Add a command to reset MF0 / NTAG unsuccessful auth counter.

software/script/chameleon_cli_unit.py

@@ -2216,12 +2216,15 @@ class HFMFUEConfig(SlotIndexArgsAndGoUnit, HF14AAntiCollArgsUnit, DeviceRequired
         uid_magic_group.add_argument('--disable-uid-magic', action='store_true', help="Disable UID magic mode")
         parser.add_argument('--set-version', type=bytes.fromhex, help="Set data to be returned by the GET_VERSION command.")
         parser.add_argument('--set-signature', type=bytes.fromhex, help="Set data to be returned by the READ_SIG command.")
+        parser.add_argument('--reset-auth-cnt', action='store_true', help="Resets the counter of unsuccessful authentication attempts.")
         return parser
 
     def on_exec(self, args: argparse.Namespace):
         aux_data_changed = False
+        aux_data_change_requested = False
         
         if args.set_version is not None:
+            aux_data_change_requested = True
             aux_data_changed = True
 
             if len(args.set_version) != 8:
@@ -2235,6 +2238,7 @@ class HFMFUEConfig(SlotIndexArgsAndGoUnit, HF14AAntiCollArgsUnit, DeviceRequired
                 return
 
         if args.set_signature is not None:
+            aux_data_change_requested = True
             aux_data_changed = True
 
             if len(args.set_signature) != 32:
@@ -2246,6 +2250,13 @@ class HFMFUEConfig(SlotIndexArgsAndGoUnit, HF14AAntiCollArgsUnit, DeviceRequired
             except:
                 print(f"{CR}Tag type does not support READ_SIG command.{C0}")
                 return
+        
+        if args.reset_auth_cnt:
+            aux_data_change_requested = True
+            old_value = self.cmd.mfu_reset_auth_cnt()
+            if old_value != 0:
+                aux_data_changed = True
+                print(f"- Unsuccessful auth counter has been reset from {old_value} to 0.")
 
         # collect current settings
         anti_coll_data = self.cmd.hf14a_get_anti_coll_data()
@@ -2285,7 +2296,7 @@ class HFMFUEConfig(SlotIndexArgsAndGoUnit, HF14AAntiCollArgsUnit, DeviceRequired
 
         if change_done or aux_data_changed:
             print(' - MFU/NTAG Emulator settings updated')
-        if not (change_requested or aux_data_changed):
+        if not (change_requested or aux_data_change_requested):
             print(f'- {"Type:":40}{CY}{hf_tag_type}{C0}')
             print(f'- {"UID:":40}{CY}{uid.hex().upper()}{C0}')
             print(f'- {"ATQA:":40}{CY}{atqa.hex().upper()} '

software/script/chameleon_cmd.py

@@ -628,6 +628,16 @@ class ChameleonCMD:
         resp = self.device.send_cmd_sync(Command.MF0_NTAG_SET_COUNTER_DATA, data)
         return resp
 
+    @expect_response(Status.SUCCESS)
+    def mfu_reset_auth_cnt(self):
+        """
+            Resets authentication counter
+        """
+        resp = self.device.send_cmd_sync(Command.MF0_NTAG_RESET_AUTH_CNT, bytes())
+        if resp.status == Status.SUCCESS:
+            resp.parsed = resp.data[0]
+        return resp
+
     @expect_response(Status.SUCCESS)
     def hf14a_set_anti_coll_data(self, uid: bytes, atqa: bytes, sak: bytes, ats: bytes = b''):
         """

software/script/chameleon_enum.py

@@ -105,6 +105,7 @@ class Command(enum.IntEnum):
     MF0_NTAG_SET_SIGNATURE_DATA = 4026
     MF0_NTAG_GET_COUNTER_DATA = 4027
     MF0_NTAG_SET_COUNTER_DATA = 4028
+    MF0_NTAG_RESET_AUTH_CNT = 4029
 
     EM410X_SET_EMU_ID = 5000
     EM410X_GET_EMU_ID = 5001