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124 lines
5.0 KiB
Python
124 lines
5.0 KiB
Python
# Mobile Verification Toolkit (MVT)
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# Copyright (c) 2021 The MVT Project Authors.
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# Use of this software is governed by the MVT License 1.1 that can be found at
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# https://license.mvt.re/1.1/
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import glob
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import os
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import plistlib
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from mvt.common.utils import convert_timestamp_to_iso
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from ..base import IOSExtraction
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WEBKIT_SESSION_RESOURCE_LOG_BACKUP_IDS = [
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"a500ee38053454a02e990957be8a251935e28d3f",
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]
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WEBKIT_SESSION_RESOURCE_LOG_ROOT_PATHS = [
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"private/var/mobile/Containers/Data/Application/*/SystemData/com.apple.SafariViewService/Library/WebKit/WebsiteData/full_browsing_session_resourceLog.plist",
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"private/var/mobile/Containers/Data/Application/*/Library/WebKit/WebsiteData/ResourceLoadStatistics/full_browsing_session_resourceLog.plist",
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"private/var/mobile/Library/WebClips/*/Storage/full_browsing_session_resourceLog.plist",
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]
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class WebkitSessionResourceLog(IOSExtraction):
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"""This module extracts records from WebKit browsing session
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resource logs, and checks them against any provided list of
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suspicious domains."""
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def __init__(self, file_path=None, base_folder=None, output_folder=None,
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fast_mode=False, log=None, results=[]):
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super().__init__(file_path=file_path, base_folder=base_folder,
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output_folder=output_folder, fast_mode=fast_mode,
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log=log, results=results)
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self.results = {}
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def _extract_browsing_stats(self, file_path):
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items = []
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with open(file_path, "rb") as handle:
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file_plist = plistlib.read(handle)
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if "browsingStatistics" not in file_plist:
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return items
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browsing_stats = file_plist["browsingStatistics"]
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for item in browsing_stats:
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items.append({
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"origin": item.get("PrevalentResourceOrigin", ""),
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"redirect_source": item.get("topFrameUniqueRedirectsFrom", ""),
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"redirect_destination": item.get("topFrameUniqueRedirectsTo", ""),
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"subframe_under_origin": item.get("subframeUnderTopFrameOrigins", ""),
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"subresource_under_origin": item.get("subresourceUnderTopFrameOrigins", ""),
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"user_interaction": item.get("hadUserInteraction"),
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"most_recent_interaction": convert_timestamp_to_iso(item["mostRecentUserInteraction"]),
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"last_seen": convert_timestamp_to_iso(item["lastSeen"]),
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})
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return items
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@staticmethod
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def _extract_domains(entries):
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if not entries:
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return []
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domains = []
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for entry in entries:
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if "origin" in entry:
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domains.append(entry["origin"])
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if "domain" in entry:
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domains.append(entry["domain"])
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return domains
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def check_indicators(self):
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if not self.indicators:
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return
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for key, entries in self.results.items():
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for entry in entries:
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source_domains = self._extract_domains(entry["redirect_source"])
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destination_domains = self._extract_domains(entry["redirect_destination"])
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# TODO: Currently not used.
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# subframe_origins = self._extract_domains(entry["subframe_under_origin"])
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# subresource_domains = self._extract_domains(entry["subresource_under_origin"])
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all_origins = set([entry["origin"]] + source_domains + destination_domains)
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if self.indicators.check_domains(all_origins):
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self.detected.append(entry)
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redirect_path = ""
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if len(source_domains) > 0:
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redirect_path += "SOURCE: "
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for idx, item in enumerate(source_domains):
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source_domains[idx] = f"\"{item}\""
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redirect_path += ", ".join(source_domains)
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redirect_path += " -> "
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redirect_path += f"ORIGIN: \"{entry['origin']}\""
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if len(destination_domains) > 0:
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redirect_path += " -> "
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redirect_path += "DESTINATION: "
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for idx, item in enumerate(destination_domains):
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destination_domains[idx] = f"\"{item}\""
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redirect_path += ", ".join(destination_domains)
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self.log.warning("Found HTTP redirect between suspicious domains: %s", redirect_path)
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def run(self):
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if self.is_backup:
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self._find_ios_database(backup_ids=WEBKIT_SESSION_RESOURCE_LOG_BACKUP_IDS)
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self.results[self.file_path] = self._extract_browsing_stats(self.file_path)
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return
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for log_file in self._get_fs_files_from_pattern(WEBKIT_RESOURCELOADSTATICS_ROOT_PATHS):
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self.log.info("Found Safari browsing session resource log at path: %s", log_file)
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key = os.path.relpath(log_file, self.base_folder)
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self.results[key] = self._extract_browsing_stats(log_file)
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