error in reflutter apk

[ouyanglong721]

I used reflutter to reverse engineer the APK and generated an APK. Then I used blutter to continue to reverse engineer the APK, but an error occurred。

➜ blutter git:(main) python3 blutter.py ../../so/arm64-v8a ../out
Traceback (most recent call last):
File "/root/project/reverse/utils/blutter/blutter.py", line 168, in
main(args.indir, args.outdir, args.rebuild, args.vs_sln, args.no_analysis)
File "/root/project/reverse/utils/blutter/blutter.py", line 100, in main
dart_version, snapshot_hash, flags, arch, os_name = extract_dart_info(libapp_file, libflutter_file)
File "/root/project/reverse/utils/blutter/extract_dart_info.py", line 120, in extract_dart_info
commit_id, dart_version = get_dart_commit(sdk_url)
File "/root/project/reverse/utils/blutter/extract_dart_info.py", line 80, in get_dart_commit
with requests.get(url, headers={"Range": "bytes=0-4096"}, stream=True) as r:
File "/usr/local/python3/lib/python3.10/site-packages/requests/api.py", line 73, in get
return request("get", url, params=params, **kwargs)
File "/usr/local/python3/lib/python3.10/site-packages/requests/api.py", line 59, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/local/python3/lib/python3.10/site-packages/requests/sessions.py", line 575, in request
prep = self.prepare_request(req)
File "/usr/local/python3/lib/python3.10/site-packages/requests/sessions.py", line 486, in prepare_request
p.prepare(
File "/usr/local/python3/lib/python3.10/site-packages/requests/models.py", line 368, in prepare
self.prepare_url(url, params)
File "/usr/local/python3/lib/python3.10/site-packages/requests/models.py", line 439, in prepare_url
raise MissingSchema(
requests.exceptions.MissingSchema: Invalid URL 'None': No scheme supplied. Perhaps you meant https://None?

[worawit]

Why don't you use original libflutter.so with Blutter?

reflutter build their own libflutter.so, so it is obvious that the script cannot find flutter version from official release archive.

[ouyanglong721]

Why don't you use original libflutter.so with Blutter?

reflutter build their own libflutter.so, so it is obvious that the script cannot find flutter version from official release archive.

Of course i can use original, and i also do it,but i think it’s a better way to help me to analyze flutter app by blutter and reflutter ,because i can use blutter to hook and use reflutter to anaylyse http requests.

[worawit]

Blutter only uses libflutter.so for getting Dart version. All output is from libapp.so only.

[ouyanglong721]

Ok.thanks for replying.