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nfc-mfsetuid: allow to write complete Block0, instead of only UID

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Fixes #282
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Dario Carluccio 2015-04-30 14:45:05 +02:00 committed by Romuald Conty
parent 33ce39ff71
commit e96061e44b
1 changed files with 11 additions and 1 deletions
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12
examples/nfc-mfsetuid.c
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@ -10,6 +10,7 @@
* See AUTHORS file for a more comprehensive list of contributors. * See AUTHORS file for a more comprehensive list of contributors.
* Additional contributors of this file: * Additional contributors of this file:
* Copyright (C) 2011 Adam Laurie * Copyright (C) 2011 Adam Laurie
* Copyright (C) 2014 Dario Carluccio
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met: * modification, are permitted provided that the following conditions are met:
@ -140,12 +141,13 @@ transmit_bytes(const uint8_t *pbtTx, const size_t szTx)
static void static void
print_usage(char *argv[]) print_usage(char *argv[])
{ {
printf("Usage: %s [OPTIONS] [UID]\n", argv[0]); printf("Usage: %s [OPTIONS] [UID|BLOCK0]\n", argv[0]);
printf("Options:\n"); printf("Options:\n");
printf("\t-h\tHelp. Print this message.\n"); printf("\t-h\tHelp. Print this message.\n");
printf("\t-f\tFormat. Delete all data (set to 0xFF) and reset ACLs to default.\n"); printf("\t-f\tFormat. Delete all data (set to 0xFF) and reset ACLs to default.\n");
printf("\t-q\tQuiet mode. Suppress output of READER and CARD data (improves timing).\n"); printf("\t-q\tQuiet mode. Suppress output of READER and CARD data (improves timing).\n");
printf("\n\tSpecify UID (4 HEX bytes) to set UID, or leave blank for default '01234567'.\n"); printf("\n\tSpecify UID (4 HEX bytes) to set UID, or leave blank for default '01234567'.\n");
printf("\n\tSpecify BLOCK0 (16 HEX bytes) to set content of Block0. CRC (Byte 4) is recalculated an overwritten'.\n");
printf("\tThis utility can be used to recover cards that have been damaged by writing bad\n"); printf("\tThis utility can be used to recover cards that have been damaged by writing bad\n");
printf("\tdata (e.g. wrong BCC), thus making them non-selectable by most tools/readers.\n"); printf("\tdata (e.g. wrong BCC), thus making them non-selectable by most tools/readers.\n");
printf("\n\t*** Note: this utility only works with special Mifare 1K cards (Chinese clones).\n\n"); printf("\n\t*** Note: this utility only works with special Mifare 1K cards (Chinese clones).\n\n");
@ -177,6 +179,14 @@ main(int argc, char *argv[])
} }
abtData[4] = abtData[0] ^ abtData[1] ^ abtData[2] ^ abtData[3]; abtData[4] = abtData[0] ^ abtData[1] ^ abtData[2] ^ abtData[3];
iso14443a_crc_append(abtData, 16); iso14443a_crc_append(abtData, 16);
} else if (strlen(argv[arg]) == 32) {
for (i = 0 ; i < 16 ; ++i) {
memcpy(tmp, argv[arg] + i * 2, 2);
sscanf(tmp, "%02x", &c);
abtData[i] = (char) c;
}
abtData[4] = abtData[0] ^ abtData[1] ^ abtData[2] ^ abtData[3];
iso14443a_crc_append(abtData, 16);
} else { } else {
ERR("%s is not supported option.", argv[arg]); ERR("%s is not supported option.", argv[arg]);
print_usage(argv); print_usage(argv);