4) | (uid2 >> 28);
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uid2 = (uid2 << 4) | (uid3 >> 28);
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uid3 = (uid3 << 4) | (uid4 >> 28);
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uid4 = (uid4 << 4) | (uid5 >> 28);
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uid5 = (uid5 << 4) | (uid6 >> 28);
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uid6 = (uid6 << 4) | (uid7 >> 28);
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uid7 = (uid7 << 4) | (n & 0xf);
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}
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PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
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c.cmd = CMD_INDALA_CLONE_TAG_L;
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c.d.asDwords[0] = uid1;
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c.d.asDwords[1] = uid2;
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c.d.asDwords[2] = uid3;
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c.d.asDwords[3] = uid4;
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c.d.asDwords[4] = uid5;
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c.d.asDwords[5] = uid6;
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c.d.asDwords[6] = uid7;
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} else {
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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uid1 = (uid1 << 4) | (uid2 >> 28);
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uid2 = (uid2 << 4) | (n & 0xf);
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}
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PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
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c.cmd = CMD_INDALA_CLONE_TAG;
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c.arg[0] = uid1;
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c.arg[1] = uid2;
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}
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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static command_t CommandTable[] = {
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{"help", CmdHelp, 1, "this help"},
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{"demod", CmdIndalaDemod, 1, "demodulate an indala tag (PSK1) from GraphBuffer"},
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{"altdemod", CmdIndalaDemodAlt, 1, "alternative method to Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
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{"read", CmdIndalaRead, 0, "read an Indala Prox tag from the antenna"},
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{"clone", CmdIndalaClone, 0, "clone Indala to T55x7"},
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{"sim", CmdIndalaSim, 0, "simulate Indala tag"},
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{NULL, NULL, 0, NULL}
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};
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int CmdLFINDALA(const char *Cmd){
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clearCommandBuffer();
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CmdsParse(CommandTable, Cmd);
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return 0;
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}
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int CmdHelp(const char *Cmd) {
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CmdsHelp(CommandTable);
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return 0;
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}
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