mvt/mvt/ios/modules/fs/chrome_favicon.py

79 lines
2.8 KiB
Python

# Mobile Verification Toolkit (MVT)
# Copyright (c) 2021 MVT Project Developers.
# See the file 'LICENSE' for usage and copying permissions, or find a copy at
# https://github.com/mvt-project/mvt/blob/main/LICENSE
import sqlite3
from mvt.common.utils import convert_chrometime_to_unix, convert_timestamp_to_iso
from .base import IOSExtraction
CHROME_FAVICON_BACKUP_IDS = [
"55680ab883d0fdcffd94f959b1632e5fbbb18c5b"
]
# TODO: Confirm Chrome database path.
CHROME_FAVICON_ROOT_PATHS = [
"private/var/mobile/Containers/Data/Application/*/Library/Application Support/Google/Chrome/Default/Favicons",
]
class ChromeFavicon(IOSExtraction):
"""This module extracts all Chrome favicon records."""
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 serialize(self, record):
return {
"timestamp": record["isodate"],
"module": self.__class__.__name__,
"event": "new_favicon",
"data": f"{record['icon_url']} from {record['url']}"
}
def check_indicators(self):
if not self.indicators:
return
for result in self.results:
if self.indicators.check_domain(result["url"]) or self.indicators.check_domain(result["icon_url"]):
self.detected.append(result)
def run(self):
self._find_ios_database(backup_ids=CHROME_FAVICON_BACKUP_IDS, root_paths=CHROME_FAVICON_ROOT_PATHS)
self.log.info("Found Chrome favicon cache database at path: %s", self.file_path)
conn = sqlite3.connect(self.file_path)
# Fetch icon cache
cur = conn.cursor()
cur.execute("""SELECT
icon_mapping.page_url,
favicons.url,
favicon_bitmaps.last_updated,
favicon_bitmaps.last_requested
FROM icon_mapping
JOIN favicon_bitmaps ON icon_mapping.icon_id = favicon_bitmaps.icon_id
JOIN favicons ON icon_mapping.icon_id = favicons.id
ORDER BY icon_mapping.id;""")
items = []
for item in cur:
last_timestamp = int(item[2]) or int(item[3])
items.append(dict(
url=item[0],
icon_url=item[1],
timestamp=last_timestamp,
isodate=convert_timestamp_to_iso(convert_chrometime_to_unix(last_timestamp)),
))
cur.close()
conn.close()
self.log.info("Extracted a total of %d favicon records", len(items))
self.results = sorted(items, key=lambda item: item["isodate"])