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[hf 14a sim] Preliminary MFP_WRITEPERSO sim support

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Very early WIP, just logs address and value.
This commit is contained in:
Aaron Tulino (Aaronjamt)
2026-03-18 13:05:34 -07:00
parent 367fd6f4c9
commit afcd2ed6cd
1 changed files with 43 additions and 0 deletions
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armsrc/iso14443a.c
+43
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@@ -2270,6 +2270,49 @@ void SimulateIso14443aTagEx(uint8_t tagType, uint16_t flags, uint8_t *useruid, u
EmSendCmd(cmd, sizeof(cmd));
p_response = NULL;
} else if (receivedCmd[0] == MFP_WRITEPERSO && len == 21 && (tagType == 15)) {
// cmd + 2 bytes block + value + 2 bytes crc
if (CheckCrc14A(receivedCmd, len)) {
uint16_t page = receivedCmd[1] | (receivedCmd[2] << 8);
if (page > 0x9005 || page < 0x9000) {
// send NACK 0x0 == invalid argument
EmSend4bit(CARD_NACK_IV);
} else {
// send ACK
EmSend4bit(CARD_ACK);
Dbprintf("MFP Perso Key | %04X | %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
page,
receivedCmd[3],
receivedCmd[4],
receivedCmd[5],
receivedCmd[6],
receivedCmd[7],
receivedCmd[8],
receivedCmd[9],
receivedCmd[10],
receivedCmd[11],
receivedCmd[12],
receivedCmd[13],
receivedCmd[14],
receivedCmd[15],
receivedCmd[16],
receivedCmd[17],
receivedCmd[18]
);
numReads++; // Increment number of times reader requested a block
if (exitAfterNReads > 0 && numReads == exitAfterNReads) {
finished = true;
}
}
} else {
// send NACK 0x1 == crc/parity error
EmSend4bit(CARD_NACK_PA);
}
p_response = NULL;
} else {
// clear old dynamic responses