Added new TCC module

This commit is contained in:
Nex 2021-09-09 12:00:48 +02:00
parent 80a670273d
commit 3236c1b390
3 changed files with 102 additions and 1 deletions

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@ -252,6 +252,16 @@ This JSON file is created by mvt-ios' `SMSAttachments` module. The module extrac
---
### `tcc.json`
!!! info "Availability"
Backup: :material-check:
Full filesystem dump: :material-check:
This JSON file is created by mvt-ios' `TCC` module. The module extracts records from a SQLite database located at */private/var/mobile/Library/TCC/TCC.db*, which contains a list of which services such as microphone, camera, or location, apps have been granted or denied access to.
---
### `version_history.json`
!!! info "Availability"

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@ -18,6 +18,7 @@ from .safari_browserstate import SafariBrowserState
from .safari_history import SafariHistory
from .sms import SMS
from .sms_attachments import SMSAttachments
from .tcc import TCC
from .webkit_resource_load_statistics import WebkitResourceLoadStatistics
from .webkit_session_resource_log import WebkitSessionResourceLog
from .whatsapp import Whatsapp
@ -25,5 +26,5 @@ from .whatsapp import Whatsapp
MIXED_MODULES = [Calls, ChromeFavicon, ChromeHistory, Contacts, FirefoxFavicon,
FirefoxHistory, IDStatusCache, InteractionC, LocationdClients,
OSAnalyticsADDaily, Datausage, SafariBrowserState, SafariHistory,
SMS, SMSAttachments, WebkitResourceLoadStatistics,
TCC, SMS, SMSAttachments, WebkitResourceLoadStatistics,
WebkitSessionResourceLog, Whatsapp,]

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@ -0,0 +1,90 @@
# Mobile Verification Toolkit (MVT)
# Copyright (c) 2021 The MVT Project Authors.
# Use of this software is governed by the MVT License 1.1 that can be found at
# https://license.mvt.re/1.1/
import sqlite3
from datetime import datetime
from mvt.common.utils import convert_timestamp_to_iso
from ..base import IOSExtraction
TCC_BACKUP_IDS = [
"64d0019cb3d46bfc8cce545a8ba54b93e7ea9347",
]
TCC_ROOT_PATHS = [
"private/var/mobile/Library/TCC/TCC.db",
]
AUTH_VALUES = {
0: "denied",
1: "unknown",
2: "allowed",
3: "limited",
}
AUTH_REASONS = {
1: "error",
2: "user_consent",
3: "user_set",
4: "system_set",
5: "service_policy",
6: "mdm_policy",
7: "override_policy",
8: "missing_usage_string",
9: "prompt_timeout",
10: "preflight_unknown",
11: "entitled",
12: "app_type_policy",
}
class TCC(IOSExtraction):
"""This module extracts records from the TCC.db SQLite database."""
def __init__(self, file_path=None, base_folder=None, output_folder=None,
fast_mode=False, log=None, results=[]):
super().__init__(file_path=file_path, base_folder=base_folder,
output_folder=output_folder, fast_mode=fast_mode,
log=log, results=results)
def process_db(self, file_path):
conn = sqlite3.connect(file_path)
cur = conn.cursor()
cur.execute("""SELECT
service, client, client_type, auth_value, auth_reason, last_modified
FROM access;""")
for row in cur:
service = row[0]
client = row[1]
client_type = row[2]
client_type_desc = "bundle_id" if client_type == 0 else "absolute_path"
auth_value = row[3]
auth_value_desc = AUTH_VALUES.get(auth_value, "")
auth_reason = row[4]
auth_reason_desc = AUTH_REASONS.get(auth_reason, "unknown")
last_modified = convert_timestamp_to_iso(datetime.utcfromtimestamp((row[5])))
if service in ["kTCCServiceMicrophone", "kTCCServiceCamera"]:
device = "microphone" if service == "kTCCServiceMicrophone" else "camera"
self.log.info("Found client \"%s\" with access %s to %s on %s by %s",
client, auth_value_desc, device, last_modified, auth_reason_desc)
self.results.append({
"service": service,
"client": client,
"client_type": client_type_desc,
"auth_value": auth_value_desc,
"auth_reason_desc": auth_reason_desc,
"last_modified": last_modified,
})
cur.close()
conn.close()
def run(self):
self._find_ios_database(backup_ids=TCC_BACKUP_IDS, root_paths=TCC_ROOT_PATHS)
self.log.info("Found TCC database at path: %s", self.file_path)
self.process_db(self.file_path)
self.log.info("Extracted a total of %d TCC items", len(self.results))