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Support reseting iCx cards (#2451)

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* Support reseting iCx cards
* add submenu
* Fix auth
* switch key derivation to use same method
* test system keys using both elite and standard kdf

Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
Eric Betts 2023-03-07 02:53:52 -08:00 committed by GitHub
parent 9dd1fb64b7
commit eefca9f498
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 161 additions and 25 deletions
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59
applications/plugins/picopass/picopass_worker.c
View file

@ -7,6 +7,9 @@
const uint8_t picopass_iclass_key[] = {0xaf, 0xa7, 0x85, 0xa7, 0xda, 0xb3, 0x33, 0x78};
const uint8_t picopass_factory_credit_key[] = {0x76, 0x65, 0x54, 0x43, 0x32, 0x21, 0x10, 0x00};
const uint8_t picopass_factory_debit_key[] = {0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87};
const uint8_t picopass_xice_key[] = {0x20, 0x20, 0x66, 0x66, 0x66, 0x66, 0x88, 0x88};
const uint8_t picopass_xicl_key[] = {0x20, 0x20, 0x66, 0x66, 0x66, 0x66, 0x88, 0x88};
const uint8_t picopass_xics_key[] = {0x66, 0x66, 0x20, 0x20, 0x66, 0x66, 0x88, 0x88};
static void picopass_worker_enable_field() {
furi_hal_nfc_ll_txrx_on();
@ -192,7 +195,7 @@ static ReturnCode picopass_auth_standard(uint8_t* csn, uint8_t* div_key) {
}
memcpy(ccnr, rcRes.CCNR, sizeof(rcRes.CCNR)); // last 4 bytes left 0
loclass_diversifyKey(csn, picopass_iclass_key, div_key);
loclass_iclass_calc_div_key(csn, (uint8_t*)picopass_iclass_key, div_key, false);
loclass_opt_doReaderMAC(ccnr, div_key, mac);
return rfalPicoPassPollerCheck(mac, &chkRes);
@ -214,7 +217,7 @@ static ReturnCode picopass_auth_factory(uint8_t* csn, uint8_t* div_key) {
}
memcpy(ccnr, rcRes.CCNR, sizeof(rcRes.CCNR)); // last 4 bytes left 0
loclass_diversifyKey(csn, picopass_factory_debit_key, div_key);
loclass_iclass_calc_div_key(csn, (uint8_t*)picopass_factory_debit_key, div_key, false);
loclass_opt_doReaderMAC(ccnr, div_key, mac);
return rfalPicoPassPollerCheck(mac, &chkRes);
@ -224,7 +227,8 @@ static ReturnCode picopass_auth_dict(
uint8_t* csn,
PicopassPacs* pacs,
uint8_t* div_key,
IclassEliteDictType dict_type) {
IclassEliteDictType dict_type,
bool elite) {
rfalPicoPassReadCheckRes rcRes;
rfalPicoPassCheckRes chkRes;
@ -269,7 +273,7 @@ static ReturnCode picopass_auth_dict(
}
memcpy(ccnr, rcRes.CCNR, sizeof(rcRes.CCNR)); // last 4 bytes left 0
loclass_iclass_calc_div_key(csn, key, div_key, true);
loclass_iclass_calc_div_key(csn, key, div_key, elite);
loclass_opt_doReaderMAC(ccnr, div_key, mac);
err = rfalPicoPassPollerCheck(mac, &chkRes);
@ -303,22 +307,35 @@ ReturnCode picopass_auth(PicopassBlock* AA1, PicopassPacs* pacs) {
return ERR_NONE;
}
FURI_LOG_I(TAG, "Starting user dictionary attack");
FURI_LOG_I(TAG, "Starting user dictionary attack [Elite KDF]");
err = picopass_auth_dict(
AA1[PICOPASS_CSN_BLOCK_INDEX].data,
pacs,
AA1[PICOPASS_KD_BLOCK_INDEX].data,
IclassEliteDictTypeUser);
IclassEliteDictTypeUser,
true);
if(err == ERR_NONE) {
return ERR_NONE;
}
FURI_LOG_I(TAG, "Starting system dictionary attack");
FURI_LOG_I(TAG, "Starting system dictionary attack [Elite KDF]");
err = picopass_auth_dict(
AA1[PICOPASS_CSN_BLOCK_INDEX].data,
pacs,
AA1[PICOPASS_KD_BLOCK_INDEX].data,
IclassEliteDictTypeFlipper);
IclassEliteDictTypeFlipper,
true);
if(err == ERR_NONE) {
return ERR_NONE;
}
FURI_LOG_I(TAG, "Starting system dictionary attack [Standard KDF]");
err = picopass_auth_dict(
AA1[PICOPASS_CSN_BLOCK_INDEX].data,
pacs,
AA1[PICOPASS_KD_BLOCK_INDEX].data,
IclassEliteDictTypeFlipper,
false);
if(err == ERR_NONE) {
return ERR_NONE;
}
@ -396,7 +413,7 @@ ReturnCode picopass_write_card(PicopassBlock* AA1) {
}
memcpy(ccnr, rcRes.CCNR, sizeof(rcRes.CCNR)); // last 4 bytes left 0
loclass_diversifyKey(selRes.CSN, picopass_iclass_key, div_key);
loclass_iclass_calc_div_key(selRes.CSN, (uint8_t*)picopass_iclass_key, div_key, false);
loclass_opt_doReaderMAC(ccnr, div_key, mac);
err = rfalPicoPassPollerCheck(mac, &chkRes);
@ -438,7 +455,7 @@ ReturnCode picopass_write_card(PicopassBlock* AA1) {
return ERR_NONE;
}
ReturnCode picopass_write_block(PicopassPacs* pacs, uint8_t blockNo, uint8_t* newBlock) {
ReturnCode picopass_write_block(PicopassBlock* AA1, uint8_t blockNo, uint8_t* newBlock) {
rfalPicoPassIdentifyRes idRes;
rfalPicoPassSelectRes selRes;
rfalPicoPassReadCheckRes rcRes;
@ -446,7 +463,6 @@ ReturnCode picopass_write_block(PicopassPacs* pacs, uint8_t blockNo, uint8_t* ne
ReturnCode err;
uint8_t div_key[8] = {0};
uint8_t mac[4] = {0};
uint8_t ccnr[12] = {0};
@ -469,9 +485,12 @@ ReturnCode picopass_write_block(PicopassPacs* pacs, uint8_t blockNo, uint8_t* ne
}
memcpy(ccnr, rcRes.CCNR, sizeof(rcRes.CCNR)); // last 4 bytes left 0
loclass_diversifyKey(selRes.CSN, pacs->key, div_key);
loclass_opt_doReaderMAC(ccnr, div_key, mac);
if(memcmp(selRes.CSN, AA1[PICOPASS_CSN_BLOCK_INDEX].data, PICOPASS_BLOCK_LEN) != 0) {
FURI_LOG_E(TAG, "Wrong CSN for write");
return ERR_REQUEST;
}
loclass_opt_doReaderMAC(ccnr, AA1[PICOPASS_KD_BLOCK_INDEX].data, mac);
err = rfalPicoPassPollerCheck(mac, &chkRes);
if(err != ERR_NONE) {
FURI_LOG_E(TAG, "rfalPicoPassPollerCheck error %d", err);
@ -489,7 +508,7 @@ ReturnCode picopass_write_block(PicopassPacs* pacs, uint8_t blockNo, uint8_t* ne
newBlock[5],
newBlock[6],
newBlock[7]};
loclass_doMAC_N(data, sizeof(data), div_key, mac);
loclass_doMAC_N(data, sizeof(data), AA1[PICOPASS_KD_BLOCK_INDEX].data, mac);
FURI_LOG_D(
TAG,
"loclass_doMAC_N %d %02x%02x%02x%02x%02x%02x%02x%02x %02x%02x%02x%02x",
@ -524,8 +543,8 @@ int32_t picopass_worker_task(void* context) {
picopass_worker_detect(picopass_worker);
} else if(picopass_worker->state == PicopassWorkerStateWrite) {
picopass_worker_write(picopass_worker);
} else if(picopass_worker->state == PicopassWorkerStateWriteStandardKey) {
picopass_worker_write_standard_key(picopass_worker);
} else if(picopass_worker->state == PicopassWorkerStateWriteKey) {
picopass_worker_write_key(picopass_worker);
}
picopass_worker_disable_field(ERR_NONE);
@ -633,7 +652,7 @@ void picopass_worker_write(PicopassWorker* picopass_worker) {
}
}
void picopass_worker_write_standard_key(PicopassWorker* picopass_worker) {
void picopass_worker_write_key(PicopassWorker* picopass_worker) {
PicopassDeviceData* dev_data = picopass_worker->dev_data;
PicopassBlock* AA1 = dev_data->AA1;
PicopassPacs* pacs = &dev_data->pacs;
@ -646,7 +665,7 @@ void picopass_worker_write_standard_key(PicopassWorker* picopass_worker) {
uint8_t* oldKey = AA1[PICOPASS_KD_BLOCK_INDEX].data;
uint8_t newKey[PICOPASS_BLOCK_LEN] = {0};
loclass_diversifyKey(csn, picopass_iclass_key, newKey);
loclass_iclass_calc_div_key(csn, pacs->key, newKey, false);
if((fuses & 0x80) == 0x80) {
FURI_LOG_D(TAG, "Plain write for personalized mode key change");
@ -658,9 +677,9 @@ void picopass_worker_write_standard_key(PicopassWorker* picopass_worker) {
}
}
while(picopass_worker->state == PicopassWorkerStateWriteStandardKey) {
while(picopass_worker->state == PicopassWorkerStateWriteKey) {
if(picopass_detect_card(1000) == ERR_NONE) {
err = picopass_write_block(pacs, PICOPASS_KD_BLOCK_INDEX, newKey);
err = picopass_write_block(AA1, PICOPASS_KD_BLOCK_INDEX, newKey);
if(err != ERR_NONE) {
FURI_LOG_E(TAG, "picopass_write_block error %d", err);
nextState = PicopassWorkerEventFail;

2
applications/plugins/picopass/picopass_worker.h
View file

@ -12,7 +12,7 @@ typedef enum {
// Main worker states
PicopassWorkerStateDetect,
PicopassWorkerStateWrite,
PicopassWorkerStateWriteStandardKey,
PicopassWorkerStateWriteKey,
// Transition
PicopassWorkerStateStop,
} PicopassWorkerState;

2
applications/plugins/picopass/picopass_worker_i.h
View file

@ -31,4 +31,4 @@ int32_t picopass_worker_task(void* context);
void picopass_worker_detect(PicopassWorker* picopass_worker);
void picopass_worker_write(PicopassWorker* picopass_worker);
void picopass_worker_write_standard_key(PicopassWorker* picopass_worker);
void picopass_worker_write_key(PicopassWorker* picopass_worker);

13
applications/plugins/picopass/scenes/picopass_scene_card_menu.c
View file

@ -3,6 +3,7 @@
enum SubmenuIndex {
SubmenuIndexSave,
SubmenuIndexSaveAsLF,
SubmenuIndexChangeKey,
};
void picopass_scene_card_menu_submenu_callback(void* context, uint32_t index) {
@ -25,6 +26,13 @@ void picopass_scene_card_menu_on_enter(void* context) {
picopass_scene_card_menu_submenu_callback,
picopass);
}
submenu_add_item(
submenu,
"Change Key",
SubmenuIndexChangeKey,
picopass_scene_card_menu_submenu_callback,
picopass);
submenu_set_selected_item(
picopass->submenu,
scene_manager_get_scene_state(picopass->scene_manager, PicopassSceneCardMenu));
@ -49,6 +57,11 @@ bool picopass_scene_card_menu_on_event(void* context, SceneManagerEvent event) {
picopass->dev->format = PicopassDeviceSaveFormatLF;
scene_manager_next_scene(picopass->scene_manager, PicopassSceneSaveName);
consumed = true;
} else if(event.event == SubmenuIndexChangeKey) {
scene_manager_set_scene_state(
picopass->scene_manager, PicopassSceneCardMenu, SubmenuIndexChangeKey);
scene_manager_next_scene(picopass->scene_manager, PicopassSceneKeyMenu);
consumed = true;
}
} else if(event.type == SceneManagerEventTypeBack) {
consumed = scene_manager_search_and_switch_to_previous_scene(

1
applications/plugins/picopass/scenes/picopass_scene_config.h
View file

@ -13,3 +13,4 @@ ADD_SCENE(picopass, write_card, WriteCard)
ADD_SCENE(picopass, write_card_success, WriteCardSuccess)
ADD_SCENE(picopass, read_factory_success, ReadFactorySuccess)
ADD_SCENE(picopass, write_key, WriteKey)
ADD_SCENE(picopass, key_menu, KeyMenu)

100
applications/plugins/picopass/scenes/picopass_scene_key_menu.c Normal file
View file

@ -0,0 +1,100 @@
#include "../picopass_i.h"
enum SubmenuIndex {
SubmenuIndexWriteStandard,
SubmenuIndexWriteiCE,
SubmenuIndexWriteiCL,
SubmenuIndexWriteiCS,
SubmenuIndexWriteCustom, //TODO: user input of key
};
extern const uint8_t picopass_xice_key[];
extern const uint8_t picopass_xicl_key[];
extern const uint8_t picopass_xics_key[];
extern const uint8_t picopass_iclass_key[];
void picopass_scene_key_menu_submenu_callback(void* context, uint32_t index) {
Picopass* picopass = context;
view_dispatcher_send_custom_event(picopass->view_dispatcher, index);
}
void picopass_scene_key_menu_on_enter(void* context) {
Picopass* picopass = context;
Submenu* submenu = picopass->submenu;
submenu_add_item(
submenu,
"Write Standard",
SubmenuIndexWriteStandard,
picopass_scene_key_menu_submenu_callback,
picopass);
submenu_add_item(
submenu,
"Write iCE",
SubmenuIndexWriteiCE,
picopass_scene_key_menu_submenu_callback,
picopass);
submenu_add_item(
submenu,
"Write iCL",
SubmenuIndexWriteiCL,
picopass_scene_key_menu_submenu_callback,
picopass);
submenu_add_item(
submenu,
"Write iCS",
SubmenuIndexWriteiCS,
picopass_scene_key_menu_submenu_callback,
picopass);
submenu_set_selected_item(
picopass->submenu,
scene_manager_get_scene_state(picopass->scene_manager, PicopassSceneKeyMenu));
view_dispatcher_switch_to_view(picopass->view_dispatcher, PicopassViewMenu);
}
bool picopass_scene_key_menu_on_event(void* context, SceneManagerEvent event) {
Picopass* picopass = context;
bool consumed = false;
if(event.type == SceneManagerEventTypeCustom) {
if(event.event == SubmenuIndexWriteStandard) {
scene_manager_set_scene_state(
picopass->scene_manager, PicopassSceneKeyMenu, SubmenuIndexWriteStandard);
memcpy(picopass->dev->dev_data.pacs.key, picopass_iclass_key, PICOPASS_BLOCK_LEN);
scene_manager_next_scene(picopass->scene_manager, PicopassSceneWriteKey);
consumed = true;
} else if(event.event == SubmenuIndexWriteiCE) {
scene_manager_set_scene_state(
picopass->scene_manager, PicopassSceneKeyMenu, SubmenuIndexWriteiCE);
memcpy(picopass->dev->dev_data.pacs.key, picopass_xice_key, PICOPASS_BLOCK_LEN);
scene_manager_next_scene(picopass->scene_manager, PicopassSceneWriteKey);
consumed = true;
} else if(event.event == SubmenuIndexWriteiCL) {
scene_manager_set_scene_state(
picopass->scene_manager, PicopassSceneKeyMenu, SubmenuIndexWriteiCE);
memcpy(picopass->dev->dev_data.pacs.key, picopass_xicl_key, PICOPASS_BLOCK_LEN);
scene_manager_next_scene(picopass->scene_manager, PicopassSceneWriteKey);
consumed = true;
} else if(event.event == SubmenuIndexWriteiCS) {
scene_manager_set_scene_state(
picopass->scene_manager, PicopassSceneKeyMenu, SubmenuIndexWriteiCE);
memcpy(picopass->dev->dev_data.pacs.key, picopass_xics_key, PICOPASS_BLOCK_LEN);
scene_manager_next_scene(picopass->scene_manager, PicopassSceneWriteKey);
consumed = true;
}
} else if(event.type == SceneManagerEventTypeBack) {
consumed = scene_manager_search_and_switch_to_previous_scene(
picopass->scene_manager, PicopassSceneStart);
}
return consumed;
}
void picopass_scene_key_menu_on_exit(void* context) {
Picopass* picopass = context;
submenu_reset(picopass->submenu);
}

4
applications/plugins/picopass/scenes/picopass_scene_read_card.c
View file

@ -1,7 +1,7 @@
#include "../picopass_i.h"
#include <dolphin/dolphin.h>
const uint8_t picopass_factory_key_check[] = {0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87};
extern const uint8_t picopass_factory_debit_key[];
void picopass_read_card_worker_callback(PicopassWorkerEvent event, void* context) {
UNUSED(event);
@ -38,7 +38,7 @@ bool picopass_scene_read_card_on_event(void* context, SceneManagerEvent event) {
if(event.event == PicopassCustomEventWorkerExit) {
if(memcmp(
picopass->dev->dev_data.pacs.key,
picopass_factory_key_check,
picopass_factory_debit_key,
PICOPASS_BLOCK_LEN) == 0) {
scene_manager_next_scene(picopass->scene_manager, PicopassSceneReadFactorySuccess);
} else {

3
applications/plugins/picopass/scenes/picopass_scene_read_factory_success.c
View file

@ -1,6 +1,8 @@
#include "../picopass_i.h"
#include <dolphin/dolphin.h>
extern const uint8_t picopass_iclass_key[];
void picopass_scene_read_factory_success_widget_callback(
GuiButtonType result,
InputType type,
@ -63,6 +65,7 @@ bool picopass_scene_read_factory_success_on_event(void* context, SceneManagerEve
if(event.event == GuiButtonTypeLeft) {
consumed = scene_manager_previous_scene(picopass->scene_manager);
} else if(event.event == GuiButtonTypeCenter) {
memcpy(picopass->dev->dev_data.pacs.key, picopass_iclass_key, PICOPASS_BLOCK_LEN);
scene_manager_next_scene(picopass->scene_manager, PicopassSceneWriteKey);
consumed = true;
}

2
applications/plugins/picopass/scenes/picopass_scene_write_key.c
View file

@ -20,7 +20,7 @@ void picopass_scene_write_key_on_enter(void* context) {
view_dispatcher_switch_to_view(picopass->view_dispatcher, PicopassViewPopup);
picopass_worker_start(
picopass->worker,
PicopassWorkerStateWriteStandardKey,
PicopassWorkerStateWriteKey,
&picopass->dev->dev_data,
picopass_write_key_worker_callback,
picopass);