def consume(self, doc, payload):
"""
Open file pointer as using libewf and pass to strings. See
``gransk.plugins.extractors.strings``.
:param doc: Document object.
:param payload: File pointer beloning to document.
:type doc: ``gransk.core.document.Document``
:type payload: ``file``
"""
payload.seek(0)
ewf_handle = pyewf.handle()
ewf_handle.open_file_objects([payload], "rb")
for key, value in ewf_handle.get_header_values().items():
doc.meta[key] = value
self.buffer_size = ewf_handle.chunk_size
try:
super(Subscriber, self).consume(doc, ewf_handle)
except Exception as err:
doc.meta['ewf_strings_err'] = six.text_type(err)
print (err)
ewf_handle.close()
payload.seek(0)
def image_read(image, img_type, part_type):
print("[+] Opening {}".format(image))
if img_type == "ewf":
try:
filenames = pyewf.glob(image)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Invalid EWF format:\n {}".format(e))
sys.exit(2)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
e01_metadata(ewf_handle)
# Open PYTSK3 handle on EWF Image
img_info = EWFImgInfo(ewf_handle)
else:
img_info = pytsk3.Img_Info(image)
try:
if part_type is not None:
attr_id = getattr(pytsk3, "TSK_VS_TYPE_" + part_type)
volume = pytsk3.Volume_Info(img_info, attr_id)
else:
volume = pytsk3.Volume_Info(img_info)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Unable to read partition table:\n {}".format(e))
sys.exit(3)
part_metadata(volume)
def test___init__discover_parameter_true(self):
"""
Should initialize member _fs_discoverd with True and call _initialize_partitions.
:return:
"""
import pyewf
from source.ewfimage import EWFImage, EWFImageInfo
expected_fs_discovered: bool = True
expected_image_info: EWFImageInfo = EWFImageInfo(
ewf_handle=pyewf.handle())
init_mock = MagicMock(return_value=None)
with patch('source.ewfimage.EWFImage._get_image_information',
MagicMock(return_value=expected_image_info)):
with patch('source.ewfimage.EWFImage._initialize_partitions',
init_mock):
actual_ewf_image = EWFImage(parent=None,
parameters={
'filepath': 'test.e01',
'discover': False
})
self.assertEqual(expected_fs_discovered,
actual_ewf_image._fs_discoverd)
init_mock.assert_called_once()
def offset_recog():
partition_offset_list = []
ewf_handle = pyewf.handle()
filenames = pyewf.glob("image_sd_pi.E01")
ewf_handle.open(filenames)
imagehandle = ewf_Img_Info(ewf_handle)
partitionTable = pytsk3.Volume_Info(imagehandle)
for partition in partitionTable:
print(partition.addr, partition.desc, "%ss(%s)" % (partition.start, partition.start * 512), partition.len)
partition_offset_list.append(partition.start * 512)
for x in partition_offset_list:
print(x)
filesystemObject = pytsk3.FS_Info(imagehandle, offset=4194304)
fileobject = filesystemObject.open("/$FAT1")
print("File Inode:",fileobject.info.meta.addr)
print("File Name:",fileobject.info.name.name)
print("File Creation Time:",datetime.datetime.fromtimestamp(fileobject.info.meta.crtime).strftime('%Y-%m-%d %H:%M:%S'))
#outfile = open('DFIRWizard-output', 'w')
#filedata = fileobject.read_random(0,fileobject.info.meta.size)
return partition_offset_list
def main(image, img_type, offset):
print("[+] Opening {}".format(image))
if img_type == "ewf":
try:
filenames = pyewf.glob(image)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Invalid EWF format:\n {}".format(e))
sys.exit(2)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
# Open PYTSK3 handle on EWF Image
img_info = EWFImgInfo(ewf_handle)
else:
img_info = pytsk3.Img_Info(image)
# Get Filesystem Handle
try:
fs = pytsk3.FS_Info(img_info, offset)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Unable to open FS:\n {}".format(e))
exit()
root_dir = fs.open_dir(path="/")
table = [["Name", "Type", "Size", "Create Date", "Modify Date"]]
for f in root_dir:
name = f.info.name.name
if f.info.meta.type == pytsk3.TSK_FS_META_TYPE_DIR:
f_type = "DIR"
else:
f_type = "FILE"
size = f.info.meta.size
create = f.info.meta.crtime
modify = f.info.meta.mtime
table.append([name, f_type, size, create, modify])
print(tabulate(table, headers="firstrow"))
def mount(iFile):
class ewf_Img_Info(pytsk3.Img_Info):
def __init__(self, ewf_handle):
self._ewf_handle = ewf_handle
super(ewf_Img_Info, self).__init__(
url="", type=pytsk3.TSK_IMG_TYPE_EXTERNAL)
def close(self):
self._ewf_handle.close()
def read(self, offset, size):
self._ewf_handle.seek(offset)
return self._ewf_handle.read(size)
def get_size(self):
return self._ewf_handle.get_media_size()
if iFile.lower().endswith(".e01"):
filenames = pyewf.glob(iFile)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
imagehandle = ewf_Img_Info(ewf_handle)
partitionTable = pytsk3.Volume_Info(imagehandle)
else:
imagehandle = pytsk3.Img_Info(iFile)
partitionTable = pytsk3.Volume_Info(imagehandle)
return partitionTable, imagehandle
def open_vol(self):
sys.stderr.write("[+] Opening {}\n".format(self.evidence))
# Handle EWF/Raw Images
if self.image_type == "ewf":
try:
filenames = pyewf.glob(self.evidence)
except IOError:
_, e, _ = sys.exc_info()
sys.stderr.write("[-] Invalid EWF format:\n {}\n".format(e))
raise IOError
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
# Open PYTSK3 handle on EWF Image
self.image_handle = EWFImgInfo(ewf_handle)
else:
self.image_handle = pytsk3.Img_Info(self.evidence)
# Open volume from image
try:
self.vol = pytsk3.Volume_Info(self.image_handle)
except IOError:
_, e, _ = sys.exc_info()
sys.stderr.write("[-] Unable to read partition table. Possible logical image:\n {}\n".format(e))
def test_read_buffer_at_offset(self):
"""Tests the read_buffer_at_offset function."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
ewf_handle.open(unittest.source)
file_size = ewf_handle.get_size()
# Test normal read.
data = ewf_handle.read_buffer_at_offset(4096, 0)
self.assertIsNotNone(data)
self.assertEqual(len(data), min(file_size, 4096))
# Test read beyond file size.
if file_size > 16:
data = ewf_handle.read_buffer_at_offset(4096, file_size - 16)
self.assertIsNotNone(data)
self.assertEqual(len(data), 16)
with self.assertRaises(ValueError):
ewf_handle.read_buffer_at_offset(-1, 0)
with self.assertRaises(ValueError):
ewf_handle.read_buffer_at_offset(4096, -1)
ewf_handle.close()
# Test the read without open.
with self.assertRaises(IOError):
ewf_handle.read_buffer_at_offset(4096, 0)
def parseImage(diskPath):
filenames = pyewf.glob(diskPath)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
#call class to parse .EO1 image with pytsk3
img_Info = ewf_Img_Info(ewf_handle)
try:
partitionTable = pytsk3.Volume_Info(img_Info)
except IOError:
print "Error!Could not determine partition type ", filenames
sys.exit(0)
#find partitions
for partition in partitionTable:
print partition.addr, partition.desc, "%s %s (%s)" % (partition.start, partition.start * 512, partition.len)
if 'NTFS' in partition.desc:
fileSystemObject = pytsk3.FS_Info(img_Info, offset = (partition.start * 512))
#Extract all files
directory = fileSystemObject.open_dir(path = '/')
#find all the files of the system
extraction(directory, [], [])
ewf_handle.close()
def iterate_image(self, image, img_type, output, part_type):
volume = None
print("[+] Opening {}".format(image))
if img_type == "ewf":
try:
#image = image.split('/')
#image = image[len(image) - 1]
image = image.replace('/', '\\')
print(image)
filenames = pyewf.glob(image)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Invalid EWF format:\n {}".format(e))
sys.exit(2)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
print(filenames)
# Open PYTSK3 handle on EWF Image
img_info = EWFImgInfo(ewf_handle)
else:
img_info = pytsk3.Img_Info(image)
print(img_info)
try:
if part_type is not None:
attr_id = getattr(pytsk3, "TSK_VS_TYPE_" + part_type)
volume = pytsk3.Volume_Info(img_info, attr_id)
print(volume)
else:
volume = pytsk3.Volume_Info(img_info)
print(volume)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Unable to read partition table:\n {}".format(e))
image_stored_list.open_fs(self, volume, img_info, output)
def test_open_close(self):
"""Tests the open and close functions."""
if not unittest.source:
return
filenames = pyewf.glob(unittest.source)
ewf_handle = pyewf.handle()
# Test open and close.
ewf_handle.open(filenames)
ewf_handle.close()
# Test open and close a second time to validate clean up on close.
ewf_handle.open(filenames)
ewf_handle.close()
if os.path.isfile(unittest.source):
with open(unittest.source, "rb") as file_object:
# Test open_file_objects and close.
ewf_handle.open_file_objects([file_object])
ewf_handle.close()
# Test open_file_objects and close a second time to validate clean up on close.
ewf_handle.open_file_objects([file_object])
ewf_handle.close()
# Test open_file_objects and close and dereferencing file_object.
ewf_handle.open_file_objects([file_object])
del file_object
ewf_handle.close()
def test_open_file_objects(self):
"""Tests the open_file_objects function."""
if not unittest.source:
raise unittest.SkipTest("missing source")
if not os.path.isfile(unittest.source):
raise unittest.SkipTest("source not a regular file")
filenames = pyewf.glob(unittest.source)
file_objects = [open(filename, "rb") for filename in filenames]
ewf_handle = pyewf.handle()
ewf_handle.open_file_objects(file_objects)
# TODO: change IOError into IOError
with self.assertRaises(MemoryError):
ewf_handle.open_file_objects(file_objects)
ewf_handle.close()
with self.assertRaises(TypeError):
ewf_handle.open_file_objects(None)
for file_object in file_objects:
file_object.close()
def test_open_close(self):
"""Tests the open and close functions."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
# Test open and close.
ewf_handle.open(unittest.source)
ewf_handle.close()
# Test open and close a second time to validate clean up on close.
ewf_handle.open(unittest.source)
ewf_handle.close()
file_object = open(unittest.source, "rb")
# Test open_file_object and close.
ewf_handle.open_file_object(file_object)
ewf_handle.close()
# Test open_file_object and close a second time to validate clean up on close.
ewf_handle.open_file_object(file_object)
ewf_handle.close()
# Test open_file_object and close and dereferencing file_object.
ewf_handle.open_file_object(file_object)
del file_object
ewf_handle.close()
def test_close(self):
"""Tests the close function."""
test_source = unittest.source
if not test_source:
raise unittest.SkipTest("missing source")
ewf_handle = pyewf.handle()
def main(image, img_type, hashes, part_type=None, pbar_total=0):
hash_list, hash_type = read_hashes(hashes)
volume = None
print("[+] Opening {}".format(image))
if img_type == "ewf":
try:
filenames = pyewf.glob(image)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Invalid EWF format:\n {}".format(e))
sys.exit(2)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
# Open PYTSK3 handle on EWF Image
img_info = EWFImgInfo(ewf_handle)
else:
img_info = pytsk3.Img_Info(image)
try:
if part_type is not None:
attr_id = getattr(pytsk3, "TSK_VS_TYPE_" + part_type)
volume = pytsk3.Volume_Info(img_info, attr_id)
else:
volume = pytsk3.Volume_Info(img_info)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Unable to read partition table:\n {}".format(e))
open_fs(volume, img_info, hash_list, hash_type, pbar_total)
def test_seek_offset(self):
"""Tests the seek_offset function."""
if not unittest.source:
raise unittest.SkipTest("missing source")
filenames = pyewf.glob(unittest.source)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
media_size = ewf_handle.get_media_size()
ewf_handle.seek_offset(16, os.SEEK_SET)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 16)
ewf_handle.seek_offset(16, os.SEEK_CUR)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 32)
ewf_handle.seek_offset(-16, os.SEEK_CUR)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 16)
if media_size > 16:
ewf_handle.seek_offset(-16, os.SEEK_END)
offset = ewf_handle.get_offset()
self.assertEqual(offset, media_size - 16)
ewf_handle.seek_offset(16, os.SEEK_END)
offset = ewf_handle.get_offset()
self.assertEqual(offset, media_size + 16)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-1, os.SEEK_SET)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-32 - media_size, os.SEEK_CUR)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-32 - media_size, os.SEEK_END)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(0, -1)
ewf_handle.close()
# Test the seek without open.
with self.assertRaises(IOError):
ewf_handle.seek_offset(16, os.SEEK_SET)
def main():
args = parser.parse_args()
image = args.image
partition_starts = []
# Check if the user provided image format is ewf. If so, use the libewf developer's provided class to extend
# the capabilities of pytsk3 to include the ewf format. If the image format is not ewf then pytsk3 can handle the image natively.
try:
if args.format == "ewf":
files = pyewf.glob(args.image)
ewf_handle = pyewf.handle()
ewf_handle.open(files)
image_handle = ewf_Img_Info(ewf_handle)
else:
image_handle = pytsk3.Img_Info(url=image)
# Once a handle to the image has been established print all of the detected partitions to the user and allow them to pick the partition of
# interest to be scanned.
print "Which partition should be scanned?"
volume = pytsk3.Volume_Info(image_handle)
for partition in volume:
print partition.addr, partition.desc, "%s(%s)" % (
partition.start, partition.start * 512), partition.len
partition_starts.append(int(partition.start))
except IOError, error:
print error
def parseImage(diskPath):
filenames = pyewf.glob(diskPath)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
#call class to parse .EO1 image with pytsk3
img_Info = ewf_Img_Info(ewf_handle)
try:
partitionTable = pytsk3.Volume_Info(img_Info)
except IOError:
print "Error!Could not determine partition type ", filenames
sys.exit(0)
#find partitions
for partition in partitionTable:
print partition.addr, partition.desc, "%s %s (%s)" % (
partition.start, partition.start * 512, partition.len)
if 'NTFS' in partition.desc:
fileSystemObject = pytsk3.FS_Info(img_Info,
offset=(partition.start * 512))
#Extract all files
directory = fileSystemObject.open_dir(path='/')
#find all the files of the system
extraction(directory, [], [])
ewf_handle.close()
def pyewf_test_multi_open_close_file(filename, mode):
print(
"Testing multi open close of: {0:s} with access: {1:s}\t".format(
filename, get_mode_string(mode)), end="")
result = True
error_string = None
try:
filenames = pyewf.glob(filename)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames, mode)
ewf_handle.close()
ewf_handle.open(filenames, mode)
ewf_handle.close()
except Exception as exception:
error_string = str(exception)
result = False
if not result:
print("(FAIL)")
else:
print("(PASS)")
if error_string:
print(error_string)
return result
def image_handle(imageFile, sha1Hash):
if (args.imagetype == "e01"):
filenames = pyewf.glob(imageFile)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
imagehandle = ewf_Img_Info(ewf_handle)
elif (args.imagetype == "raw"):
print "Raw Type"
imagehandle = pytsk3.Img_Info(url=imageFile)
partitionTable = pytsk3.Volume_Info(imagehandle)
for partition in partitionTable:
print partition.addr, partition.desc, "%ss(%s)" % (partition.start, partition.start * 512), partition.len
try:
filesystemObject = pytsk3.FS_Info(imagehandle, offset=(partition.start*512))
except:
print "Partition has no supported file system"
continue
print "File System Type Dectected ",filesystemObject.info.ftype
directoryObject = filesystemObject.open_dir(path=dirPath)
print "Directory:",dirPath
dic = directoryRecurse(filesystemObject, directoryObject,[], sha1Hash)
return dic
def pyewf_test_multi_open_close_file_objects(filename, mode):
print(
("Testing multi open close of file-like object of: {0:s} "
"with access: {1:s}\t").format(filename, get_mode_string(mode)), end="")
result = True
error_string = None
try:
filenames = pyewf.glob(filename)
file_objects = []
for filename in filenames:
file_object = open(filename, "rb")
file_objects.append(file_object)
ewf_handle = pyewf.handle()
ewf_handle.open_file_objects(file_objects, mode)
ewf_handle.close()
ewf_handle.open_file_objects(file_objects, mode)
ewf_handle.close()
except Exception as exception:
error_string = str(exception)
result = False
if not result:
print("(FAIL)")
else:
print("(PASS)")
if error_string:
print(error_string)
return result
def test_open_close(self):
"""Tests the open and close functions."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
# Test open and close.
ewf_handle.open(unittest.source)
ewf_handle.close()
# Test open and close a second time to validate clean up on close.
ewf_handle.open(unittest.source)
ewf_handle.close()
file_object = open(unittest.source, "rb")
# Test open_file_object and close.
ewf_handle.open_file_object(file_object)
ewf_handle.close()
# Test open_file_object and close a second time to validate clean up on close.
ewf_handle.open_file_object(file_object)
ewf_handle.close()
# Test open_file_object and close and dereferencing file_object.
ewf_handle.open_file_object(file_object)
del file_object
ewf_handle.close()
def test_read_buffer_at_offset(self):
"""Tests the read_buffer_at_offset function."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
ewf_handle.open(unittest.source)
file_size = ewf_handle.get_size()
# Test normal read.
data = ewf_handle.read_buffer_at_offset(4096, 0)
self.assertIsNotNone(data)
self.assertEqual(len(data), min(file_size, 4096))
# Test read beyond file size.
if file_size > 16:
data = ewf_handle.read_buffer_at_offset(4096, file_size - 16)
self.assertIsNotNone(data)
self.assertEqual(len(data), 16)
with self.assertRaises(ValueError):
ewf_handle.read_buffer_at_offset(-1, 0)
with self.assertRaises(ValueError):
ewf_handle.read_buffer_at_offset(4096, -1)
ewf_handle.close()
# Test the read without open.
with self.assertRaises(IOError):
ewf_handle.read_buffer_at_offset(4096, 0)
def bn_getimginfo(image_path):
logging.debug("bn_getimginfo: Image Info for image %s: ", image_path)
filenames = pyewf.glob(image_path)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
img = ewf_Img_Info(ewf_handle)
return img
def main(image,
img_type,
offset,
hashListFile,
evidence_Dir,
part_Type,
pbar_total=0):
matched_Hash_Files = {}
hash_List, type_of_Hash = get_Hash_Type(hashListFile)
volume = None
print("[+] Opening {}".format(image))
if img_type == "ewf":
try:
filenames = pyewf.glob(image)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Invalid EWF format:\n {}".format(e))
sys.exit(2)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
# Open PYTSK3 handle on EWF Image
img_info = EWFImgInfo(ewf_handle)
else:
img_info = pytsk3.Img_Info(image)
# The above code is taken from the "Combining pyewf with pytsk3" section of
# the python development page for pyewf
try:
if part_Type is not None:
attr_ID = getattr(pytsk3, "TSK_VS_TYPE_" + part_Type)
volume = pytsk3.Volume_Info(img_info, attr_ID)
else:
volume = pytsk3.Volume_Info(img_info)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Unable to read partition table:\n {}".format(e))
exit()
finished_fileDict = open_FS(volume, img_info, hash_List, type_of_Hash,
matched_Hash_Files, evidence_Dir, pbar_total)
for hash_Value in hash_List:
if hash_Value in finished_fileDict:
print("value for %r in finished_fileDict: %r" %
(hash_Value, finished_fileDict[hash_Value]))
else:
continue
finished_evidenceDict = os_Hash_Check(evidence_Dir, hash_List,
type_of_Hash)
for hash_Value in hash_List:
if hash_Value in finished_fileDict:
print("value for %r in finished_evidenceDict: %r" %
(hash_Value, finished_evidenceDict[hash_Value]))
else:
continue
def pyewf_test_read_file(filename): filenames = pyewf.glob(filename) ewf_handle = pyewf.handle() ewf_handle.open(filenames, "r") result = pyewf_test_read(ewf_handle) ewf_handle.close() return result
def test_seek_offset(self):
"""Tests the seek_offset function."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
ewf_handle.open(unittest.source)
file_size = ewf_handle.get_size()
ewf_handle.seek_offset(16, os.SEEK_SET)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 16)
ewf_handle.seek_offset(16, os.SEEK_CUR)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 32)
ewf_handle.seek_offset(-16, os.SEEK_CUR)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 16)
ewf_handle.seek_offset(-16, os.SEEK_END)
offset = ewf_handle.get_offset()
self.assertEqual(offset, file_size - 16)
ewf_handle.seek_offset(16, os.SEEK_END)
offset = ewf_handle.get_offset()
self.assertEqual(offset, file_size + 16)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-1, os.SEEK_SET)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-32 - file_size, os.SEEK_CUR)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-32 - file_size, os.SEEK_END)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(0, -1)
ewf_handle.close()
# Test the seek without open.
with self.assertRaises(IOError):
ewf_handle.seek_offset(16, os.SEEK_SET)
def readImageFile(self, imagefile):
filenames = pyewf.glob(imagefile)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
imagehandle = ewf_Img_Info(ewf_handle)
partitionTable = pytsk3.Volume_Info(imagehandle)
return partitionTable, imagehandle
def test_close(self):
"""Tests the close function."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
with self.assertRaises(IOError):
ewf_handle.close()
def test_close(self):
"""Tests the close function."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
with self.assertRaises(IOError):
ewf_handle.close()
def pyewf_test_read_file(filename):
filenames = pyewf.glob(filename)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames, "r")
result = pyewf_test_read(ewf_handle)
ewf_handle.close()
return result
def test_seek_offset(self):
"""Tests the seek_offset function."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
ewf_handle.open(unittest.source)
file_size = ewf_handle.get_size()
ewf_handle.seek_offset(16, os.SEEK_SET)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 16)
ewf_handle.seek_offset(16, os.SEEK_CUR)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 32)
ewf_handle.seek_offset(-16, os.SEEK_CUR)
offset = ewf_handle.get_offset()
self.assertEqual(offset, 16)
ewf_handle.seek_offset(-16, os.SEEK_END)
offset = ewf_handle.get_offset()
self.assertEqual(offset, file_size - 16)
ewf_handle.seek_offset(16, os.SEEK_END)
offset = ewf_handle.get_offset()
self.assertEqual(offset, file_size + 16)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-1, os.SEEK_SET)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-32 - file_size, os.SEEK_CUR)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(-32 - file_size, os.SEEK_END)
# TODO: change IOError into ValueError
with self.assertRaises(IOError):
ewf_handle.seek_offset(0, -1)
ewf_handle.close()
# Test the seek without open.
with self.assertRaises(IOError):
ewf_handle.seek_offset(16, os.SEEK_SET)
def pyewf_test_single_open_close_file(filename, mode):
if not filename:
filename_string = "None"
else:
filename_string = filename
print(
"Testing single open close of: {0:s} with access: {1:s}\t".format(
filename_string, get_mode_string(mode)), end="")
result = True
error_string = None
try:
filenames = pyewf.glob(filename)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames, mode)
ewf_handle.close()
except TypeError as exception:
expected_message = (
"{0:s}: unsupported string object type.").format(
"pyewf_glob")
if not filename and str(exception) == expected_message:
pass
else:
error_string = str(exception)
result = False
except ValueError as exception:
expected_message = (
"{0:s}: unsupported mode: w.").format(
"pyewf_handle_open")
if mode != "w" or str(exception) != expected_message:
error_string = str(exception)
result = False
except Exception as exception:
error_string = str(exception)
result = False
if not result:
print("(FAIL)")
else:
print("(PASS)")
if error_string:
print(error_string)
return result
def disk_open(path):
hash_val = calc_hash.get_hash(path, 'before')
try:
if pyewf.check_file_signature(path) == True:
filename = pyewf.glob(path)
ewf_handle = pyewf.handle()
ewf_handle.open(filename)
return disk_analysis.E01Analysis(ewf_handle, path, hash_val)
else:
return disk_analysis.DDAnalysis(path, hash_val)
except:
print(
"[Error] input file error by fortools\nPlease check your file")
return -1
def pyewf_test_read_file_object(filename):
filenames = pyewf.glob(filename)
file_objects = []
for filename in filenames:
file_object = open(filename, "rb")
file_objects.append(file_object)
ewf_handle = pyewf.handle()
ewf_handle.open_file_objects(file_objects, "r")
result = pyewf_test_read(ewf_handle)
ewf_handle.close()
return result
def pyewf_test_read_file_object(filename):
filenames = pyewf.glob(filename)
file_objects = []
for filename in filenames:
file_object = open(filename, "rb")
file_objects.append(file_object)
ewf_handle = pyewf.handle()
ewf_handle.open_file_objects(file_objects, "r")
result = pyewf_test_read(ewf_handle)
ewf_handle.close()
return result
def open_vol(self):
sys.stderr.write("[+] Opening {}\n".format(self.evidence))
# Handle EWF/Raw Images
if self.image_type == "ewf":
try:
filenames = pyewf.glob(self.evidence)
except IOError, e:
sys.stderr.write("[-] Invalid EWF format:\n {}\n".format(e))
raise IOError
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
# Open PYTSK3 handle on EWF Image
self.image_handle = EWFImgInfo(ewf_handle)
def test_get_offset(self):
"""Tests the get_offset function."""
if not unittest.source:
raise unittest.SkipTest("missing source")
filenames = pyewf.glob(unittest.source)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
offset = ewf_handle.get_offset()
self.assertIsNotNone(offset)
ewf_handle.close()
def get_img_object(self):
logging.info("Opening {}".format(self.evidence_file))
if self.evidence_type == "ewf":
try:
filenames = pyewf.glob(self.evidence_file)
except IOError:
_, e, _ = sys.exc_info()
print("[-] Invalid EWF format:\n {}".format(e))
sys.exit(2)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
img_object = EWFImgInfo(ewf_handle)
else:
img_object = pytsk3.Img_Info(self.evidence_file)
return img_object
def test_open(self):
"""Tests the open function."""
if not unittest.source:
return
ewf_handle = pyewf.handle()
ewf_handle.open(unittest.source)
with self.assertRaises(IOError):
ewf_handle.open(unittest.source)
ewf_handle.close()
with self.assertRaises(TypeError):
ewf_handle.open(None)
with self.assertRaises(ValueError):
ewf_handle.open(unittest.source, mode="w")
def main():
filenames = pyewf.glob("E:\\YK_F1\\cfreds_2015_data_leakage_pc.E01") # pyewf에서 연속된 ewf파일을 읽어 들이기 위해 .glob 사용
ewf_handle = pyewf.handle()
ewf_handle.open(filenames) # E01 이미지 파일에 대한 핸들을 오픈한다. (분할된 파일이 하나의 파일 처럼 열림)
img_info = ewf_Img_Info(ewf_handle) # ewf_Img_Info을 이용해서 이미지를 오픈한다. 객체의 생성자에서 super를 통해 pytsk 객체로 생성
vol = pytsk3.Volume_Info(img_info) # 이미지를 불러들여 볼륨 정보를 얻어온다. 이때 pytsk3 모듈을 사용한다.
output = open("result.csv", 'wb')
ext_cnt = open("ext_cnt.txt", 'w')
for part in vol:
print part.addr, part.desc, part.start, part.len # 볼륨 정보를 얻어와서 출력
if part.len > 2048:
fs = pytsk3.FS_Info(img_info, offset = part.start*vol.info.block_size) # 각 볼륨에 대한 파일시스템 정보를 얻어 온다.
directoryObject = fs.open_dir('/') # 루트 디렉토리부터 오브젝트를 연다.
recursive(directoryObject, [], output) # 디렉터리 탐색 시작
pass
cnt = Counter(ext_list) # 확장자별로 개수를 세기 위한 Counter 이용
for i in sorted(cnt.items(), key=itemgetter(1), reverse=True): # 확장자 갯수별로 정렬
ext_cnt.write(str(i) + '\n')
def test_read_buffer_file_object(self):
"""Tests the read_buffer function on a file-like object."""
if not unittest.source:
return
file_object = open(unittest.source, "rb")
ewf_handle = pyewf.handle()
ewf_handle.open_file_object(file_object)
file_size = ewf_handle.get_size()
# Test normal read.
data = ewf_handle.read_buffer(size=4096)
self.assertIsNotNone(data)
self.assertEqual(len(data), min(file_size, 4096))
ewf_handle.close()
def pyewf_test_seek_file_no_open(filename):
print("Testing seek of offset without open:\t", end="")
ewf_handle = pyewf.handle()
error_string = ""
result = False
try:
ewf_handle.seek(0, os.SEEK_SET)
except Exception as exception:
error_string = str(exception)
result = True
if not result:
print("(FAIL)")
else:
print("(PASS)")
if error_string:
print(error_string)
return result
def pyewf_test_read_file_no_open(filename):
print("Testing read of offset without open:\t", end="")
ewf_handle = pyewf.handle()
error_string = ""
result = False
try:
ewf_handle.read(size=4096)
except Exception as exception:
error_string = str(exception)
result = True
if not result:
print("(FAIL)")
else:
print("(PASS)")
if error_string:
print(error_string)
return result
def _OpenFileObject(self, path_spec):
"""Opens the file-like object defined by path specification.
Args:
path_spec: the path specification (instance of path.PathSpec).
Returns:
A file-like object or None.
Raises:
PathSpecError: if the path specification is invalid.
"""
if not path_spec.HasParent():
raise errors.PathSpecError(
u'Unsupported path specification without parent.')
parent_path_spec = path_spec.parent
file_system = resolver.Resolver.OpenFileSystem(
parent_path_spec, resolver_context=self._resolver_context)
# Note that we cannot use pyewf's glob function since it does not
# handle the file system abstraction dfvfs provides.
segment_file_path_specs = ewf.EWFGlobPathSpec(file_system, path_spec)
if not segment_file_path_specs:
return
if parent_path_spec.IsSystemLevel():
# Typically the file-like object cache should have room for 127 items.
self._resolver_context.SetMaximumNumberOfFileObjects(
len(segment_file_path_specs) + 127)
for segment_file_path_spec in segment_file_path_specs:
file_object = resolver.Resolver.OpenFileObject(
segment_file_path_spec, resolver_context=self._resolver_context)
self._file_objects.append(file_object)
ewf_handle = pyewf.handle()
ewf_handle.open_file_objects(self._file_objects)
return ewf_handle
def test_open_file_object(self):
"""Tests the open_file_object function."""
if not unittest.source:
return
file_object = open(unittest.source, "rb")
ewf_handle = pyewf.handle()
ewf_handle.open_file_object(file_object)
with self.assertRaises(IOError):
ewf_handle.open_file_object(file_object)
ewf_handle.close()
# TODO: change IOError into TypeError
with self.assertRaises(IOError):
ewf_handle.open_file_object(None)
with self.assertRaises(ValueError):
ewf_handle.open_file_object(file_object, mode="w")
def extractFile(imageFile,filenames):
if (args.imagetype == "e01"):
filenames = pyewf.glob(imageFile)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
imagehandle = ewf_Img_Info(ewf_handle)
elif (args.imagetype == "raw"):
print "Raw Type"
imagehandle = pytsk3.Img_Info(url=imageFile)
partitionTable = pytsk3.Volume_Info(imagehandle)
for partition in partitionTable:
print partition.addr, partition.desc, "%ss(%s)" % (partition.start, partition.start * 512), partition.len
try:
filesystemObject = pytsk3.FS_Info(imagehandle, offset=(partition.start*512))
except:
print "Partition has no supported file system"
continue
print "File System Type Dectected ",filesystemObject.info.ftype
directoryObject = filesystemObject.open_dir(path=dirPath)
print "Directory:",dirPath
outputPath = 'ex_differ_file'
for filename in filenames:
if not os.path.exists(outputPath):
os.makedirs(outputPath)
if not os.path.isdir(str(filename)):
try:
ex_path = ('%s/%s' % (outputPath, os.path.basename(str(filename)))).replace('//','/')
extractFile = open(ex_path,'w')
fileobject = filesystemObject.open(str(filename))
filedata = fileobject.read_random(0,fileobject.info.meta.size)
extractFile.write(filedata)
extractFile.close
except IOError:
print('cannot open', str(filename))
def read(self, offset, size):
self._ewf_handle.seek(offset)
return self._ewf_handle.read(size)
def get_size(self):
return self._ewf_handle.get_media_size()
argparser = argparse.ArgumentParser(description="Extract the $MFT from all of the NTFS partitions of an E01")
argparser.add_argument(
"-i", "--image", dest="imagefile", action="store", type=str, default=None, required=True, help="E01 to extract from"
)
args = argparser.parse_args()
filenames = pyewf.glob(args.imagefile)
ewf_handle = pyewf.handle()
ewf_handle.open(filenames)
imagehandle = ewf_Img_Info(ewf_handle)
partitionTable = pytsk3.Volume_Info(imagehandle)
for partition in partitionTable:
print partition.addr, partition.desc, "%ss(%s)" % (partition.start, partition.start * 512), partition.len
if "NTFS" in partition.desc:
filesystemObject = pytsk3.FS_Info(imagehandle, offset=(partition.start * 512))
fileobject = filesystemObject.open("/$MFT")
print "File Inode:", fileobject.info.meta.addr
print "File Name:", fileobject.info.name.name
print "File Creation Time:", datetime.datetime.fromtimestamp(fileobject.info.meta.crtime).strftime(
"%Y-%m-%d %H:%M:%S"
)
outFileName = str(partition.addr) + fileobject.info.name.name
def test_signal_abort(self):
"""Tests the signal_abort function."""
ewf_handle = pyewf.handle()
ewf_handle.signal_abort()
def __init__(self, filename): self.ewf_handle = pyewf.handle() filenames = pyewf.glob(filename) self.ewf_handle.open(filenames) super(Ewf_Img_Info, self).__init__()
# ---------------------------------------------------------------------------- # Main # ---------------------------------------------------------------------------- print "open_close.py " + __version__ + " (libewf " + pyewf.get_version() + ")\n" argc = len( sys.argv ) if argc < 2: print "Usage: open_close.py filename(s)\n" sys.exit( 1 ) filenames = sys.argv[ 1: ] handle = pyewf.handle(); if handle == None: print "Missing handle object\n" sys.exit( 1 ) try: # Open requires a list of filenames handle.open( filenames ) except: print "Unable to open file(s)\n" print sys.exc_info()[ 1 ]
