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import androguard.core.bytecodes.apk # type: ignore
from karton.core import Karton, Task # type: ignore
from .__version__ import __version__
class Android(Karton):
"""
Augment apk files with various metadata.
"""
identity = "karton.android"
version = __version__
filters = [
{"type": "sample", "extension": "apk"},
]
def process(self, task: Task) -> None:
sample = task.get_resource("sample")
a = androguard.core.bytecodes.apk.APK(sample.content, raw=True)
if not a.is_valid_APK():
self.log.info("Not a valid APK file.")
return
metadata = {
"package": [a.package],
"activities": sorted(a.get_activities()),
"main_activity": [a.get_main_activity()],
"permissions": sorted(a.get_permissions()),
}
if a.is_signed() or a.is_signed_v3():
certs = a.get_certificates()
if len(certs):
cert = certs[0]
sha1_cert = cert.sha1_fingerprint.replace(" ", "")
metadata["certificate"] = [sha1_cert]
self.send_task(
Task(
headers={
"type": "sample",
"stage": "analyzed",
},
payload={"sample": sample, "attributes": metadata},
)
)
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