Case study

FlyBird-ProtocolAnalysis: FlyBird client subscription protocol and APXS v2 format

FlyBird-ProtocolAnalysis investigates the FlyBird proxy client's subscription delivery and APXS v2 format across Windows, Android, Linux and OpenWrt. Its reports describe client static analysis, process-memory inspection, GDB breakpoints and TLS observation; accompanying code decrypts the envelope and reproduces the documented mTLS request flow using user-supplied account credentials and certificates from the user's installed client.

Targets: App · Binary · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 3
Last commit: 2026-10-30
Language: Python

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: Subscription retrieval requires user-supplied account credentials and certificate files exported from the user's installed client.
Prerequisites: The source describes Python 3, with additional client binaries and GDB for some tracing routes.
Testing evidence: The author reports byte-for-byte matching of decrypted output and an approximately eight-second protocol route.
License: MIT.

Cite

BibTeX

@misc{flybird-protocol-analysis-case,
  title = {{FlyBird-ProtocolAnalysis: FlyBird client subscription protocol and APXS v2 format}},
  howpublished = {\url{https://github.com/Angel-Gril/FlyBird-ProtocolAnalysis}},
  url = {https://github.com/Angel-Gril/FlyBird-ProtocolAnalysis},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/flybird-protocol-analysis-case/}}
}

Plain text

FlyBird-ProtocolAnalysis: FlyBird client subscription protocol and APXS v2 format. https://github.com/Angel-Gril/FlyBird-ProtocolAnalysis (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/flybird-protocol-analysis-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

docs/01-overview.md GitHub · Angel-Gril/FlyBird-ProtocolAnalysis · Revision a832a47
README.md GitHub · Angel-Gril/FlyBird-ProtocolAnalysis · Revision a832a47
docs/02-client-architecture.md GitHub · Angel-Gril/FlyBird-ProtocolAnalysis · Revision a832a47