+int usage_lf_em_protect(void) {
+ PrintAndLog("Protect EM4x05. Tag must be on antenna. ");
+ PrintAndLog("");
+ PrintAndLog("Usage: lf em 4x05protect [h] d <data> p <pwd> [s] [i]");
+ PrintAndLog("Options:");
+ PrintAndLog(" h - this help");
+ PrintAndLog(" d <data> - data to write (hex)");
+ PrintAndLog(" p <pwd> - password (hex) (optional)");
+ PrintAndLog(" s - swap the data bit order before write");
+ PrintAndLog(" i - invert the data bits before write");
+ PrintAndLog("samples:");
+ PrintAndLog(" lf em 4x05protect d 11223344");
+ PrintAndLog(" lf em 4x05protect p deadc0de d 11223344 s i");
+ return 0;
+}
+
+int EM4x05Protect(uint32_t data, uint32_t pwd, bool usePwd, bool swap, bool invert) {
+ if (swap) data = SwapBits(data, 32);
+
+ if (invert) data ^= 0xFFFFFFFF;
+
+ if ( !usePwd ) {
+ PrintAndLog("Writing Protect data %08X", data);
+ } else {
+ PrintAndLog("Writing Protect data %08X using password %08X", data, pwd);
+ }
+
+ uint16_t flag = usePwd;
+
+ UsbCommand c = {CMD_EM4X_PROTECT, {flag, data, pwd}};
+ clearCommandBuffer();
+ SendCommand(&c);
+ UsbCommand resp;
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)){
+ PrintAndLog("Error occurred, device did not respond during protect operation.");
+ return -1;
+ }
+ if ( !downloadSamplesEM() ) {
+ return -1;
+ }
+ //check response for 00001010 for write confirmation!
+ //attempt demod:
+ uint32_t dummy = 0;
+ int result = demodEM4x05resp(&dummy,false);
+ if (result == 1) {
+ PrintAndLog("Protect Verified");
+ } else {
+ PrintAndLog("Protect could not be verified");
+ }
+ return result;
+}
+
+int CmdEM4x05ProtectWrite(const char *Cmd) {
+ bool errors = false;
+ bool usePwd = false;
+ uint32_t data = 0xFFFFFFFF;
+ uint32_t pwd = 0xFFFFFFFF;
+ bool swap = false;
+ bool invert = false;
+ bool gotData = false;
+ char cmdp = 0;
+ while(param_getchar(Cmd, cmdp) != 0x00)
+ {
+ switch(param_getchar(Cmd, cmdp))
+ {
+ case 'h':
+ case 'H':
+ return usage_lf_em_write();
+ case 'd':
+ case 'D':
+ data = param_get32ex(Cmd, cmdp+1, 0, 16);
+ gotData = true;
+ cmdp += 2;
+ break;
+ case 'i':
+ case 'I':
+ invert = true;
+ cmdp++;
+ break;
+ case 'p':
+ case 'P':
+ pwd = param_get32ex(Cmd, cmdp+1, 1, 16);
+ if (pwd == 1) {
+ PrintAndLog("invalid pwd");
+ errors = true;
+ }
+ usePwd = true;
+ cmdp += 2;
+ break;
+ case 's':
+ case 'S':
+ swap = true;
+ cmdp++;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+ errors = true;
+ break;
+ }
+ if(errors) break;
+ }
+ //Validations
+ if(errors) return usage_lf_em_protect();
+
+ if ( strlen(Cmd) == 0 ) return usage_lf_em_protect();
+
+ if (!gotData) {
+ PrintAndLog("You must enter the data you want to write");
+ return usage_lf_em_protect();
+ }
+ return EM4x05Protect(data, pwd, usePwd, swap, invert);
+}
+
+void printEM4x05config(uint32_t wordData) {
+ uint16_t datarate = EM4x05_GET_BITRATE(wordData);
+ uint8_t encoder = ((wordData >> 6) & 0xF);
+ char enc[14];
+ memset(enc,0,sizeof(enc));
+
+ uint8_t PSKcf = (wordData >> 10) & 0x3;
+ char cf[10];
+ memset(cf,0,sizeof(cf));
+ uint8_t delay = (wordData >> 12) & 0x3;
+ char cdelay[33];
+ memset(cdelay,0,sizeof(cdelay));
+ uint8_t numblks = EM4x05_GET_NUM_BLOCKS(wordData);
+ uint8_t LWR = numblks+5-1; //last word read
+ switch (encoder) {
+ case 0: snprintf(enc,sizeof(enc),"NRZ"); break;
+ case 1: snprintf(enc,sizeof(enc),"Manchester"); break;
+ case 2: snprintf(enc,sizeof(enc),"Biphase"); break;
+ case 3: snprintf(enc,sizeof(enc),"Miller"); break;
+ case 4: snprintf(enc,sizeof(enc),"PSK1"); break;
+ case 5: snprintf(enc,sizeof(enc),"PSK2"); break;
+ case 6: snprintf(enc,sizeof(enc),"PSK3"); break;
+ case 7: snprintf(enc,sizeof(enc),"Unknown"); break;
+ case 8: snprintf(enc,sizeof(enc),"FSK1"); break;
+ case 9: snprintf(enc,sizeof(enc),"FSK2"); break;
+ default: snprintf(enc,sizeof(enc),"Unknown"); break;
+ }
+
+ switch (PSKcf) {
+ case 0: snprintf(cf,sizeof(cf),"RF/2"); break;
+ case 1: snprintf(cf,sizeof(cf),"RF/8"); break;
+ case 2: snprintf(cf,sizeof(cf),"RF/4"); break;
+ case 3: snprintf(cf,sizeof(cf),"unknown"); break;
+ }
+
+ switch (delay) {
+ case 0: snprintf(cdelay, sizeof(cdelay),"no delay"); break;
+ case 1: snprintf(cdelay, sizeof(cdelay),"BP/8 or 1/8th bit period delay"); break;
+ case 2: snprintf(cdelay, sizeof(cdelay),"BP/4 or 1/4th bit period delay"); break;
+ case 3: snprintf(cdelay, sizeof(cdelay),"no delay"); break;
+ }
+ uint8_t readLogin = (wordData & EM4x05_READ_LOGIN_REQ)>>18;
+ uint8_t readHKL = (wordData & EM4x05_READ_HK_LOGIN_REQ)>>19;
+ uint8_t writeLogin = (wordData & EM4x05_WRITE_LOGIN_REQ)>>20;
+ uint8_t writeHKL = (wordData & EM4x05_WRITE_HK_LOGIN_REQ)>>21;
+ uint8_t raw = (wordData & EM4x05_READ_AFTER_WRITE)>>22;
+ uint8_t disable = (wordData & EM4x05_DISABLE_ALLOWED)>>23;
+ uint8_t rtf = (wordData & EM4x05_READER_TALK_FIRST)>>24;
+ uint8_t pigeon = (wordData & (1<<26))>>26;
+ PrintAndLog("ConfigWord: %08X (Word 4)\n", wordData);
+ PrintAndLog("Config Breakdown:");
+ PrintAndLog(" Data Rate: %02u | RF/%u", wordData & 0x3F, datarate);
+ PrintAndLog(" Encoder: %u | %s", encoder, enc);
+ PrintAndLog(" PSK CF: %u | %s", PSKcf, cf);
+ PrintAndLog(" Delay: %u | %s", delay, cdelay);
+ PrintAndLog(" LastWordR: %02u | Address of last word for default read - meaning %u blocks are output", LWR, numblks);
+ PrintAndLog(" ReadLogin: %u | Read Login is %s", readLogin, readLogin ? "Required" : "Not Required");
+ PrintAndLog(" ReadHKL: %u | Read Housekeeping Words Login is %s", readHKL, readHKL ? "Required" : "Not Required");
+ PrintAndLog("WriteLogin: %u | Write Login is %s", writeLogin, writeLogin ? "Required" : "Not Required");
+ PrintAndLog(" WriteHKL: %u | Write Housekeeping Words Login is %s", writeHKL, writeHKL ? "Required" : "Not Required");
+ PrintAndLog(" R.A.W.: %u | Read After Write is %s", raw, raw ? "On" : "Off");
+ PrintAndLog(" Disable: %u | Disable Command is %s", disable, disable ? "Accepted" : "Not Accepted");
+ PrintAndLog(" R.T.F.: %u | Reader Talk First is %s", rtf, rtf ? "Enabled" : "Disabled");
+ PrintAndLog(" Pigeon: %u | Pigeon Mode is %s\n", pigeon, pigeon ? "Enabled" : "Disabled");
+}
+
+void printEM4x05info(uint8_t chipType, uint8_t cap, uint16_t custCode, uint32_t serial) {
+ switch (chipType) {
+ case 9: PrintAndLog("\n Chip Type: %u | EM4305", chipType); break;
+ case 4: PrintAndLog(" Chip Type: %u | Unknown", chipType); break;
+ case 2: PrintAndLog(" Chip Type: %u | EM4469", chipType); break;
+ //add more here when known
+ default: PrintAndLog(" Chip Type: %u Unknown", chipType); break;
+ }
+
+ switch (cap) {
+ case 3: PrintAndLog(" Cap Type: %u | 330pF",cap); break;
+ case 2: PrintAndLog(" Cap Type: %u | %spF",cap, (chipType==2)? "75":"210"); break;
+ case 1: PrintAndLog(" Cap Type: %u | 250pF",cap); break;
+ case 0: PrintAndLog(" Cap Type: %u | no resonant capacitor",cap); break;
+ default: PrintAndLog(" Cap Type: %u | unknown",cap); break;
+ }
+
+ PrintAndLog(" Cust Code: %03u | %s", custCode, (custCode == 0x200) ? "Default": "Unknown");
+ if (serial != 0) {
+ PrintAndLog("\n Serial #: %08X\n", serial);
+ }
+}
+
+void printEM4x05ProtectionBits(uint32_t wordData) {
+ for (uint8_t i = 0; i < 15; i++) {
+ PrintAndLog(" Word: %02u | %s", i, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");
+ if (i==14) {
+ PrintAndLog(" Word: %02u | %s", i+1, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");
+ }
+ }
+}
+
+//quick test for EM4x05/EM4x69 tag
+bool EM4x05Block0Test(uint32_t *wordData) {
+ if (EM4x05ReadWord_ext(0,0,false,wordData) == 1) {
+ return true;
+ }
+ return false;
+}
+
+int CmdEM4x05info(const char *Cmd) {
+ //uint8_t addr = 0;
+ uint32_t pwd;
+ uint32_t wordData = 0;
+ bool usePwd = false;
+ uint8_t ctmp = param_getchar(Cmd, 0);
+ if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_dump();
+
+ // for now use default input of 1 as invalid (unlikely 1 will be a valid password...)
+ pwd = param_get32ex(Cmd, 0, 1, 16);
+
+ if ( pwd != 1 ) {
+ usePwd = true;
+ }
+
+ // read word 0 (chip info)
+ // block 0 can be read even without a password.
+ if ( !EM4x05Block0Test(&wordData) )
+ return -1;
+
+ uint8_t chipType = (wordData >> 1) & 0xF;
+ uint8_t cap = (wordData >> 5) & 3;
+ uint16_t custCode = (wordData >> 9) & 0x3FF;
+
+ // read word 1 (serial #) doesn't need pwd
+ wordData = 0;
+ if (EM4x05ReadWord_ext(1, 0, false, &wordData) != 1) {
+ //failed, but continue anyway...
+ }
+ printEM4x05info(chipType, cap, custCode, wordData);
+
+ // read word 4 (config block)
+ // needs password if one is set
+ wordData = 0;
+ if ( EM4x05ReadWord_ext(4, pwd, usePwd, &wordData) != 1 ) {
+ //failed
+ PrintAndLog("Config block read failed - might be password protected.");
+ return 0;
+ }
+ printEM4x05config(wordData);
+
+ // read word 14 and 15 to see which is being used for the protection bits
+ wordData = 0;
+ if ( EM4x05ReadWord_ext(14, pwd, usePwd, &wordData) != 1 ) {
+ //failed
+ return 0;
+ }
+ // if status bit says this is not the used protection word
+ if (!(wordData & 0x8000)) {
+ if ( EM4x05ReadWord_ext(15, pwd, usePwd, &wordData) != 1 ) {
+ //failed
+ return 0;
+ }
+ }
+ if (!(wordData & 0x8000)) {
+ //something went wrong
+ return 0;
+ }
+ printEM4x05ProtectionBits(wordData);
+
+ return 1;
+}
+
+
projects / proxmark3-svn / blobdiff