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ADD: Implemented a "hf 14b write" function using the CmdHF14BCmdRaw method. The function can write to SRI512 and SRIX4K tags only. Be extremly cautious when writing to Block 0xFF

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This commit is contained in:
iceman1001 2014-10-30 15:28:45 +01:00
parent 5ea2c88515
commit 0222acfcf3
2 changed files with 62 additions and 0 deletions
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61
client/cmdhf14b.c
View file

@ -386,6 +386,66 @@ int CmdHF14BCmdRaw (const char *cmd) {
return 0;
}
int CmdHF14BWrite( const char *Cmd){
/*
* For SRIX4K blocks 00 - 7F
* hf 14b raw -c -p 09 $srix4kwblock $srix4kwdata
*
* For SR512 blocks 00 - 0F
* hf 14b raw -c -p 09 $sr512wblock $sr512wdata
*
* Special block FF = otp_lock_reg block.
* Data len 4 bytes-
*/
char cmdp = param_getchar(Cmd, 0);
uint8_t blockno = -1;
uint8_t data[4] = {0x00};
bool isSrix4k = true;
char str[20];
if (cmdp == 'h' || cmdp == 'H') {
PrintAndLog("Usage: hf 14b write <1|2> <BLOCK> <DATA>");
PrintAndLog("");
PrintAndLog(" sample: hf 14b write 1 127 11223344");
PrintAndLog(" sample: hf 14b write 1 255 11223344");
PrintAndLog(" sample: hf 14b write 2 15 11223344");
PrintAndLog(" sample: hf 14b write 2 255 11223344");
return 0;
}
if ( param_getchar(Cmd, 0) == '2' )
isSrix4k = false;
blockno = param_get8(Cmd, 1);
if ( isSrix4k ){
if ( blockno > 0x7f && blockno != 0xff ){
PrintAndLog("Block number out of range");
return 0;
}
} else {
if ( blockno > 0x0f && blockno != 0xff ){
PrintAndLog("Block number out of range");
return 0;
}
}
if (param_gethex(Cmd, 2, data, 8)) {
PrintAndLog("Data must include 8 HEX symbols");
return 0;
}
if ( blockno == 0xff)
PrintAndLog("Writing to special block %02X [ %s]", blockno, sprint_hex(data,4) );
else
PrintAndLog("Writing to block %02X [ %s]", blockno, sprint_hex(data,4) );
sprintf(str, "-c -p 09 %02x %02x%02x%02x%02x", blockno, data[0], data[1], data[2], data[3]);
CmdHF14BCmdRaw(str);
return 0;
}
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
@ -398,6 +458,7 @@ static command_t CommandTable[] =
{"sri512read", CmdSri512Read, 0, "Read contents of a SRI512 tag"},
{"srix4kread", CmdSrix4kRead, 0, "Read contents of a SRIX4K tag"},
{"raw", CmdHF14BCmdRaw, 0, "Send raw hex data to tag"},
{"write", CmdHF14BWrite, 0, "Write data to a SRI512 | SRIX4K tag"},
{NULL, NULL, 0, NULL}
};

1
client/cmdhf14b.h
View file

@ -21,5 +21,6 @@ int CmdHFSimlisten(const char *Cmd);
int CmdHF14BSnoop(const char *Cmd);
int CmdSri512Read(const char *Cmd);
int CmdSrix4kRead(const char *Cmd);
int CmdHF14BWrite( const char *cmd);
#endif