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hf iclass encode - writes a credential 6,7,8,9

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iceman1001 2020-12-11 01:02:36 +01:00
commit 0c0cdab17d
1 changed files with 42 additions and 38 deletions
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46
client/src/cmdhficlass.c
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@ -3365,6 +3365,7 @@ static int CmdHFiClassEncode(const char *Cmd) {
uint8_t enc_key[16] = {0};
uint8_t *enckeyptr = NULL;
bool have_enc_key = false;
bool use_sc = false;
CLIGetHexWithReturn(ctx, 6, enc_key, &enc_key_len);
CLIParserFree(ctx);
@ -3387,9 +3388,9 @@ static int CmdHFiClassEncode(const char *Cmd) {
return PM3_EINVARG;
}
bool use_sc = IsCryptoHelperPresent(false);
if (have_enc_key == false && use_sc == false) {
if (have_enc_key == false) {
use_sc = IsCryptoHelperPresent(false);
if (use_sc == false) {
size_t keylen = 0;
int res = loadFile_safe(ICLASS_DECRYPTION_BIN, "", (void **)&enckeyptr, &keylen);
if (res != PM3_SUCCESS) {
@ -3400,14 +3401,20 @@ static int CmdHFiClassEncode(const char *Cmd) {
PrintAndLogEx(ERR, "Failed to load transport key from file");
return PM3_EINVARG;
}
memcpy(enc_key, enckeyptr, sizeof(enc_key));
free(enckeyptr);
}
}
uint8_t credential[] = {
0x03, 0x03, 0x03, 0x03, 0x00, 0x03, 0xE0, 0x17,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
uint8_t data[8];
memset(data, 0, sizeof(data));
BitstreamOut bout = {data, 0, 0 };
for (int i = 0; i < 64 - bin_len - 1; i++) {
@ -3427,34 +3434,31 @@ static int CmdHFiClassEncode(const char *Cmd) {
PrintAndLogEx(WARNING, "Ignoring '%c'", c);
}
}
memcpy(credential + 8, data, sizeof(data));
// encrypt with transport key
if (use_sc) {
Encrypt(data, data);
Encrypt(credential + 8, credential + 8);
Encrypt(credential + 16, credential + 16);
Encrypt(credential + 24, credential + 24);
} else {
iclass_encrypt_block_data(data, enc_key);
iclass_encrypt_block_data(credential + 8, enc_key);
iclass_encrypt_block_data(credential + 16, enc_key);
iclass_encrypt_block_data(credential + 24, enc_key);
}
PrintAndLogEx(SUCCESS, "encrypted block: " _YELLOW_("%s"), sprint_hex_inrow(data, sizeof(data)));
// write block 7
int isok = iclass_write_block(7, data, key, use_credit_key, elite, rawkey, false, false, auth);
int isok = PM3_SUCCESS;
// write
for (uint8_t i=0; i<4; i++) {
isok = iclass_write_block(6 + i, credential + (i*8), key, use_credit_key, elite, rawkey, false, false, auth);
switch (isok) {
case PM3_SUCCESS:
PrintAndLogEx(SUCCESS, "Write block 7/0x07 ( " _GREEN_("ok") " )");
PrintAndLogEx(SUCCESS, "Write block %d/0x0%x ( " _GREEN_("ok") " ) --> " _YELLOW_("%s"), 6 + i, 6 + i, sprint_hex_inrow(credential + (i*8), 8));
break;
default:
PrintAndLogEx(SUCCESS, "Write block 7/0x07 ( " _RED_("fail") " )");
PrintAndLogEx(SUCCESS, "Write block %d/0x0%x ( " _RED_("fail") " )", 6 + i, 6 + i);
break;
}
uint8_t block6[] = {0x03, 0x03, 0x03, 0x03, 0x00, 0x03, 0xE0, 0x17};
isok = iclass_write_block(6, block6, key, use_credit_key, elite, rawkey, false, false, auth);
switch (isok) {
case PM3_SUCCESS:
PrintAndLogEx(SUCCESS, "Write block 6/0x06 ( " _GREEN_("ok") " )");
break;
default:
PrintAndLogEx(SUCCESS, "Write block 6/0x06 ( " _RED_("fail") " )");
break;
}
return isok;
}