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fixed some overflows when debug printing client side when emrtd dump/info

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This commit is contained in:
iceman1001 2023-12-25 15:25:05 +01:00
commit 5e06656580
1 changed files with 36 additions and 12 deletions
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48
client/src/cmdhfemrtd.c
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@ -49,6 +49,8 @@
// App IDs
#define EMRTD_AID_MRTD {0xA0, 0x00, 0x00, 0x02, 0x47, 0x10, 0x01}
#define EMRTD_KMAC_LEN 16
// DESKey Types
static const uint8_t KENC_type[4] = {0x00, 0x00, 0x00, 0x01};
static const uint8_t KMAC_type[4] = {0x00, 0x00, 0x00, 0x02};
@ -511,7 +513,7 @@ static bool _emrtd_secure_read_binary(uint8_t *kmac, uint8_t *ssc, int offset, i
uint8_t data[21] = { 0x00 };
uint8_t temp[8] = {0x0c, 0xb0};
PrintAndLogEx(DEBUG, "kmac: %s", sprint_hex_inrow(kmac, 20));
PrintAndLogEx(DEBUG, "kmac: %s", sprint_hex_inrow(kmac, EMRTD_KMAC_LEN));
// Set p1 and p2
temp[2] = (uint8_t)(offset >> 8);
@ -531,15 +533,15 @@ static bool _emrtd_secure_read_binary(uint8_t *kmac, uint8_t *ssc, int offset, i
uint8_t n[19] = { 0x00 };
memcpy(n, ssc, 8);
memcpy(n + 8, m, 11);
PrintAndLogEx(DEBUG, "n: %s", sprint_hex_inrow(n, 19));
PrintAndLogEx(DEBUG, "n: %s", sprint_hex_inrow(n, sizeof(n)));
uint8_t cc[8] = { 0x00 };
retail_mac(kmac, n, 19, cc);
PrintAndLogEx(DEBUG, "cc: %s", sprint_hex_inrow(cc, 8));
PrintAndLogEx(DEBUG, "cc: %s", sprint_hex_inrow(cc, sizeof(cc)));
uint8_t do8e[10] = {0x8E, 0x08};
memcpy(do8e + 2, cc, 8);
PrintAndLogEx(DEBUG, "do8e: %s", sprint_hex_inrow(do8e, 10));
PrintAndLogEx(DEBUG, "do8e: %s", sprint_hex_inrow(do8e, sizeof(do8e)));
int lc = 13;
PrintAndLogEx(DEBUG, "lc: %i", lc);
@ -1021,8 +1023,8 @@ int dumpHF_EMRTD(char *documentnumber, char *dob, char *expiry, bool BAC_availab
uint8_t response[EMRTD_MAX_FILE_SIZE] = { 0x00 };
size_t resplen = 0;
uint8_t ssc[8] = { 0x00 };
uint8_t ks_enc[16] = { 0x00 };
uint8_t ks_mac[16] = { 0x00 };
uint8_t ks_enc[EMRTD_KMAC_LEN] = { 0x00 };
uint8_t ks_mac[EMRTD_KMAC_LEN] = { 0x00 };
bool BAC = false;
// Select the eMRTD
@ -1282,18 +1284,40 @@ static void emrtd_print_issuance(char *data, bool ascii) {
PrintAndLogEx(SUCCESS, "Date of issue.........: " _YELLOW_("%s"), final_date);
}
static void emrtd_print_personalization_timestamp(uint8_t *data) {
static void emrtd_print_personalization_timestamp(uint8_t *data, size_t datalen) {
if (datalen < 7 ) {
return;
}
char str_date[0x0F] = { 0x00 };
strncpy(str_date, sprint_hex_inrow(data, 0x07), sizeof(str_date) - 1);
char final_date[20] = { 0x00 };
snprintf(final_date, sizeof(final_date), "%.4s-%.2s-%.2s %.2s:%.2s:%.2s", str_date, str_date + 4, str_date + 6, str_date + 8, str_date + 10, str_date + 12);
snprintf(final_date, sizeof(final_date), "%.4s-%.2s-%.2s %.2s:%.2s:%.2s"
, str_date
, str_date + 4
, str_date + 6
, str_date + 8
, str_date + 10
, str_date + 12
);
PrintAndLogEx(SUCCESS, "Personalization at....: " _YELLOW_("%s"), final_date);
}
static void emrtd_print_unknown_timestamp_5f85(uint8_t *data) {
static void emrtd_print_unknown_timestamp_5f85(uint8_t *data, size_t datalen) {
if (datalen < 14) {
return;
}
char final_date[20] = { 0x00 };
snprintf(final_date, sizeof(final_date), "%.4s-%.2s-%.2s %.2s:%.2s:%.2s", data, data + 4, data + 6, data + 8, data + 10, data + 12);
snprintf(final_date, sizeof(final_date), "%.4s-%.2s-%.2s %.2s:%.2s:%.2s"
, data
, data + 4
, data + 6
, data + 8
, data + 10
, data + 12
);
PrintAndLogEx(SUCCESS, "Unknown timestamp 5F85: " _YELLOW_("%s"), final_date);
PrintAndLogEx(HINT, "This is very likely the personalization timestamp, but it is using an undocumented tag.");
@ -1588,13 +1612,13 @@ static int emrtd_print_ef_dg12_info(uint8_t *data, size_t datalen) {
saveFile("BackOfDocument", tagdata[0] == 0xFF ? ".jpg" : ".jp2", tagdata, tagdatalen);
break;
case 0x55:
emrtd_print_personalization_timestamp(tagdata);
emrtd_print_personalization_timestamp(tagdata, tagdatalen);
break;
case 0x56:
PrintAndLogEx(SUCCESS, "Serial of Personalization System: " _YELLOW_("%.*s"), (int)tagdatalen, tagdata);
break;
case 0x85:
emrtd_print_unknown_timestamp_5f85(tagdata);
emrtd_print_unknown_timestamp_5f85(tagdata, tagdatalen);
break;
default:
PrintAndLogEx(SUCCESS, "Unknown Field %02X%02X....: %s", taglist[i], taglist[i + 1], sprint_hex_inrow(tagdata, tagdatalen));