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#!/usr/bin/python
# -*- coding: utf-8 -*-
from pychrysalide import core
from pychrysalide.analysis.contents import EncapsulatedContent
from pychrysalide.analysis.contents import MemoryContent
from pychrysalide.plugins import PluginModule
import io
import zipfile
class ApkFiles(PluginModule):
"""Open and process APK files."""
_name = 'ApkFiles'
_desc = 'Add suppport for the APK file format'
_version = '0.1'
_url = 'https://www.chrysalide.re/'
_actions = ( PluginModule.PluginAction.CONTENT_EXPLORER, )
def _handle_binary_content(self, action, content, wid, status):
"""Process an operation on a binary content."""
assert(action == PluginModule.PluginAction.CONTENT_EXPLORER)
pseudo_file = io.BytesIO(content.data)
if zipfile.is_zipfile(pseudo_file):
# Handle bad ZIP files such as:
# c9ad0ec284fd988b294b28cb577bc0a28b1f7d129a14f2228f6548c6f7ed3d55
# Traceback (most recent call last):
# File "... plugins/python/apkfiles/apkfiles.py", line 41, in handle_binary_content
# zf = zipfile.ZipFile(pseudo_file)
# File "/usr/lib/python3.5/zipfile.py", line 1026, in __init__
# self._RealGetContents()
# File "/usr/lib/python3.5/zipfile.py", line 1114, in _RealGetContents
# fp.seek(self.start_dir, 0)
# ValueError: negative seek value -104578300
try:
zf = zipfile.ZipFile(pseudo_file)
except:
zf = None
if not(zf is None) \
and zf.namelist().count('classes.dex') > 0 \
and zf.namelist().count('AndroidManifest.xml') > 0:
explorer = core.get_content_explorer()
for name in zf.namelist():
# Handle bad ZIP files such as:
# 6e432c34d88e65fcd5967cc7cd2f0f4922dfc17ecc6e7acdfe0b1baf94c0851b
# Traceback (most recent call last):
# File "... plugins/python/apkfiles/apkfiles.py", line 64, in handle_binary_content
# f = zf.open(name, 'r')
# File "/usr/lib/python3.5/zipfile.py", line 1268, in open
# raise BadZipFile("Bad magic number for file header")
# zipfile.BadZipFile: Bad magic number for file header
try:
with zf.open(name, 'r') as f:
data = f.read()
except:
data = ''
# Skip directories and empty entries
if len(data) == 0:
continue
mem_content = MemoryContent(data)
encaps_content = EncapsulatedContent(content, name, mem_content)
explorer.populate_group(wid, encaps_content)
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