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[FL-2933] Mf Classic initial write, update, detect reader (#1941)

Browse source 
* nfc: introduce nfc write
* nfc: add write logic
* nfc worker: add write state
* nfc: add mfc update logic
* nfc: add update success logic
* nfc: add custom card for detect reader
* nfc: update write logic
* nfc: add halt command, add notifications
* nfc: add write fail scene
* nfc: fixes and clean up
* nfc: fix navigation ad notifications
* nfc: fix detect reader nfc data setter

Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
gornekich 2022-10-28 20:10:16 +04:00 committed by GitHub
parent 09b622d4ae
commit 93a6e17ce5
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
23 changed files with 949 additions and 93 deletions
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6
applications/main/nfc/scenes/nfc_scene_config.h
View file

@ -36,6 +36,12 @@ ADD_SCENE(nfc, mf_classic_keys_list, MfClassicKeysList)
ADD_SCENE(nfc, mf_classic_keys_delete, MfClassicKeysDelete)
ADD_SCENE(nfc, mf_classic_keys_warn_duplicate, MfClassicKeysWarnDuplicate)
ADD_SCENE(nfc, mf_classic_dict_attack, MfClassicDictAttack)
ADD_SCENE(nfc, mf_classic_write, MfClassicWrite)
ADD_SCENE(nfc, mf_classic_write_success, MfClassicWriteSuccess)
ADD_SCENE(nfc, mf_classic_write_fail, MfClassicWriteFail)
ADD_SCENE(nfc, mf_classic_update, MfClassicUpdate)
ADD_SCENE(nfc, mf_classic_update_success, MfClassicUpdateSuccess)
ADD_SCENE(nfc, mf_classic_wrong_card, MfClassicWrongCard)
ADD_SCENE(nfc, emv_read_success, EmvReadSuccess)
ADD_SCENE(nfc, emv_menu, EmvMenu)
ADD_SCENE(nfc, emulate_apdu_sequence, EmulateApduSequence)

5
applications/main/nfc/scenes/nfc_scene_detect_reader.c
View file

@ -28,6 +28,11 @@ void nfc_scene_detect_reader_on_enter(void* context) {
detect_reader_set_callback(nfc->detect_reader, nfc_scene_detect_reader_callback, nfc);
detect_reader_set_nonces_max(nfc->detect_reader, NFC_SCENE_DETECT_READER_PAIR_NONCES_MAX);
NfcDeviceData* dev_data = &nfc->dev->dev_data;
if(dev_data->nfc_data.uid_len) {
detect_reader_set_uid(
nfc->detect_reader, dev_data->nfc_data.uid, dev_data->nfc_data.uid_len);
}
// Store number of collected nonces in scene state
scene_manager_set_scene_state(nfc->scene_manager, NfcSceneDetectReader, 0);

98
applications/main/nfc/scenes/nfc_scene_mf_classic_update.c Normal file
View file

@ -0,0 +1,98 @@
#include "../nfc_i.h"
#include <dolphin/dolphin.h>
enum {
NfcSceneMfClassicUpdateStateCardSearch,
NfcSceneMfClassicUpdateStateCardFound,
};
bool nfc_mf_classic_update_worker_callback(NfcWorkerEvent event, void* context) {
furi_assert(context);
Nfc* nfc = context;
view_dispatcher_send_custom_event(nfc->view_dispatcher, event);
return true;
}
static void nfc_scene_mf_classic_update_setup_view(Nfc* nfc) {
Popup* popup = nfc->popup;
popup_reset(popup);
uint32_t state = scene_manager_get_scene_state(nfc->scene_manager, NfcSceneMfClassicUpdate);
if(state == NfcSceneMfClassicUpdateStateCardSearch) {
popup_set_text(
nfc->popup, "Apply the initial\ncard only", 128, 32, AlignRight, AlignCenter);
popup_set_icon(nfc->popup, 0, 8, &I_NFC_manual_60x50);
} else {
popup_set_header(popup, "Updating\nDon't move...", 52, 32, AlignLeft, AlignCenter);
popup_set_icon(popup, 12, 23, &A_Loading_24);
}
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewPopup);
}
void nfc_scene_mf_classic_update_on_enter(void* context) {
Nfc* nfc = context;
DOLPHIN_DEED(DolphinDeedNfcEmulate);
scene_manager_set_scene_state(
nfc->scene_manager, NfcSceneMfClassicUpdate, NfcSceneMfClassicUpdateStateCardSearch);
nfc_scene_mf_classic_update_setup_view(nfc);
// Setup and start worker
nfc_worker_start(
nfc->worker,
NfcWorkerStateMfClassicUpdate,
&nfc->dev->dev_data,
nfc_mf_classic_update_worker_callback,
nfc);
nfc_blink_emulate_start(nfc);
}
bool nfc_scene_mf_classic_update_on_event(void* context, SceneManagerEvent event) {
Nfc* nfc = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == NfcWorkerEventSuccess) {
nfc_worker_stop(nfc->worker);
if(nfc_device_save_shadow(nfc->dev, nfc->dev->dev_name)) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicUpdateSuccess);
} else {
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicWrongCard);
}
consumed = true;
} else if(event.event == NfcWorkerEventWrongCard) {
nfc_worker_stop(nfc->worker);
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicWrongCard);
consumed = true;
} else if(event.event == NfcWorkerEventCardDetected) {
scene_manager_set_scene_state(
nfc->scene_manager,
NfcSceneMfClassicUpdate,
NfcSceneMfClassicUpdateStateCardFound);
nfc_scene_mf_classic_update_setup_view(nfc);
consumed = true;
} else if(event.event == NfcWorkerEventNoCardDetected) {
scene_manager_set_scene_state(
nfc->scene_manager,
NfcSceneMfClassicUpdate,
NfcSceneMfClassicUpdateStateCardSearch);
nfc_scene_mf_classic_update_setup_view(nfc);
consumed = true;
}
}
return consumed;
}
void nfc_scene_mf_classic_update_on_exit(void* context) {
Nfc* nfc = context;
nfc_worker_stop(nfc->worker);
scene_manager_set_scene_state(
nfc->scene_manager, NfcSceneMfClassicUpdate, NfcSceneMfClassicUpdateStateCardSearch);
// Clear view
popup_reset(nfc->popup);
nfc_blink_stop(nfc);
}

44
applications/main/nfc/scenes/nfc_scene_mf_classic_update_success.c Normal file
View file

@ -0,0 +1,44 @@
#include "../nfc_i.h"
#include <dolphin/dolphin.h>
void nfc_scene_mf_classic_update_success_popup_callback(void* context) {
Nfc* nfc = context;
view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventViewExit);
}
void nfc_scene_mf_classic_update_success_on_enter(void* context) {
Nfc* nfc = context;
DOLPHIN_DEED(DolphinDeedNfcSave);
notification_message(nfc->notifications, &sequence_success);
Popup* popup = nfc->popup;
popup_set_icon(popup, 32, 5, &I_DolphinNice_96x59);
popup_set_header(popup, "Updated!", 11, 20, AlignLeft, AlignBottom);
popup_set_timeout(popup, 1500);
popup_set_context(popup, nfc);
popup_set_callback(popup, nfc_scene_mf_classic_update_success_popup_callback);
popup_enable_timeout(popup);
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewPopup);
}
bool nfc_scene_mf_classic_update_success_on_event(void* context, SceneManagerEvent event) {
Nfc* nfc = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == NfcCustomEventViewExit) {
consumed = scene_manager_search_and_switch_to_previous_scene(
nfc->scene_manager, NfcSceneFileSelect);
}
}
return consumed;
}
void nfc_scene_mf_classic_update_success_on_exit(void* context) {
Nfc* nfc = context;
// Clear view
popup_reset(nfc->popup);
}

92
applications/main/nfc/scenes/nfc_scene_mf_classic_write.c Normal file
View file

@ -0,0 +1,92 @@
#include "../nfc_i.h"
#include <dolphin/dolphin.h>
enum {
NfcSceneMfClassicWriteStateCardSearch,
NfcSceneMfClassicWriteStateCardFound,
};
bool nfc_mf_classic_write_worker_callback(NfcWorkerEvent event, void* context) {
furi_assert(context);
Nfc* nfc = context;
view_dispatcher_send_custom_event(nfc->view_dispatcher, event);
return true;
}
static void nfc_scene_mf_classic_write_setup_view(Nfc* nfc) {
Popup* popup = nfc->popup;
popup_reset(popup);
uint32_t state = scene_manager_get_scene_state(nfc->scene_manager, NfcSceneMfClassicWrite);
if(state == NfcSceneMfClassicWriteStateCardSearch) {
popup_set_text(
nfc->popup, "Apply the initial\ncard only", 128, 32, AlignRight, AlignCenter);
popup_set_icon(nfc->popup, 0, 8, &I_NFC_manual_60x50);
} else {
popup_set_header(popup, "Writing\nDon't move...", 52, 32, AlignLeft, AlignCenter);
popup_set_icon(popup, 12, 23, &A_Loading_24);
}
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewPopup);
}
void nfc_scene_mf_classic_write_on_enter(void* context) {
Nfc* nfc = context;
DOLPHIN_DEED(DolphinDeedNfcEmulate);
scene_manager_set_scene_state(
nfc->scene_manager, NfcSceneMfClassicWrite, NfcSceneMfClassicWriteStateCardSearch);
nfc_scene_mf_classic_write_setup_view(nfc);
// Setup and start worker
nfc_worker_start(
nfc->worker,
NfcWorkerStateMfClassicWrite,
&nfc->dev->dev_data,
nfc_mf_classic_write_worker_callback,
nfc);
nfc_blink_emulate_start(nfc);
}
bool nfc_scene_mf_classic_write_on_event(void* context, SceneManagerEvent event) {
Nfc* nfc = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == NfcWorkerEventSuccess) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicWriteSuccess);
consumed = true;
} else if(event.event == NfcWorkerEventFail) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicWriteFail);
consumed = true;
} else if(event.event == NfcWorkerEventWrongCard) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicWrongCard);
consumed = true;
} else if(event.event == NfcWorkerEventCardDetected) {
scene_manager_set_scene_state(
nfc->scene_manager, NfcSceneMfClassicWrite, NfcSceneMfClassicWriteStateCardFound);
nfc_scene_mf_classic_write_setup_view(nfc);
consumed = true;
} else if(event.event == NfcWorkerEventNoCardDetected) {
scene_manager_set_scene_state(
nfc->scene_manager, NfcSceneMfClassicWrite, NfcSceneMfClassicWriteStateCardSearch);
nfc_scene_mf_classic_write_setup_view(nfc);
consumed = true;
}
}
return consumed;
}
void nfc_scene_mf_classic_write_on_exit(void* context) {
Nfc* nfc = context;
nfc_worker_stop(nfc->worker);
scene_manager_set_scene_state(
nfc->scene_manager, NfcSceneMfClassicWrite, NfcSceneMfClassicWriteStateCardSearch);
// Clear view
popup_reset(nfc->popup);
nfc_blink_stop(nfc);
}

58
applications/main/nfc/scenes/nfc_scene_mf_classic_write_fail.c Normal file
View file

@ -0,0 +1,58 @@
#include "../nfc_i.h"
void nfc_scene_mf_classic_write_fail_widget_callback(
GuiButtonType result,
InputType type,
void* context) {
Nfc* nfc = context;
if(type == InputTypeShort) {
view_dispatcher_send_custom_event(nfc->view_dispatcher, result);
}
}
void nfc_scene_mf_classic_write_fail_on_enter(void* context) {
Nfc* nfc = context;
Widget* widget = nfc->widget;
notification_message(nfc->notifications, &sequence_error);
widget_add_icon_element(widget, 72, 17, &I_DolphinCommon_56x48);
widget_add_string_element(
widget, 7, 4, AlignLeft, AlignTop, FontPrimary, "Writing gone wrong!");
widget_add_string_multiline_element(
widget,
7,
17,
AlignLeft,
AlignTop,
FontSecondary,
"Not all sectors\nwere written\ncorrectly.");
widget_add_button_element(
widget, GuiButtonTypeLeft, "Finish", nfc_scene_mf_classic_write_fail_widget_callback, nfc);
// Setup and start worker
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewWidget);
}
bool nfc_scene_mf_classic_write_fail_on_event(void* context, SceneManagerEvent event) {
Nfc* nfc = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == GuiButtonTypeLeft) {
consumed = scene_manager_search_and_switch_to_previous_scene(
nfc->scene_manager, NfcSceneFileSelect);
}
} else if(event.type == SceneManagerEventTypeBack) {
consumed = scene_manager_search_and_switch_to_previous_scene(
nfc->scene_manager, NfcSceneSavedMenu);
}
return consumed;
}
void nfc_scene_mf_classic_write_fail_on_exit(void* context) {
Nfc* nfc = context;
widget_reset(nfc->widget);
}

44
applications/main/nfc/scenes/nfc_scene_mf_classic_write_success.c Normal file
View file

@ -0,0 +1,44 @@
#include "../nfc_i.h"
#include <dolphin/dolphin.h>
void nfc_scene_mf_classic_write_success_popup_callback(void* context) {
Nfc* nfc = context;
view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventViewExit);
}
void nfc_scene_mf_classic_write_success_on_enter(void* context) {
Nfc* nfc = context;
DOLPHIN_DEED(DolphinDeedNfcSave);
notification_message(nfc->notifications, &sequence_success);
Popup* popup = nfc->popup;
popup_set_icon(popup, 32, 5, &I_DolphinNice_96x59);
popup_set_header(popup, "Successfully\nwritten", 13, 22, AlignLeft, AlignBottom);
popup_set_timeout(popup, 1500);
popup_set_context(popup, nfc);
popup_set_callback(popup, nfc_scene_mf_classic_write_success_popup_callback);
popup_enable_timeout(popup);
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewPopup);
}
bool nfc_scene_mf_classic_write_success_on_event(void* context, SceneManagerEvent event) {
Nfc* nfc = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == NfcCustomEventViewExit) {
consumed = scene_manager_search_and_switch_to_previous_scene(
nfc->scene_manager, NfcSceneFileSelect);
}
}
return consumed;
}
void nfc_scene_mf_classic_write_success_on_exit(void* context) {
Nfc* nfc = context;
// Clear view
popup_reset(nfc->popup);
}

53
applications/main/nfc/scenes/nfc_scene_mf_classic_wrong_card.c Normal file
View file

@ -0,0 +1,53 @@
#include "../nfc_i.h"
void nfc_scene_mf_classic_wrong_card_widget_callback(
GuiButtonType result,
InputType type,
void* context) {
Nfc* nfc = context;
if(type == InputTypeShort) {
view_dispatcher_send_custom_event(nfc->view_dispatcher, result);
}
}
void nfc_scene_mf_classic_wrong_card_on_enter(void* context) {
Nfc* nfc = context;
Widget* widget = nfc->widget;
notification_message(nfc->notifications, &sequence_error);
widget_add_icon_element(widget, 73, 17, &I_DolphinCommon_56x48);
widget_add_string_element(
widget, 3, 4, AlignLeft, AlignTop, FontPrimary, "This is wrong card");
widget_add_string_multiline_element(
widget,
4,
17,
AlignLeft,
AlignTop,
FontSecondary,
"Data management\nis only possible\nwith initial card");
widget_add_button_element(
widget, GuiButtonTypeLeft, "Retry", nfc_scene_mf_classic_wrong_card_widget_callback, nfc);
// Setup and start worker
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewWidget);
}
bool nfc_scene_mf_classic_wrong_card_on_event(void* context, SceneManagerEvent event) {
Nfc* nfc = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == GuiButtonTypeLeft) {
consumed = scene_manager_previous_scene(nfc->scene_manager);
}
}
return consumed;
}
void nfc_scene_mf_classic_wrong_card_on_exit(void* context) {
Nfc* nfc = context;
widget_reset(nfc->widget);
}

34
applications/main/nfc/scenes/nfc_scene_saved_menu.c
View file

@ -4,6 +4,9 @@
enum SubmenuIndex {
SubmenuIndexEmulate,
SubmenuIndexEditUid,
SubmenuIndexDetectReader,
SubmenuIndexWrite,
SubmenuIndexUpdate,
SubmenuIndexRename,
SubmenuIndexDelete,
SubmenuIndexInfo,
@ -42,6 +45,28 @@ void nfc_scene_saved_menu_on_enter(void* context) {
submenu_add_item(
submenu, "Emulate", SubmenuIndexEmulate, nfc_scene_saved_menu_submenu_callback, nfc);
}
if(nfc->dev->format == NfcDeviceSaveFormatMifareClassic) {
if(!mf_classic_is_card_read(&nfc->dev->dev_data.mf_classic_data)) {
submenu_add_item(
submenu,
"Detect reader",
SubmenuIndexDetectReader,
nfc_scene_saved_menu_submenu_callback,
nfc);
}
submenu_add_item(
submenu,
"Write To Initial Card",
SubmenuIndexWrite,
nfc_scene_saved_menu_submenu_callback,
nfc);
submenu_add_item(
submenu,
"Update From Initial Card",
SubmenuIndexUpdate,
nfc_scene_saved_menu_submenu_callback,
nfc);
}
submenu_add_item(
submenu, "Info", SubmenuIndexInfo, nfc_scene_saved_menu_submenu_callback, nfc);
if(nfc->dev->shadow_file_exist) {
@ -79,6 +104,15 @@ bool nfc_scene_saved_menu_on_event(void* context, SceneManagerEvent event) {
}
DOLPHIN_DEED(DolphinDeedNfcEmulate);
consumed = true;
} else if(event.event == SubmenuIndexDetectReader) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneDetectReader);
consumed = true;
} else if(event.event == SubmenuIndexWrite) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicWrite);
consumed = true;
} else if(event.event == SubmenuIndexUpdate) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneMfClassicUpdate);
consumed = true;
} else if(event.event == SubmenuIndexRename) {
scene_manager_next_scene(nfc->scene_manager, NfcSceneSaveName);
consumed = true;

1
applications/main/nfc/scenes/nfc_scene_start.c
View file

@ -53,6 +53,7 @@ bool nfc_scene_start_on_event(void* context, SceneManagerEvent event) {
} else if(event.event == SubmenuIndexDetectReader) {
bool sd_exist = storage_sd_status(nfc->dev->storage) == FSE_OK;
if(sd_exist) {
nfc_device_data_clear(&nfc->dev->dev_data);
scene_manager_next_scene(nfc->scene_manager, NfcSceneDetectReader);
DOLPHIN_DEED(DolphinDeedNfcDetectReader);
} else {

36
applications/main/nfc/views/detect_reader.c
View file

@ -2,6 +2,8 @@
#include <assets_icons.h>
#include <gui/elements.h>
#define DETECT_READER_UID_MAX_LEN (10)
struct DetectReader {
View* view;
DetectReaderDoneCallback callback;
@ -12,6 +14,7 @@ typedef struct {
uint16_t nonces;
uint16_t nonces_max;
DetectReaderState state;
FuriString* uid_str;
} DetectReaderViewModel;
static void detect_reader_draw_callback(Canvas* canvas, void* model) {
@ -23,6 +26,10 @@ static void detect_reader_draw_callback(Canvas* canvas, void* model) {
if(m->state == DetectReaderStateStart) {
snprintf(text, sizeof(text), "Touch the reader");
canvas_draw_icon(canvas, 21, 13, &I_Move_flipper_26x39);
if(furi_string_size(m->uid_str)) {
elements_multiline_text_aligned(
canvas, 64, 64, AlignCenter, AlignBottom, furi_string_get_cstr(m->uid_str));
}
} else if(m->state == DetectReaderStateReaderDetected) {
snprintf(text, sizeof(text), "Move the Flipper away");
canvas_draw_icon(canvas, 24, 25, &I_Release_arrow_18x15);
@ -86,12 +93,24 @@ DetectReader* detect_reader_alloc() {
view_set_input_callback(detect_reader->view, detect_reader_input_callback);
view_set_context(detect_reader->view, detect_reader);
with_view_model(
detect_reader->view,
DetectReaderViewModel * model,
{ model->uid_str = furi_string_alloc(); },
false);
return detect_reader;
}
void detect_reader_free(DetectReader* detect_reader) {
furi_assert(detect_reader);
with_view_model(
detect_reader->view,
DetectReaderViewModel * model,
{ furi_string_free(model->uid_str); },
false);
view_free(detect_reader->view);
free(detect_reader);
}
@ -106,6 +125,7 @@ void detect_reader_reset(DetectReader* detect_reader) {
model->nonces = 0;
model->nonces_max = 0;
model->state = DetectReaderStateStart;
furi_string_reset(model->uid_str);
},
false);
}
@ -152,3 +172,19 @@ void detect_reader_set_state(DetectReader* detect_reader, DetectReaderState stat
with_view_model(
detect_reader->view, DetectReaderViewModel * model, { model->state = state; }, true);
}
void detect_reader_set_uid(DetectReader* detect_reader, uint8_t* uid, uint8_t uid_len) {
furi_assert(detect_reader);
furi_assert(uid);
furi_assert(uid_len < DETECT_READER_UID_MAX_LEN);
with_view_model(
detect_reader->view,
DetectReaderViewModel * model,
{
furi_string_set_str(model->uid_str, "UID:");
for(size_t i = 0; i < uid_len; i++) {
furi_string_cat_printf(model->uid_str, " %02X", uid[i]);
}
},
true);
}

2
applications/main/nfc/views/detect_reader.h
View file

@ -32,3 +32,5 @@ void detect_reader_set_nonces_max(DetectReader* detect_reader, uint16_t nonces_m
void detect_reader_set_nonces_collected(DetectReader* detect_reader, uint16_t nonces_collected);
void detect_reader_set_state(DetectReader* detect_reader, DetectReaderState state);
void detect_reader_set_uid(DetectReader* detect_reader, uint8_t* uid, uint8_t uid_len);

10
firmware/targets/f7/furi_hal/furi_hal_nfc.c
View file

@ -620,6 +620,10 @@ uint16_t furi_hal_nfc_bitstream_to_data_and_parity(
uint16_t in_buff_bits,
uint8_t* out_data,
uint8_t* out_parity) {
if(in_buff_bits < 8) {
out_data[0] = in_buff[0];
return in_buff_bits;
}
if(in_buff_bits % 9 != 0) {
return 0;
}
@ -635,7 +639,7 @@ uint16_t furi_hal_nfc_bitstream_to_data_and_parity(
bit_processed += 9;
curr_byte++;
}
return curr_byte;
return curr_byte * 8;
}
bool furi_hal_nfc_tx_rx(FuriHalNfcTxRxContext* tx_rx, uint16_t timeout_ms) {
@ -692,8 +696,8 @@ bool furi_hal_nfc_tx_rx(FuriHalNfcTxRxContext* tx_rx, uint16_t timeout_ms) {
if(tx_rx->tx_rx_type == FuriHalNfcTxRxTypeRaw ||
tx_rx->tx_rx_type == FuriHalNfcTxRxTypeRxRaw) {
tx_rx->rx_bits = 8 * furi_hal_nfc_bitstream_to_data_and_parity(
temp_rx_buff, *temp_rx_bits, tx_rx->rx_data, tx_rx->rx_parity);
tx_rx->rx_bits = furi_hal_nfc_bitstream_to_data_and_parity(
temp_rx_buff, *temp_rx_bits, tx_rx->rx_data, tx_rx->rx_parity);
} else {
memcpy(tx_rx->rx_data, temp_rx_buff, MIN(*temp_rx_bits / 8, FURI_HAL_NFC_DATA_BUFF_SIZE));
tx_rx->rx_bits = *temp_rx_bits;

9
lib/nfc/helpers/reader_analyzer.c
View file

@ -201,10 +201,17 @@ NfcProtocol
FuriHalNfcDevData* reader_analyzer_get_nfc_data(ReaderAnalyzer* instance) {
furi_assert(instance);
instance->nfc_data = reader_analyzer_nfc_data[ReaderAnalyzerNfcDataMfClassic];
return &instance->nfc_data;
}
void reader_analyzer_set_nfc_data(ReaderAnalyzer* instance, FuriHalNfcDevData* nfc_data) {
furi_assert(instance);
furi_assert(nfc_data);
memcpy(&instance->nfc_data, nfc_data, sizeof(FuriHalNfcDevData));
}
static void reader_analyzer_write(
ReaderAnalyzer* instance,
uint8_t* data,

2
lib/nfc/helpers/reader_analyzer.h
View file

@ -35,6 +35,8 @@ NfcProtocol
FuriHalNfcDevData* reader_analyzer_get_nfc_data(ReaderAnalyzer* instance);
void reader_analyzer_set_nfc_data(ReaderAnalyzer* instance, FuriHalNfcDevData* nfc_data);
void reader_analyzer_prepare_tx_rx(
ReaderAnalyzer* instance,
FuriHalNfcTxRxContext* tx_rx,

7
lib/nfc/nfc_device.c
View file

@ -1122,6 +1122,13 @@ static bool nfc_device_load_data(NfcDevice* dev, FuriString* path, bool show_dia
if(!flipper_format_read_hex(file, "UID", data->uid, data->uid_len)) break;
if(!flipper_format_read_hex(file, "ATQA", data->atqa, 2)) break;
if(!flipper_format_read_hex(file, "SAK", &data->sak, 1)) break;
// Load CUID
uint8_t* cuid_start = data->uid;
if(data->uid_len == 7) {
cuid_start = &data->uid[3];
}
data->cuid = (cuid_start[0] << 24) | (cuid_start[1] << 16) | (cuid_start[2] << 8) |
(cuid_start[3]);
// Parse other data
if(dev->format == NfcDeviceSaveFormatMifareUl) {
if(!nfc_device_load_mifare_ul_data(file, dev)) break;

150
lib/nfc/nfc_worker.c
View file

@ -99,6 +99,10 @@ int32_t nfc_worker_task(void* context) {
nfc_worker_emulate_mf_ultralight(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateMfClassicEmulate) {
nfc_worker_emulate_mf_classic(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateMfClassicWrite) {
nfc_worker_write_mf_classic(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateMfClassicUpdate) {
nfc_worker_update_mf_classic(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadMfUltralightReadAuth) {
nfc_worker_mf_ultralight_read_auth(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateMfClassicDictAttack) {
@ -666,6 +670,144 @@ void nfc_worker_emulate_mf_classic(NfcWorker* nfc_worker) {
rfal_platform_spi_release();
}
void nfc_worker_write_mf_classic(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
bool card_found_notified = false;
FuriHalNfcDevData nfc_data = {};
MfClassicData* src_data = &nfc_worker->dev_data->mf_classic_data;
MfClassicData dest_data = *src_data;
while(nfc_worker->state == NfcWorkerStateMfClassicWrite) {
if(furi_hal_nfc_detect(&nfc_data, 200)) {
if(!card_found_notified) {
nfc_worker->callback(NfcWorkerEventCardDetected, nfc_worker->context);
card_found_notified = true;
}
furi_hal_nfc_sleep();
FURI_LOG_I(TAG, "Check low level nfc data");
if(memcmp(&nfc_data, &nfc_worker->dev_data->nfc_data, sizeof(FuriHalNfcDevData))) {
FURI_LOG_E(TAG, "Wrong card");
nfc_worker->callback(NfcWorkerEventWrongCard, nfc_worker->context);
break;
}
FURI_LOG_I(TAG, "Check mf classic type");
MfClassicType type =
mf_classic_get_classic_type(nfc_data.atqa[0], nfc_data.atqa[1], nfc_data.sak);
if(type != nfc_worker->dev_data->mf_classic_data.type) {
FURI_LOG_E(TAG, "Wrong mf classic type");
nfc_worker->callback(NfcWorkerEventWrongCard, nfc_worker->context);
break;
}
// Set blocks not read
mf_classic_set_sector_data_not_read(&dest_data);
FURI_LOG_I(TAG, "Updating card sectors");
uint8_t total_sectors = mf_classic_get_total_sectors_num(type);
bool write_success = true;
for(uint8_t i = 0; i < total_sectors; i++) {
FURI_LOG_I(TAG, "Reading sector %d", i);
mf_classic_read_sector(&tx_rx, &dest_data, i);
bool old_data_read = mf_classic_is_sector_data_read(src_data, i);
bool new_data_read = mf_classic_is_sector_data_read(&dest_data, i);
if(old_data_read != new_data_read) {
FURI_LOG_E(TAG, "Failed to update sector %d", i);
write_success = false;
break;
}
if(nfc_worker->state != NfcWorkerStateMfClassicWrite) break;
if(!mf_classic_write_sector(&tx_rx, &dest_data, src_data, i)) {
FURI_LOG_E(TAG, "Failed to write %d sector", i);
write_success = false;
break;
}
}
if(nfc_worker->state != NfcWorkerStateMfClassicWrite) break;
if(write_success) {
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
break;
} else {
nfc_worker->callback(NfcWorkerEventFail, nfc_worker->context);
break;
}
} else {
if(card_found_notified) {
nfc_worker->callback(NfcWorkerEventNoCardDetected, nfc_worker->context);
card_found_notified = false;
}
}
furi_delay_ms(300);
}
}
void nfc_worker_update_mf_classic(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
bool card_found_notified = false;
FuriHalNfcDevData nfc_data = {};
MfClassicData* old_data = &nfc_worker->dev_data->mf_classic_data;
MfClassicData new_data = *old_data;
while(nfc_worker->state == NfcWorkerStateMfClassicUpdate) {
if(furi_hal_nfc_detect(&nfc_data, 200)) {
if(!card_found_notified) {
nfc_worker->callback(NfcWorkerEventCardDetected, nfc_worker->context);
card_found_notified = true;
}
furi_hal_nfc_sleep();
FURI_LOG_I(TAG, "Check low level nfc data");
if(memcmp(&nfc_data, &nfc_worker->dev_data->nfc_data, sizeof(FuriHalNfcDevData))) {
FURI_LOG_E(TAG, "Low level nfc data mismatch");
nfc_worker->callback(NfcWorkerEventWrongCard, nfc_worker->context);
break;
}
FURI_LOG_I(TAG, "Check MF classic type");
MfClassicType type =
mf_classic_get_classic_type(nfc_data.atqa[0], nfc_data.atqa[1], nfc_data.sak);
if(type != nfc_worker->dev_data->mf_classic_data.type) {
FURI_LOG_E(TAG, "MF classic type mismatch");
nfc_worker->callback(NfcWorkerEventWrongCard, nfc_worker->context);
break;
}
// Set blocks not read
mf_classic_set_sector_data_not_read(&new_data);
FURI_LOG_I(TAG, "Updating card sectors");
uint8_t total_sectors = mf_classic_get_total_sectors_num(type);
bool update_success = true;
for(uint8_t i = 0; i < total_sectors; i++) {
FURI_LOG_I(TAG, "Reading sector %d", i);
mf_classic_read_sector(&tx_rx, &new_data, i);
bool old_data_read = mf_classic_is_sector_data_read(old_data, i);
bool new_data_read = mf_classic_is_sector_data_read(&new_data, i);
if(old_data_read != new_data_read) {
FURI_LOG_E(TAG, "Failed to update sector %d", i);
update_success = false;
break;
}
if(nfc_worker->state != NfcWorkerStateMfClassicUpdate) break;
}
if(nfc_worker->state != NfcWorkerStateMfClassicUpdate) break;
// Check updated data
if(update_success) {
*old_data = new_data;
nfc_worker->callback(NfcWorkerEventSuccess, nfc_worker->context);
break;
}
} else {
if(card_found_notified) {
nfc_worker->callback(NfcWorkerEventNoCardDetected, nfc_worker->context);
card_found_notified = false;
}
}
furi_delay_ms(300);
}
}
void nfc_worker_mf_ultralight_read_auth(NfcWorker* nfc_worker) {
furi_assert(nfc_worker);
furi_assert(nfc_worker->callback);
@ -758,7 +900,13 @@ void nfc_worker_analyze_reader(NfcWorker* nfc_worker) {
FuriHalNfcTxRxContext tx_rx = {};
ReaderAnalyzer* reader_analyzer = nfc_worker->reader_analyzer;
FuriHalNfcDevData* nfc_data = reader_analyzer_get_nfc_data(reader_analyzer);
FuriHalNfcDevData* nfc_data = NULL;
if(nfc_worker->dev_data->protocol == NfcDeviceProtocolMifareClassic) {
nfc_data = &nfc_worker->dev_data->nfc_data;
reader_analyzer_set_nfc_data(reader_analyzer, nfc_data);
} else {
nfc_data = reader_analyzer_get_nfc_data(reader_analyzer);
}
MfClassicEmulator emulator = {
.cuid = nfc_util_bytes2num(&nfc_data->uid[nfc_data->uid_len - 4], 4),
.data = nfc_worker->dev_data->mf_classic_data,

7
lib/nfc/nfc_worker.h
View file

@ -14,6 +14,8 @@ typedef enum {
NfcWorkerStateUidEmulate,
NfcWorkerStateMfUltralightEmulate,
NfcWorkerStateMfClassicEmulate,
NfcWorkerStateMfClassicWrite,
NfcWorkerStateMfClassicUpdate,
NfcWorkerStateReadMfUltralightReadAuth,
NfcWorkerStateMfClassicDictAttack,
NfcWorkerStateAnalyzeReader,
@ -48,13 +50,16 @@ typedef enum {
NfcWorkerEventNoCardDetected,
NfcWorkerEventWrongCardDetected,
// Mifare Classic events
// Read Mifare Classic events
NfcWorkerEventNoDictFound,
NfcWorkerEventNewSector,
NfcWorkerEventNewDictKeyBatch,
NfcWorkerEventFoundKeyA,
NfcWorkerEventFoundKeyB,
// Write Mifare Classic events
NfcWorkerEventWrongCard,
// Detect Reader events
NfcWorkerEventDetectReaderDetected,
NfcWorkerEventDetectReaderLost,

4
lib/nfc/nfc_worker_i.h
View file

@ -41,6 +41,10 @@ void nfc_worker_emulate_mf_ultralight(NfcWorker* nfc_worker);
void nfc_worker_emulate_mf_classic(NfcWorker* nfc_worker);
void nfc_worker_write_mf_classic(NfcWorker* nfc_worker);
void nfc_worker_update_mf_classic(NfcWorker* nfc_worker);
void nfc_worker_mf_classic_dict_attack(NfcWorker* nfc_worker);
void nfc_worker_mf_ultralight_read_auth(NfcWorker* nfc_worker);

52
lib/nfc/protocols/crypto1.c
View file

@ -73,3 +73,55 @@ uint32_t prng_successor(uint32_t x, uint32_t n) {
return SWAPENDIAN(x);
}
void crypto1_decrypt(
Crypto1* crypto,
uint8_t* encrypted_data,
uint16_t encrypted_data_bits,
uint8_t* decrypted_data) {
furi_assert(crypto);
furi_assert(encrypted_data);
furi_assert(decrypted_data);
if(encrypted_data_bits < 8) {
uint8_t decrypted_byte = 0;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 0)) << 0;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 1)) << 1;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 2)) << 2;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 3)) << 3;
decrypted_data[0] = decrypted_byte;
} else {
for(size_t i = 0; i < encrypted_data_bits / 8; i++) {
decrypted_data[i] = crypto1_byte(crypto, 0, 0) ^ encrypted_data[i];
}
}
}
void crypto1_encrypt(
Crypto1* crypto,
uint8_t* keystream,
uint8_t* plain_data,
uint16_t plain_data_bits,
uint8_t* encrypted_data,
uint8_t* encrypted_parity) {
furi_assert(crypto);
furi_assert(plain_data);
furi_assert(encrypted_data);
furi_assert(encrypted_parity);
if(plain_data_bits < 8) {
encrypted_data[0] = 0;
for(size_t i = 0; i < plain_data_bits; i++) {
encrypted_data[0] |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(plain_data[0], i)) << i;
}
} else {
memset(encrypted_parity, 0, plain_data_bits / 8 + 1);
for(uint8_t i = 0; i < plain_data_bits / 8; i++) {
encrypted_data[i] = crypto1_byte(crypto, keystream ? keystream[i] : 0, 0) ^
plain_data[i];
encrypted_parity[i / 8] |=
(((crypto1_filter(crypto->odd) ^ nfc_util_odd_parity8(plain_data[i])) & 0x01)
<< (7 - (i & 0x0007)));
}
}
}

14
lib/nfc/protocols/crypto1.h
View file

@ -21,3 +21,17 @@ uint32_t crypto1_word(Crypto1* crypto1, uint32_t in, int is_encrypted);
uint32_t crypto1_filter(uint32_t in);
uint32_t prng_successor(uint32_t x, uint32_t n);
void crypto1_decrypt(
Crypto1* crypto,
uint8_t* encrypted_data,
uint16_t encrypted_data_bits,
uint8_t* decrypted_data);
void crypto1_encrypt(
Crypto1* crypto,
uint8_t* keystream,
uint8_t* plain_data,
uint16_t plain_data_bits,
uint8_t* encrypted_data,
uint8_t* encrypted_parity);

271
lib/nfc/protocols/mifare_classic.c
View file

@ -9,21 +9,8 @@
#define MF_CLASSIC_AUTH_KEY_A_CMD (0x60U)
#define MF_CLASSIC_AUTH_KEY_B_CMD (0x61U)
#define MF_CLASSIC_READ_SECT_CMD (0x30)
typedef enum {
MfClassicActionDataRead,
MfClassicActionDataWrite,
MfClassicActionDataInc,
MfClassicActionDataDec,
MfClassicActionKeyARead,
MfClassicActionKeyAWrite,
MfClassicActionKeyBRead,
MfClassicActionKeyBWrite,
MfClassicActionACRead,
MfClassicActionACWrite,
} MfClassicAction;
#define MF_CLASSIC_READ_BLOCK_CMD (0x30)
#define MF_CLASSIC_WRITE_BLOCK_CMD (0xA0)
const char* mf_classic_get_type_str(MfClassicType type) {
if(type == MfClassicType1k) {
@ -122,6 +109,24 @@ void mf_classic_set_block_read(MfClassicData* data, uint8_t block_num, MfClassic
FURI_BIT_SET(data->block_read_mask[block_num / 32], block_num % 32);
}
bool mf_classic_is_sector_data_read(MfClassicData* data, uint8_t sector_num) {
furi_assert(data);
uint8_t first_block = mf_classic_get_first_block_num_of_sector(sector_num);
uint8_t total_blocks = mf_classic_get_blocks_num_in_sector(sector_num);
bool data_read = true;
for(size_t i = first_block; i < first_block + total_blocks; i++) {
data_read &= mf_classic_is_block_read(data, i);
}
return data_read;
}
void mf_classic_set_sector_data_not_read(MfClassicData* data) {
furi_assert(data);
memset(data->block_read_mask, 0, sizeof(data->block_read_mask));
}
bool mf_classic_is_key_found(MfClassicData* data, uint8_t sector_num, MfClassicKey key_type) {
furi_assert(data);
@ -190,6 +195,9 @@ void mf_classic_get_read_sectors_and_keys(
uint8_t* sectors_read,
uint8_t* keys_found) {
furi_assert(data);
furi_assert(sectors_read);
furi_assert(keys_found);
*sectors_read = 0;
*keys_found = 0;
uint8_t sectors_total = mf_classic_get_total_sectors_num(data->type);
@ -225,12 +233,12 @@ bool mf_classic_is_card_read(MfClassicData* data) {
return card_read;
}
static bool mf_classic_is_allowed_access_sector_trailer(
MfClassicEmulator* emulator,
bool mf_classic_is_allowed_access_sector_trailer(
MfClassicData* data,
uint8_t block_num,
MfClassicKey key,
MfClassicAction action) {
uint8_t* sector_trailer = emulator->data.block[block_num].value;
uint8_t* sector_trailer = data->block[block_num].value;
uint8_t AC = ((sector_trailer[7] >> 5) & 0x04) | ((sector_trailer[8] >> 2) & 0x02) |
((sector_trailer[8] >> 7) & 0x01);
switch(action) {
@ -266,13 +274,13 @@ static bool mf_classic_is_allowed_access_sector_trailer(
return true;
}
static bool mf_classic_is_allowed_access_data_block(
MfClassicEmulator* emulator,
bool mf_classic_is_allowed_access_data_block(
MfClassicData* data,
uint8_t block_num,
MfClassicKey key,
MfClassicAction action) {
uint8_t* sector_trailer =
emulator->data.block[mf_classic_get_sector_trailer_num_by_block(block_num)].value;
data->block[mf_classic_get_sector_trailer_num_by_block(block_num)].value;
uint8_t sector_block;
if(block_num <= 128) {
@ -336,9 +344,10 @@ static bool mf_classic_is_allowed_access(
MfClassicKey key,
MfClassicAction action) {
if(mf_classic_is_sector_trailer(block_num)) {
return mf_classic_is_allowed_access_sector_trailer(emulator, block_num, key, action);
return mf_classic_is_allowed_access_sector_trailer(
&emulator->data, block_num, key, action);
} else {
return mf_classic_is_allowed_access_data_block(emulator, block_num, key, action);
return mf_classic_is_allowed_access_data_block(&emulator->data, block_num, key, action);
}
}
@ -514,25 +523,17 @@ bool mf_classic_read_block(
furi_assert(block);
bool read_block_success = false;
uint8_t plain_cmd[4] = {MF_CLASSIC_READ_SECT_CMD, block_num, 0x00, 0x00};
uint8_t plain_cmd[4] = {MF_CLASSIC_READ_BLOCK_CMD, block_num, 0x00, 0x00};
nfca_append_crc16(plain_cmd, 2);
memset(tx_rx->tx_data, 0, sizeof(tx_rx->tx_data));
memset(tx_rx->tx_parity, 0, sizeof(tx_rx->tx_parity));
for(uint8_t i = 0; i < 4; i++) {
tx_rx->tx_data[i] = crypto1_byte(crypto, 0x00, 0) ^ plain_cmd[i];
tx_rx->tx_parity[0] |=
((crypto1_filter(crypto->odd) ^ nfc_util_odd_parity8(plain_cmd[i])) & 0x01) << (7 - i);
}
crypto1_encrypt(crypto, NULL, plain_cmd, 4 * 8, tx_rx->tx_data, tx_rx->tx_parity);
tx_rx->tx_bits = 4 * 9;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeRaw;
if(furi_hal_nfc_tx_rx(tx_rx, 50)) {
if(tx_rx->rx_bits == 8 * (MF_CLASSIC_BLOCK_SIZE + 2)) {
uint8_t block_received[MF_CLASSIC_BLOCK_SIZE + 2];
for(uint8_t i = 0; i < MF_CLASSIC_BLOCK_SIZE + 2; i++) {
block_received[i] = crypto1_byte(crypto, 0, 0) ^ tx_rx->rx_data[i];
}
crypto1_decrypt(crypto, tx_rx->rx_data, tx_rx->rx_bits, block_received);
uint16_t crc_calc = nfca_get_crc16(block_received, MF_CLASSIC_BLOCK_SIZE);
uint16_t crc_received = (block_received[MF_CLASSIC_BLOCK_SIZE + 1] << 8) |
block_received[MF_CLASSIC_BLOCK_SIZE];
@ -754,49 +755,6 @@ uint8_t mf_classic_update_card(FuriHalNfcTxRxContext* tx_rx, MfClassicData* data
return sectors_read;
}
void mf_crypto1_decrypt(
Crypto1* crypto,
uint8_t* encrypted_data,
uint16_t encrypted_data_bits,
uint8_t* decrypted_data) {
if(encrypted_data_bits < 8) {
uint8_t decrypted_byte = 0;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 0)) << 0;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 1)) << 1;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 2)) << 2;
decrypted_byte |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(encrypted_data[0], 3)) << 3;
decrypted_data[0] = decrypted_byte;
} else {
for(size_t i = 0; i < encrypted_data_bits / 8; i++) {
decrypted_data[i] = crypto1_byte(crypto, 0, 0) ^ encrypted_data[i];
}
}
}
void mf_crypto1_encrypt(
Crypto1* crypto,
uint8_t* keystream,
uint8_t* plain_data,
uint16_t plain_data_bits,
uint8_t* encrypted_data,
uint8_t* encrypted_parity) {
if(plain_data_bits < 8) {
encrypted_data[0] = 0;
for(size_t i = 0; i < plain_data_bits; i++) {
encrypted_data[0] |= (crypto1_bit(crypto, 0, 0) ^ FURI_BIT(plain_data[0], i)) << i;
}
} else {
memset(encrypted_parity, 0, plain_data_bits / 8 + 1);
for(uint8_t i = 0; i < plain_data_bits / 8; i++) {
encrypted_data[i] = crypto1_byte(crypto, keystream ? keystream[i] : 0, 0) ^
plain_data[i];
encrypted_parity[i / 8] |=
(((crypto1_filter(crypto->odd) ^ nfc_util_odd_parity8(plain_data[i])) & 0x01)
<< (7 - (i & 0x0007)));
}
}
}
bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_rx) {
furi_assert(emulator);
furi_assert(tx_rx);
@ -819,7 +777,7 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
tx_rx->rx_bits);
break;
}
mf_crypto1_decrypt(&emulator->crypto, tx_rx->rx_data, tx_rx->rx_bits, plain_data);
crypto1_decrypt(&emulator->crypto, tx_rx->rx_data, tx_rx->rx_bits, plain_data);
}
if(plain_data[0] == 0x50 && plain_data[1] == 0x00) {
@ -857,7 +815,7 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
tx_rx->tx_bits = sizeof(nt) * 8;
tx_rx->tx_rx_type = FuriHalNfcTxRxTransparent;
} else {
mf_crypto1_encrypt(
crypto1_encrypt(
&emulator->crypto,
nt_keystream,
nt,
@ -904,7 +862,7 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
uint32_t ans = prng_successor(nonce, 96);
uint8_t responce[4] = {};
nfc_util_num2bytes(ans, 4, responce);
mf_crypto1_encrypt(
crypto1_encrypt(
&emulator->crypto,
NULL,
responce,
@ -938,7 +896,7 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
// Send NACK
uint8_t nack = 0x04;
if(is_encrypted) {
mf_crypto1_encrypt(
crypto1_encrypt(
&emulator->crypto, NULL, &nack, 4, tx_rx->tx_data, tx_rx->tx_parity);
} else {
tx_rx->tx_data[0] = nack;
@ -951,7 +909,7 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
}
nfca_append_crc16(block_data, 16);
mf_crypto1_encrypt(
crypto1_encrypt(
&emulator->crypto,
NULL,
block_data,
@ -967,14 +925,14 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
}
// Send ACK
uint8_t ack = 0x0A;
mf_crypto1_encrypt(&emulator->crypto, NULL, &ack, 4, tx_rx->tx_data, tx_rx->tx_parity);
crypto1_encrypt(&emulator->crypto, NULL, &ack, 4, tx_rx->tx_data, tx_rx->tx_parity);
tx_rx->tx_rx_type = FuriHalNfcTxRxTransparent;
tx_rx->tx_bits = 4;
if(!furi_hal_nfc_tx_rx(tx_rx, 300)) break;
if(tx_rx->rx_bits != 18 * 8) break;
mf_crypto1_decrypt(&emulator->crypto, tx_rx->rx_data, tx_rx->rx_bits, plain_data);
crypto1_decrypt(&emulator->crypto, tx_rx->rx_data, tx_rx->rx_bits, plain_data);
uint8_t block_data[16] = {};
memcpy(block_data, emulator->data.block[block].value, MF_CLASSIC_BLOCK_SIZE);
if(mf_classic_is_sector_trailer(block)) {
@ -1002,7 +960,7 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
}
// Send ACK
ack = 0x0A;
mf_crypto1_encrypt(&emulator->crypto, NULL, &ack, 4, tx_rx->tx_data, tx_rx->tx_parity);
crypto1_encrypt(&emulator->crypto, NULL, &ack, 4, tx_rx->tx_data, tx_rx->tx_parity);
tx_rx->tx_rx_type = FuriHalNfcTxRxTransparent;
tx_rx->tx_bits = 4;
} else {
@ -1015,8 +973,7 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
// Send NACK
uint8_t nack = 0x04;
if(is_encrypted) {
mf_crypto1_encrypt(
&emulator->crypto, NULL, &nack, 4, tx_rx->tx_data, tx_rx->tx_parity);
crypto1_encrypt(&emulator->crypto, NULL, &nack, 4, tx_rx->tx_data, tx_rx->tx_parity);
} else {
tx_rx->tx_data[0] = nack;
}
@ -1027,3 +984,143 @@ bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_
return true;
}
bool mf_classic_write_block(
FuriHalNfcTxRxContext* tx_rx,
MfClassicBlock* src_block,
uint8_t block_num,
MfClassicKey key_type,
uint64_t key) {
furi_assert(tx_rx);
furi_assert(src_block);
Crypto1 crypto = {};
uint8_t plain_data[18] = {};
uint8_t resp = 0;
bool write_success = false;
do {
furi_hal_nfc_sleep();
if(!mf_classic_auth(tx_rx, block_num, key, key_type, &crypto)) {
FURI_LOG_D(TAG, "Auth fail");
break;
}
// Send write command
plain_data[0] = MF_CLASSIC_WRITE_BLOCK_CMD;
plain_data[1] = block_num;
nfca_append_crc16(plain_data, 2);
crypto1_encrypt(&crypto, NULL, plain_data, 4 * 8, tx_rx->tx_data, tx_rx->tx_parity);
tx_rx->tx_bits = 4 * 8;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeRaw;
if(furi_hal_nfc_tx_rx(tx_rx, 50)) {
if(tx_rx->rx_bits == 4) {
crypto1_decrypt(&crypto, tx_rx->rx_data, 4, &resp);
if(resp != 0x0A) {
FURI_LOG_D(TAG, "NACK received on write cmd: %02X", resp);
break;
}
} else {
FURI_LOG_D(TAG, "Not ACK received");
break;
}
} else {
FURI_LOG_D(TAG, "Failed to send write cmd");
break;
}
// Send data
memcpy(plain_data, src_block->value, MF_CLASSIC_BLOCK_SIZE);
nfca_append_crc16(plain_data, MF_CLASSIC_BLOCK_SIZE);
crypto1_encrypt(
&crypto,
NULL,
plain_data,
(MF_CLASSIC_BLOCK_SIZE + 2) * 8,
tx_rx->tx_data,
tx_rx->tx_parity);
tx_rx->tx_bits = (MF_CLASSIC_BLOCK_SIZE + 2) * 8;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeRaw;
if(furi_hal_nfc_tx_rx(tx_rx, 50)) {
if(tx_rx->rx_bits == 4) {
crypto1_decrypt(&crypto, tx_rx->rx_data, 4, &resp);
if(resp != 0x0A) {
FURI_LOG_D(TAG, "NACK received on sending data");
break;
}
} else {
FURI_LOG_D(TAG, "Not ACK received");
break;
}
} else {
FURI_LOG_D(TAG, "Failed to send data");
break;
}
write_success = true;
// Send Halt
plain_data[0] = 0x50;
plain_data[1] = 0x00;
nfca_append_crc16(plain_data, 2);
crypto1_encrypt(&crypto, NULL, plain_data, 2 * 8, tx_rx->tx_data, tx_rx->tx_parity);
tx_rx->tx_bits = 2 * 8;
tx_rx->tx_rx_type = FuriHalNfcTxRxTypeRaw;
// No response is expected
furi_hal_nfc_tx_rx(tx_rx, 50);
} while(false);
return write_success;
}
bool mf_classic_write_sector(
FuriHalNfcTxRxContext* tx_rx,
MfClassicData* dest_data,
MfClassicData* src_data,
uint8_t sec_num) {
furi_assert(tx_rx);
furi_assert(dest_data);
furi_assert(src_data);
uint8_t first_block = mf_classic_get_first_block_num_of_sector(sec_num);
uint8_t total_blocks = mf_classic_get_blocks_num_in_sector(sec_num);
MfClassicSectorTrailer* sec_tr = mf_classic_get_sector_trailer_by_sector(dest_data, sec_num);
bool key_a_found = mf_classic_is_key_found(dest_data, sec_num, MfClassicKeyA);
bool key_b_found = mf_classic_is_key_found(dest_data, sec_num, MfClassicKeyB);
bool write_success = true;
for(size_t i = first_block; i < first_block + total_blocks; i++) {
// Compare blocks
if(memcmp(dest_data->block[i].value, src_data->block[i].value, MF_CLASSIC_BLOCK_SIZE)) {
bool key_a_write_allowed = mf_classic_is_allowed_access_data_block(
dest_data, i, MfClassicKeyA, MfClassicActionDataWrite);
bool key_b_write_allowed = mf_classic_is_allowed_access_data_block(
dest_data, i, MfClassicKeyB, MfClassicActionDataWrite);
if(key_a_found && key_a_write_allowed) {
FURI_LOG_I(TAG, "Writing block %d with key A", i);
uint64_t key = nfc_util_bytes2num(sec_tr->key_a, 6);
if(!mf_classic_write_block(tx_rx, &src_data->block[i], i, MfClassicKeyA, key)) {
FURI_LOG_E(TAG, "Failed to write block %d", i);
write_success = false;
break;
}
} else if(key_b_found && key_b_write_allowed) {
FURI_LOG_I(TAG, "Writing block %d with key A", i);
uint64_t key = nfc_util_bytes2num(sec_tr->key_b, 6);
if(!mf_classic_write_block(tx_rx, &src_data->block[i], i, MfClassicKeyB, key)) {
FURI_LOG_E(TAG, "Failed to write block %d", i);
write_success = false;
break;
}
} else {
FURI_LOG_E(TAG, "Failed to find key with write access");
write_success = false;
break;
}
} else {
FURI_LOG_D(TAG, "Blocks %d are equal", i);
}
}
return write_success;
}

43
lib/nfc/protocols/mifare_classic.h
View file

@ -27,6 +27,20 @@ typedef enum {
MfClassicKeyB,
} MfClassicKey;
typedef enum {
MfClassicActionDataRead,
MfClassicActionDataWrite,
MfClassicActionDataInc,
MfClassicActionDataDec,
MfClassicActionKeyARead,
MfClassicActionKeyAWrite,
MfClassicActionKeyBRead,
MfClassicActionKeyBWrite,
MfClassicActionACRead,
MfClassicActionACWrite,
} MfClassicAction;
typedef struct {
uint8_t value[MF_CLASSIC_BLOCK_SIZE];
} MfClassicBlock;
@ -90,6 +104,18 @@ bool mf_classic_is_sector_trailer(uint8_t block);
uint8_t mf_classic_get_sector_by_block(uint8_t block);
bool mf_classic_is_allowed_access_sector_trailer(
MfClassicData* data,
uint8_t block_num,
MfClassicKey key,
MfClassicAction action);
bool mf_classic_is_allowed_access_data_block(
MfClassicData* data,
uint8_t block_num,
MfClassicKey key,
MfClassicAction action);
bool mf_classic_is_key_found(MfClassicData* data, uint8_t sector_num, MfClassicKey key_type);
void mf_classic_set_key_found(
@ -104,6 +130,10 @@ bool mf_classic_is_block_read(MfClassicData* data, uint8_t block_num);
void mf_classic_set_block_read(MfClassicData* data, uint8_t block_num, MfClassicBlock* block_data);
bool mf_classic_is_sector_data_read(MfClassicData* data, uint8_t sector_num);
void mf_classic_set_sector_data_not_read(MfClassicData* data);
bool mf_classic_is_sector_read(MfClassicData* data, uint8_t sector_num);
bool mf_classic_is_card_read(MfClassicData* data);
@ -145,3 +175,16 @@ uint8_t mf_classic_read_card(
uint8_t mf_classic_update_card(FuriHalNfcTxRxContext* tx_rx, MfClassicData* data);
bool mf_classic_emulator(MfClassicEmulator* emulator, FuriHalNfcTxRxContext* tx_rx);
bool mf_classic_write_block(
FuriHalNfcTxRxContext* tx_rx,
MfClassicBlock* src_block,
uint8_t block_num,
MfClassicKey key_type,
uint64_t key);
bool mf_classic_write_sector(
FuriHalNfcTxRxContext* tx_rx,
MfClassicData* dest_data,
MfClassicData* src_data,
uint8_t sec_num);