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Update cachelocation.py

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Change GPS_TRACKPOINT to GPS_BOOKMARK.  Change how cache file is processed and read.
This commit is contained in:
Mark McKinnon 2020-03-17 09:44:15 -04:00
parent 940edf0c93
commit 3b9036622f
1 changed files with 18 additions and 55 deletions
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73
InternalPythonModules/android/cachelocation.py
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@ -41,6 +41,7 @@ from org.sleuthkit.datamodel import TskCoreException
import traceback
import general
import struct
"""
Parses cache files that Android maintains for Wifi and cell towers. Adds GPS points to blackboard.
@ -74,60 +75,24 @@ class CacheLocationAnalyzer(general.AndroidComponentAnalyzer):
def __findGeoLocationsInFile(self, file, abstractFile):
tempBytes = bytearray([0] * 2) # will temporarily hold bytes to be converted into the correct data types
try:
inputStream = FileInputStream(file)
inputStream.read(tempBytes) # version
tempBytes = bytearray([0] * 2)
inputStream.read(tempBytes) # number of location entries
iterations = BigInteger(tempBytes).intValue()
for i in range(iterations): # loop through every entry
tempBytes = bytearray([0] * 2)
inputStream.read(tempBytes)
tempBytes = bytearray([0])
inputStream.read(tempBytes)
while BigInteger(tempBytes).intValue() != 0: # pass through non important values until the start of accuracy(around 7-10 bytes)
if 0 > inputStream.read(tempBytes):
break # we've passed the end of the file, so stop
tempBytes = bytearray([0] * 3)
inputStream.read(tempBytes)
if BigInteger(tempBytes).intValue() <= 0: # This refers to a location that could not be calculated
tempBytes = bytearray([0] * 28) # read rest of the row's bytes
inputStream.read(tempBytes)
continue
accuracy = "" + BigInteger(tempBytes).intValue()
tempBytes = bytearray([0] * 4)
inputStream.read(tempBytes)
confidence = "" + BigInteger(tempBytes).intValue()
tempBytes = bytearray([0] * 8)
inputStream.read(tempBytes)
latitude = CacheLocationAnalyzer.toDouble(bytes)
tempBytes = bytearray([0] * 8)
inputStream.read(tempBytes)
longitude = CacheLocationAnalyzer.toDouble(bytes)
tempBytes = bytearray([0] * 8)
inputStream.read(tempBytes)
timestamp = BigInteger(tempBytes).longValue() / 1000
# code to parse the cache.wifi and cache.cell taken from https://forensics.spreitzenbarth.de/2011/10/28/decoding-cache-cell-and-cache-wifi-files/
cacheFile = open(str(file), 'rb')
(version, entries) = struct.unpack('>hh', cacheFile.read(4))
i = 0
while i < entries:
key = cacheFile.read(struct.unpack('>h', cacheFile.read(2))[0])
(accuracy, confidence, latitude, longitude, readtime) = struct.unpack('>iiddQ', cacheFile.read(32))
timestamp = readtime/1000
i = i + 1
attributes = ArrayList()
artifact = abstractFile.newArtifact(BlackboardArtifact.ARTIFACT_TYPE.TSK_GPS_TRACKPOINT)
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_GEO_LATITUDE, AndroidAnalyzer.MODULE_NAME, latitude))
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_GEO_LONGITUDE, AndroidAnalyzer.MODULE_NAME, longitude))
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_DATETIME, AndroidModuleFactorymodule.Name, timestamp))
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PROG_NAME, AndroidAnalyzer.MODULE_NAME,
file.getName() + "Location History"))
artifact = abstractFile.newArtifact(BlackboardArtifact.ARTIFACT_TYPE.TSK_GPS_BOOKMARK)
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_GEO_LATITUDE, general.MODULE_NAME, latitude))
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_GEO_LONGITUDE, general.MODULE_NAME, longitude))
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_DATETIME, general.MODULE_NAME, timestamp))
attributes.add(BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PROG_NAME, general.MODULE_NAME,
abstractFile.getName() + " Location History"))
artifact.addAttributes(attributes)
#Not storing these for now.
@ -136,15 +101,13 @@ class CacheLocationAnalyzer(general.AndroidComponentAnalyzer):
try:
# index the artifact for keyword search
blackboard = Case.getCurrentCase().getSleuthkitCase().getBlackboard()
blackboard.postArtifact(artifact, MODULE_NAME)
blackboard.postArtifact(artifact, general.MODULE_NAME)
except Blackboard.BlackboardException as ex:
self._logger.log(Level.SEVERE, "Unable to index blackboard artifact " + str(artifact.getArtifactID()), ex)
self._logger.log(Level.SEVERE, traceback.format_exc())
MessageNotifyUtil.Notify.error("Failed to index GPS trackpoint artifact for keyword search.", artifact.getDisplayName())
cacheFile.close()
except SQLException as ex:
# Unable to execute Cached GPS locations SQL query against database.
pass
except Exception as ex:
self._logger.log(Level.SEVERE, "Error parsing Cached GPS locations to blackboard", ex)
self._logger.log(Level.SEVERE, traceback.format_exc())