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proxmark3/client/emv/cmdemv.c
Oleg Moiseenko 0b6efd01ec Emv scan via contact interface (#789) 
* share getATR from smartcard.h/c
* remove duplicates in tlv.h and add get_uint_8
* check ATS/ATR length
2019-02-21 22:02:22 +01:00

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//-----------------------------------------------------------------------------
// Copyright (C) 2017, 2018 Merlok
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// EMV commands
//-----------------------------------------------------------------------------
#include "cmdemv.h"
#include <ctype.h>
#include <string.h>
#include "proxmark3.h"
#include "cmdparser.h"
#include "ui.h"
#include "util.h"
#include "mifare.h"
#include "emvjson.h"
#include "emv_pki.h"
#include "emvcore.h"
#include "test/cryptotest.h"
#include "cliparser/cliparser.h"
#include "jansson.h"
#include "emv_roca.h"
#include "pcsc.h"
#include "apduinfo.h"
#include "dol.h"
#include "emv_tags.h"
#include "cmdhf14a.h"
#include "cmdsmartcard.h"
#define TLV_ADD(tag, value)( tlvdb_change_or_add_node(tlvRoot, tag, sizeof(value) - 1, (const unsigned char *)value) )
void ParamLoadDefaults(struct tlvdb *tlvRoot) {
//9F02:(Amount, authorized (Numeric)) len:6
TLV_ADD(0x9F02, "\x00\x00\x00\x00\x01\x00");
//9F1A:(Terminal Country Code) len:2
TLV_ADD(0x9F1A, "ru");
//5F2A:(Transaction Currency Code) len:2
// USD 840, EUR 978, RUR 810, RUB 643, RUR 810(old), UAH 980, AZN 031, n/a 999
TLV_ADD(0x5F2A, "\x09\x80");
//9A:(Transaction Date) len:3
TLV_ADD(0x9A, "\x00\x00\x00");
//9C:(Transaction Type) len:1 | 00 => Goods and service #01 => Cash
TLV_ADD(0x9C, "\x00");
// 9F37 Unpredictable Number len:4
TLV_ADD(0x9F37, "\x01\x02\x03\x04");
// 9F6A Unpredictable Number (MSD for UDOL) len:4
TLV_ADD(0x9F6A, "\x01\x02\x03\x04");
//9F66:(Terminal Transaction Qualifiers (TTQ)) len:4
TLV_ADD(0x9F66, "\x26\x00\x00\x00"); // qVSDC
//95:(Terminal Verification Results) len:5
// all OK TVR
TLV_ADD(0x95, "\x00\x00\x00\x00\x00");
}
void PrintChannel(EMVCommandChannel channel) {
switch(channel) {
case ECC_CONTACTLESS:
PrintAndLogEx(INFO, "Channel: CONTACTLESS");
break;
case ECC_CONTACT:
PrintAndLogEx(INFO, "Channel: CONTACT, using %s", getAlternativeSmartcardReader());
break;
}
}
int CmdEMVSelect(const char *cmd) {
uint8_t data[APDU_DATA_LEN] = {0};
int datalen = 0;
CLIParserInit("emv select",
"Executes select applet command",
"Usage:\n\temv select -s a00000000101 -> select card, select applet\n\temv select -st a00000000101 -> select card, select applet, show result in TLV\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("sS", "select", "activate field and select card"),
arg_lit0("kK", "keep", "keep field for next command"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("tT", "tlv", "TLV decode results"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_strx0(NULL, NULL, "<HEX applet AID>", NULL),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool activateField = arg_get_lit(1);
bool leaveSignalON = arg_get_lit(2);
bool APDULogging = arg_get_lit(3);
bool decodeTLV = arg_get_lit(4);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(5))
channel = ECC_CONTACT;
PrintChannel(channel);
CLIGetHexWithReturn(6, data, &datalen);
#else
CLIGetHexWithReturn(5, data, &datalen);
#endif
CLIParserFree();
SetAPDULogging(APDULogging);
// exec
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVSelect(channel, activateField, leaveSignalON, data, datalen, buf, sizeof(buf), &len, &sw, NULL);
if (sw)
PrintAndLogEx(INFO, "APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
return 0;
}
int CmdEMVSearch(const char *cmd) {
CLIParserInit("emv search",
"Tries to select all applets from applet list:\n",
"Usage:\n\temv search -s -> select card and search\n\temv search -st -> select card, search and show result in TLV\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("sS", "select", "activate field and select card"),
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("tT", "tlv", "TLV decode results of selected applets"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool activateField = arg_get_lit(1);
bool leaveSignalON = arg_get_lit(2);
bool APDULogging = arg_get_lit(3);
bool decodeTLV = arg_get_lit(4);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(5))
channel = ECC_CONTACT;
#endif
PrintChannel(channel);
CLIParserFree();
SetAPDULogging(APDULogging);
struct tlvdb *t = NULL;
const char *al = "Applets list";
t = tlvdb_fixed(1, strlen(al), (const unsigned char *)al);
if (EMVSearch(channel, activateField, leaveSignalON, decodeTLV, t)) {
tlvdb_free(t);
return 2;
}
PrintAndLogEx(SUCCESS, "Search completed.");
// print list here
if (!decodeTLV) {
TLVPrintAIDlistFromSelectTLV(t);
}
tlvdb_free(t);
return 0;
}
int CmdEMVPPSE(const char *cmd) {
CLIParserInit("emv pse",
"Executes PSE/PPSE select command. It returns list of applet on the card:\n",
"Usage:\n\temv pse -s1 -> select, get pse\n\temv pse -st2 -> select, get ppse, show result in TLV\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("sS", "select", "activate field and select card"),
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("1", "pse", "pse (1PAY.SYS.DDF01) mode"),
arg_lit0("2", "ppse", "ppse (2PAY.SYS.DDF01) mode (default mode)"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("tT", "tlv", "TLV decode results of selected applets"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool activateField = arg_get_lit(1);
bool leaveSignalON = arg_get_lit(2);
uint8_t PSENum = 2;
if (arg_get_lit(3))
PSENum = 1;
if (arg_get_lit(4))
PSENum = 2;
bool APDULogging = arg_get_lit(5);
bool decodeTLV = arg_get_lit(6);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(7))
channel = ECC_CONTACT;
#endif
PrintChannel(channel);
CLIParserFree();
SetAPDULogging(APDULogging);
// exec
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVSelectPSE(channel, activateField, leaveSignalON, PSENum, buf, sizeof(buf), &len, &sw);
if (sw)
PrintAndLogEx(INFO, "APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
return 0;
}
int CmdEMVGPO(const char *cmd) {
uint8_t data[APDU_RESPONSE_LEN] = {0};
int datalen = 0;
CLIParserInit("emv gpo",
"Executes Get Processing Options command. It returns data in TLV format (0x77 - format2) or plain format (0x80 - format1).\nNeeds a EMV applet to be selected.",
"Usage:\n\temv gpo -k -> execute GPO\n"
"\temv gpo -t 01020304 -> execute GPO with 4-byte PDOL data, show result in TLV\n"
"\temv gpo -pmt 9F 37 04 -> load params from file, make PDOL data from PDOL, execute GPO with PDOL, show result in TLV\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("pP", "params", "load parameters from `emv/defparams.json` file for PDOLdata making from PDOL and parameters"),
arg_lit0("mM", "make", "make PDOLdata from PDOL (tag 9F38) and parameters (by default uses default parameters)"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("tT", "tlv", "TLV decode results of selected applets"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_strx0(NULL, NULL, "<HEX PDOLdata/PDOL>", NULL),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool leaveSignalON = arg_get_lit(1);
bool paramsLoadFromFile = arg_get_lit(2);
bool dataMakeFromPDOL = arg_get_lit(3);
bool APDULogging = arg_get_lit(4);
bool decodeTLV = arg_get_lit(5);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(6))
channel = ECC_CONTACT;
CLIGetHexWithReturn(7, data, &datalen);
#else
CLIGetHexWithReturn(6, data, &datalen);
#endif
PrintChannel(channel);
CLIParserFree();
SetAPDULogging(APDULogging);
// Init TLV tree
const char *alr = "Root terminal TLV tree";
struct tlvdb *tlvRoot = tlvdb_fixed(1, strlen(alr), (const unsigned char *)alr);
// calc PDOL
struct tlv *pdol_data_tlv = NULL;
struct tlv data_tlv = {
.tag = 0x83,
.len = datalen,
.value = (uint8_t *)data,
};
if (dataMakeFromPDOL) {
ParamLoadDefaults(tlvRoot);
if (paramsLoadFromFile) {
PrintAndLogEx(INFO, "Params loading from file...");
ParamLoadFromJson(tlvRoot);
};
pdol_data_tlv = dol_process((const struct tlv *)tlvdb_external(0x9f38, datalen, data), tlvRoot, 0x83);
if (!pdol_data_tlv){
PrintAndLogEx(ERR, "Can't create PDOL TLV.");
tlvdb_free(tlvRoot);
return 4;
}
} else {
if (paramsLoadFromFile) {
PrintAndLogEx(WARNING, "Don't need to load parameters. Sending plain PDOL data...");
}
pdol_data_tlv = &data_tlv;
}
size_t pdol_data_tlv_data_len = 0;
unsigned char *pdol_data_tlv_data = tlv_encode(pdol_data_tlv, &pdol_data_tlv_data_len);
if (!pdol_data_tlv_data) {
PrintAndLogEx(ERR, "Can't create PDOL data.");
tlvdb_free(tlvRoot);
return 4;
}
PrintAndLogEx(INFO, "PDOL data[%d]: %s", pdol_data_tlv_data_len, sprint_hex(pdol_data_tlv_data, pdol_data_tlv_data_len));
// exec
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVGPO(channel, leaveSignalON, pdol_data_tlv_data, pdol_data_tlv_data_len, buf, sizeof(buf), &len, &sw, tlvRoot);
if (pdol_data_tlv != &data_tlv)
free(pdol_data_tlv);
tlvdb_free(tlvRoot);
if (sw)
PrintAndLogEx(INFO, "APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
return 0;
}
int CmdEMVReadRecord(const char *cmd) {
uint8_t data[APDU_RESPONSE_LEN] = {0};
int datalen = 0;
CLIParserInit("emv readrec",
"Executes Read Record command. It returns data in TLV format.\nNeeds a bank applet to be selected and sometimes needs GPO to be executed.",
"Usage:\n\temv readrec -k 0101 -> read file SFI=01, SFIrec=01\n\temv readrec -kt 0201-> read file 0201 and show result in TLV\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("tT", "tlv", "TLV decode results of selected applets"),
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
arg_strx1(NULL, NULL, "<SFI 1byte HEX><SFIrecord 1byte HEX>", NULL),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool leaveSignalON = arg_get_lit(1);
bool APDULogging = arg_get_lit(2);
bool decodeTLV = arg_get_lit(3);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(4))
channel = ECC_CONTACT;
CLIGetHexWithReturn(5, data, &datalen);
#else
CLIGetHexWithReturn(4, data, &datalen);
#endif
PrintChannel(channel);
CLIParserFree();
if (datalen != 2) {
PrintAndLogEx(ERR, "Command needs to have 2 bytes of data");
return 1;
}
SetAPDULogging(APDULogging);
// exec
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVReadRecord(channel, leaveSignalON, data[0], data[1], buf, sizeof(buf), &len, &sw, NULL);
if (sw)
PrintAndLogEx(INFO, "APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
return 0;
}
int CmdEMVAC(const char *cmd) {
uint8_t data[APDU_RESPONSE_LEN] = {0};
int datalen = 0;
CLIParserInit("emv genac",
"Generate Application Cryptogram command. It returns data in TLV format .\nNeeds a EMV applet to be selected and GPO to be executed.",
"Usage:\n\temv genac -k 0102 -> generate AC with 2-byte CDOLdata and keep field ON after command\n"
"\temv genac -t 01020304 -> generate AC with 4-byte CDOL data, show result in TLV\n"
"\temv genac -Daac 01020304 -> generate AC with 4-byte CDOL data and terminal decision 'declined'\n"
"\temv genac -pmt 9F 37 04 -> load params from file, make CDOL data from CDOL, generate AC with CDOL, show result in TLV");
void* argtable[] = {
arg_param_begin,
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("cC", "cda", "executes CDA transaction. Needs to get SDAD in results."),
arg_str0("dD", "decision", "<aac|tc|arqc>", "Terminal decision. aac - declined, tc - approved, arqc - online authorisation requested"),
arg_lit0("pP", "params", "load parameters from `emv/defparams.json` file for CDOLdata making from CDOL and parameters"),
arg_lit0("mM", "make", "make CDOLdata from CDOL (tag 8C and 8D) and parameters (by default uses default parameters)"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("tT", "tlv", "TLV decode results of selected applets"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_strx1(NULL, NULL, "<HEX CDOLdata/CDOL>", NULL),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, false);
bool leaveSignalON = arg_get_lit(1);
bool trTypeCDA = arg_get_lit(2);
uint8_t termDecision = 0xff;
if (arg_get_str_len(3)) {
if (!strncmp(arg_get_str(3)->sval[0], "aac", 4))
termDecision = EMVAC_AAC;
if (!strncmp(arg_get_str(3)->sval[0], "tc", 4))
termDecision = EMVAC_TC;
if (!strncmp(arg_get_str(3)->sval[0], "arqc", 4))
termDecision = EMVAC_ARQC;
if (termDecision == 0xff) {
PrintAndLog("ERROR: can't find terminal decision '%s'", arg_get_str(3)->sval[0]);
return 1;
}
} else {
termDecision = EMVAC_TC;
}
if (trTypeCDA)
termDecision = termDecision | EMVAC_CDAREQ;
bool paramsLoadFromFile = arg_get_lit(4);
bool dataMakeFromCDOL = arg_get_lit(5);
bool APDULogging = arg_get_lit(6);
bool decodeTLV = arg_get_lit(7);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(8))
channel = ECC_CONTACT;
CLIGetHexWithReturn(9, data, &datalen);
#else
CLIGetHexWithReturn(8, data, &datalen);
#endif
PrintChannel(channel);
CLIParserFree();
SetAPDULogging(APDULogging);
// Init TLV tree
const char *alr = "Root terminal TLV tree";
struct tlvdb *tlvRoot = tlvdb_fixed(1, strlen(alr), (const unsigned char *)alr);
// calc CDOL
struct tlv *cdol_data_tlv = NULL;
struct tlv data_tlv = {
.tag = 0x01,
.len = datalen,
.value = (uint8_t *)data,
};
if (dataMakeFromCDOL) {
ParamLoadDefaults(tlvRoot);
if (paramsLoadFromFile) {
PrintAndLogEx(INFO, "Params loading from file...");
ParamLoadFromJson(tlvRoot);
};
cdol_data_tlv = dol_process((const struct tlv *)tlvdb_external(0x8c, datalen, data), tlvRoot, 0x01); // 0x01 - dummy tag
if (!cdol_data_tlv){
PrintAndLogEx(ERR, "Can't create CDOL TLV.");
tlvdb_free(tlvRoot);
return 4;
}
} else {
if (paramsLoadFromFile) {
PrintAndLogEx(WARNING, "Don't need to load parameters. Sending plain CDOL data...");
}
cdol_data_tlv = &data_tlv;
}
PrintAndLogEx(INFO, "CDOL data[%d]: %s", cdol_data_tlv->len, sprint_hex(cdol_data_tlv->value, cdol_data_tlv->len));
// exec
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVAC(channel, leaveSignalON, termDecision, (uint8_t *)cdol_data_tlv->value, cdol_data_tlv->len, buf, sizeof(buf), &len, &sw, tlvRoot);
if (cdol_data_tlv != &data_tlv)
free(cdol_data_tlv);
tlvdb_free(tlvRoot);
if (sw)
PrintAndLogEx(INFO, "APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
return 0;
}
int CmdEMVGenerateChallenge(const char *cmd) {
CLIParserInit("emv challenge",
"Executes Generate Challenge command. It returns 4 or 8-byte random number from card.\nNeeds a EMV applet to be selected and GPO to be executed.",
"Usage:\n\temv challenge -> get challenge\n\temv challenge -k -> get challenge, keep fileld ON\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool leaveSignalON = arg_get_lit(1);
bool APDULogging = arg_get_lit(2);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(3))
channel = ECC_CONTACT;
#endif
PrintChannel(channel);
CLIParserFree();
SetAPDULogging(APDULogging);
// exec
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVGenerateChallenge(channel, leaveSignalON, buf, sizeof(buf), &len, &sw, NULL);
if (sw)
PrintAndLogEx(INFO, "APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
PrintAndLogEx(SUCCESS, "Challenge: %s", sprint_hex(buf, len));
if (len != 4 && len != 8)
PrintAndLogEx(WARNING, "Length of challenge must be 4 or 8, but it %d", len);
return 0;
}
int CmdEMVInternalAuthenticate(const char *cmd) {
uint8_t data[APDU_RESPONSE_LEN] = {0};
int datalen = 0;
CLIParserInit("emv intauth",
"Generate Internal Authenticate command. Usually needs 4-byte random number. It returns data in TLV format .\n"
"Needs a EMV applet to be selected and GPO to be executed.",
"Usage:\n"
"\temv intauth -k 01020304 -> execute Internal Authenticate with 4-byte DDOLdata and keep field ON after command\n"
"\temv intauth -t 01020304 -> execute Internal Authenticate with 4-byte DDOL data, show result in TLV\n"
"\temv intauth -pmt 9F 37 04 -> load params from file, make DDOL data from DDOL, Internal Authenticate with DDOL, show result in TLV");
void* argtable[] = {
arg_param_begin,
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("pP", "params", "load parameters from `emv/defparams.json` file for DDOLdata making from DDOL and parameters"),
arg_lit0("mM", "make", "make DDOLdata from DDOL (tag 9F49) and parameters (by default uses default parameters)"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("tT", "tlv", "TLV decode results of selected applets"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_strx1(NULL, NULL, "<HEX DDOLdata/DDOL>", NULL),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, false);
bool leaveSignalON = arg_get_lit(1);
bool paramsLoadFromFile = arg_get_lit(2);
bool dataMakeFromDDOL = arg_get_lit(3);
bool APDULogging = arg_get_lit(4);
bool decodeTLV = arg_get_lit(5);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(6))
channel = ECC_CONTACT;
CLIGetHexWithReturn(7, data, &datalen);
#else
CLIGetHexWithReturn(6, data, &datalen);
#endif
PrintChannel(channel);
CLIParserFree();
SetAPDULogging(APDULogging);
// Init TLV tree
const char *alr = "Root terminal TLV tree";
struct tlvdb *tlvRoot = tlvdb_fixed(1, strlen(alr), (const unsigned char *)alr);
// calc DDOL
struct tlv *ddol_data_tlv = NULL;
struct tlv data_tlv = {
.tag = 0x01,
.len = datalen,
.value = (uint8_t *)data,
};
if (dataMakeFromDDOL) {
ParamLoadDefaults(tlvRoot);
if (paramsLoadFromFile) {
PrintAndLogEx(INFO, "Params loading from file...");
ParamLoadFromJson(tlvRoot);
};
ddol_data_tlv = dol_process((const struct tlv *)tlvdb_external(0x9f49, datalen, data), tlvRoot, 0x01); // 0x01 - dummy tag
if (!ddol_data_tlv){
PrintAndLogEx(ERR, "Can't create DDOL TLV.");
tlvdb_free(tlvRoot);
return 4;
}
} else {
if (paramsLoadFromFile) {
PrintAndLogEx(WARNING, "Don't need to load parameters. Sending plain DDOL data...");
}
ddol_data_tlv = &data_tlv;
}
PrintAndLogEx(INFO, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
// exec
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVInternalAuthenticate(channel, leaveSignalON, data, datalen, buf, sizeof(buf), &len, &sw, NULL);
if (ddol_data_tlv != &data_tlv)
free(ddol_data_tlv);
tlvdb_free(tlvRoot);
if (sw)
PrintAndLogEx(INFO, "APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
return 0;
}
#define dreturn(n) {free(pdol_data_tlv); tlvdb_free(tlvSelect); tlvdb_free(tlvRoot); DropFieldEx( channel ); return n;}
void InitTransactionParameters(struct tlvdb *tlvRoot, bool paramLoadJSON, enum TransactionType TrType, bool GenACGPO) {
ParamLoadDefaults(tlvRoot);
if (paramLoadJSON) {
PrintAndLog("* * Transaction parameters loading from JSON...");
ParamLoadFromJson(tlvRoot);
}
//9F66:(Terminal Transaction Qualifiers (TTQ)) len:4
char *qVSDC = "\x26\x00\x00\x00";
if (GenACGPO) {
qVSDC = "\x26\x80\x00\x00";
}
switch(TrType) {
case TT_MSD:
TLV_ADD(0x9F66, "\x86\x00\x00\x00"); // MSD
break;
// not standard for contactless. just for test.
case TT_VSDC:
TLV_ADD(0x9F66, "\x46\x00\x00\x00"); // VSDC
break;
case TT_QVSDCMCHIP:
TLV_ADD(0x9F66, qVSDC); // qVSDC
break;
case TT_CDA:
TLV_ADD(0x9F66, qVSDC); // qVSDC (VISA CDA not enabled)
break;
default:
break;
}
}
void ProcessGPOResponseFormat1(struct tlvdb *tlvRoot, uint8_t *buf, size_t len, bool decodeTLV) {
if (buf[0] == 0x80) {
if (decodeTLV){
PrintAndLog("GPO response format1:");
TLVPrintFromBuffer(buf, len);
}
if (len < 4 || (len - 4) % 4) {
PrintAndLogEx(ERR, "GPO response format1 parsing error. length=%d", len);
} else {
// AIP
struct tlvdb * f1AIP = tlvdb_fixed(0x82, 2, buf + 2);
tlvdb_add(tlvRoot, f1AIP);
if (decodeTLV){
PrintAndLogEx(INFO, "\n* * Decode response format 1 (0x80) AIP and AFL:");
TLVPrintFromTLV(f1AIP);
}
// AFL
struct tlvdb * f1AFL = tlvdb_fixed(0x94, len - 4, buf + 2 + 2);
tlvdb_add(tlvRoot, f1AFL);
if (decodeTLV)
TLVPrintFromTLV(f1AFL);
}
} else {
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
}
}
void ProcessACResponseFormat1(struct tlvdb *tlvRoot, uint8_t *buf, size_t len, bool decodeTLV) {
if (buf[0] == 0x80) {
if (decodeTLV){
PrintAndLog("GPO response format1:");
TLVPrintFromBuffer(buf, len);
}
uint8_t elmlen = len - 2; // wo 0x80XX
if (len < 4 + 2 || (elmlen - 2) % 4 || elmlen != buf[1]) {
PrintAndLogEx(ERR, "GPO response format1 parsing error. length=%d", len);
} else {
struct tlvdb *tlvElm = NULL;
if (decodeTLV)
PrintAndLog("\n------------ Format1 decoded ------------");
// CID (Cryptogram Information Data)
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f27, 1, &buf[2], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
// ATC (Application Transaction Counter)
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f36, 2, &buf[3], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
// AC (Application Cryptogram)
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f26, MIN(8, elmlen - 3), &buf[5], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
// IAD (Issuer Application Data) - optional
if (len > 11 + 2) {
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f10, elmlen - 11, &buf[13], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
}
}
} else {
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
}
}
int CmdEMVExec(const char *cmd) {
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
uint8_t AID[APDU_DATA_LEN] = {0};
size_t AIDlen = 0;
uint8_t ODAiList[4096];
size_t ODAiListLen = 0;
int res;
struct tlvdb *tlvSelect = NULL;
struct tlvdb *tlvRoot = NULL;
struct tlv *pdol_data_tlv = NULL;
CLIParserInit("emv exec",
"Executes EMV contactless transaction",
"Usage:\n"
"\temv exec -sat -> select card, execute MSD transaction, show APDU and TLV\n"
"\temv exec -satc -> select card, execute CDA transaction, show APDU and TLV\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("sS", "select", "activate field and select card."),
arg_lit0("aA", "apdu", "show APDU reqests and responses."),
arg_lit0("tT", "tlv", "TLV decode results."),
arg_lit0("jJ", "jload", "Load transaction parameters from `emv/defparams.json` file."),
arg_lit0("fF", "forceaid", "Force search AID. Search AID instead of execute PPSE."),
arg_rem("By default:", "Transaction type - MSD"),
arg_lit0("vV", "qvsdc", "Transaction type - qVSDC or M/Chip."),
arg_lit0("cC", "qvsdccda", "Transaction type - qVSDC or M/Chip plus CDA (SDAD generation)."),
arg_lit0("xX", "vsdc", "Transaction type - VSDC. For test only. Not a standart behavior."),
arg_lit0("gG", "acgpo", "VISA. generate AC from GPO."),
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool activateField = arg_get_lit(1);
bool showAPDU = arg_get_lit(2);
bool decodeTLV = arg_get_lit(3);
bool paramLoadJSON = arg_get_lit(4);
bool forceSearch = arg_get_lit(5);
enum TransactionType TrType = TT_MSD;
if (arg_get_lit(7))
TrType = TT_QVSDCMCHIP;
if (arg_get_lit(8))
TrType = TT_CDA;
if (arg_get_lit(9))
TrType = TT_VSDC;
bool GenACGPO = arg_get_lit(10);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(11))
channel = ECC_CONTACT;
#endif
PrintChannel(channel);
uint8_t psenum = (channel == ECC_CONTACT) ? 1 : 2;
char *PSE_or_PPSE = psenum == 1 ? "PSE" : "PPSE";
CLIParserFree();
SetAPDULogging(showAPDU);
// init applets list tree
const char *al = "Applets list";
tlvSelect = tlvdb_fixed(1, strlen(al), (const unsigned char *)al);
// Application Selection
// https://www.openscdp.org/scripts/tutorial/emv/applicationselection.html
if (!forceSearch) {
// PPSE / PSE
PrintAndLogEx(NORMAL, "\n* %s.", PSE_or_PPSE);
SetAPDULogging(showAPDU);
res = EMVSearchPSE(channel, activateField, true, psenum, decodeTLV, tlvSelect);
// check PPSE / PSE and select application id
if (!res) {
TLVPrintAIDlistFromSelectTLV(tlvSelect);
EMVSelectApplication(tlvSelect, AID, &AIDlen);
}
}
// Search
if (!AIDlen) {
PrintAndLogEx(NORMAL, "\n* Search AID in list.");
SetAPDULogging(false);
if (EMVSearch(channel, activateField, true, decodeTLV, tlvSelect)) {
dreturn(2);
}
// check search and select application id
TLVPrintAIDlistFromSelectTLV(tlvSelect);
EMVSelectApplication(tlvSelect, AID, &AIDlen);
}
// Init TLV tree
const char *alr = "Root terminal TLV tree";
tlvRoot = tlvdb_fixed(1, strlen(alr), (const unsigned char *)alr);
// check if we found EMV application on card
if (!AIDlen) {
PrintAndLogEx(WARNING, "Can't select AID. EMV AID not found");
dreturn(2);
}
// Select
PrintAndLogEx(NORMAL, "\n* Selecting AID:%s", sprint_hex_inrow(AID, AIDlen));
SetAPDULogging(showAPDU);
res = EMVSelect(channel, false, true, AID, AIDlen, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(WARNING, "Can't select AID (%d). Exit...", res);
dreturn(3);
}
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
PrintAndLogEx(INFO, "* Selected.");
PrintAndLogEx(INFO, "\n* Init transaction parameters.");
InitTransactionParameters(tlvRoot, paramLoadJSON, TrType, GenACGPO);
TLVPrintFromTLV(tlvRoot); // TODO delete!!!
PrintAndLogEx(NORMAL, "\n* Calc PDOL.");
pdol_data_tlv = dol_process(tlvdb_get(tlvRoot, 0x9f38, NULL), tlvRoot, 0x83);
if (!pdol_data_tlv){
PrintAndLogEx(WARNING, "Error: can't create PDOL TLV.");
dreturn(4);
}
size_t pdol_data_tlv_data_len;
unsigned char *pdol_data_tlv_data = tlv_encode(pdol_data_tlv, &pdol_data_tlv_data_len);
if (!pdol_data_tlv_data) {
PrintAndLogEx(WARNING, "Error: can't create PDOL data.");
dreturn(4);
}
PrintAndLogEx(NORMAL, "PDOL data[%d]: %s", pdol_data_tlv_data_len, sprint_hex(pdol_data_tlv_data, pdol_data_tlv_data_len));
PrintAndLogEx(NORMAL, "\n* GPO.");
res = EMVGPO(channel, true, pdol_data_tlv_data, pdol_data_tlv_data_len, buf, sizeof(buf), &len, &sw, tlvRoot);
free(pdol_data_tlv_data);
//free(pdol_data_tlv); --- free on exit.
if (res) {
PrintAndLogEx(NORMAL, "GPO error(%d): %4x. Exit...", res, sw);
dreturn(5);
}
// process response template format 1 [id:80 2b AIP + x4b AFL] and format 2 [id:77 TLV]
ProcessGPOResponseFormat1(tlvRoot, buf, len, decodeTLV);
// extract PAN from track2
{
const struct tlv *track2 = tlvdb_get(tlvRoot, 0x57, NULL);
if (!tlvdb_get(tlvRoot, 0x5a, NULL) && track2 && track2->len >= 8) {
struct tlvdb *pan = GetPANFromTrack2(track2);
if (pan) {
tlvdb_add(tlvRoot, pan);
const struct tlv *pantlv = tlvdb_get(tlvRoot, 0x5a, NULL);
PrintAndLogEx(NORMAL, "\n* * Extracted PAN from track2: %s", sprint_hex(pantlv->value, pantlv->len));
} else {
PrintAndLogEx(NORMAL, "\n* * WARNING: Can't extract PAN from track2.");
}
}
}
PrintAndLogEx(NORMAL, "\n* Read records from AFL.");
const struct tlv *AFL = tlvdb_get(tlvRoot, 0x94, NULL);
if (!AFL || !AFL->len) {
PrintAndLogEx(WARNING, "AFL not found.");
}
while(AFL && AFL->len) {
if (AFL->len % 4) {
PrintAndLogEx(WARNING, "Error: Wrong AFL length: %d", AFL->len);
break;
}
for (int i = 0; i < AFL->len / 4; i++) {
uint8_t SFI = AFL->value[i * 4 + 0] >> 3;
uint8_t SFIstart = AFL->value[i * 4 + 1];
uint8_t SFIend = AFL->value[i * 4 + 2];
uint8_t SFIoffline = AFL->value[i * 4 + 3];
PrintAndLogEx(NORMAL, "* * SFI[%02x] start:%02x end:%02x offline count:%02x", SFI, SFIstart, SFIend, SFIoffline);
if (SFI == 0 || SFI == 31 || SFIstart == 0 || SFIstart > SFIend) {
PrintAndLogEx(NORMAL, "SFI ERROR! Skipped...");
continue;
}
for(int n = SFIstart; n <= SFIend; n++) {
PrintAndLogEx(NORMAL, "* * * SFI[%02x] %d", SFI, n);
res = EMVReadRecord(channel, true, SFI, n, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(WARNING, "Error SFI[%02x]. APDU error %4x", SFI, sw);
continue;
}
if (decodeTLV) {
TLVPrintFromBuffer(buf, len);
PrintAndLogEx(NORMAL, "");
}
// Build Input list for Offline Data Authentication
// EMV 4.3 book3 10.3, page 96
if (SFIoffline > 0) {
if (SFI < 11) {
const unsigned char *abuf = buf;
size_t elmlen = len;
struct tlv e;
if (tlv_parse_tl(&abuf, &elmlen, &e)) {
memcpy(&ODAiList[ODAiListLen], &buf[len - elmlen], elmlen);
ODAiListLen += elmlen;
} else {
PrintAndLogEx(WARNING, "Error SFI[%02x]. Creating input list for Offline Data Authentication error.", SFI);
}
} else {
memcpy(&ODAiList[ODAiListLen], buf, len);
ODAiListLen += len;
}
SFIoffline--;
}
}
}
break;
}
// copy Input list for Offline Data Authentication
if (ODAiListLen) {
struct tlvdb *oda = tlvdb_fixed(0x21, ODAiListLen, ODAiList); // not a standard tag
tlvdb_add(tlvRoot, oda);
PrintAndLogEx(NORMAL, "* Input list for Offline Data Authentication added to TLV. len=%d \n", ODAiListLen);
}
// get AIP
uint16_t AIP = 0;
const struct tlv *AIPtlv = tlvdb_get(tlvRoot, 0x82, NULL);
if (AIPtlv) {
AIP = AIPtlv->value[0] + AIPtlv->value[1] * 0x100;
PrintAndLogEx(NORMAL, "* * AIP=%04x", AIP);
} else {
PrintAndLogEx(ERR, "Can't found AIP.");
}
// SDA
if (AIP & 0x0040) {
PrintAndLogEx(NORMAL, "\n* SDA");
trSDA(tlvRoot);
}
// DDA
if (AIP & 0x0020) {
PrintAndLogEx(NORMAL, "\n* DDA");
trDDA(channel, decodeTLV, tlvRoot);
}
// transaction check
// qVSDC
if (TrType == TT_QVSDCMCHIP|| TrType == TT_CDA){
// 9F26: Application Cryptogram
const struct tlv *AC = tlvdb_get(tlvRoot, 0x9F26, NULL);
if (AC) {
PrintAndLogEx(NORMAL, "\n--> qVSDC transaction.");
PrintAndLogEx(NORMAL, "* AC path");
// 9F36: Application Transaction Counter (ATC)
const struct tlv *ATC = tlvdb_get(tlvRoot, 0x9F36, NULL);
if (ATC) {
// 9F10: Issuer Application Data - optional
const struct tlv *IAD = tlvdb_get(tlvRoot, 0x9F10, NULL);
// print AC data
PrintAndLogEx(NORMAL, "ATC: %s", sprint_hex(ATC->value, ATC->len));
PrintAndLogEx(NORMAL, "AC: %s", sprint_hex(AC->value, AC->len));
if (IAD){
PrintAndLogEx(NORMAL, "IAD: %s", sprint_hex(IAD->value, IAD->len));
if (IAD->len >= IAD->value[0] + 1) {
PrintAndLogEx(NORMAL, "\tKey index: 0x%02x", IAD->value[1]);
PrintAndLogEx(NORMAL, "\tCrypto ver: 0x%02x(%03d)", IAD->value[2], IAD->value[2]);
PrintAndLogEx(NORMAL, "\tCVR:", sprint_hex(&IAD->value[3], IAD->value[0] - 2));
struct tlvdb * cvr = tlvdb_fixed(0x20, IAD->value[0] - 2, &IAD->value[3]);
TLVPrintFromTLVLev(cvr, 1);
}
} else {
PrintAndLogEx(WARNING, "IAD not found.");
}
} else {
PrintAndLogEx(ERR, "AC: Application Transaction Counter (ATC) not found.");
}
}
}
// Mastercard M/CHIP
if (GetCardPSVendor(AID, AIDlen) == CV_MASTERCARD && (TrType == TT_QVSDCMCHIP || TrType == TT_CDA)){
const struct tlv *CDOL1 = tlvdb_get(tlvRoot, 0x8c, NULL);
if (CDOL1 && GetCardPSVendor(AID, AIDlen) == CV_MASTERCARD) { // and m/chip transaction flag
PrintAndLogEx(NORMAL, "\n--> Mastercard M/Chip transaction.");
PrintAndLogEx(NORMAL, "* * Generate challenge");
res = EMVGenerateChallenge(channel, true, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(WARNING, "GetChallenge. APDU error %4x", sw);
dreturn(6);
}
if (len < 4) {
PrintAndLogEx(WARNING, "GetChallenge. Wrong challenge length %d", len);
dreturn(6);
}
// ICC Dynamic Number
struct tlvdb * ICCDynN = tlvdb_fixed(0x9f4c, len, buf);
tlvdb_add(tlvRoot, ICCDynN);
if (decodeTLV){
PrintAndLogEx(NORMAL, "\n* * ICC Dynamic Number:");
TLVPrintFromTLV(ICCDynN);
}
PrintAndLogEx(NORMAL, "* * Calc CDOL1");
struct tlv *cdol_data_tlv = dol_process(tlvdb_get(tlvRoot, 0x8c, NULL), tlvRoot, 0x01); // 0x01 - dummy tag
if (!cdol_data_tlv){
PrintAndLogEx(WARNING, "Error: can't create CDOL1 TLV.");
dreturn(6);
}
PrintAndLogEx(NORMAL, "CDOL1 data[%d]: %s", cdol_data_tlv->len, sprint_hex(cdol_data_tlv->value, cdol_data_tlv->len));
PrintAndLogEx(NORMAL, "* * AC1");
// EMVAC_TC + EMVAC_CDAREQ --- to get SDAD
res = EMVAC(channel, true, (TrType == TT_CDA) ? EMVAC_TC + EMVAC_CDAREQ : EMVAC_TC, (uint8_t *)cdol_data_tlv->value, cdol_data_tlv->len, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(NORMAL, "AC1 error(%d): %4x. Exit...", res, sw);
dreturn(7);
}
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
// CDA
PrintAndLogEx(NORMAL, "\n* CDA:");
struct tlvdb *ac_tlv = tlvdb_parse_multi(buf, len);
res = trCDA(tlvRoot, ac_tlv, pdol_data_tlv, cdol_data_tlv);
if (res) {
PrintAndLogEx(NORMAL, "CDA error (%d)", res);
}
free(ac_tlv);
free(cdol_data_tlv);
PrintAndLogEx(NORMAL, "\n* M/Chip transaction result:");
// 9F27: Cryptogram Information Data (CID)
const struct tlv *CID = tlvdb_get(tlvRoot, 0x9F27, NULL);
if (CID) {
emv_tag_dump(CID, stdout, 0);
PrintAndLogEx(NORMAL, "------------------------------");
if (CID->len > 0) {
switch(CID->value[0] & EMVAC_AC_MASK){
case EMVAC_AAC:
PrintAndLogEx(NORMAL, "Transaction DECLINED.");
break;
case EMVAC_TC:
PrintAndLogEx(NORMAL, "Transaction approved OFFLINE.");
break;
case EMVAC_ARQC:
PrintAndLogEx(NORMAL, "Transaction approved ONLINE.");
break;
default:
PrintAndLogEx(WARNING, "Error: CID transaction code error %2x", CID->value[0] & EMVAC_AC_MASK);
break;
}
} else {
PrintAndLogEx(WARNING, "Wrong CID length %d", CID->len);
}
} else {
PrintAndLogEx(WARNING, "CID(9F27) not found.");
}
}
}
// MSD
if (AIP & 0x8000 && TrType == TT_MSD) {
PrintAndLogEx(NORMAL, "\n--> MSD transaction.");
PrintAndLogEx(NORMAL, "* MSD dCVV path. Check dCVV");
const struct tlv *track2 = tlvdb_get(tlvRoot, 0x57, NULL);
if (track2) {
PrintAndLogEx(NORMAL, "Track2: %s", sprint_hex(track2->value, track2->len));
struct tlvdb *dCVV = GetdCVVRawFromTrack2(track2);
PrintAndLogEx(NORMAL, "dCVV raw data:");
TLVPrintFromTLV(dCVV);
if (GetCardPSVendor(AID, AIDlen) == CV_MASTERCARD) {
PrintAndLogEx(NORMAL, "\n* Mastercard calculate UDOL");
// UDOL (9F69)
const struct tlv *UDOL = tlvdb_get(tlvRoot, 0x9F69, NULL);
// UDOL(9F69) default: 9F6A (Unpredictable number) 4 bytes
const struct tlv defUDOL = {
.tag = 0x01,
.len = 3,
.value = (uint8_t *)"\x9f\x6a\x04",
};
if (!UDOL)
PrintAndLogEx(NORMAL, "Use default UDOL.");
struct tlv *udol_data_tlv = dol_process(UDOL ? UDOL : &defUDOL, tlvRoot, 0x01); // 0x01 - dummy tag
if (!udol_data_tlv){
PrintAndLogEx(WARNING, "can't create UDOL TLV.");
dreturn(8);
}
PrintAndLogEx(NORMAL, "UDOL data[%d]: %s", udol_data_tlv->len, sprint_hex(udol_data_tlv->value, udol_data_tlv->len));
PrintAndLogEx(NORMAL, "\n* Mastercard compute cryptographic checksum(UDOL)");
res = MSCComputeCryptoChecksum(channel, true, (uint8_t *)udol_data_tlv->value, udol_data_tlv->len, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(WARNING, "Compute Crypto Checksum. APDU error %4x", sw);
free(udol_data_tlv);
dreturn(9);
}
// Mastercard compute cryptographic checksum result
TLVPrintFromBuffer(buf, len);
PrintAndLogEx(NORMAL, "");
free(udol_data_tlv);
}
} else {
PrintAndLogEx(WARNING, "MSD: Track2 data not found.");
}
}
// VSDC
if (GetCardPSVendor(AID, AIDlen) == CV_VISA && (TrType == TT_VSDC || TrType == TT_CDA)){
PrintAndLogEx(NORMAL, "\n--> VSDC transaction.");
PrintAndLogEx(NORMAL, "* * Calc CDOL1");
struct tlv *cdol_data_tlv = dol_process(tlvdb_get(tlvRoot, 0x8c, NULL), tlvRoot, 0x01); // 0x01 - dummy tag
if (!cdol_data_tlv) {
PrintAndLogEx(WARNING, "Error: can't create CDOL1 TLV.");
dreturn(6);
}
PrintAndLogEx(NORMAL, "CDOL1 data[%d]: %s", cdol_data_tlv->len, sprint_hex(cdol_data_tlv->value, cdol_data_tlv->len));
PrintAndLogEx(NORMAL, "* * AC1");
// EMVAC_TC + EMVAC_CDAREQ --- to get SDAD
res = EMVAC(channel, true, (TrType == TT_CDA) ? EMVAC_TC + EMVAC_CDAREQ : EMVAC_TC, (uint8_t *)cdol_data_tlv->value, cdol_data_tlv->len, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(NORMAL, "AC1 error(%d): %4x. Exit...", res, sw);
dreturn(7);
}
// process Format1 (0x80) and print Format2 (0x77)
ProcessACResponseFormat1(tlvRoot, buf, len, decodeTLV);
uint8_t CID = 0;
tlvdb_get_uint8(tlvRoot, 0x9f27, &CID);
// AC1 print result
PrintAndLog("");
if ((CID & EMVAC_AC_MASK) == EMVAC_AAC) PrintAndLogEx(INFO, "AC1 result: AAC (Transaction declined)");
if ((CID & EMVAC_AC_MASK) == EMVAC_TC) PrintAndLogEx(INFO, "AC1 result: TC (Transaction approved)");
if ((CID & EMVAC_AC_MASK) == EMVAC_ARQC) PrintAndLogEx(INFO, "AC1 result: ARQC (Online authorisation requested)");
if ((CID & EMVAC_AC_MASK) == EMVAC_AC_MASK) PrintAndLogEx(INFO, "AC1 result: RFU");
// decode Issuer Application Data (IAD)
uint8_t CryptoVersion = 0;
const struct tlv *IAD = tlvdb_get(tlvRoot, 0x9f10, NULL);
if (IAD && (IAD->len > 1)) {
PrintAndLogEx(NORMAL, "\n* * Issuer Application Data (IAD):");
uint8_t VDDlen = IAD->value[0]; // Visa discretionary data length
uint8_t IDDlen = 0; // Issuer discretionary data length
PrintAndLogEx(NORMAL, "IAD length: %d", IAD->len);
PrintAndLogEx(NORMAL, "VDDlen: %d", VDDlen);
if (VDDlen < IAD->len - 1)
IDDlen = IAD->value[VDDlen + 1];
PrintAndLogEx(NORMAL, "IDDlen: %d", IDDlen);
uint8_t DerivKeyIndex = IAD->value[1];
CryptoVersion = IAD->value[2];
PrintAndLogEx(NORMAL, "CryptoVersion: %d", CryptoVersion);
PrintAndLogEx(NORMAL, "DerivKeyIndex: %d", DerivKeyIndex);
// Card Verification Results (CVR) decode
if ((VDDlen - 2) > 0) {
uint8_t CVRlen = IAD->value[3];
if (CVRlen == (VDDlen - 2 - 1)) {
PrintAndLogEx(NORMAL, "CVR length: %d", CVRlen);
PrintAndLogEx(NORMAL, "CVR: %s", sprint_hex(&IAD->value[4], CVRlen));
} else {
PrintAndLogEx(NORMAL, "Wrong CVR length! CVR: %s", sprint_hex(&IAD->value[3], VDDlen - 2));
}
}
if (IDDlen)
PrintAndLogEx(NORMAL, "IDD: %s", sprint_hex(&IAD->value[VDDlen + 1], IDDlen));
} else {
PrintAndLogEx(NORMAL, "Issuer Application Data (IAD) not found.");
}
PrintAndLogEx(NORMAL, "\n* * Processing online request");
// authorization response code from acquirer
const char HostResponse[] = "00"; // 0x3030
size_t HostResponseLen = sizeof(HostResponse) - 1;
PrintAndLogEx(NORMAL, "Host Response: `%s`", HostResponse);
tlvdb_change_or_add_node(tlvRoot, 0x8a, HostResponseLen, (const unsigned char *)HostResponse);
if (CryptoVersion == 10) {
PrintAndLogEx(NORMAL, "\n* * Generate ARPC");
// Application Cryptogram (AC)
const struct tlv *AC = tlvdb_get(tlvRoot, 0x9f26, NULL);
if (AC && (AC->len > 0)) {
PrintAndLogEx(NORMAL, "AC: %s", sprint_hex(AC->value, AC->len));
size_t rawARPClen = AC->len;
uint8_t rawARPC[rawARPClen];
memcpy(rawARPC, AC->value, AC->len);
for (int i = 0; (i < HostResponseLen) && (i < rawARPClen); i++)
rawARPC[i] ^= HostResponse[i];
PrintAndLogEx(NORMAL, "raw ARPC: %s", sprint_hex(rawARPC, rawARPClen));
// here must be calculation of ARPC, but we dont know a bank keys.
PrintAndLogEx(NORMAL, "ARPC: n/a");
} else {
PrintAndLogEx(NORMAL, "Application Cryptogram (AC) not found.");
}
// here must be external authenticate, but we dont know ARPC
}
// needs to send AC2 command (res == ARQC)
if ((CID & EMVAC_AC_MASK) == EMVAC_ARQC) {
PrintAndLogEx(NORMAL, "\n* * Calc CDOL2");
struct tlv *cdol2_data_tlv = dol_process(tlvdb_get(tlvRoot, 0x8d, NULL), tlvRoot, 0x01); // 0x01 - dummy tag
if (!cdol2_data_tlv) {
PrintAndLogEx(WARNING, "Error: can't create CDOL2 TLV.");
dreturn(6);
}
PrintAndLogEx(NORMAL, "CDOL2 data[%d]: %s", cdol2_data_tlv->len, sprint_hex(cdol2_data_tlv->value, cdol2_data_tlv->len));
//PrintAndLogEx(NORMAL, "* * AC2");
// here must be AC2, but we dont make external authenticate (
/* // AC2
PRINT_INDENT(level);
if ((CID & EMVAC_AC2_MASK) == EMVAC_AAC2) fprintf(f, "\tAC2: AAC (Transaction declined)\n");
if ((CID & EMVAC_AC2_MASK) == EMVAC_TC2) fprintf(f, "\tAC2: TC (Transaction approved)\n");
if ((CID & EMVAC_AC2_MASK) == EMVAC_ARQC2) fprintf(f, "\tAC2: not requested (ARQC)\n");
if ((CID & EMVAC_AC2_MASK) == EMVAC_AC2_MASK) fprintf(f, "\tAC2: RFU\n");
*/
}
}
DropFieldEx( channel );
// Destroy TLV's
free(pdol_data_tlv);
tlvdb_free(tlvSelect);
tlvdb_free(tlvRoot);
PrintAndLogEx(NORMAL, "\n* Transaction completed.");
return 0;
}
int CmdEMVScan(const char *cmd) {
uint8_t AID[APDU_DATA_LEN] = {0};
size_t AIDlen = 0;
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res;
json_t *root;
json_error_t error;
CLIParserInit("emv scan",
"Scan EMV card and save it contents to a file.",
"It executes EMV contactless transaction and saves result to a file which can be used for emulation\n"
"Usage:\n\temv scan -at -> scan MSD transaction mode and show APDU and TLV\n"
"\temv scan -c -> scan CDA transaction mode\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("aA", "apdu", "show APDU reqests and responses."),
arg_lit0("tT", "tlv", "TLV decode results."),
arg_lit0("eE", "extract", "Extract TLV elements and fill Application Data"),
arg_lit0("jJ", "jload", "Load transaction parameters from `emv/defparams.json` file."),
arg_rem("By default:", "Transaction type - MSD"),
arg_lit0("vV", "qvsdc", "Transaction type - qVSDC or M/Chip."),
arg_lit0("cC", "qvsdccda", "Transaction type - qVSDC or M/Chip plus CDA (SDAD generation)."),
arg_lit0("xX", "vsdc", "Transaction type - VSDC. For test only. Not a standart behavior."),
arg_lit0("gG", "acgpo", "VISA. generate AC from GPO."),
arg_lit0("mM", "merge", "Merge output file with card's data. (warning: the file may be corrupted!)"),
#ifdef WITH_SMARTCARD
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
#endif
arg_str1(NULL, NULL, "output.json", "JSON output file name"),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool showAPDU = arg_get_lit(1);
bool decodeTLV = arg_get_lit(2);
bool extractTLVElements = arg_get_lit(3);
bool paramLoadJSON = arg_get_lit(4);
enum TransactionType TrType = TT_MSD;
if (arg_get_lit(6))
TrType = TT_QVSDCMCHIP;
if (arg_get_lit(7))
TrType = TT_CDA;
if (arg_get_lit(8))
TrType = TT_VSDC;
bool GenACGPO = arg_get_lit(9);
bool MergeJSON = arg_get_lit(10);
EMVCommandChannel channel = ECC_CONTACTLESS;
uint8_t relfname[250] = {0};
char *crelfname = (char *)relfname;
int relfnamelen = 0;
#ifdef WITH_SMARTCARD
if (arg_get_lit(11)) {
channel = ECC_CONTACT;
}
CLIGetStrWithReturn(12, relfname, &relfnamelen);
#else
CLIGetStrWithReturn(11, relfname, &relfnamelen);
#endif
PrintChannel(channel);
uint8_t psenum = (channel == ECC_CONTACT) ? 1 : 2;
CLIParserFree();
SetAPDULogging(showAPDU);
// current path + file name
if (!strstr(crelfname, ".json"))
strcat(crelfname, ".json");
char fname[strlen(get_my_executable_directory()) + strlen(crelfname) + 1];
strcpy(fname, get_my_executable_directory());
strcat(fname, crelfname);
if (MergeJSON) {
root = json_load_file(fname, 0, &error);
if (!root) {
PrintAndLogEx(ERR, "json error on line %d: %s", error.line, error.text);
return 1;
}
if (!json_is_object(root)) {
PrintAndLogEx(ERR, "Invalid json format. root must be an object.");
return 1;
}
} else {
root = json_object();
}
// drop field at start
DropFieldEx( channel );
JsonSaveStr(root, "$.File.Created", "proxmark3 `emv scan`");
if (channel == ECC_CONTACTLESS) {
// iso 14443 select
PrintAndLogEx(NORMAL, "--> GET UID, ATS.");
iso14a_card_select_t card;
if (Hf14443_4aGetCardData(&card)) {
return 2;
}
if (!card.uidlen) {
PrintAndLogEx(ERR, "get ATS error");
return 2;
}
JsonSaveStr(root, "$.Card.Contactless.Communication", "iso14443-4a");
JsonSaveBufAsHex(root, "$.Card.Contactless.UID", (uint8_t *)&card.uid, card.uidlen);
JsonSaveHex(root, "$.Card.Contactless.ATQA", card.atqa[0] + (card.atqa[1] << 2), 2);
JsonSaveHex(root, "$.Card.Contactless.SAK", card.sak, 0);
JsonSaveBufAsHex(root, "$.Card.Contactless.ATS", (uint8_t *)card.ats, card.ats_len);
} else {
PrintAndLogEx(NORMAL, "--> GET ATR.");
smart_card_atr_t ccard;
smart_getATR(&ccard);
if (!ccard.atr_len) {
PrintAndLogEx(ERR, "get ATR error");
return 2;
}
JsonSaveStr(root, "$.Card.Contact.Communication", "iso7816");
JsonSaveBufAsHex(root, "$.Card.Contact.ATR", (uint8_t *)ccard.atr, ccard.atr_len);
}
// init applets list tree
const char *al = "Applets list";
struct tlvdb *tlvSelect = tlvdb_fixed(1, strlen(al), (const unsigned char *)al);
// EMV PPSE
PrintAndLogEx(NORMAL, "--> PPSE.");
res = EMVSelectPSE(channel, true, true, 2, buf, sizeof(buf), &len, &sw);
if (!res && sw == 0x9000){
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
JsonSaveBufAsHex(root, "$.PPSE.AID", (uint8_t *)"2PAY.SYS.DDF01", 14);
struct tlvdb *fci = tlvdb_parse_multi(buf, len);
if (extractTLVElements)
JsonSaveTLVTree(root, root, "$.PPSE.FCITemplate", fci);
else
JsonSaveTLVTreeElm(root, "$.PPSE.FCITemplate", fci, true, true, false);
JsonSaveTLVValue(root, "$.Application.KernelID", tlvdb_find_full(fci, 0x9f2a));
tlvdb_free(fci);
}
res = EMVSearchPSE(channel, false, true, psenum, decodeTLV, tlvSelect);
// check PPSE and select application id
if (!res) {
TLVPrintAIDlistFromSelectTLV(tlvSelect);
} else {
// EMV SEARCH with AID list
SetAPDULogging(false);
PrintAndLogEx(NORMAL, "--> AID search.");
if (EMVSearch(channel, false, true, decodeTLV, tlvSelect)) {
PrintAndLogEx(ERR, "Can't found any of EMV AID. Exit...");
tlvdb_free(tlvSelect);
DropFieldEx( channel );
return 3;
}
// check search and select application id
TLVPrintAIDlistFromSelectTLV(tlvSelect);
}
// EMV SELECT application
SetAPDULogging(showAPDU);
EMVSelectApplication(tlvSelect, AID, &AIDlen);
tlvdb_free(tlvSelect);
if (!AIDlen) {
PrintAndLogEx(INFO, "Can't select AID. EMV AID not found. Exit...");
DropFieldEx( channel );
return 4;
}
JsonSaveBufAsHex(root, "$.Application.AID", AID, AIDlen);
// Init TLV tree
const char *alr = "Root terminal TLV tree";
struct tlvdb *tlvRoot = tlvdb_fixed(1, strlen(alr), (const unsigned char *)alr);
// EMV SELECT applet
PrintAndLogEx(NORMAL, "\n-->Selecting AID:%s.", sprint_hex_inrow(AID, AIDlen));
SetAPDULogging(showAPDU);
res = EMVSelect(channel, false, true, AID, AIDlen, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(ERR, "Can't select AID (%d). Exit...", res);
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 5;
}
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
// save mode
if (tlvdb_get(tlvRoot, 0x9f38, NULL)) {
JsonSaveStr(root, "$.Application.Mode", TransactionTypeStr[TrType]);
}
struct tlvdb *fci = tlvdb_parse_multi(buf, len);
if (extractTLVElements)
JsonSaveTLVTree(root, root, "$.Application.FCITemplate", fci);
else
JsonSaveTLVTreeElm(root, "$.Application.FCITemplate", fci, true, true, false);
tlvdb_free(fci);
// create transaction parameters
PrintAndLogEx(NORMAL, "-->Init transaction parameters.");
InitTransactionParameters(tlvRoot, paramLoadJSON, TrType, GenACGPO);
PrintAndLogEx(NORMAL, "-->Calc PDOL.");
struct tlv *pdol_data_tlv = dol_process(tlvdb_get(tlvRoot, 0x9f38, NULL), tlvRoot, 0x83);
if (!pdol_data_tlv){
PrintAndLogEx(ERR, "Can't create PDOL TLV.");
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 6;
}
size_t pdol_data_tlv_data_len;
unsigned char *pdol_data_tlv_data = tlv_encode(pdol_data_tlv, &pdol_data_tlv_data_len);
if (!pdol_data_tlv_data) {
PrintAndLogEx(ERR, "Can't create PDOL data.");
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 6;
}
PrintAndLogEx(INFO, "PDOL data[%d]: %s", pdol_data_tlv_data_len, sprint_hex(pdol_data_tlv_data, pdol_data_tlv_data_len));
PrintAndLogEx(INFO, "-->GPO.");
res = EMVGPO(channel, true, pdol_data_tlv_data, pdol_data_tlv_data_len, buf, sizeof(buf), &len, &sw, tlvRoot);
free(pdol_data_tlv_data);
free(pdol_data_tlv);
if (res) {
PrintAndLogEx(ERR, "GPO error(%d): %4x. Exit...", res, sw);
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 7;
}
ProcessGPOResponseFormat1(tlvRoot, buf, len, decodeTLV);
struct tlvdb *gpofci = tlvdb_parse_multi(buf, len);
if (extractTLVElements)
JsonSaveTLVTree(root, root, "$.Application.GPO", gpofci);
else
JsonSaveTLVTreeElm(root, "$.Application.GPO", gpofci, true, true, false);
JsonSaveTLVValue(root, "$.ApplicationData.AIP", tlvdb_find_full(gpofci, 0x82));
JsonSaveTLVValue(root, "$.ApplicationData.AFL", tlvdb_find_full(gpofci, 0x94));
tlvdb_free(gpofci);
PrintAndLogEx(INFO, "-->Read records from AFL.");
const struct tlv *AFL = tlvdb_get(tlvRoot, 0x94, NULL);
while(AFL && AFL->len) {
if (AFL->len % 4) {
PrintAndLogEx(ERR, "Wrong AFL length: %d", AFL->len);
break;
}
json_t *sfijson = json_path_get(root, "$.Application.Records");
if (!sfijson) {
json_t *app = json_path_get(root, "$.Application");
json_object_set_new(app, "Records", json_array());
sfijson = json_path_get(root, "$.Application.Records");
}
if (!json_is_array(sfijson)) {
PrintAndLogEx(ERR, "Internal logic error. `$.Application.Records` is not an array.");
break;
}
for (int i = 0; i < AFL->len / 4; i++) {
uint8_t SFI = AFL->value[i * 4 + 0] >> 3;
uint8_t SFIstart = AFL->value[i * 4 + 1];
uint8_t SFIend = AFL->value[i * 4 + 2];
uint8_t SFIoffline = AFL->value[i * 4 + 3];
PrintAndLogEx(INFO, "--->SFI[%02x] start:%02x end:%02x offline:%02x", SFI, SFIstart, SFIend, SFIoffline);
if (SFI == 0 || SFI == 31 || SFIstart == 0 || SFIstart > SFIend) {
PrintAndLogEx(ERR, "SFI ERROR! Skipped...");
continue;
}
for(int n = SFIstart; n <= SFIend; n++) {
PrintAndLogEx(INFO, "---->SFI[%02x] %d", SFI, n);
res = EMVReadRecord(channel, true, SFI, n, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(ERR, "SFI[%02x]. APDU error %4x", SFI, sw);
continue;
}
if (decodeTLV) {
TLVPrintFromBuffer(buf, len);
PrintAndLogEx(NORMAL, "");
}
json_t *jsonelm = json_object();
json_array_append_new(sfijson, jsonelm);
JsonSaveHex(jsonelm, "SFI", SFI, 1);
JsonSaveHex(jsonelm, "RecordNum", n, 1);
JsonSaveHex(jsonelm, "Offline", SFIoffline, 1);
struct tlvdb *rsfi = tlvdb_parse_multi(buf, len);
if (extractTLVElements)
JsonSaveTLVTree(root, jsonelm, "$.Data", rsfi);
else
JsonSaveTLVTreeElm(jsonelm, "$.Data", rsfi, true, true, false);
tlvdb_free(rsfi);
}
}
break;
}
// getting certificates
if (tlvdb_get(tlvRoot, 0x90, NULL)) {
PrintAndLogEx(INFO, "-->Recovering certificates.");
PKISetStrictExecution(false);
RecoveryCertificates(tlvRoot, root);
PKISetStrictExecution(true);
}
// free tlv object
tlvdb_free(tlvRoot);
DropFieldEx( channel );
res = json_dump_file(root, fname, JSON_INDENT(2));
if (res) {
PrintAndLogEx(ERR, "Can't save the file: %s", fname);
return 200;
}
PrintAndLogEx(SUCCESS, "File `%s` saved.", fname);
// free json object
json_decref(root);
return 0;
}
int CmdEMVTest(const char *cmd) {
return ExecuteCryptoTests(true);
}
int CmdEMVRoca(const char *cmd) {
uint8_t AID[APDU_DATA_LEN] = {0};
size_t AIDlen = 0;
uint8_t buf[APDU_RESPONSE_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res;
uint8_t ODAiList[4096];
size_t ODAiListLen = 0;
CLIParserInit("emv roca",
"Tries to extract public keys and run the ROCA test against them.\n",
"Usage:\n"
"\temv roca -w -> select --CONTACT-- card and run test\n"
"\temv roca -> select --CONTACTLESS-- card and run test\n"
);
void* argtable[] = {
arg_param_begin,
arg_lit0("tT", "selftest", "self test"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_lit0("wW", "wired", "Send data via contact (iso7816) interface. Contactless interface set by default."),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
if (arg_get_lit(1))
return roca_self_test();
bool showAPDU = arg_get_lit(2);
EMVCommandChannel channel = ECC_CONTACTLESS;
#ifdef WITH_SMARTCARD
if (arg_get_lit(3))
channel = ECC_CONTACT;
#endif
PrintChannel(channel);
CLIParserFree();
// select card
uint8_t psenum = (channel == ECC_CONTACT) ? 1 : 2;
char *PSE_or_PPSE = psenum == 1 ? "PSE" : "PPSE";
SetAPDULogging(showAPDU);
// init applets list tree
const char *al = "Applets list";
struct tlvdb *tlvSelect = tlvdb_fixed(1, strlen(al), (const unsigned char *)al);
// EMV PSE/PPSE
PrintAndLogEx(NORMAL, "--> %s.", PSE_or_PPSE);
res = EMVSearchPSE(channel, true, true, psenum, false, tlvSelect);
// check PSE/PPSE and select application id
if (!res) {
TLVPrintAIDlistFromSelectTLV(tlvSelect);
} else {
// EMV SEARCH with AID list
PrintAndLogEx(NORMAL, "--> AID search.");
if (EMVSearch(channel, false, true, false, tlvSelect)) {
PrintAndLogEx(ERR, "Couldn't find any known EMV AID. Exit...");
tlvdb_free(tlvSelect);
DropFieldEx( channel );
return 3;
}
// check search and select application id
TLVPrintAIDlistFromSelectTLV(tlvSelect);
}
// EMV SELECT application
EMVSelectApplication(tlvSelect, AID, &AIDlen);
tlvdb_free(tlvSelect);
if (!AIDlen) {
PrintAndLogEx(INFO, "Can't select AID. EMV AID not found. Exit...");
DropFieldEx( channel );
return 4;
}
// Init TLV tree
const char *alr = "Root terminal TLV tree";
struct tlvdb *tlvRoot = tlvdb_fixed(1, strlen(alr), (const unsigned char *)alr);
// EMV SELECT applet
PrintAndLogEx(NORMAL, "\n-->Selecting AID:%s.", sprint_hex_inrow(AID, AIDlen));
res = EMVSelect(channel, false, true, AID, AIDlen, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(ERR, "Can't select AID (%d). Exit...", res);
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 5;
}
PrintAndLog("\n* Init transaction parameters.");
InitTransactionParameters(tlvRoot, true, TT_QVSDCMCHIP, false);
PrintAndLogEx(NORMAL, "-->Calc PDOL.");
struct tlv *pdol_data_tlv = dol_process(tlvdb_get(tlvRoot, 0x9f38, NULL), tlvRoot, 0x83);
if (!pdol_data_tlv){
PrintAndLogEx(ERR, "Can't create PDOL TLV.");
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 6;
}
size_t pdol_data_tlv_data_len;
unsigned char *pdol_data_tlv_data = tlv_encode(pdol_data_tlv, &pdol_data_tlv_data_len);
if (!pdol_data_tlv_data) {
PrintAndLogEx(ERR, "Can't create PDOL data.");
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 6;
}
PrintAndLogEx(INFO, "PDOL data[%d]: %s", pdol_data_tlv_data_len, sprint_hex(pdol_data_tlv_data, pdol_data_tlv_data_len));
PrintAndLogEx(INFO, "-->GPO.");
res = EMVGPO(channel, true, pdol_data_tlv_data, pdol_data_tlv_data_len, buf, sizeof(buf), &len, &sw, tlvRoot);
free(pdol_data_tlv_data);
free(pdol_data_tlv);
if (res) {
PrintAndLogEx(ERR, "GPO error(%d): %4x. Exit...", res, sw);
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 7;
}
ProcessGPOResponseFormat1(tlvRoot, buf, len, false);
PrintAndLogEx(INFO, "-->Read records from AFL.");
const struct tlv *AFL = tlvdb_get(tlvRoot, 0x94, NULL);
while(AFL && AFL->len) {
if (AFL->len % 4) {
PrintAndLogEx(ERR, "Wrong AFL length: %d", AFL->len);
break;
}
for (int i = 0; i < AFL->len / 4; i++) {
uint8_t SFI = AFL->value[i * 4 + 0] >> 3;
uint8_t SFIstart = AFL->value[i * 4 + 1];
uint8_t SFIend = AFL->value[i * 4 + 2];
uint8_t SFIoffline = AFL->value[i * 4 + 3];
PrintAndLogEx(INFO, "--->SFI[%02x] start:%02x end:%02x offline:%02x", SFI, SFIstart, SFIend, SFIoffline);
if (SFI == 0 || SFI == 31 || SFIstart == 0 || SFIstart > SFIend) {
PrintAndLogEx(ERR, "SFI ERROR! Skipped...");
continue;
}
for(int n = SFIstart; n <= SFIend; n++) {
PrintAndLogEx(INFO, "---->SFI[%02x] %d", SFI, n);
res = EMVReadRecord(channel, true, SFI, n, buf, sizeof(buf), &len, &sw, tlvRoot);
if (res) {
PrintAndLogEx(ERR, "SFI[%02x]. APDU error %4x", SFI, sw);
continue;
}
// Build Input list for Offline Data Authentication
// EMV 4.3 book3 10.3, page 96
if (SFIoffline > 0) {
if (SFI < 11) {
const unsigned char *abuf = buf;
size_t elmlen = len;
struct tlv e;
if (tlv_parse_tl(&abuf, &elmlen, &e)) {
memcpy(&ODAiList[ODAiListLen], &buf[len - elmlen], elmlen);
ODAiListLen += elmlen;
} else {
PrintAndLogEx(WARNING, "Error SFI[%02x]. Creating input list for Offline Data Authentication error.", SFI);
}
} else {
memcpy(&ODAiList[ODAiListLen], buf, len);
ODAiListLen += len;
}
SFIoffline--;
}
}
}
break;
}
// copy Input list for Offline Data Authentication
if (ODAiListLen) {
struct tlvdb *oda = tlvdb_fixed(0x21, ODAiListLen, ODAiList); // not a standard tag
tlvdb_add(tlvRoot, oda);
PrintAndLogEx(NORMAL, "* Input list for Offline Data Authentication added to TLV. len=%d \n", ODAiListLen);
}
// getting certificates
if (tlvdb_get(tlvRoot, 0x90, NULL)) {
PrintAndLogEx(INFO, "-->Recovering certificates.");
PKISetStrictExecution(false);
struct emv_pk *pk = get_ca_pk(tlvRoot);
if (!pk) {
PrintAndLogEx(ERR, "CA Public Key not found. Exit.");
goto out;
}
struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
if (!issuer_pk) {
emv_pk_free(pk);
PrintAndLogEx(WARNING, "WARNING: Issuer certificate not found. Exit.");
goto out;
}
char RID[15] = {0};
memcpy(RID, sprint_hex(issuer_pk->rid, 5), 14);
PrintAndLogEx(SUCCESS, "Issuer Public Key recovered. RID %s IDX %02hhx CSN %s",
RID,
issuer_pk->index,
sprint_hex(issuer_pk->serial, 3)
);
const struct tlv *sda_tlv = tlvdb_get(tlvRoot, 0x21, NULL);
struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, sda_tlv);
if (!icc_pk) {
emv_pk_free(pk);
emv_pk_free(issuer_pk);
PrintAndLogEx(WARNING, "WARNING: ICC certificate not found. Exit.");
goto out;
}
memcpy(RID, sprint_hex(icc_pk->rid, 5), 14);
PrintAndLogEx(SUCCESS, "ICC Public Key recovered. RID %s IDX %02hhx CSN %s\n",
RID,
icc_pk->index,
sprint_hex(icc_pk->serial, 3)
);
PrintAndLogEx(INFO, "ICC Public Key modulus: %s\n", sprint_hex_inrow(icc_pk->modulus, icc_pk->mlen));
// icc_pk->exp, icc_pk->elen
// icc_pk->modulus, icc_pk->mlen
if (icc_pk->elen > 0 && icc_pk->mlen > 0) {
if (emv_rocacheck(icc_pk->modulus, icc_pk->mlen, false)) {
PrintAndLogEx(INFO, "ICC Public Key is subject to ROCA vulnerability (it is NOT secure).");
} else {
PrintAndLogEx(INFO, "ICC Public Key is not subject to ROCA vulnerability (it is secure)");
}
}
PKISetStrictExecution(true);
}
out:
// free tlv object
tlvdb_free(tlvRoot);
DropFieldEx( channel );
return 0;
}
int CmdHelp(const char *Cmd);
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"exec", CmdEMVExec, 1, "Executes EMV contactless transaction."},
{"pse", CmdEMVPPSE, 1, "Execute PPSE. It selects 2PAY.SYS.DDF01 or 1PAY.SYS.DDF01 directory."},
{"search", CmdEMVSearch, 1, "Try to select all applets from applets list and print installed applets."},
{"select", CmdEMVSelect, 1, "Select applet."},
{"gpo", CmdEMVGPO, 1, "Execute GetProcessingOptions."},
{"readrec", CmdEMVReadRecord, 1, "Read files from card."},
{"genac", CmdEMVAC, 1, "Generate ApplicationCryptogram."},
{"challenge", CmdEMVGenerateChallenge, 1, "Generate challenge."},
{"intauth", CmdEMVInternalAuthenticate, 1, "Internal authentication."},
{"scan", CmdEMVScan, 1, "Scan EMV card and save it contents to json file for emulator."},
{"test", CmdEMVTest, 1, "Crypto logic test."},
{"roca", CmdEMVRoca, 1, "Extract public keys and run ROCA test"},
{NULL, NULL, 0, NULL}
};
int CmdEMV(const char *Cmd) {
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd) {
CmdsHelp(CommandTable);
return 0;
}
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