X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7e735c1398b9c3643d292614db10c7e58c58db85..d56ee2b1db8ebf88a3ce1afa0e57a18ee10a0ea4:/armsrc/iso14443a.c diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c index d49e6ae1..425352b9 100644 --- a/armsrc/iso14443a.c +++ b/armsrc/iso14443a.c @@ -871,17 +871,9 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { uint8_t cardAUTHKEY = 0xff; // no authentication // allow collecting up to 8 sets of nonces to allow recovery of up to 8 keys - nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; // for 2 separate attack types (std, moebius) - memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp)); - - uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; // for 2nd attack type (moebius) - memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected)); - uint8_t nonce1_count = 0; - uint8_t nonce2_count = 0; - uint8_t moebius_n_count = 0; - bool gettingMoebius = false; - uint8_t mM = 0; // moebius_modifier for collection storage - + nonces_t ar_nr_nonces[ATTACK_KEY_COUNT]; // for attack types moebius + memset(ar_nr_nonces, 0x00, sizeof(ar_nr_nonces)); + uint8_t moebius_count = 0; switch (tagType) { case 1: { // MIFARE Classic 1k @@ -926,7 +918,11 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { memcpy(data+3, emdata+4, 4); // uid bytes 3-7 flags |= FLAG_7B_UID_IN_DATA; } - } break; + } break; + case 8: { // MIFARE Classic 4k + response1[0] = 0x02; + sak = 0x18; + } break; default: { Dbprintf("Error: unkown tagtype (%d)",tagType); return; @@ -1056,7 +1052,7 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { // Clean receive command buffer if(!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) { - DbpString("Button press"); + Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen()); break; } p_response = NULL; @@ -1116,12 +1112,12 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { p_response = NULL; } else if (receivedCmd[0] == MIFARE_ULEV1_READ_CNT && tagType == 7) { // Received a READ COUNTER -- uint8_t index = receivedCmd[1]; - uint8_t data[] = {0x00,0x00,0x00,0x14,0xa5}; + uint8_t cmd[] = {0x00,0x00,0x00,0x14,0xa5}; if ( counters[index] > 0) { - num_to_bytes(counters[index], 3, data); - AppendCrc14443a(data, sizeof(data)-2); + num_to_bytes(counters[index], 3, cmd); + AppendCrc14443a(cmd, sizeof(cmd)-2); } - EmSendCmdEx(data,sizeof(data),false); + EmSendCmdEx(cmd,sizeof(cmd),false); p_response = NULL; } else if (receivedCmd[0] == MIFARE_ULEV1_INCR_CNT && tagType == 7) { // Received a INC COUNTER -- // number of counter @@ -1153,15 +1149,21 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { EmSendCmdEx(emdata, sizeof(emdata), false); p_response = NULL; } else { + + cardAUTHKEY = receivedCmd[0] - 0x60; + cardAUTHSC = receivedCmd[1] / 4; // received block num - // incease nonce at every command recieved. this is time consuming. + // incease nonce at AUTH requests. this is time consuming. nonce = prand(); - num_to_bytes(nonce, 4, response5); - prepare_tag_modulation(&responses[5], DYNAMIC_MODULATION_BUFFER_SIZE); - - cardAUTHSC = receivedCmd[1] / 4; // received block num - cardAUTHKEY = receivedCmd[0] - 0x60; - p_response = &responses[5]; order = 7; + //num_to_bytes(nonce, 4, response5); + num_to_bytes(nonce, 4, dynamic_response_info.response); + dynamic_response_info.response_n = 4; + + //prepare_tag_modulation(&responses[5], DYNAMIC_MODULATION_BUFFER_SIZE); + prepare_tag_modulation(&dynamic_response_info, DYNAMIC_MODULATION_BUFFER_SIZE); + p_response = &dynamic_response_info; + //p_response = &responses[5]; + order = 7; } } else if(receivedCmd[0] == ISO14443A_CMD_RATS) { // Received a RATS request if (tagType == 1 || tagType == 2) { // RATS not supported @@ -1178,69 +1180,60 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { // Collect AR/NR per keytype & sector if ( (flags & FLAG_NR_AR_ATTACK) == FLAG_NR_AR_ATTACK ) { - for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { + int8_t index = -1; + int8_t empty = -1; + for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { + // find which index to use + if ( (cardAUTHSC == ar_nr_nonces[i].sector) && (cardAUTHKEY == ar_nr_nonces[i].keytype)) + index = i; + + // keep track of empty slots. + if ( ar_nr_nonces[i].state == EMPTY) + empty = i; + } + // if no empty slots. Choose first and overwrite. + if ( index == -1 ) { + if ( empty == -1 ) { + index = 0; + ar_nr_nonces[index].state = EMPTY; + } else { + index = empty; + } + } + + switch(ar_nr_nonces[index].state) { + case EMPTY: { + // first nonce collect + ar_nr_nonces[index].cuid = cuid; + ar_nr_nonces[index].sector = cardAUTHSC; + ar_nr_nonces[index].keytype = cardAUTHKEY; + ar_nr_nonces[index].nonce = nonce; + ar_nr_nonces[index].nr = nr; + ar_nr_nonces[index].ar = ar; + ar_nr_nonces[index].state = FIRST; + break; + } + case FIRST : { + // second nonce collect + ar_nr_nonces[index].nonce2 = nonce; + ar_nr_nonces[index].nr2 = nr; + ar_nr_nonces[index].ar2 = ar; + ar_nr_nonces[index].state = SECOND; + + // send to client + cmd_send(CMD_ACK, CMD_SIMULATE_MIFARE_CARD, 0, 0, &ar_nr_nonces[index], sizeof(nonces_t)); - if ( ar_nr_collected[i+mM] == 0 || ( - (cardAUTHSC == ar_nr_resp[i+mM].sector) && - (cardAUTHKEY == ar_nr_resp[i+mM].keytype) && - (ar_nr_collected[i+mM] > 0) - ) - ) { - - // if first auth for sector, or matches sector and keytype of previous auth - if (ar_nr_collected[i+mM] > 1) continue; - - // if we haven't already collected 2 nonces for this sector - if (ar_nr_resp[ar_nr_collected[i+mM]].ar != ar) { - // Avoid duplicates... probably not necessary, ar should vary. - if (ar_nr_collected[i+mM]==0) { - // first nonce collect - nonce1_count++; - // add this nonce to first moebius nonce - ar_nr_resp[i+ATTACK_KEY_COUNT].cuid = cuid; - ar_nr_resp[i+ATTACK_KEY_COUNT].sector = cardAUTHSC; - ar_nr_resp[i+ATTACK_KEY_COUNT].keytype = cardAUTHKEY; - ar_nr_resp[i+ATTACK_KEY_COUNT].nonce = nonce; - ar_nr_resp[i+ATTACK_KEY_COUNT].nr = nr; - ar_nr_resp[i+ATTACK_KEY_COUNT].ar = ar; - ar_nr_collected[i+ATTACK_KEY_COUNT]++; - } else { - // second nonce collect (std and moebius) - ar_nr_resp[i+mM].nonce2 = nonce; - ar_nr_resp[i+mM].nr2 = nr; - ar_nr_resp[i+mM].ar2 = ar; - - if (!gettingMoebius) { - nonce2_count++; - // check if this was the last second nonce we need for std attack - if ( nonce2_count == nonce1_count ) { - // done collecting std test switch to moebius - // first finish incrementing last sample - ar_nr_collected[i+mM]++; - // switch to moebius collection - gettingMoebius = true; - mM = ATTACK_KEY_COUNT; - break; - } - } else { - moebius_n_count++; - // if we've collected all the nonces we need - finish. - if (nonce1_count == moebius_n_count) { - cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,0,0,&ar_nr_resp,sizeof(ar_nr_resp)); - nonce1_count = 0; - nonce2_count = 0; - moebius_n_count = 0; - gettingMoebius = false; - } - } - } - ar_nr_collected[i+mM]++; - } - // we found right spot for this nonce stop looking - break; - } + ar_nr_nonces[index].state = EMPTY; + ar_nr_nonces[index].sector = 0; + ar_nr_nonces[index].keytype = 0; + + moebius_count++; + break; } + default: break; } + } + p_response = NULL; } else if (receivedCmd[0] == MIFARE_ULC_AUTH_1 ) { // ULC authentication, or Desfire Authentication } else if (receivedCmd[0] == MIFARE_ULEV1_AUTH) { // NTAG / EV-1 authentication @@ -1318,7 +1311,7 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { dynamic_response_info.response_n += 2; if (prepare_tag_modulation(&dynamic_response_info,DYNAMIC_MODULATION_BUFFER_SIZE) == false) { - Dbprintf("Error preparing tag response"); + DbpString("Error preparing tag response"); LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); break; } @@ -1403,9 +1396,10 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { */ if (MF_DBGLEVEL >= 4){ - Dbprintf("-[ Wake ups after halt [%d]", happened); - Dbprintf("-[ Messages after halt [%d]", happened2); - Dbprintf("-[ Num of received cmd [%d]", cmdsRecvd); + Dbprintf("-[ Wake ups after halt [%d]", happened); + Dbprintf("-[ Messages after halt [%d]", happened2); + Dbprintf("-[ Num of received cmd [%d]", cmdsRecvd); + Dbprintf("-[ Num of moebius tries [%d]", moebius_count); } cmd_send(CMD_ACK,1,0,0,0,0); @@ -2053,7 +2047,6 @@ int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) { { iso14_pcb_blocknum ^= 1; } - return len; } @@ -2500,17 +2493,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * // Here, we collect CUID, NT, NR, AR, CUID2, NT2, NR2, AR2 // This can be used in a reader-only attack. - nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; // for 2 separate attack types (nml, moebius) - memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp)); - - uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; // for 2nd attack type (moebius) - memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected)); - uint8_t nonce1_count = 0; - uint8_t nonce2_count = 0; - uint8_t moebius_n_count = 0; - bool gettingMoebius = false; - uint8_t mM = 0; // moebius_modifier for collection storage - bool doBufResetNext = false; + nonces_t ar_nr_nonces[ATTACK_KEY_COUNT]; + memset(ar_nr_nonces, 0x00, sizeof(ar_nr_nonces)); // -- Determine the UID // Can be set from emulator memory or incoming data @@ -2752,101 +2736,63 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * uint32_t nr = bytes_to_num(receivedCmd, 4); uint32_t ar = bytes_to_num(&receivedCmd[4], 4); - if (doBufResetNext) { - // Reset, lets try again! - if (MF_DBGLEVEL >= 4) Dbprintf("Re-read after previous NR_AR_ATTACK, resetting buffer"); - memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp)); - memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected)); - mM = 0; - doBufResetNext = false; - } - - for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { + // Collect AR/NR per keytype & sector + if ( (flags & FLAG_NR_AR_ATTACK) == FLAG_NR_AR_ATTACK ) { - if ( ar_nr_collected[i+mM] == 0 || ( - (cardAUTHSC == ar_nr_resp[i+mM].sector) && - (cardAUTHKEY == ar_nr_resp[i+mM].keytype) && - (ar_nr_collected[i+mM] > 0) - ) - ) { - - // if first auth for sector, or matches sector and keytype of previous auth - if (ar_nr_collected[i+mM] < 2) { - // if we haven't already collected 2 nonces for this sector - if (ar_nr_resp[ar_nr_collected[i+mM]].ar != ar) { - // Avoid duplicates... probably not necessary, ar should vary. - if (ar_nr_collected[i+mM]==0) { - // first nonce collect - ar_nr_resp[i+mM].cuid = cuid; - ar_nr_resp[i+mM].sector = cardAUTHSC; - ar_nr_resp[i+mM].keytype = cardAUTHKEY; - ar_nr_resp[i+mM].nonce = nonce; - ar_nr_resp[i+mM].nr = nr; - ar_nr_resp[i+mM].ar = ar; - nonce1_count++; - // add this nonce to first moebius nonce - ar_nr_resp[i+ATTACK_KEY_COUNT].cuid = cuid; - ar_nr_resp[i+ATTACK_KEY_COUNT].sector = cardAUTHSC; - ar_nr_resp[i+ATTACK_KEY_COUNT].keytype = cardAUTHKEY; - ar_nr_resp[i+ATTACK_KEY_COUNT].nonce = nonce; - ar_nr_resp[i+ATTACK_KEY_COUNT].nr = nr; - ar_nr_resp[i+ATTACK_KEY_COUNT].ar = ar; - ar_nr_collected[i+ATTACK_KEY_COUNT]++; - } else { // second nonce collect (std and moebius) - ar_nr_resp[i+mM].nonce2 = nonce; - ar_nr_resp[i+mM].nr2 = nr; - ar_nr_resp[i+mM].ar2 = ar; - if (!gettingMoebius) { - nonce2_count++; - // check if this was the last second nonce we need for std attack - if ( nonce2_count == nonce1_count ) { - // done collecting std test switch to moebius - // first finish incrementing last sample - ar_nr_collected[i+mM]++; - // switch to moebius collection - gettingMoebius = true; - mM = ATTACK_KEY_COUNT; - break; - } - } else { - moebius_n_count++; - // if we've collected all the nonces we need - finish. - - if (nonce1_count == moebius_n_count) { - cmd_send(CMD_ACK, CMD_SIMULATE_MIFARE_CARD, 0, 0, &ar_nr_resp, sizeof(ar_nr_resp)); - nonce1_count = 0; - nonce2_count = 0; - moebius_n_count = 0; - gettingMoebius = false; - doBufResetNext = true; - finished = ( ((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE)); - } - } - } - ar_nr_collected[i+mM]++; - } + int8_t index = -1; + int8_t empty = -1; + for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { + // find which index to use + if ( (cardAUTHSC == ar_nr_nonces[i].sector) && (cardAUTHKEY == ar_nr_nonces[i].keytype)) + index = i; + + // keep track of empty slots. + if ( ar_nr_nonces[i].state == EMPTY) + empty = i; + } + // if no empty slots. Choose first and overwrite. + if ( index == -1 ) { + if ( empty == -1 ) { + index = 0; + ar_nr_nonces[index].state = EMPTY; + } else { + index = empty; } - // we found right spot for this nonce stop looking - break; } - } + switch(ar_nr_nonces[index].state) { + case EMPTY: { + // first nonce collect + ar_nr_nonces[index].cuid = cuid; + ar_nr_nonces[index].sector = cardAUTHSC; + ar_nr_nonces[index].keytype = cardAUTHKEY; + ar_nr_nonces[index].nonce = nonce; + ar_nr_nonces[index].nr = nr; + ar_nr_nonces[index].ar = ar; + ar_nr_nonces[index].state = FIRST; + break; + } + case FIRST : { + // second nonce collect + ar_nr_nonces[index].nonce2 = nonce; + ar_nr_nonces[index].nr2 = nr; + ar_nr_nonces[index].ar2 = ar; + ar_nr_nonces[index].state = SECOND; + + // send to client + cmd_send(CMD_ACK, CMD_SIMULATE_MIFARE_CARD, 0, 0, &ar_nr_nonces[index], sizeof(nonces_t)); + + ar_nr_nonces[index].state = EMPTY; + ar_nr_nonces[index].sector = 0; + ar_nr_nonces[index].keytype = 0; + break; + } + default: break; + } + } /* - // Collect AR/NR - // if(ar_nr_collected < 2 && cardAUTHSC == 2){ - if(ar_nr_collected < 2) { - // if(ar_nr_responses[2] != nr) { - ar_nr_responses[ar_nr_collected*4] = cuid; - ar_nr_responses[ar_nr_collected*4+1] = nonce; - ar_nr_responses[ar_nr_collected*4+2] = nr; - ar_nr_responses[ar_nr_collected*4+3] = ar; - ar_nr_collected++; - // } - - // Interactive mode flag, means we need to send ACK - finished = ( ((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE)&& ar_nr_collected == 2); - } + // Interactive mode flag, means we need to send ACK crypto1_word(pcs, ar , 1); cardRr = nr ^ crypto1_word(pcs, 0, 0); @@ -3081,45 +3027,6 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } } - // Interactive mode flag, means we need to send ACK - /* - if((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE && flags & FLAG_NR_AR_ATTACK == FLAG_NR_AR_ATTACK) { - // May just aswell send the collected ar_nr in the response aswell - uint8_t len = ar_nr_collected * 4 * 4; - cmd_send(CMD_ACK, CMD_SIMULATE_MIFARE_CARD, len, 0, &ar_nr_responses, len); - } - */ - - if( ((flags & FLAG_NR_AR_ATTACK) == FLAG_NR_AR_ATTACK ) && MF_DBGLEVEL >= 1 ) { - for ( uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { - if (ar_nr_collected[i] == 2) { - Dbprintf("Collected two pairs of AR/NR which can be used to extract %s from reader for sector %d:", (i= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());