X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/41f4bcabc6e44b9fb71414d4c5fb41fcd2dab7ea..763d1befc1b9251c49cc88a50c73a3096323736a:/client/cmdlfhid.c diff --git a/client/cmdlfhid.c b/client/cmdlfhid.c index a4b49481..14340082 100644 --- a/client/cmdlfhid.c +++ b/client/cmdlfhid.c @@ -5,20 +5,137 @@ // 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 #include -#include "cmdlfhid.h" -#include "proxmark3.h" +#include "comms.h" #include "ui.h" #include "graph.h" #include "cmdparser.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 + + +/** + * 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); + } + + return i - 1; +} + +void usage_encode(){ + PrintAndLog("Usage: lf hid encode [ ] {...}"); + 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 { + 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; + } + } + 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); +} -static int CmdHelp(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) @@ -32,7 +149,8 @@ int CmdFSKdemodHID(const char *Cmd) size_t BitLen = getFromGraphBuf(BitStream); if (BitLen==0) return 0; //get binary from fsk wave - int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo); + int waveIdx = 0; + int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo, &waveIdx); if (idx<0){ if (g_debugMode){ if (idx==-1){ @@ -53,52 +171,16 @@ int CmdFSKdemodHID(const char *Cmd) if (g_debugMode) PrintAndLog("DEBUG: Error - no values found"); return 0; } - if (hi2 != 0){ //extra large HID tags - PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)", - (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); - } - else { //standard HID tags <38 bits - uint8_t fmtLen = 0; - uint32_t fc = 0; - uint32_t cardnum = 0; - if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used - uint32_t lo2=0; - lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit - uint8_t idx3 = 1; - while(lo2>1){ //find last bit set to 1 (format len bit) - lo2=lo2>>1; - idx3++; - } - fmtLen =idx3+19; - fc =0; - cardnum=0; - if(fmtLen==26){ - cardnum = (lo>>1)&0xFFFF; - fc = (lo>>17)&0xFF; - } - if(fmtLen==34){ - cardnum = (lo>>1)&0xFFFF; - fc= ((hi&1)<<15)|(lo>>17); - } - if(fmtLen==35){ - cardnum = (lo>>1)&0xFFFFF; - fc = ((hi&1)<<11)|(lo>>21); - } - } - else { //if bit 38 is not set then 37 bit format is used - fmtLen = 37; - fc = 0; - cardnum = 0; - if(fmtLen == 37){ - cardnum = (lo>>1)&0x7FFFF; - fc = ((hi&0xF)<<12)|(lo>>20); - } - } - PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", - (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, - (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum); + + 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(); @@ -109,7 +191,7 @@ int CmdFSKdemodHID(const char *Cmd) 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); @@ -118,67 +200,92 @@ int CmdHIDReadFSK(const char *Cmd) 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 {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); - hi2 = 0; - c.d.asBytes[0] = 0; + char opt = param_getchar(Cmd, 1); + if (opt == 'p') ignoreParity = true; + + 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", 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, " -- HID tag simulator"}, - {"clone", CmdHIDClone, 0, " ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"}, + {"clone", CmdHIDClone, 0, " -- Clone HID to T55x7 (tag must be in antenna)"}, + {"decode", CmdHIDDecode, 1, " -- Try to decode an HID tag and show its contents"}, + {"encode", CmdHIDEncode, 1, " -- Encode an HID ID with the specified format and fields"}, + {"formats", CmdHIDFormats, 1, "List supported card formats"}, + {"write", CmdHIDWrite, 0, " -- Encode and write to a T55x7 tag (tag must be in antenna)"}, {NULL, NULL, 0, NULL} };