github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-14 18:48:13 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

ADD: analyse nuid - generates NUID 4byte from a UID 7byte. Mifare Classic Ev1 has this option as a activation sequences. This NUID is also used for authenticate (cuid), not the block0 data.

Browse source 
ref: http://www.gorferay.com/mifare-and-handling-of-uids/
This commit is contained in:
iceman1001 2017-03-10 09:48:36 +01:00
commit 905c55de2b
4 changed files with 71 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

68
client/cmdanalyse.c
View file

@ -22,7 +22,7 @@ int usage_analyse_lcr(void) {
PrintAndLog(" <bytes> bytes to calc missing XOR in a LCR");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" analyse lcr 04008064BA");
PrintAndLog(" analyse lcr 04008064BA");
PrintAndLog("expected output: Target (BA) requires final LRC XOR byte value: 5A");
return 0;
}
@ -38,7 +38,7 @@ int usage_analyse_checksum(void) {
PrintAndLog(" m <mask> bit mask to limit the outpuyt");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" analyse chksum b 137AF00A0A0D m FF");
PrintAndLog(" analyse chksum b 137AF00A0A0D m FF");
PrintAndLog("expected output: 0x61");
return 0;
}
@ -51,7 +51,7 @@ int usage_analyse_crc(void){
PrintAndLog(" <bytes> bytes to calc crc");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" analyse crc 137AF00A0A0D");
PrintAndLog(" analyse crc 137AF00A0A0D");
return 0;
}
int usage_analyse_hid(void){
@ -65,7 +65,19 @@ int usage_analyse_hid(void){
PrintAndLog(" <bytes> input bytes");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" analyse hid r 0123456789abcdef");
PrintAndLog(" analyse hid r 0123456789abcdef");
return 0;
}
int usage_analyse_nuid(void){
PrintAndLog("Generate 4byte NUID from 7byte UID");
PrintAndLog("");
PrintAndLog("Usage: analyse hid [h] <bytes>");
PrintAndLog("Options:");
PrintAndLog(" h This help");
PrintAndLog(" <bytes> input bytes (14 hexsymbols)");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" analyse nuid 11223344556677");
return 0;
}
@ -521,6 +533,53 @@ int CmdAnalyseHid(const char *Cmd){
return 0;
}
void generate4bNUID(uint8_t *uid, uint8_t *nuid){
uint16_t crc;
uint8_t first, second;
ComputeCrc14443(CRC_14443_A, uid, 3, &first, &second);
nuid[0] |= (second & 0xE0) | 0xF;
nuid[1] = first;
crc = first;
crc |= second << 8;
UpdateCrc14443(uid[3], &crc);
UpdateCrc14443(uid[4], &crc);
UpdateCrc14443(uid[5], &crc);
UpdateCrc14443(uid[6], &crc);
nuid[2] = (crc >> 8) & 0xFF ;
nuid[3] = crc & 0xFF;
}
int CmdAnalyseNuid(const char *Cmd){
uint8_t nuid[4] = {0};
uint8_t uid[7] = {0};
int len = 0;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) == 0|| cmdp == 'h' || cmdp == 'H') return usage_analyse_nuid();
/* selftest UID 040D681AB52281 -> NUID 8F430FEF */
if (cmdp == 't' || cmdp == 'T') {
memcpy(uid, "\x04\x0d\x68\x1a\xb5\x22\x81", 7);
generate4bNUID(uid, nuid);
if ( 0 == memcmp(nuid, "\x8f\x43\x0f\xef", 4))
printf("Selftest OK\n");
else
printf("Selftest Failed\n");
return 0;
}
param_gethex_ex(Cmd, 0, uid, &len);
if ( len%2 || len != 14) return usage_analyse_nuid();
generate4bNUID(uid, nuid);
printf("UID | %s \n", sprint_hex(uid, 7));
printf("NUID | %s \n", sprint_hex(nuid, 4));
return 0;
}
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"lcr", CmdAnalyseLCR, 1, "Generate final byte for XOR LRC"},
@ -531,6 +590,7 @@ static command_t CommandTable[] = {
{"lfsr", CmdAnalyseLfsr, 1, "LFSR tests"},
{"a", CmdAnalyseA, 1, "num bits test"},
{"hid", CmdAnalyseHid, 1, "Permute function from 'heart of darkness' paper"},
{"nuid", CmdAnalyseNuid, 1, "create NUID from 7byte UID"},
{NULL, NULL, 0, NULL}
};