From 5f6d6c900397b1c5cd6c31577480577f1c0d5cda Mon Sep 17 00:00:00 2001 From: "martin.holst@gmail.com" Date: Sat, 28 Sep 2013 19:28:55 +0000 Subject: [PATCH] Raw 14a in commandline, patch by jonor, see http://proxmark.org/forum/viewtopic.php?id=1751 for more info --- armsrc/iso14443a.c | 90 +++++++++++++++------------- client/cmdhf14a.c | 142 +++++++++++++++++++++++++++++++++++++++++++++ include/mifare.h | 3 +- 3 files changed, 194 insertions(+), 41 deletions(-) diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c index bd7e758d..33a94605 100644 --- a/armsrc/iso14443a.c +++ b/armsrc/iso14443a.c @@ -88,25 +88,25 @@ void iso14a_set_timeout(uint32_t timeout) { //----------------------------------------------------------------------------- byte_t oddparity (const byte_t bt) { - return OddByteParity[bt]; + return OddByteParity[bt]; } uint32_t GetParity(const uint8_t * pbtCmd, int iLen) { - int i; - uint32_t dwPar = 0; + int i; + uint32_t dwPar = 0; - // Generate the encrypted data - for (i = 0; i < iLen; i++) { - // Save the encrypted parity bit - dwPar |= ((OddByteParity[pbtCmd[i]]) << i); - } - return dwPar; + // Generate the encrypted data + for (i = 0; i < iLen; i++) { + // Save the encrypted parity bit + dwPar |= ((OddByteParity[pbtCmd[i]]) << i); + } + return dwPar; } void AppendCrc14443a(uint8_t* data, int len) { - ComputeCrc14443(CRC_14443_A,data,len,data+len,data+len+1); + ComputeCrc14443(CRC_14443_A,data,len,data+len,data+len+1); } // The function LogTrace() is also used by the iClass implementation in iClass.c @@ -584,7 +584,7 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { LEDsoff(); // init trace buffer - iso14a_clear_trace(); + iso14a_clear_trace(); // We won't start recording the frames that we acquire until we trigger; // a good trigger condition to get started is probably when we see a @@ -782,7 +782,7 @@ static void CodeStrangeAnswerAsTag() { int i; - ToSendReset(); + ToSendReset(); // Correction bit, might be removed when not needed ToSendStuffBit(0); @@ -806,7 +806,7 @@ static void CodeStrangeAnswerAsTag() // 1 ToSend[++ToSendMax] = SEC_D; - // Send stopbit + // Send stopbit ToSend[++ToSendMax] = SEC_F; // Flush the buffer in FPGA!! @@ -814,15 +814,15 @@ static void CodeStrangeAnswerAsTag() ToSend[++ToSendMax] = SEC_F; } - // Convert from last byte pos to length - ToSendMax++; + // Convert from last byte pos to length + ToSendMax++; } static void Code4bitAnswerAsTag(uint8_t cmd) { int i; - ToSendReset(); + ToSendReset(); // Correction bit, might be removed when not needed ToSendStuffBit(0); @@ -855,8 +855,8 @@ static void Code4bitAnswerAsTag(uint8_t cmd) ToSend[++ToSendMax] = SEC_F; } - // Convert from last byte pos to length - ToSendMax++; + // Convert from last byte pos to length + ToSendMax++; } //----------------------------------------------------------------------------- @@ -914,9 +914,9 @@ int EmSendCmdPar(uint8_t *resp, int respLen, uint32_t par); //----------------------------------------------------------------------------- void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) { - // Enable and clear the trace + // Enable and clear the trace tracing = TRUE; - iso14a_clear_trace(); + iso14a_clear_trace(); // This function contains the tag emulation uint8_t sak; @@ -996,7 +996,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) uint8_t *resp = NULL; int respLen; - // Longest possible response will be 16 bytes + 2 CRC = 18 bytes + // Longest possible response will be 16 bytes + 2 CRC = 18 bytes // This will need // 144 data bits (18 * 8) // 18 parity bits @@ -1109,9 +1109,9 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) break; } - if (tracing) { + if (tracing) { LogTrace(receivedCmd,len, 0, Uart.parityBits, TRUE); - } + } // doob - added loads of debug strings so we can see what the reader is saying to us during the sim as hi14alist is not populated // Okay, look at the command now. @@ -1144,10 +1144,10 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) // resp = resp4; respLen = resp4Len; order = 4; // Do nothing // respdata = &nack; // respsize = sizeof(nack); // 4-bit answer - EmSendCmdEx(data+(4*receivedCmd[0]),16,false); + EmSendCmdEx(data+(4*receivedCmd[0]),16,false); Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]); - // We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below - respLen = 0; + // We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below + respLen = 0; } else if(receivedCmd[0] == 0x50) { // Received a HALT // DbpString("Reader requested we HALT!:"); // Do not respond @@ -1646,7 +1646,7 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u p_hi14a_card->uidlen = 0; memset(p_hi14a_card->uid,0,10); } - + // clear uid if (uid_ptr) { memset(uid_ptr,0,10); @@ -1662,19 +1662,19 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u // SELECT_ALL ReaderTransmit(sel_all,sizeof(sel_all), NULL); if (!ReaderReceive(resp)) return 0; - + // First backup the current uid memcpy(uid_resp,resp,4); uid_resp_len = 4; // Dbprintf("uid: %02x %02x %02x %02x",uid_resp[0],uid_resp[1],uid_resp[2],uid_resp[3]); - - // calculate crypto UID. Always use last 4 Bytes. - if(cuid_ptr) { - *cuid_ptr = bytes_to_num(uid_resp, 4); + + // calculate crypto UID. Always use last 4 Bytes. + if(cuid_ptr) { + *cuid_ptr = bytes_to_num(uid_resp, 4); } // Construct SELECT UID command - memcpy(sel_uid+2,resp,5); + memcpy(sel_uid+2,resp,5); AppendCrc14443a(sel_uid,7); ReaderTransmit(sel_uid,sizeof(sel_uid), NULL); @@ -1689,11 +1689,11 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u memcpy(uid_resp, uid_resp + 1, 3); uid_resp_len = 3; } - + if(uid_ptr) { memcpy(uid_ptr + (cascade_level*3), uid_resp, uid_resp_len); } - + if(p_hi14a_card) { memcpy(p_hi14a_card->uid + (cascade_level*3), uid_resp, uid_resp_len); p_hi14a_card->uidlen += uid_resp_len; @@ -1719,7 +1719,7 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u memcpy(p_hi14a_card->ats, resp, sizeof(p_hi14a_card->ats)); p_hi14a_card->ats_len = len; } - + // reset the PCB block number iso14_pcb_blocknum = 0; return 1; @@ -1781,10 +1781,13 @@ void ReaderIso14443a(UsbCommand * c) iso14a_command_t param = c->arg[0]; uint8_t * cmd = c->d.asBytes; size_t len = c->arg[1]; + size_t lenbits = c->arg[2]; uint32_t arg0 = 0; byte_t buf[USB_CMD_DATA_SIZE]; - iso14a_clear_trace(); + if(param & ISO14A_CONNECT) { + iso14a_clear_trace(); + } iso14a_set_tracing(true); if(param & ISO14A_REQUEST_TRIGGER) { @@ -1793,8 +1796,11 @@ void ReaderIso14443a(UsbCommand * c) if(param & ISO14A_CONNECT) { iso14443a_setup(); - arg0 = iso14443a_select_card(NULL, (iso14a_card_select_t*)buf, NULL); - cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(iso14a_card_select_t)); + if(!(param & ISO14A_NO_SELECT)) { + iso14a_card_select_t *card = (iso14a_card_select_t*)buf; + arg0 = iso14443a_select_card(NULL,card,NULL); + cmd_send(CMD_ACK,arg0,card->uidlen,0,buf,sizeof(iso14a_card_select_t)); + } } if(param & ISO14A_SET_TIMEOUT) { @@ -1815,7 +1821,11 @@ void ReaderIso14443a(UsbCommand * c) AppendCrc14443a(cmd,len); len += 2; } - ReaderTransmit(cmd,len, NULL); + if(lenbits>0) { + ReaderTransmitBitsPar(cmd,lenbits,GetParity(cmd,lenbits/8), NULL); + } else { + ReaderTransmit(cmd,len, NULL); + } arg0 = ReaderReceive(buf); cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf)); } diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c index 78c269cb..9309a1a9 100644 --- a/client/cmdhf14a.c +++ b/client/cmdhf14a.c @@ -26,6 +26,7 @@ #include "mifare.h" static int CmdHelp(const char *Cmd); +static void waitCmd(uint8_t iLen); int CmdHF14AList(const char *Cmd) { @@ -469,6 +470,146 @@ int CmdHF14ASnoop(const char *Cmd) { return 0; } +int CmdHF14ACmdRaw(const char *cmd) { + UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}}; + uint8_t reply=1; + uint8_t crc=0; + uint8_t power=0; + uint8_t active=0; + uint8_t active_select=0; + uint16_t numbits=0; + char buf[5]=""; + int i=0; + uint8_t data[100]; + unsigned int datalen=0, temp; + + if (strlen(cmd)<2) { + PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-f] [-b] <0A 0B 0C ... hex>"); + PrintAndLog(" -r do not read response"); + PrintAndLog(" -c calculate and append CRC"); + PrintAndLog(" -p leave the signal field ON after receive"); + PrintAndLog(" -a active signal field ON without select"); + PrintAndLog(" -s active signal field ON with select"); + PrintAndLog(" -b number of bits to send. Useful for send partial byte"); + return 0; + } + + // strip + while (*cmd==' ' || *cmd=='\t') cmd++; + + while (cmd[i]!='\0') { + if (cmd[i]==' ' || cmd[i]=='\t') { i++; continue; } + if (cmd[i]=='-') { + switch (cmd[i+1]) { + case 'r': + reply=0; + break; + case 'c': + crc=1; + break; + case 'p': + power=1; + break; + case 'a': + active=1; + break; + case 's': + active_select=1; + break; + case 'b': + sscanf(cmd+i+2,"%d",&temp); + numbits = temp & 0xFFFF; + i+=3; + while(cmd[i]!=' ' && cmd[i]!='\0') { i++; } + i-=2; + break; + default: + PrintAndLog("Invalid option"); + return 0; + } + i+=2; + continue; + } + if ((cmd[i]>='0' && cmd[i]<='9') || + (cmd[i]>='a' && cmd[i]<='f') || + (cmd[i]>='A' && cmd[i]<='F') ) { + buf[strlen(buf)+1]=0; + buf[strlen(buf)]=cmd[i]; + i++; + + if (strlen(buf)>=2) { + sscanf(buf,"%x",&temp); + data[datalen]=(uint8_t)(temp & 0xff); + datalen++; + *buf=0; + } + continue; + } + PrintAndLog("Invalid char on input"); + return 0; + } + if(crc && datalen>0) + { + uint8_t first, second; + ComputeCrc14443(CRC_14443_A, data, datalen, &first, &second); + data[datalen++] = first; + data[datalen++] = second; + } + + if(active || active_select) + { + c.arg[0] |= ISO14A_CONNECT; + if(active) + c.arg[0] |= ISO14A_NO_SELECT; + } + if(power) + c.arg[0] |= ISO14A_NO_DISCONNECT; + if(datalen>0) + c.arg[0] |= ISO14A_RAW; + + c.arg[1] = datalen; + c.arg[2] = numbits; + memcpy(c.d.asBytes,data,datalen); + + SendCommand(&c); + + if (reply) { + if(active_select) + waitCmd(1); + if(datalen>0) + waitCmd(0); + } // if reply + return 0; +} + +static void waitCmd(uint8_t iSelect) +{ + uint8_t *recv; + UsbCommand resp; + char *hexout; + + if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) { + recv = resp.d.asBytes; + uint8_t iLen = iSelect ? resp.arg[1] : resp.arg[0]; + PrintAndLog("received %i octets",iLen); + if(!iLen) + return; + hexout = (char *)malloc(iLen * 3 + 1); + if (hexout != NULL) { + uint8_t first, second; + for (int i = 0; i < iLen; i++) { // data in hex + sprintf(&hexout[i * 3], "%02hX ", recv[i]); + } + PrintAndLog("%s", hexout); + free(hexout); + } else { + PrintAndLog("malloc failed your client has low memory?"); + } + } else { + PrintAndLog("timeout while waiting for reply."); + } +} + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, @@ -477,6 +618,7 @@ static command_t CommandTable[] = {"cuids", CmdHF14ACUIDs, 0, " Collect n>0 ISO14443 Type A UIDs in one go"}, {"sim", CmdHF14ASim, 0, " -- Fake ISO 14443a tag"}, {"snoop", CmdHF14ASnoop, 0, "Eavesdrop ISO 14443 Type A"}, + {"raw", CmdHF14ACmdRaw, 0, "Send raw hex data to tag"}, {NULL, NULL, 0, NULL} }; diff --git a/include/mifare.h b/include/mifare.h index 9ef03f20..e2b7a7c5 100644 --- a/include/mifare.h +++ b/include/mifare.h @@ -32,7 +32,8 @@ typedef enum ISO14A_COMMAND { ISO14A_RAW = 8, ISO14A_REQUEST_TRIGGER = 0x10, ISO14A_APPEND_CRC = 0x20, - ISO14A_SET_TIMEOUT = 0x40 + ISO14A_SET_TIMEOUT = 0x40, + ISO14A_NO_SELECT = 0x80 } iso14a_command_t; #endif // _MIFARE_H_ -- 2.39.2