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NFC app UI updates, MVP

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noproto 2024-09-03 15:19:12 -04:00
parent 3cb3eab118
commit 92122b2cdf
7 changed files with 115 additions and 10 deletions
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3
applications/main/nfc/nfc_app_i.h
View file

@ -97,6 +97,9 @@ typedef struct {
bool is_key_attack;
uint8_t key_attack_current_sector;
bool is_card_present;
uint8_t nested_phase;
uint8_t prng_type;
uint8_t backdoor;
} NfcMfClassicDictAttackContext;
struct NfcApp {

22
applications/main/nfc/scenes/nfc_scene_mf_classic_dict_attack.c
View file

@ -5,6 +5,8 @@
#define TAG "NfcMfClassicDictAttack"
// TODO: Update progress bar with nested attacks
typedef enum {
DictAttackStateUserDictInProgress,
DictAttackStateSystemDictInProgress,
@ -58,6 +60,9 @@ NfcCommand nfc_dict_attack_worker_callback(NfcGenericEvent event, void* context)
instance->nfc_dict_context.sectors_read = data_update->sectors_read;
instance->nfc_dict_context.keys_found = data_update->keys_found;
instance->nfc_dict_context.current_sector = data_update->current_sector;
instance->nfc_dict_context.nested_phase = data_update->nested_phase;
instance->nfc_dict_context.prng_type = data_update->prng_type;
instance->nfc_dict_context.backdoor = data_update->backdoor;
view_dispatcher_send_custom_event(
instance->view_dispatcher, NfcCustomEventDictAttackDataUpdate);
} else if(mfc_event->type == MfClassicPollerEventTypeNextSector) {
@ -117,6 +122,9 @@ static void nfc_scene_mf_classic_dict_attack_update_view(NfcApp* instance) {
dict_attack_set_keys_found(instance->dict_attack, mfc_dict->keys_found);
dict_attack_set_current_dict_key(instance->dict_attack, mfc_dict->dict_keys_current);
dict_attack_set_current_sector(instance->dict_attack, mfc_dict->current_sector);
dict_attack_set_nested_phase(instance->dict_attack, mfc_dict->nested_phase);
dict_attack_set_prng_type(instance->dict_attack, mfc_dict->prng_type);
dict_attack_set_backdoor(instance->dict_attack, mfc_dict->backdoor);
}
}
@ -125,6 +133,13 @@ static void nfc_scene_mf_classic_dict_attack_prepare_view(NfcApp* instance) {
scene_manager_get_scene_state(instance->scene_manager, NfcSceneMfClassicDictAttack);
if(state == DictAttackStateUserDictInProgress) {
do {
// TODO: Check for errors
storage_common_remove(instance->storage, NFC_APP_MF_CLASSIC_DICT_SYSTEM_NESTED_PATH);
storage_common_copy(
instance->storage,
NFC_APP_MF_CLASSIC_DICT_SYSTEM_PATH,
NFC_APP_MF_CLASSIC_DICT_SYSTEM_NESTED_PATH);
if(!keys_dict_check_presence(NFC_APP_MF_CLASSIC_DICT_USER_PATH)) {
state = DictAttackStateSystemDictInProgress;
break;
@ -149,13 +164,6 @@ static void nfc_scene_mf_classic_dict_attack_prepare_view(NfcApp* instance) {
} while(false);
}
if(state == DictAttackStateSystemDictInProgress) {
// TODO: Check for errors
storage_common_remove(instance->storage, NFC_APP_MF_CLASSIC_DICT_SYSTEM_NESTED_PATH);
storage_common_copy(
instance->storage,
NFC_APP_MF_CLASSIC_DICT_SYSTEM_PATH,
NFC_APP_MF_CLASSIC_DICT_SYSTEM_NESTED_PATH);
instance->nfc_dict_context.dict = keys_dict_alloc(
NFC_APP_MF_CLASSIC_DICT_SYSTEM_PATH, KeysDictModeOpenExisting, sizeof(MfClassicKey));
dict_attack_set_header(instance->dict_attack, "MF Classic System Dictionary");

84
applications/main/nfc/views/dict_attack.c
View file

@ -10,6 +10,30 @@ struct DictAttack {
void* context;
};
typedef enum {
MfClassicNestedPhaseNone,
MfClassicNestedPhaseAnalyzePRNG,
MfClassicNestedPhaseDictAttack,
MfClassicNestedPhaseDictAttackResume,
MfClassicNestedPhaseCalibrate,
MfClassicNestedPhaseCollectNtEnc,
MfClassicNestedPhaseFinished,
} MfClassicNestedPhase;
typedef enum {
MfClassicPrngTypeUnknown, // Tag not yet tested
MfClassicPrngTypeNoTag, // No tag detected during test
MfClassicPrngTypeWeak, // Weak PRNG, standard Nested
MfClassicPrngTypeHard, // Hard PRNG, Hardnested
} MfClassicPrngType;
typedef enum {
MfClassicBackdoorUnknown, // Tag not yet tested
MfClassicBackdoorNone, // No observed backdoor
MfClassicBackdoorAuth1, // Tag responds to v1 auth backdoor
MfClassicBackdoorAuth2, // Tag responds to v2 auth backdoor (static encrypted nonce)
} MfClassicBackdoor;
typedef struct {
FuriString* header;
bool card_detected;
@ -21,6 +45,9 @@ typedef struct {
size_t dict_keys_current;
bool is_key_attack;
uint8_t key_attack_current_sector;
MfClassicNestedPhase nested_phase;
MfClassicPrngType prng_type;
MfClassicBackdoor backdoor;
} DictAttackViewModel;
static void dict_attack_draw_callback(Canvas* canvas, void* model) {
@ -34,8 +61,39 @@ static void dict_attack_draw_callback(Canvas* canvas, void* model) {
} else {
char draw_str[32] = {};
canvas_set_font(canvas, FontSecondary);
switch(m->nested_phase) {
case MfClassicNestedPhaseAnalyzePRNG:
furi_string_set(m->header, "PRNG Analysis");
break;
case MfClassicNestedPhaseDictAttack:
case MfClassicNestedPhaseDictAttackResume:
furi_string_set(m->header, "Nested Dictionary");
break;
case MfClassicNestedPhaseCalibrate:
furi_string_set(m->header, "Calibration");
break;
case MfClassicNestedPhaseCollectNtEnc:
furi_string_set(m->header, "Nonce Collection");
break;
default:
break;
}
if(m->prng_type == MfClassicPrngTypeHard) {
furi_string_cat(m->header, " (Hard)");
}
if(m->backdoor != MfClassicBackdoorNone && m->backdoor != MfClassicBackdoorUnknown) {
if(m->nested_phase != MfClassicNestedPhaseNone) {
furi_string_cat(m->header, " (Backdoor)");
} else {
furi_string_set(m->header, "Backdoor Read");
}
}
canvas_draw_str_aligned(
canvas, 64, 0, AlignCenter, AlignTop, furi_string_get_cstr(m->header));
canvas, 0, 0, AlignLeft, AlignTop, furi_string_get_cstr(m->header));
if(m->is_key_attack) {
snprintf(
draw_str,
@ -132,6 +190,9 @@ void dict_attack_reset(DictAttack* instance) {
model->dict_keys_total = 0;
model->dict_keys_current = 0;
model->is_key_attack = false;
model->nested_phase = MfClassicNestedPhaseNone;
model->prng_type = MfClassicPrngTypeUnknown;
model->backdoor = MfClassicBackdoorUnknown;
furi_string_reset(model->header);
},
false);
@ -242,3 +303,24 @@ void dict_attack_reset_key_attack(DictAttack* instance) {
with_view_model(
instance->view, DictAttackViewModel * model, { model->is_key_attack = false; }, true);
}
void dict_attack_set_nested_phase(DictAttack* instance, uint8_t nested_phase) {
furi_assert(instance);
with_view_model(
instance->view, DictAttackViewModel * model, { model->nested_phase = nested_phase; }, true);
}
void dict_attack_set_prng_type(DictAttack* instance, uint8_t prng_type) {
furi_assert(instance);
with_view_model(
instance->view, DictAttackViewModel * model, { model->prng_type = prng_type; }, true);
}
void dict_attack_set_backdoor(DictAttack* instance, uint8_t backdoor) {
furi_assert(instance);
with_view_model(
instance->view, DictAttackViewModel * model, { model->backdoor = backdoor; }, true);
}

6
applications/main/nfc/views/dict_attack.h
View file

@ -45,6 +45,12 @@ void dict_attack_set_key_attack(DictAttack* instance, uint8_t sector);
void dict_attack_reset_key_attack(DictAttack* instance);
void dict_attack_set_nested_phase(DictAttack* instance, uint8_t nested_phase);
void dict_attack_set_prng_type(DictAttack* instance, uint8_t prng_type);
void dict_attack_set_backdoor(DictAttack* instance, uint8_t backdoor);
#ifdef __cplusplus
}
#endif

6
lib/nfc/protocols/mf_classic/mf_classic_poller.c
View file

@ -68,6 +68,9 @@ static NfcCommand mf_classic_poller_handle_data_update(MfClassicPoller* instance
mf_classic_get_read_sectors_and_keys(
instance->data, &data_update->sectors_read, &data_update->keys_found);
data_update->current_sector = instance->mode_ctx.dict_attack_ctx.current_sector;
data_update->nested_phase = instance->mode_ctx.dict_attack_ctx.nested_phase;
data_update->prng_type = instance->mode_ctx.dict_attack_ctx.prng_type;
data_update->backdoor = instance->mode_ctx.dict_attack_ctx.backdoor;
instance->mfc_event.type = MfClassicPollerEventTypeDataUpdate;
return instance->callback(instance->general_event, instance->context);
}
@ -1723,7 +1726,8 @@ bool is_valid_sum(uint16_t sum) {
NfcCommand mf_classic_poller_handler_nested_controller(MfClassicPoller* instance) {
// Iterate through keys
NfcCommand command = NfcCommandContinue;
//NfcCommand command = NfcCommandContinue;
NfcCommand command = mf_classic_poller_handle_data_update(instance);
MfClassicPollerDictAttackContext* dict_attack_ctx = &instance->mode_ctx.dict_attack_ctx;
bool initial_dict_attack_iter = false;
if(dict_attack_ctx->nested_phase == MfClassicNestedPhaseNone) {

3
lib/nfc/protocols/mf_classic/mf_classic_poller.h
View file

@ -77,6 +77,9 @@ typedef struct {
uint8_t sectors_read; /**< Number of sectors read. */
uint8_t keys_found; /**< Number of keys found. */
uint8_t current_sector; /**< Current sector number. */
uint8_t nested_phase; /**< Nested attack phase. */
uint8_t prng_type; /**< PRNG (weak or hard). */
uint8_t backdoor; /**< Backdoor type. */
} MfClassicPollerEventDataUpdate;
/**

1
lib/nfc/protocols/mf_classic/mf_classic_poller_i.h
View file

@ -52,7 +52,6 @@ typedef enum {
MfClassicNestedPhaseAnalyzePRNG,
MfClassicNestedPhaseDictAttack,
MfClassicNestedPhaseDictAttackResume,
MfClassicNestedPhaseAnalyzeBackdoor,
MfClassicNestedPhaseCalibrate,
MfClassicNestedPhaseCollectNtEnc,
MfClassicNestedPhaseFinished,