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ADD: 'hf 14a read' - detection if found Mifare Classic tag has a weak or hardend PRNG. Thanks to @doegox for implementing it in nfc-tools/mfoc Its a beauty :)

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This commit is contained in:
iceman1001 2017-06-26 21:45:22 +02:00
commit 4d18909596
5 changed files with 91 additions and 36 deletions
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74
client/cmdhf14a.c
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@ -214,9 +214,11 @@ int CmdHF14AReader(const char *Cmd) {
PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
PrintAndLog(" SAK : %02x [%d]", card.sak, resp.arg[0]);
bool isMifareClassic = true;
switch (card.sak) {
case 0x00:
isMifareClassic = false;
// ******** is card of the MFU type (UL/ULC/NTAG/ etc etc)
ul_switch_off_field();
@ -409,6 +411,14 @@ int CmdHF14AReader(const char *Cmd) {
// disconnect
SendCommand(&cDisconnect);
if (isMifareClassic) {
if ( detect_classic_prng() )
PrintAndLog("Prng detection: WEAK (darkside)");
else
PrintAndLog("Prng detection: HARDEND (hardnested)");
}
return select_status;
}
@ -450,15 +460,15 @@ int CmdHF14ACUIDs(const char *Cmd) {
// ## simulate iso14443a tag
// ## greg - added ability to specify tag UID
int CmdHF14ASim(const char *Cmd) {
bool errors = FALSE;
bool errors = false;
uint8_t flags = 0;
uint8_t tagtype = 1;
uint8_t cmdp = 0;
uint8_t uid[10] = {0,0,0,0,0,0,0,0,0,0};
int uidlen = 0;
bool useUIDfromEML = TRUE;
bool setEmulatorMem = FALSE;
bool verbose = FALSE;
bool useUIDfromEML = true;
bool setEmulatorMem = false;
bool verbose = false;
nonces_t data[1];
while(param_getchar(Cmd, cmdp) != 0x00) {
@ -471,7 +481,7 @@ int CmdHF14ASim(const char *Cmd) {
// Retrieve the tag type
tagtype = param_get8ex(Cmd, cmdp+1, 0, 10);
if (tagtype == 0)
errors = TRUE;
errors = true;
cmdp += 2;
break;
case 'u':
@ -482,17 +492,17 @@ int CmdHF14ASim(const char *Cmd) {
//case 20: flags |= FLAG_10B_UID_IN_DATA; break;
case 14: flags |= FLAG_7B_UID_IN_DATA; break;
case 8: flags |= FLAG_4B_UID_IN_DATA; break;
default: errors = TRUE; break;
default: errors = true; break;
}
if (!errors) {
PrintAndLog("Emulating ISO/IEC 14443 type A tag with %d byte UID (%s)", uidlen>>1, sprint_hex(uid, uidlen>>1));
useUIDfromEML = FALSE;
useUIDfromEML = false;
}
cmdp += 2;
break;
case 'v':
case 'V':
verbose = TRUE;
verbose = true;
cmdp++;
break;
case 'x':
@ -502,12 +512,12 @@ int CmdHF14ASim(const char *Cmd) {
break;
case 'e':
case 'E':
setEmulatorMem = TRUE;
setEmulatorMem = true;
cmdp++;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = TRUE;
errors = true;
break;
}
if(errors) break;
@ -541,32 +551,31 @@ int CmdHF14ASim(const char *Cmd) {
int CmdHF14ASniff(const char *Cmd) {
int param = 0;
uint8_t ctmp = param_getchar(Cmd, 0) ;
if (ctmp == 'h' || ctmp == 'H') return usage_hf_14a_sniff();
uint8_t ctmp;
for (int i = 0; i < 2; i++) {
ctmp = param_getchar(Cmd, i);
if (ctmp == 'h' || ctmp == 'H') return usage_hf_14a_sniff();
if (ctmp == 'c' || ctmp == 'C') param |= 0x01;
if (ctmp == 'r' || ctmp == 'R') param |= 0x02;
}
UsbCommand c = {CMD_SNOOP_ISO_14443a, {param, 0, 0}};
clearCommandBuffer();
SendCommand(&c);
return 0;
UsbCommand c = {CMD_SNOOP_ISO_14443a, {param, 0, 0}};
clearCommandBuffer();
SendCommand(&c);
return 0;
}
int CmdHF14ACmdRaw(const char *cmd) {
UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}};
bool reply=1;
bool crc = FALSE;
bool power = FALSE;
bool active = FALSE;
bool active_select = FALSE;
bool crc = false;
bool power = false;
bool active = false;
bool active_select = false;
uint16_t numbits=0;
bool bTimeout = FALSE;
bool bTimeout = false;
uint32_t timeout=0;
bool topazmode = FALSE;
bool topazmode = false;
char buf[5]="";
int i=0;
uint8_t data[USB_CMD_DATA_SIZE];
@ -586,19 +595,19 @@ int CmdHF14ACmdRaw(const char *cmd) {
case 'h':
return usage_hf_14a_raw();
case 'r':
reply = FALSE;
reply = false;
break;
case 'c':
crc = TRUE;
crc = true;
break;
case 'p':
power = TRUE;
power = true;
break;
case 'a':
active = TRUE;
active = true;
break;
case 's':
active_select = TRUE;
active_select = true;
break;
case 'b':
sscanf(cmd+i+2,"%d",&temp);
@ -608,7 +617,7 @@ int CmdHF14ACmdRaw(const char *cmd) {
i-=2;
break;
case 't':
bTimeout = TRUE;
bTimeout = true;
sscanf(cmd+i+2,"%d",&temp);
timeout = temp;
i+=3;
@ -616,7 +625,7 @@ int CmdHF14ACmdRaw(const char *cmd) {
i-=2;
break;
case 'T':
topazmode = TRUE;
topazmode = true;
break;
default:
return usage_hf_14a_raw();
@ -706,8 +715,7 @@ int CmdHF14ACmdRaw(const char *cmd) {
return 0;
}
static void waitCmd(uint8_t iSelect)
{
static void waitCmd(uint8_t iSelect) {
UsbCommand resp;
uint16_t len = 0;