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nfc: On-device tag generator (#1319)

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* nfc: Add tag generator base
* nfc: Fix BCC generation
* nfc: Add MFUL EV1 generators
* nfc: Fix typos in generator
* nfc: Add NTAG21x generators
* nfc: More const
* nfc: Add NTAG I2C generators
* nfc: Add field names to generator initializers
* nfc: Move generators to add manually scene
* nfc: Revise tag generator UX
* nfc: Revert add manually menu item name
* nfc: Remove unused scene start submenu index

Co-authored-by: あく <alleteam@gmail.com>
Co-authored-by: gornekich <n.gorbadey@gmail.com>
This commit is contained in:
Yukai Li
2022-07-04 05:16:59 -06:00
committed by GitHub
parent ffd6eda361
commit 0e78f38404
7 changed files with 421 additions and 0 deletions
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327
applications/nfc/helpers/nfc_generators.c Normal file
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@@ -0,0 +1,327 @@
#include <furi_hal_random.h>
#include "nfc_generators.h"
#define NXP_MANUFACTURER_ID (0x04)
static const uint8_t version_bytes_mf0ulx1[] = {0x00, 0x04, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03};
static const uint8_t version_bytes_ntag21x[] = {0x00, 0x04, 0x04, 0x02, 0x01, 0x00, 0x00, 0x03};
static const uint8_t version_bytes_ntag_i2c[] = {0x00, 0x04, 0x04, 0x05, 0x02, 0x00, 0x00, 0x03};
static const uint8_t default_data_ntag213[] = {0x01, 0x03, 0xA0, 0x0C, 0x34, 0x03, 0x00, 0xFE};
static const uint8_t default_data_ntag215_216[] = {0x03, 0x00, 0xFE};
static const uint8_t default_data_ntag_i2c[] = {0xE1, 0x10, 0x00, 0x00, 0x03, 0x00, 0xFE};
static const uint8_t default_config_ntag_i2c[] = {0x01, 0x00, 0xF8, 0x48, 0x08, 0x01, 0x00, 0x00};
static void nfc_generate_common_start(NfcDeviceData* data) {
nfc_device_data_clear(data);
}
static void nfc_generate_mf_ul_uid(uint8_t* uid) {
uid[0] = NXP_MANUFACTURER_ID;
furi_hal_random_fill_buf(&uid[1], 6);
// I'm not sure how this is generated, but the upper nybble always seems to be 8
uid[6] &= 0x0F;
uid[6] |= 0x80;
}
static void nfc_generate_mf_ul_common(NfcDeviceData* data) {
data->nfc_data.type = FuriHalNfcTypeA;
data->nfc_data.interface = FuriHalNfcInterfaceRf;
data->nfc_data.uid_len = 7;
nfc_generate_mf_ul_uid(data->nfc_data.uid);
data->nfc_data.atqa[0] = 0x44;
data->nfc_data.atqa[1] = 0x00;
data->nfc_data.sak = 0x00;
data->protocol = NfcDeviceProtocolMifareUl;
}
static void nfc_generate_calc_bcc(uint8_t* uid, uint8_t* bcc0, uint8_t* bcc1) {
*bcc0 = 0x88 ^ uid[0] ^ uid[1] ^ uid[2];
*bcc1 = uid[3] ^ uid[4] ^ uid[5] ^ uid[6];
}
static void nfc_generate_mf_ul_copy_uid_with_bcc(NfcDeviceData* data) {
MfUltralightData* mful = &data->mf_ul_data;
memcpy(mful->data, data->nfc_data.uid, 3);
memcpy(&mful->data[4], &data->nfc_data.uid[3], 4);
nfc_generate_calc_bcc(data->nfc_data.uid, &mful->data[3], &mful->data[8]);
}
static void nfc_generate_mf_ul_orig(NfcDeviceData* data) {
nfc_generate_common_start(data);
nfc_generate_mf_ul_common(data);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeUnknown;
mful->data_size = 16 * 4;
nfc_generate_mf_ul_copy_uid_with_bcc(data);
// TODO: what's internal byte on page 2?
memset(&mful->data[4 * 4], 0xFF, 4);
}
static void nfc_generate_mf_ul_with_config_common(NfcDeviceData* data, uint8_t num_pages) {
nfc_generate_common_start(data);
nfc_generate_mf_ul_common(data);
MfUltralightData* mful = &data->mf_ul_data;
mful->data_size = num_pages * 4;
nfc_generate_mf_ul_copy_uid_with_bcc(data);
uint16_t config_index = (num_pages - 4) * 4;
mful->data[config_index] = 0x04; // STRG_MOD_EN
mful->data[config_index + 3] = 0xFF; // AUTH0
mful->data[config_index + 5] = 0x05; // VCTID
memset(&mful->data[config_index + 8], 0xFF, 4); // Default PWD
if(num_pages > 20) mful->data[config_index - 1] = MF_UL_TEARING_FLAG_DEFAULT;
}
static void nfc_generate_mf_ul_ev1_common(NfcDeviceData* data, uint8_t num_pages) {
nfc_generate_mf_ul_with_config_common(data, num_pages);
MfUltralightData* mful = &data->mf_ul_data;
memcpy(&mful->version, version_bytes_mf0ulx1, sizeof(version_bytes_mf0ulx1));
for(size_t i = 0; i < 3; ++i) {
mful->tearing[i] = MF_UL_TEARING_FLAG_DEFAULT;
}
// TODO: what's internal byte on page 2?
}
static void nfc_generate_mf_ul_11(NfcDeviceData* data) {
nfc_generate_mf_ul_ev1_common(data, 20);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeUL11;
mful->version.prod_subtype = 0x01;
mful->version.storage_size = 0x0B;
mful->data[16 * 4] = 0x00; // Low capacitance version does not have STRG_MOD_EN
}
static void nfc_generate_mf_ul_h11(NfcDeviceData* data) {
nfc_generate_mf_ul_ev1_common(data, 20);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeUL11;
mful->version.prod_subtype = 0x02;
mful->version.storage_size = 0x0B;
}
static void nfc_generate_mf_ul_21(NfcDeviceData* data) {
nfc_generate_mf_ul_ev1_common(data, 41);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeUL21;
mful->version.prod_subtype = 0x01;
mful->version.storage_size = 0x0E;
mful->data[37 * 4] = 0x00; // Low capacitance version does not have STRG_MOD_EN
}
static void nfc_generate_mf_ul_h21(NfcDeviceData* data) {
nfc_generate_mf_ul_ev1_common(data, 41);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeUL21;
mful->version.prod_subtype = 0x02;
mful->version.storage_size = 0x0E;
}
static void nfc_generate_ntag21x_common(NfcDeviceData* data, uint8_t num_pages) {
nfc_generate_mf_ul_with_config_common(data, num_pages);
MfUltralightData* mful = &data->mf_ul_data;
memcpy(&mful->version, version_bytes_ntag21x, sizeof(version_bytes_mf0ulx1));
mful->data[9] = 0x48; // Internal byte
// Capability container
mful->data[12] = 0xE1;
mful->data[13] = 0x10;
}
static void nfc_generate_ntag213(NfcDeviceData* data) {
nfc_generate_ntag21x_common(data, 45);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeNTAG213;
mful->version.storage_size = 0x0F;
mful->data[14] = 0x12;
// Default contents
memcpy(&mful->data[16], default_data_ntag213, sizeof(default_data_ntag213));
}
static void nfc_generate_ntag215(NfcDeviceData* data) {
nfc_generate_ntag21x_common(data, 135);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeNTAG215;
mful->version.storage_size = 0x11;
mful->data[14] = 0x3E;
// Default contents
memcpy(&mful->data[16], default_data_ntag215_216, sizeof(default_data_ntag215_216));
}
static void nfc_generate_ntag216(NfcDeviceData* data) {
nfc_generate_ntag21x_common(data, 231);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = MfUltralightTypeNTAG216;
mful->version.storage_size = 0x13;
mful->data[14] = 0x6D;
// Default contents
memcpy(&mful->data[16], default_data_ntag215_216, sizeof(default_data_ntag215_216));
}
static void
nfc_generate_ntag_i2c_common(NfcDeviceData* data, MfUltralightType type, uint16_t num_pages) {
nfc_generate_common_start(data);
nfc_generate_mf_ul_common(data);
MfUltralightData* mful = &data->mf_ul_data;
mful->type = type;
memcpy(&mful->version, version_bytes_ntag_i2c, sizeof(version_bytes_ntag_i2c));
mful->data_size = num_pages * 4;
memcpy(mful->data, data->nfc_data.uid, data->nfc_data.uid_len);
mful->data[7] = data->nfc_data.sak;
mful->data[8] = data->nfc_data.atqa[0];
mful->data[9] = data->nfc_data.atqa[1];
uint16_t config_register_page;
uint16_t session_register_page;
// Sync with mifare_ultralight.c
switch(type) {
case MfUltralightTypeNTAGI2C1K:
config_register_page = 227;
session_register_page = 229;
break;
case MfUltralightTypeNTAGI2C2K:
config_register_page = 481;
session_register_page = 483;
break;
case MfUltralightTypeNTAGI2CPlus1K:
case MfUltralightTypeNTAGI2CPlus2K:
config_register_page = 232;
session_register_page = 234;
break;
default:
furi_assert(false);
break;
}
memcpy(
&mful->data[config_register_page * 4],
default_config_ntag_i2c,
sizeof(default_config_ntag_i2c));
memcpy(
&mful->data[session_register_page * 4],
default_config_ntag_i2c,
sizeof(default_config_ntag_i2c));
}
static void nfc_generate_ntag_i2c_1k(NfcDeviceData* data) {
nfc_generate_ntag_i2c_common(data, MfUltralightTypeNTAGI2C1K, 231);
MfUltralightData* mful = &data->mf_ul_data;
mful->version.prod_ver_minor = 0x01;
mful->version.storage_size = 0x13;
memcpy(&mful->data[12], default_data_ntag_i2c, sizeof(default_data_ntag_i2c));
mful->data[14] = 0x6D; // Size of tag in CC
}
static void nfc_generate_ntag_i2c_2k(NfcDeviceData* data) {
nfc_generate_ntag_i2c_common(data, MfUltralightTypeNTAGI2C2K, 485);
MfUltralightData* mful = &data->mf_ul_data;
mful->version.prod_ver_minor = 0x01;
mful->version.storage_size = 0x15;
memcpy(&mful->data[12], default_data_ntag_i2c, sizeof(default_data_ntag_i2c));
mful->data[14] = 0xEA; // Size of tag in CC
}
static void nfc_generate_ntag_i2c_plus_common(
NfcDeviceData* data,
MfUltralightType type,
uint16_t num_pages) {
nfc_generate_ntag_i2c_common(data, type, num_pages);
MfUltralightData* mful = &data->mf_ul_data;
uint16_t config_index = 227 * 4;
mful->data[config_index + 3] = 0xFF; // AUTH0
memset(&mful->data[config_index + 8], 0xFF, 4); // Default PWD
}
static void nfc_generate_ntag_i2c_plus_1k(NfcDeviceData* data) {
nfc_generate_ntag_i2c_plus_common(data, MfUltralightTypeNTAGI2CPlus1K, 236);
MfUltralightData* mful = &data->mf_ul_data;
mful->version.prod_ver_minor = 0x02;
mful->version.storage_size = 0x13;
}
static void nfc_generate_ntag_i2c_plus_2k(NfcDeviceData* data) {
nfc_generate_ntag_i2c_plus_common(data, MfUltralightTypeNTAGI2CPlus2K, 492);
MfUltralightData* mful = &data->mf_ul_data;
mful->version.prod_ver_minor = 0x02;
mful->version.storage_size = 0x15;
}
static const NfcGenerator mf_ul_generator = {
.name = "Mifare Ultralight",
.generator_func = nfc_generate_mf_ul_orig,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator mf_ul_11_generator = {
.name = "Mifare Ultralight EV1 11",
.generator_func = nfc_generate_mf_ul_11,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator mf_ul_h11_generator = {
.name = "Mifare Ultralight EV1 H11",
.generator_func = nfc_generate_mf_ul_h11,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator mf_ul_21_generator = {
.name = "Mifare Ultralight EV1 21",
.generator_func = nfc_generate_mf_ul_21,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator mf_ul_h21_generator = {
.name = "Mifare Ultralight EV1 H21",
.generator_func = nfc_generate_mf_ul_h21,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator ntag213_generator = {
.name = "NTAG213",
.generator_func = nfc_generate_ntag213,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator ntag215_generator = {
.name = "NTAG215",
.generator_func = nfc_generate_ntag215,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator ntag216_generator = {
.name = "NTAG216",
.generator_func = nfc_generate_ntag216,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator ntag_i2c_1k_generator = {
.name = "NTAG I2C 1k",
.generator_func = nfc_generate_ntag_i2c_1k,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator ntag_i2c_2k_generator = {
.name = "NTAG I2C 2k",
.generator_func = nfc_generate_ntag_i2c_2k,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator ntag_i2c_plus_1k_generator = {
.name = "NTAG I2C Plus 1k",
.generator_func = nfc_generate_ntag_i2c_plus_1k,
.next_scene = NfcSceneMifareUlMenu};
static const NfcGenerator ntag_i2c_plus_2k_generator = {
.name = "NTAG I2C Plus 2k",
.generator_func = nfc_generate_ntag_i2c_plus_2k,
.next_scene = NfcSceneMifareUlMenu};
const NfcGenerator* const nfc_generators[] = {
&mf_ul_generator,
&mf_ul_11_generator,
&mf_ul_h11_generator,
&mf_ul_21_generator,
&mf_ul_h21_generator,
&ntag213_generator,
&ntag215_generator,
&ntag216_generator,
&ntag_i2c_1k_generator,
&ntag_i2c_2k_generator,
&ntag_i2c_plus_1k_generator,
&ntag_i2c_plus_2k_generator,
NULL,
};

13
applications/nfc/helpers/nfc_generators.h Normal file
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@@ -0,0 +1,13 @@
#pragma once
#include "../nfc_i.h"
typedef void (*NfcGeneratorFunc)(NfcDeviceData* data);
struct NfcGenerator {
const char* name;
NfcGeneratorFunc generator_func;
NfcScene next_scene;
};
extern const NfcGenerator* const nfc_generators[];

3
applications/nfc/nfc.c
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@@ -84,6 +84,9 @@ Nfc* nfc_alloc() {
view_dispatcher_add_view(
nfc->view_dispatcher, NfcViewDictAttack, dict_attack_get_view(nfc->dict_attack));
// Generator
nfc->generator = NULL;
return nfc;
}

5
applications/nfc/nfc_i.h
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@@ -33,6 +33,9 @@
#define NFC_SEND_NOTIFICATION_TRUE (1UL)
#define NFC_TEXT_STORE_SIZE 128
// Forward declaration due to circular dependency
typedef struct NfcGenerator NfcGenerator;
struct Nfc {
NfcWorker* worker;
ViewDispatcher* view_dispatcher;
@@ -55,6 +58,8 @@ struct Nfc {
Widget* widget;
BankCard* bank_card;
DictAttack* dict_attack;
const NfcGenerator* generator;
};
typedef enum {

1
applications/nfc/scenes/nfc_scene_config.h
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@@ -37,3 +37,4 @@ ADD_SCENE(nfc, read_mifare_classic, ReadMifareClassic)
ADD_SCENE(nfc, emulate_mifare_classic, EmulateMifareClassic)
ADD_SCENE(nfc, mifare_classic_menu, MifareClassicMenu)
ADD_SCENE(nfc, dict_not_found, DictNotFound)
ADD_SCENE(nfc, generate_info, GenerateInfo)

55
applications/nfc/scenes/nfc_scene_generate_info.c Normal file
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@@ -0,0 +1,55 @@
#include "../nfc_i.h"
#include "../helpers/nfc_generators.h"
void nfc_scene_generate_info_dialog_callback(DialogExResult result, void* context) {
Nfc* nfc = context;
view_dispatcher_send_custom_event(nfc->view_dispatcher, result);
}
void nfc_scene_generate_info_on_enter(void* context) {
Nfc* nfc = context;
// Setup dialog view
FuriHalNfcDevData* data = &nfc->dev->dev_data.nfc_data;
DialogEx* dialog_ex = nfc->dialog_ex;
dialog_ex_set_right_button_text(dialog_ex, "More");
// Create info text
string_t info_str;
string_init_printf(
info_str, "%s\n%s\nUID:", nfc->generator->name, nfc_get_dev_type(data->type));
// Append UID
for(int i = 0; i < data->uid_len; ++i) {
string_cat_printf(info_str, " %02X", data->uid[i]);
}
nfc_text_store_set(nfc, string_get_cstr(info_str));
string_clear(info_str);
dialog_ex_set_text(dialog_ex, nfc->text_store, 0, 0, AlignLeft, AlignTop);
dialog_ex_set_context(dialog_ex, nfc);
dialog_ex_set_result_callback(dialog_ex, nfc_scene_generate_info_dialog_callback);
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewDialogEx);
}
bool nfc_scene_generate_info_on_event(void* context, SceneManagerEvent event) {
Nfc* nfc = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == DialogExResultRight) {
scene_manager_next_scene(nfc->scene_manager, nfc->generator->next_scene);
consumed = true;
}
}
return consumed;
}
void nfc_scene_generate_info_on_exit(void* context) {
Nfc* nfc = context;
// Clean views
dialog_ex_reset(nfc->dialog_ex);
}

17
applications/nfc/scenes/nfc_scene_set_type.c Executable file → Normal file
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@@ -1,9 +1,11 @@
#include "../nfc_i.h"
#include "m-string.h"
#include "../helpers/nfc_generators.h"
enum SubmenuIndex {
SubmenuIndexNFCA4,
SubmenuIndexNFCA7,
SubmenuIndexGeneratorsStart,
};
void nfc_scene_set_type_submenu_callback(void* context, uint32_t index) {
@@ -22,6 +24,14 @@ void nfc_scene_set_type_on_enter(void* context) {
submenu, "NFC-A 7-bytes UID", SubmenuIndexNFCA7, nfc_scene_set_type_submenu_callback, nfc);
submenu_add_item(
submenu, "NFC-A 4-bytes UID", SubmenuIndexNFCA4, nfc_scene_set_type_submenu_callback, nfc);
// Generators
int i = SubmenuIndexGeneratorsStart;
for(const NfcGenerator* const* generator = nfc_generators; *generator != NULL;
++generator, ++i) {
submenu_add_item(submenu, (*generator)->name, i, nfc_scene_set_type_submenu_callback, nfc);
}
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewMenu);
}
@@ -40,6 +50,13 @@ bool nfc_scene_set_type_on_event(void* context, SceneManagerEvent event) {
nfc->dev->format = NfcDeviceSaveFormatUid;
scene_manager_next_scene(nfc->scene_manager, NfcSceneSetSak);
consumed = true;
} else {
nfc_device_clear(nfc->dev);
nfc->generator = nfc_generators[event.event - SubmenuIndexGeneratorsStart];
nfc->generator->generator_func(&nfc->dev->dev_data);
scene_manager_next_scene(nfc->scene_manager, NfcSceneGenerateInfo);
consumed = true;
}
}
return consumed;