Case study

Attack Shark K86: recovering HID controls from the official driver

Attack Shark K86 reconstructs the yc3121 keyboard's HID controls from analysis of its official driver with REA. The notes describe 64-byte feature reports, checksums and commands; a Windows Electron client uses them to set lighting, per-key colours and the 240 × 135 display.

Targets: Protocol
Category: Community REA investigations
Relationship: Author-reported mixed workflow
Sources reviewed: 2026-11-06

Stars: 0
Last commit: 2026-11-01
Language: JavaScript
License (GitHub): MIT

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: Windows and an Attack Shark K86 with yc3121 chip, VID 3151 and PID 4015; USB cable use was tested.
Prerequisites: Node.js 24 is required to run the source version.
Limits: The yc3123 model uses a different protocol; 2.4 GHz and Bluetooth connections were not tested.
License: MIT licence.

Cite

BibTeX

@misc{attack-shark-k86-case,
  title = {{Attack Shark K86: recovering HID controls from the official driver}},
  howpublished = {\url{https://github.com/brunoalbertdf-oss/attack-shark-k86}},
  url = {https://github.com/brunoalbertdf-oss/attack-shark-k86},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/attack-shark-k86-case/}}
}

Plain text

Attack Shark K86: recovering HID controls from the official driver. https://github.com/brunoalbertdf-oss/attack-shark-k86 (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/attack-shark-k86-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · brunoalbertdf-oss/attack-shark-k86 · Revision 29d9cf5
docs/PROTOCOLO.md GitHub · brunoalbertdf-oss/attack-shark-k86 · Revision 29d9cf5
docs/ENGENHARIA-REVERSA.md GitHub · brunoalbertdf-oss/attack-shark-k86 · Revision 29d9cf5