The upload request is one step in a workflow
An Android upload can begin with a metadata call, continue through a signed storage URL, then finish with a confirmation call. Large files may be split into parts and joined by a final request. The app can also resize an image, encrypt a document, calculate a hash or request a fresh token before sending any bytes.
We trace the file from the Android picker or generated content into the network client. This shows the real filename, media type, form field, byte changes and headers. We also follow the response into the next app action so an uploaded object becomes usable instead of stopping at a successful transfer.
Recover multipart and direct-body uploads
For multipart/form-data, each part has its own headers and content. The boundary separates parts in the body. We recover text fields, file fields, filenames, media types and their exact order when signing depends on the encoded body. Direct uploads may send the raw file with PUT or POST to the API or object store.
- Map create, upload, complete, status and delete calls.
- Reproduce multipart bodies, raw uploads and signed URLs.
- Handle chunk size, part numbers, checksums and resume state.
- Copy required storage headers without leaking unrelated app headers.
- Parse progress, processing status and final asset records.
Rebuild the bytes the server expects
The selected file may not be the uploaded file. Android code can rotate an image, remove metadata, transcode media, compress data or wrap it in encryption. We compare input bytes with the request body and trace each transform. Download flows get the same treatment, including range requests, manifests, decryption and integrity checks.
Signatures may cover the content hash, byte length, media type, path and expiry time. A small change can invalidate the upload. The finished clients build the body first, calculate every dependent value in the correct order, then send it with live authentication and retry rules.
The full delivery
You receive a callable API for the full APK in Python and JavaScript/TypeScript, plus a Postman collection. The clients cover every recovered endpoint and workflow. They create fresh signatures, encrypt requests, decrypt responses, keep authentication and session state, and follow the same request order as the app.
Each client includes clear input models, parsed outputs, refresh behavior, uploads, downloads, streaming events and useful errors where the app uses them. We test the delivery against the live service so it runs without copied requests or old tokens.
Reviewed 30 August 2026 · SReverse research desk