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Updates nfc-mfclassic to integrate new magic card

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- Integrates a new type of 4K card (accepts unlock command 0x40, but
does not provide an ACK)
- Reverses the necessity of the 'u|U' command to be obligatory,
maintaining previous compatibility with the CLI
This commit is contained in:
Simon Yorkston 2017-02-28 20:48:03 +01:00
parent c51caf424a
commit fc7f81a8f6
1 changed files with 22 additions and 10 deletions
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32
utils/nfc-mfclassic.c
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@ -70,6 +70,7 @@ static bool bForceKeyFile;
static bool bTolerateFailures; static bool bTolerateFailures;
static bool bFormatCard; static bool bFormatCard;
static bool magic2 = false; static bool magic2 = false;
static bool unlocked = false;
static uint8_t uiBlocks; static uint8_t uiBlocks;
static uint8_t keys[] = { static uint8_t keys[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
@ -248,12 +249,14 @@ unlock_card(void)
transmit_bytes(abtHalt, 4); transmit_bytes(abtHalt, 4);
// now send unlock // now send unlock
if (!transmit_bits(abtUnlock1, 7)) { if (!transmit_bits(abtUnlock1, 7)) {
printf("unlock failure!\n"); printf("Warning: Unlock command [1/2]: failed / not acknowledged.\n");
return false; } else {
} if (transmit_bytes(abtUnlock2, 1)) {
if (!transmit_bytes(abtUnlock2, 1)) { printf("Card unlocked\n");
printf("unlock failure!\n"); unlocked = true;
return false; } else {
printf("Warning: Unlock command [2/2]: failed / not acknowledged.\n");
}
} }
// reset reader // reset reader
@ -355,8 +358,12 @@ read_card(int read_unlocked)
memcpy(mtDump.amb[iBlock].mbt.abtKeyB, mtKeys.amb[iBlock].mbt.abtKeyB, sizeof(mtDump.amb[iBlock].mbt.abtKeyB)); memcpy(mtDump.amb[iBlock].mbt.abtKeyB, mtKeys.amb[iBlock].mbt.abtKeyB, sizeof(mtDump.amb[iBlock].mbt.abtKeyB));
} }
} else { } else {
printf("!\nfailed to read trailer block 0x%02x\n", iBlock); //If the card was never unlocked and we get an error here, it's very likely that it's not a magic card.
bFailure = true; printf("!\nfailed to read trailer block 0x%02x\n", iBlock);
bFailure = true;
if (unlocked == false) {
printf("Supplied card unable to perform unlocked read / writes.");
}
} }
} else { } else {
// Make sure a earlier readout did not fail // Make sure a earlier readout did not fail
@ -532,7 +539,7 @@ main(int argc, const char *argv[])
} }
const char *command = argv[1]; const char *command = argv[1];
if (argc < 5) { if (argc < 4) {
print_usage(argv[0]); print_usage(argv[0]);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
@ -551,6 +558,10 @@ main(int argc, const char *argv[])
bFormatCard = (strcmp(command, "f") == 0); bFormatCard = (strcmp(command, "f") == 0);
bUseKeyA = tolower((int)((unsigned char) * (argv[2]))) == 'a'; bUseKeyA = tolower((int)((unsigned char) * (argv[2]))) == 'a';
bTolerateFailures = tolower((int)((unsigned char) * (argv[2]))) != (int)((unsigned char) * (argv[2])); bTolerateFailures = tolower((int)((unsigned char) * (argv[2]))) != (int)((unsigned char) * (argv[2]));
if (argv[3][0] != 'U' && argv[3][0] != 'u') {
argv[5] = argv[4];
argv[4] = argv[3];
}
bUseKeyFile = (argc > 5); bUseKeyFile = (argc > 5);
bForceKeyFile = ((argc > 6) && (strcmp((char *)argv[6], "f") == 0)); bForceKeyFile = ((argc > 6) && (strcmp((char *)argv[6], "f") == 0));
} }
@ -571,6 +582,7 @@ main(int argc, const char *argv[])
tag_uid[0], tag_uid[1], tag_uid[2], tag_uid[3]); tag_uid[0], tag_uid[1], tag_uid[2], tag_uid[3]);
} else { } else {
tag_uid = NULL; tag_uid = NULL;
argv[5] = argv[4];
} }
if (atAction == ACTION_USAGE) { if (atAction == ACTION_USAGE) {
@ -668,7 +680,7 @@ main(int argc, const char *argv[])
print_nfc_target(&nt, false); print_nfc_target(&nt, false);
// Guessing size // Guessing size
if ((nt.nti.nai.abtAtqa[1] & 0x02) == 0x02) if ((nt.nti.nai.abtAtqa[1] & 0x02) == 0x02 || nt.nti.nai.btSak == 0x18)
// 4K // 4K
uiBlocks = 0xff; uiBlocks = 0xff;
else if (nt.nti.nai.btSak == 0x09) else if (nt.nti.nai.btSak == 0x09)