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emrtd: Get file list from ef_com (but not parse yet)

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Ave 2020-12-14 01:30:11 +03:00
parent d5d5cc1fe6
commit a85e8a40d4
1 changed files with 38 additions and 96 deletions
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134
client/src/cmdhfemrtd.c
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@ -78,7 +78,7 @@ static bool exchange_commands(const char *cmd, uint8_t *dataout, int *dataoutlen
PrintAndLogEx(DEBUG, "Sending: %s", cmd);
uint8_t aCMD[500];
uint8_t aCMD[PM3_CMD_DATA_SIZE];
int aCMD_n = 0;
param_gethex_to_eol(cmd, 0, aCMD, sizeof(aCMD), &aCMD_n);
int res;
@ -404,7 +404,7 @@ static bool check_cc(uint8_t *ssc, uint8_t *key, uint8_t *rapdu, int rapdulength
}
static void _convert_filename(const char *file, uint8_t *dataout) {
char temp[3];
char temp[3] = {0x00};
memcpy(temp, file, 2);
dataout[0] = (int)strtol(temp, NULL, 16);
memcpy(temp, file + 2, 2);
@ -592,6 +592,34 @@ static int secure_read_file(uint8_t *kenc, uint8_t *kmac, uint8_t *ssc, uint8_t
return true;
}
static bool ef_com_get_file_list(uint8_t *datain, int *datainlen, uint8_t *dataout, int *dataoutlen) {
int offset = 2;
int elementidlen = 0;
int elementlen = 0;
while (offset < *datainlen) {
PrintAndLogEx(DEBUG, "ef_com_get_file_list, offset: %i, data: %X", offset, *(datain + offset));
// Determine element ID length to set as offset on asn1datalength
if (*(datain + offset) == 0x5f) {
elementidlen = 2;
} else {
elementidlen = 1;
}
// Get the length of the element
elementlen = asn1datalength(datain + offset, *datainlen - offset, elementidlen);
// If the element is what we're looking for, get the data and return true
if (*(datain + offset) == 0x5c) {
*dataoutlen = elementlen;
memcpy(dataout, datain + offset + elementidlen + 1, elementlen);
return true;
}
offset += elementidlen + elementlen + 1;
}
// Return false if we can't find the relevant element
return false;
}
int dumpHF_EMRTD(char *documentnumber, char *dob, char *expiry) {
uint8_t response[25000];
uint8_t rnd_ic[8];
@ -763,7 +791,7 @@ int dumpHF_EMRTD(char *documentnumber, char *dob, char *expiry) {
// Select EF_COM
if (secure_select_file(ks_enc, ks_mac, ssc, EF_COM, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to secure select EF_COM, crypto checksum check failed.");
PrintAndLogEx(ERR, "Failed to secure select EF_COM.");
DropField();
return PM3_ESOFT;
}
@ -775,104 +803,18 @@ int dumpHF_EMRTD(char *documentnumber, char *dob, char *expiry) {
}
PrintAndLogEx(INFO, "Read EF_COM, len: %i.", resplen);
PrintAndLogEx(DEBUG, "Contents (may be incomplete over 2k chars): %s", sprint_hex_inrow(response, resplen));
saveFile("EF_COM", ".BIN", response, resplen);
// saveFile("EF_COM", ".BIN", response, resplen);
// TODO: Don't read a hardcoded list of files, reduce code repetition
// Select EF_DG1
if (secure_select_file(ks_enc, ks_mac, ssc, EF_DG1, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to secure select EF_DG1, crypto checksum check failed.");
uint8_t filelist[50];
int filelistlen = 0;
if (ef_com_get_file_list(response, &resplen, filelist, &filelistlen) == false) {
PrintAndLogEx(ERR, "Failed to read file list from EF_COM.");
DropField();
return PM3_ESOFT;
}
if (secure_read_file(ks_enc, ks_mac, ssc, response, &resplen, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to read EF_DG1.");
DropField();
return PM3_ESOFT;
}
PrintAndLogEx(INFO, "Read EF_DG1, len: %i.", resplen);
PrintAndLogEx(DEBUG, "Contents (may be incomplete over 2k chars): %s", sprint_hex_inrow(response, resplen));
saveFile("EF_DG1", ".BIN", response, resplen);
// Select EF_DG2
if (secure_select_file(ks_enc, ks_mac, ssc, EF_DG2, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to secure select EF_DG2, crypto checksum check failed.");
DropField();
return PM3_ESOFT;
}
if (secure_read_file(ks_enc, ks_mac, ssc, response, &resplen, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to read EF_DG2.");
DropField();
return PM3_ESOFT;
}
PrintAndLogEx(INFO, "Read EF_DG2, len: %i.", resplen);
PrintAndLogEx(DEBUG, "Contents (may be incomplete over 2k chars): %s", sprint_hex_inrow(response, resplen));
saveFile("EF_DG2", ".BIN", response, resplen);
// Select EF_SOD
if (secure_select_file(ks_enc, ks_mac, ssc, EF_SOD, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to secure select EF_SOD, crypto checksum check failed.");
DropField();
return PM3_ESOFT;
}
if (secure_read_file(ks_enc, ks_mac, ssc, response, &resplen, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to read EF_SOD.");
DropField();
return PM3_ESOFT;
}
PrintAndLogEx(INFO, "Read EF_SOD, len: %i.", resplen);
PrintAndLogEx(DEBUG, "Contents (may be incomplete over 2k chars): %s", sprint_hex_inrow(response, resplen));
saveFile("EF_SOD", ".BIN", response, resplen);
// Select EF_DG11
if (secure_select_file(ks_enc, ks_mac, ssc, EF_DG11, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to secure select EF_DG11, crypto checksum check failed.");
DropField();
return PM3_ESOFT;
}
if (secure_read_file(ks_enc, ks_mac, ssc, response, &resplen, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to read EF_DG11.");
DropField();
return PM3_ESOFT;
}
PrintAndLogEx(INFO, "Read EF_DG11, len: %i.", resplen);
PrintAndLogEx(DEBUG, "Contents (may be incomplete over 2k chars): %s", sprint_hex_inrow(response, resplen));
saveFile("EF_DG11", ".BIN", response, resplen);
// Select EF_DG12
if (secure_select_file(ks_enc, ks_mac, ssc, EF_DG12, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to secure select EF_DG12, crypto checksum check failed.");
DropField();
return PM3_ESOFT;
}
if (secure_read_file(ks_enc, ks_mac, ssc, response, &resplen, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to read EF_DG12.");
DropField();
return PM3_ESOFT;
}
PrintAndLogEx(INFO, "Read EF_DG12, len: %i.", resplen);
PrintAndLogEx(DEBUG, "Contents (may be incomplete over 2k chars): %s", sprint_hex_inrow(response, resplen));
saveFile("EF_DG12", ".BIN", response, resplen);
// Select EF_DG14
if (secure_select_file(ks_enc, ks_mac, ssc, EF_DG14, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to secure select EF_DG14, crypto checksum check failed.");
DropField();
return PM3_ESOFT;
}
if (secure_read_file(ks_enc, ks_mac, ssc, response, &resplen, use_14b) == false) {
PrintAndLogEx(ERR, "Failed to read EF_DG14.");
DropField();
return PM3_ESOFT;
}
PrintAndLogEx(INFO, "Read EF_DG14, len: %i.", resplen);
PrintAndLogEx(DEBUG, "Contents (may be incomplete over 2k chars): %s", sprint_hex_inrow(response, resplen));
saveFile("EF_DG14", ".BIN", response, resplen);
PrintAndLogEx(DEBUG, "File List: %s", sprint_hex_inrow(filelist, filelistlen));
DropField();
return PM3_SUCCESS;