mirror of
https://github.com/overcuriousity/autopsy-flatpak.git
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311 lines
14 KiB
Python
311 lines
14 KiB
Python
"""
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Autopsy Forensic Browser
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Copyright 2019 Basis Technology Corp.
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Contact: carrier <at> sleuthkit <dot> org
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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from java.io import File
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from java.lang import Class
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from java.lang import ClassNotFoundException
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from java.lang import Long
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from java.lang import String
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from java.sql import ResultSet
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from java.sql import SQLException
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from java.sql import Statement
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from java.util.logging import Level
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from org.apache.commons.codec.binary import Base64
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from org.sleuthkit.autopsy.casemodule import Case
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from org.sleuthkit.autopsy.coreutils import Logger
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from org.sleuthkit.autopsy.coreutils import AppSQLiteDB
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from org.sleuthkit.autopsy.coreutils import AppDBParserHelper
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from org.sleuthkit.autopsy.ingest import IngestJobContext
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from org.sleuthkit.datamodel import AbstractFile
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from org.sleuthkit.datamodel import BlackboardArtifact
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from org.sleuthkit.datamodel import BlackboardAttribute
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from org.sleuthkit.datamodel import Content
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from org.sleuthkit.datamodel import TskCoreException
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from org.sleuthkit.datamodel import Account
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from TskMessagesParser import TskMessagesParser
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from TskContactsParser import TskContactsParser
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from TskCallLogsParser import TskCallLogsParser
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import traceback
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import general
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class ViberAnalyzer(general.AndroidComponentAnalyzer):
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"""
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Parses the Viber App databases for TSK contacts, message
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and calllog artifacts.
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"""
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def __init__(self):
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self._logger = Logger.getLogger(self.__class__.__name__)
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self._VIBER_PACKAGE_NAME = "com.viber.voip"
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self._PARSER_NAME = "Viber Parser"
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def analyze(self, dataSource, fileManager, context):
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"""
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Extract, Transform and Load all messages, contacts and
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calllogs from the Viber databases.
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"""
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try:
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contact_and_calllog_dbs = AppSQLiteDB.findAppDatabases(dataSource,
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"viber_data", True, self._VIBER_PACKAGE_NAME)
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message_dbs = AppSQLiteDB.findAppDatabases(dataSource,
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"viber_messages", True, self._VIBER_PACKAGE_NAME)
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#Extract TSK_CONTACT and TSK_CALLLOG information
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for contact_and_calllog_db in contact_and_calllog_dbs:
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helper = AppDBParserHelper(self._PARSER_NAME,
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contact_and_calllog_db.getDBFile(), Account.Type.VIBER)
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contacts_parser = ViberContactsParser(contact_and_calllog_db)
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while contacts_parser.next():
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helper.addContact(
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contacts_parser.get_account_name(),
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contacts_parser.get_contact_name(),
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contacts_parser.get_phone(),
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contacts_parser.get_home_phone(),
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contacts_parser.get_mobile_phone(),
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contacts_parser.get_email()
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)
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contacts_parser.close()
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calllog_parser = ViberCallLogsParser(contact_and_calllog_db)
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while calllog_parser.next():
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helper.addCalllog(
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calllog_parser.get_account_name(),
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calllog_parser.get_call_direction(),
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calllog_parser.get_phone_number_from(),
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calllog_parser.get_phone_number_to(),
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calllog_parser.get_call_start_date_time(),
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calllog_parser.get_call_end_date_time(),
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calllog_parser.get_contact_name()
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)
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calllog_parser.close()
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contact_and_calllog_db.close()
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#Extract TSK_MESSAGE information
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for message_db in message_dbs:
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helper = AppDBParserHelper(self._PARSER_NAME,
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message_db.getDBFile(), Account.Type.VIBER)
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messages_parser = ViberMessagesParser(message_db)
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while messages_parser.next():
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helper.addMessage(
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messages_parser.get_message_type(),
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messages_parser.get_message_direction(),
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messages_parser.get_phone_number_from(),
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messages_parser.get_phone_number_to(),
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messages_parser.get_message_date_time(),
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messages_parser.get_message_read_status(),
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messages_parser.get_message_subject(),
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messages_parser.get_message_text(),
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messages_parser.get_thread_id()
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)
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messages_parser.close()
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message_db.close()
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except (SQLException, TskCoreException) as ex:
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#Error parsing Viber db
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self._logger.log(Level.WARNING, "Error parsing Viber Databases", ex)
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self._logger.log(Level.WARNING, traceback.format_exec())
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class ViberCallLogsParser(TskCallLogsParser):
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"""
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Extracts TSK_CALLLOG information from the Viber database.
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TSK_CALLLOG fields that are not in the Viber database are given
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a default value inherited from the super class.
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"""
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def __init__(self, calllog_db):
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super(ViberCallLogsParser, self).__init__(calllog_db.runQuery(
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"""
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SELECT C.canonized_number AS number,
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C.type AS direction,
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C.duration AS seconds,
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C.date AS start_time
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FROM calls AS C
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"""
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)
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)
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self._OUTGOING_CALL_TYPE = 2
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self._INCOMING_CALL_TYPE = 1
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self._MISSED_CALL_TYPE = 3
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def get_account_name(self):
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return self.result_set.getString("number")
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def get_phone_number_from(self):
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if self.get_call_direction() == self.INCOMING_CALL:
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return self.result_set.getString("number")
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#Give default value if the call is outgoing,
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#the device's # is not stored in the database.
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return super(ViberCallLogsParser, self).get_phone_number_from()
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def get_phone_number_to(self):
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if self.get_call_direction() == self.OUTGOING_CALL:
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return self.result_set.getString("number")
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#Give default value if the call is incoming,
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#the device's # is not stored in the database.
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return super(ViberCallLogsParser, self).get_phone_number_to()
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def get_call_direction(self):
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direction = self.result_set.getInt("direction")
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if direction == self._INCOMING_CALL_TYPE or direction == self._MISSED_CALL_TYPE:
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return self.INCOMING_CALL
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return self.OUTGOING_CALL
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def get_call_start_date_time(self):
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return self.result_set.getLong("start_time") / 1000
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def get_call_end_date_time(self):
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start_time = self.get_call_start_date_time()
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duration = self.result_set.getLong("seconds")
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return start_time + duration
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class ViberContactsParser(TskContactsParser):
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"""
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Extracts TSK_CONTACT information from the Viber database.
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TSK_CONTACT fields that are not in the Viber database are given
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a default value inherited from the super class.
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"""
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def __init__(self, contact_db):
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super(ViberContactsParser, self).__init__(contact_db.runQuery(
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"""
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SELECT C.display_name AS name,
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D.data2 AS number
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FROM phonebookcontact AS C
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JOIN phonebookdata AS D
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ON C._id = D.contact_id
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"""
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)
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)
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def get_account_name(self):
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return self.result_set.getString("number")
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def get_contact_name(self):
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return self.result_set.getString("name")
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def get_phone(self):
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return self.result_set.getString("number")
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class ViberMessagesParser(TskMessagesParser):
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"""
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Extract TSK_MESSAGE information from the Viber database.
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TSK_CONTACT fields that are not in the Viber database are given
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a default value inherited from the super class.
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"""
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def __init__(self, message_db):
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"""
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For our purposes, the Viber datamodel is as follows:
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- People can take part in N conversation(s). A conversation can have M
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members and messages are exchanged in a conversation.
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- Viber has a conversation table, a participant table (the people/members in the above
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analogy) and a messages table.
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- Each row of the participants table maps a person to a conversation_id
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- Each row in the messages table has a from participant id and a conversation id.
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The query below does the following:
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- The first two inner joins on participants and participants_info build
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the 1 to many (M) mappings between the sender and the recipients for each
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conversation_id. If a and b do private messaging, then 2 rows in the result
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will be a -> b and b -> a.
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If a, b, c, d are in a group, then 4 rows containing a -> b,c,d. b -> a,c,d. etc.
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Participants_info is needed to get phone numbers.
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- The result of the above step is a look up table for each message. Joining this result
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onto the messages table lets us know which participant a message originated from and
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everyone else that received it.
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"""
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super(ViberMessagesParser, self).__init__(message_db.runQuery(
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"""
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SELECT convo_participants.from_number AS from_number,
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convo_participants.recipients AS recipients,
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M.conversation_id AS thread_id,
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M.body AS msg_content,
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M.send_type AS direction,
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M.msg_date AS msg_date,
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M.unread AS read_status
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FROM (SELECT *,
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group_concat(TO_RESULT.number) AS recipients
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FROM (SELECT P._id AS FROM_ID,
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P.conversation_id,
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PI.number AS FROM_NUMBER
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FROM participants AS P
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JOIN participants_info AS PI
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ON P.participant_info_id = PI._id) AS FROM_RESULT
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JOIN (SELECT P._id AS TO_ID,
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P.conversation_id,
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PI.number
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FROM participants AS P
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JOIN participants_info AS PI
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ON P.participant_info_id = PI._id) AS TO_RESULT
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ON FROM_RESULT.from_id != TO_RESULT.to_id
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AND FROM_RESULT.conversation_id = TO_RESULT.conversation_id
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GROUP BY FROM_RESULT.from_id) AS convo_participants
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JOIN messages AS M
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ON M.participant_id = convo_participants.from_id
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AND M.conversation_id = convo_participants.conversation_id
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"""
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)
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)
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self._VIBER_MESSAGE_TYPE = "Viber Message"
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self._INCOMING_MESSAGE_TYPE = 0
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self._OUTGOING_MESSAGE_TYPE = 1
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def get_message_type(self):
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return self._VIBER_MESSAGE_TYPE
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def get_phone_number_from(self):
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return Account.Address(self.result_set.getString("from_number"),
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self.result_set.getString("from_number"))
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def get_message_direction(self):
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direction = self.result_set.getInt("direction")
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if direction == self._INCOMING_MESSAGE_TYPE:
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return self.INCOMING_MSG
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return self.OUTGOING_MSG
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def get_phone_number_to(self):
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recipients = []
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for token in self.result_set.getString("recipients").split(","):
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recipients.append(Account.Address(token, token))
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return recipients
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def get_message_date_time(self):
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#transform from ms to seconds
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return self.result_set.getLong("msg_date") / 1000
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def get_message_read_status(self):
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if self.get_message_direction() == self.INCOMING_MSG:
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if self.result_set.getInt("read_status") == 0:
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return AppDBParserHelper.MessageReadStatusEnum.READ
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else:
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return AppDBParserHelper.MessageReadStatusEnum.UNREAD
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return super(ViberMessagesParser, self).get_message_read_status()
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def get_message_text(self):
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return self.result_set.getString("msg_content")
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def get_thread_id(self):
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return str(self.result_set.getInt("thread_id"))
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