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safari_browserstate.py
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safari_browserstate.py
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# Mobile Verification Toolkit (MVT)
# Copyright (c) 2021-2023 The MVT 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 io
import logging
import os
import plistlib
import sqlite3
from typing import Optional, Union
from mvt.common.utils import convert_mactime_to_iso, keys_bytes_to_string
from ..base import IOSExtraction
SAFARI_BROWSER_STATE_BACKUP_RELPATH = "Library/Safari/BrowserState.db"
SAFARI_BROWSER_STATE_ROOT_PATHS = [
"private/var/mobile/Library/Safari/BrowserState.db",
"private/var/mobile/Containers/Data/Application/*/Library/Safari/BrowserState.db",
]
class SafariBrowserState(IOSExtraction):
"""This module extracts all Safari browser state records."""
def __init__(
self,
file_path: Optional[str] = None,
target_path: Optional[str] = None,
results_path: Optional[str] = None,
module_options: Optional[dict] = None,
log: logging.Logger = logging.getLogger(__name__),
results: Optional[list] = None,
) -> None:
super().__init__(
file_path=file_path,
target_path=target_path,
results_path=results_path,
module_options=module_options,
log=log,
results=results,
)
self._session_history_count = 0
def serialize(self, record: dict) -> Union[dict, list]:
return {
"timestamp": record["last_viewed_timestamp"],
"module": self.__class__.__name__,
"event": "tab",
"data": f"{record['tab_title']} - {record['tab_url']}",
}
def check_indicators(self) -> None:
if not self.indicators:
return
for result in self.results:
if "tab_url" in result:
ioc = self.indicators.check_domain(result["tab_url"])
if ioc:
result["matched_indicator"] = ioc
self.detected.append(result)
continue
if "session_data" not in result:
continue
for session_entry in result["session_data"]:
if "entry_url" in session_entry:
ioc = self.indicators.check_domain(session_entry["entry_url"])
if ioc:
result["matched_indicator"] = ioc
self.detected.append(result)
def _process_browser_state_db(self, db_path):
self._recover_sqlite_db_if_needed(db_path)
conn = self._open_sqlite_db(db_path)
cur = conn.cursor()
try:
cur.execute(
"""
SELECT
tabs.title,
tabs.url,
tabs.user_visible_url,
tabs.last_viewed_time,
tab_sessions.session_data
FROM tabs
JOIN tab_sessions ON tabs.uuid = tab_sessions.tab_uuid
ORDER BY tabs.last_viewed_time;
"""
)
except sqlite3.OperationalError:
# Old version iOS <12 likely
cur.execute(
"""
SELECT
title, url, user_visible_url, last_viewed_time, session_data
FROM tabs
ORDER BY last_viewed_time;
"""
)
for row in cur:
session_entries = []
if row[4]:
# Skip a 4 byte header before the plist content.
session_plist = row[4][4:]
session_data = {}
try:
session_data = plistlib.load(io.BytesIO(session_plist))
session_data = keys_bytes_to_string(session_data)
except plistlib.InvalidFileException:
pass
if "SessionHistoryEntries" in session_data.get("SessionHistory", {}):
for session_entry in session_data["SessionHistory"].get(
"SessionHistoryEntries"
):
self._session_history_count += 1
data_length = 0
if "SessionHistoryEntryData" in session_entry:
data_length = len(
session_entry.get("SessionHistoryEntryData")
)
session_entries.append(
{
"entry_title": session_entry.get(
"SessionHistoryEntryOriginalURL"
),
"entry_url": session_entry.get(
"SessionHistoryEntryURL"
),
"data_length": data_length,
}
)
self.results.append(
{
"tab_title": row[0],
"tab_url": row[1],
"tab_visible_url": row[2],
"last_viewed_timestamp": convert_mactime_to_iso(row[3]),
"session_data": session_entries,
"safari_browser_state_db": os.path.relpath(
db_path, self.target_path
),
}
)
def run(self) -> None:
if self.is_backup:
for backup_file in self._get_backup_files_from_manifest(
relative_path=SAFARI_BROWSER_STATE_BACKUP_RELPATH
):
browserstate_path = self._get_backup_file_from_id(
backup_file["file_id"]
)
if not browserstate_path:
continue
self.log.info(
"Found Safari browser state database at path: %s", browserstate_path
)
self._process_browser_state_db(browserstate_path)
elif self.is_fs_dump:
for browserstate_path in self._get_fs_files_from_patterns(
SAFARI_BROWSER_STATE_ROOT_PATHS
):
self.log.info(
"Found Safari browser state database at path: %s", browserstate_path
)
self._process_browser_state_db(browserstate_path)
self.log.info(
"Extracted a total of %d tab records and %d session history entries",
len(self.results),
self._session_history_count,
)