--- title: Sharkfin Bites Attack Shark | daily.dev description: JR Lanteigne reverse-engineered the proprietary configuration protocol used by Attack Shark keyboards (and 522+ rebranded variants built on ROYUAN hardware)... canonical: https://daily.dev/posts/sharkfin-bites-attack-shark-94br2hvuf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Sharkfin Bites Attack Shark | daily.dev og:description: JR Lanteigne reverse-engineered the proprietary configuration protocol used by Attack Shark keyboards (and 522+ rebranded variants built on ROYUAN hardware)... og:url: https://daily.dev/posts/sharkfin-bites-attack-shark-94br2hvuf og:image: https://api.daily.dev/og/posts/94bR2hVuF.png og:image:alt: Sharkfin Bites Attack Shark og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Sharkfin Bites Attack Shark **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 0 upvotes · 0 comments ## Summary JR Lanteigne reverse-engineered the proprietary configuration protocol used by Attack Shark keyboards (and 522+ rebranded variants built on ROYUAN hardware) after finding the official software was Windows-only. By patching the Electron-based config app to run on Linux and logging configuration sessions, he mapped out the full protocol — navigating challenges like two firmware generations and flash-write boot loops. The result is Sharkfin, an open web app that lets users configure their keyboards on any platform. The protocol is also fully documented on GitHub. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [StrikeShark: a new campaign involving a custom SharkLoader and Cobalt Strike Beacon](https://daily.dev/posts/strikeshark-a-new-campaign-involving-a-custom-sharkloader-and-cobalt-strike-beacon-u7eag9vxh) · Securelist · 0 upvotes · 0 comments - [A Keyboard With No Keys](https://daily.dev/posts/a-keyboard-with-no-keys-u7ispwar2) · Hackaday · 0 upvotes · 0 comments --- Tags: [#reverse-engineering](https://daily.dev/tags/reverse-engineering), [#electron](https://daily.dev/tags/electron) [View this post on daily.dev](https://daily.dev/posts/sharkfin-bites-attack-shark-94br2hvuf) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Sharkfin Bites Attack Shark","url":"https://daily.dev/posts/sharkfin-bites-attack-shark-94br2hvuf","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/sharkfin-bites-attack-shark-94br2hvuf"},"datePublished":"2026-07-28T15:32:43.316Z","dateModified":"2026-07-28T15:54:28.045Z","description":"JR Lanteigne reverse-engineered the proprietary configuration protocol used by Attack Shark keyboards (and 522+ rebranded variants built on ROYUAN hardware)...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d1c99020c982350d13a036418c40046b?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d1c99020c982350d13a036418c40046b?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hackaday","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hackaday","logo":"https://media.daily.dev/image/upload/s--JhDfhy70--/f_auto,q_auto/v1767541814/logos/hackaday","url":"https://daily.dev/sources/hackaday"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/sharkfin-bites-attack-shark-94br2hvuf","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"reverse-engineering,electron","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hackaday","item":"https://daily.dev/sources/hackaday"},{"@type":"ListItem","position":3,"name":"Sharkfin Bites Attack Shark"}]} ```