// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
-// Low frequency HID commands
+// Low frequency HID commands (known)
+//
+// Useful resources:
+// RF interface, programming a T55x7 clone, 26-bit HID H10301 encoding:
+// http://www.proxmark.org/files/Documents/125%20kHz%20-%20HID/HID_format_example.pdf
+//
+// "Understanding Card Data Formats"
+// https://www.hidglobal.com/sites/default/files/hid-understanding_card_data_formats-wp-en.pdf
+//
+// "What Format Do You Need?"
+// https://www.hidglobal.com/sites/default/files/resource_files/hid-prox-br-en.pdf
//-----------------------------------------------------------------------------
+#include "cmdlfhid.h"
+
#include <stdio.h>
#include <string.h>
-#include "proxmark3.h"
+#include "comms.h"
#include "ui.h"
#include "graph.h"
#include "cmdparser.h"
-#include "cmdlfhid.h"
+#include "cmddata.h" //for g_debugMode, demodbuff cmds
+#include "lfdemod.h" // for HIDdemodFSK
+#include "hidcardformats.h"
+#include "hidcardformatutils.h"
+#include "util.h" // for param_get8,32,64
-static int CmdHelp(const char *Cmd);
-int CmdHIDDemod(const char *Cmd)
-{
- if (GraphTraceLen < 4800) {
- PrintAndLog("too short; need at least 4800 samples");
- return 0;
+/**
+ * Converts a hex string to component "hi2", "hi" and "lo" 32-bit integers, one nibble
+ * at a time.
+ *
+ * Returns the number of nibbles (4 bits) entered.
+ */
+int hid_hexstring_to_int96(/* out */ uint32_t* hi2,/* out */ uint32_t* hi, /* out */ uint32_t* lo, const char* str) {
+ // TODO: Replace this with param_gethex when it supports arbitrary length
+ // inputs.
+ int n = 0, i = 0;
+
+ while (sscanf(&str[i++], "%1x", &n ) == 1) {
+ *hi2 = (*hi2 << 4) | (*hi >> 28);
+ *hi = (*hi << 4) | (*lo >> 28);
+ *lo = (*lo << 4) | (n & 0xf);
}
- GraphTraceLen = 4800;
- for (int i = 0; i < GraphTraceLen; ++i) {
- if (GraphBuffer[i] < 0) {
- GraphBuffer[i] = 0;
+ return i - 1;
+}
+
+void usage_encode(){
+ PrintAndLog("Usage: lf hid encode <format> [<field> <value (decimal)>] {...}");
+ PrintAndLog(" Fields: c: Card number");
+ PrintAndLog(" f: Facility code");
+ PrintAndLog(" i: Issue Level");
+ PrintAndLog(" o: OEM code");
+ PrintAndLog(" example: lf hid encode H10301 f 123 c 4567");
+}
+void PrintProxTagId(hidproxmessage_t *packed){
+ if (packed->top != 0) {
+ PrintAndLog("HID Prox TAG ID: %x%08x%08x",
+ (uint32_t)packed->top, (uint32_t)packed->mid, (uint32_t)packed->bot);
} else {
- GraphBuffer[i] = 1;
+ PrintAndLog("HID Prox TAG ID: %x%08x",
+ (uint32_t)packed->mid, (uint32_t)packed->bot);
+ }
+}
+bool Encode(/* in */ const char *Cmd, /* out */ hidproxmessage_t *packed){
+ int formatIndex = -1;
+ char format[16];
+ memset(format, 0, sizeof(format));
+ if (!strcmp(Cmd, "help") || !strcmp(Cmd, "h") || !strcmp(Cmd, "list") || !strcmp(Cmd, "?")){
+ usage_encode();
+ return false;
+ } else {
+ param_getstr(Cmd, 0, format, sizeof(format));
+ formatIndex = HIDFindCardFormat(format);
+ if (formatIndex == -1) {
+ printf("Unknown format: %s\r\n", format);
+ return false;
}
}
- RepaintGraphWindow();
- return 0;
+ hidproxcard_t data;
+ memset(&data, 0, sizeof(hidproxcard_t));
+ uint8_t cmdp = 1;
+ while(param_getchar(Cmd, cmdp) != 0x00) {
+ switch(param_getchar(Cmd, cmdp)) {
+ case 'I':
+ case 'i':
+ data.IssueLevel = param_get32ex(Cmd, cmdp+1, 0, 10);
+ cmdp += 2;
+ break;
+ case 'F':
+ case 'f':
+ data.FacilityCode = param_get32ex(Cmd, cmdp+1, 0, 10);
+ cmdp += 2;
+ break;
+ case 'C':
+ case 'c':
+ data.CardNumber = param_get64ex(Cmd, cmdp+1, 0, 10);
+ cmdp += 2;
+ break;
+ case 'o':
+ case 'O':
+ data.OEM = param_get32ex(Cmd, cmdp+1, 0, 10);
+ cmdp += 2;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+ return false;
+ }
+ }
+ memset(packed, 0, sizeof(hidproxmessage_t));
+ if (!HIDPack(formatIndex, &data, packed))
+ {
+ PrintAndLog("The card data could not be encoded in the selected format.");
+ return false;
+ } else {
+ return true;
+ }
+
+}
+void Write(hidproxmessage_t *packed){
+ UsbCommand c;
+ c.d.asBytes[0] = (packed->top != 0 && ((packed->mid & 0xFFFFFFC0) != 0))
+ ? 1 : 0; // Writing long format?
+ c.cmd = CMD_HID_CLONE_TAG;
+ c.arg[0] = (packed->top & 0x000FFFFF);
+ c.arg[1] = packed->mid;
+ c.arg[2] = packed->bot;
+ SendCommand(&c);
}
-int CmdHIDDemodFSK(const char *Cmd)
+
+//by marshmellow (based on existing demod + holiman's refactor)
+//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
+//print full HID Prox ID and some bit format details if found
+int CmdFSKdemodHID(const char *Cmd)
+{
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint32_t hi2=0, hi=0, lo=0;
+
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t BitLen = getFromGraphBuf(BitStream);
+ if (BitLen==0) return 0;
+ //get binary from fsk wave
+ int waveIdx = 0;
+ int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo, &waveIdx);
+ if (idx<0){
+ if (g_debugMode){
+ if (idx==-1){
+ PrintAndLog("DEBUG: Just Noise Detected");
+ } else if (idx == -2) {
+ PrintAndLog("DEBUG: Error demoding fsk");
+ } else if (idx == -3) {
+ PrintAndLog("DEBUG: Preamble not found");
+ } else if (idx == -4) {
+ PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
+ } else {
+ PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+ }
+ }
+ return 0;
+ }
+ if (hi2==0 && hi==0 && lo==0) {
+ if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
+ return 0;
+ }
+
+ hidproxmessage_t packed = initialize_proxmessage_object(hi2, hi, lo);
+ PrintProxTagId(&packed);
+
+ bool ret = HIDTryUnpack(&packed, false);
+ if (!ret) {
+ PrintAndLog("Invalid or unsupported tag length.");
+ }
+ setDemodBuf(BitStream,BitLen,idx);
+ setClockGrid(50, waveIdx + (idx*50));
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+ printDemodBuff();
+ }
+ return 1;
+}
+
+int CmdHIDReadFSK(const char *Cmd)
{
int findone=0;
- if(Cmd[0]=='1') findone=1;
+ if(Cmd[0]=='1') findone=1;
UsbCommand c={CMD_HID_DEMOD_FSK};
c.arg[0]=findone;
SendCommand(&c);
int CmdHIDSim(const char *Cmd)
{
- unsigned int hi = 0, lo = 0;
- int n = 0, i = 0;
-
- while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
- hi = (hi << 4) | (lo >> 28);
- lo = (lo << 4) | (n & 0xf);
+ uint32_t hi2 = 0, hi = 0, lo = 0;
+ hid_hexstring_to_int96(&hi2, &hi, &lo, Cmd);
+ if (hi2 != 0) {
+ PrintAndLog("Emulating tag with ID %x%08x%08x", hi2, hi, lo);
+ } else {
+ PrintAndLog("Emulating tag with ID %x%08x", hi, lo);
}
- PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
PrintAndLog("Press pm3-button to abort simulation");
- UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
+ UsbCommand c = {CMD_HID_SIM_TAG, {hi2, hi, lo}};
SendCommand(&c);
return 0;
}
int CmdHIDClone(const char *Cmd)
{
- unsigned int hi2 = 0, hi = 0, lo = 0;
- int n = 0, i = 0;
- UsbCommand c;
-
- if (strchr(Cmd,'l') != 0) {
- while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
- hi2 = (hi2 << 4) | (hi >> 28);
- hi = (hi << 4) | (lo >> 28);
- lo = (lo << 4) | (n & 0xf);
- }
-
- PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
+ unsigned int top = 0, mid = 0, bot = 0;
+ hid_hexstring_to_int96(&top, &mid, &bot, Cmd);
+ hidproxmessage_t packed = initialize_proxmessage_object(top, mid, bot);
+ Write(&packed);
+ return 0;
+}
- c.d.asBytes[0] = 1;
+int CmdHIDDecode(const char *Cmd){
+ if (strlen(Cmd)<3) {
+ PrintAndLog("Usage: lf hid decode <id> {p}");
+ PrintAndLog(" (optional) p: Ignore invalid parity");
+ PrintAndLog(" sample: lf hid decode 2006f623ae");
+ return 0;
}
- else {
- while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
- hi = (hi << 4) | (lo >> 28);
- lo = (lo << 4) | (n & 0xf);
- }
- PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
+ uint32_t top = 0, mid = 0, bot = 0;
+ bool ignoreParity = false;
+ hid_hexstring_to_int96(&top, &mid, &bot, Cmd);
+ hidproxmessage_t packed = initialize_proxmessage_object(top, mid, bot);
+
+ char opt = param_getchar(Cmd, 1);
+ if (opt == 'p') ignoreParity = true;
- hi2 = 0;
- c.d.asBytes[0] = 0;
+ HIDTryUnpack(&packed, ignoreParity);
+ return 0;
+}
+int CmdHIDEncode(const char *Cmd) {
+ if (strlen(Cmd) == 0) {
+ usage_encode();
+ return 0;
}
- c.cmd = CMD_HID_CLONE_TAG;
- c.arg[0] = hi2;
- c.arg[1] = hi;
- c.arg[2] = lo;
+ hidproxmessage_t packed;
+ memset(&packed, 0, sizeof(hidproxmessage_t));
+ if (Encode(Cmd, &packed))
+ PrintProxTagId(&packed);
+ return 0;
+}
- SendCommand(&c);
+int CmdHIDWrite(const char *Cmd) {
+ if (strlen(Cmd) == 0) {
+ usage_encode();
+ return 0;
+ }
+ hidproxmessage_t packed;
+ memset(&packed, 0, sizeof(hidproxmessage_t));
+ if (Encode(Cmd, &packed)){
+ PrintProxTagId(&packed);
+ Write(&packed);
+ }
return 0;
}
+int CmdHIDFormats(){
+ HIDListFormats();
+ return 0;
+}
+static int CmdHelp(const char *Cmd); // define this now so the below won't error out.
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
- {"demod", CmdHIDDemod, 1, "Demodulate HID Prox Card II (not optimal)"},
- {"fskdemod", CmdHIDDemodFSK, 0, "['1'] Realtime HID FSK demodulator (option '1' for one tag only)"},
+ {"demod", CmdFSKdemodHID, 1, "Demodulate HID Prox from GraphBuffer"},
+ {"read", CmdHIDReadFSK, 0, "['1'] Realtime HID FSK Read from antenna (option '1' for one tag only)"},
{"sim", CmdHIDSim, 0, "<ID> -- HID tag simulator"},
- {"clone", CmdHIDClone, 0, "<ID> ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"},
+ {"clone", CmdHIDClone, 0, "<ID> -- Clone HID to T55x7 (tag must be in antenna)"},
+ {"decode", CmdHIDDecode, 1, "<ID> -- Try to decode an HID tag and show its contents"},
+ {"encode", CmdHIDEncode, 1, "<format> <fields> -- Encode an HID ID with the specified format and fields"},
+ {"formats", CmdHIDFormats, 1, "List supported card formats"},
+ {"write", CmdHIDWrite, 0, "<format> <fields> -- Encode and write to a T55x7 tag (tag must be in antenna)"},
{NULL, NULL, 0, NULL}
};
projects / proxmark3-svn / blobdiff