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Apple Bug Hunter...
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Apple Bug Hunter...
274 followers · 583 following

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Achievement: Starstruckx2Achievement: Pull SharkAchievement: YOLOAchievement: Quickdraw

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speedyfriend433/README.md

👨‍💻 speedyfriend67

Hey, I'm Jian. I like breaking iOS security mitigations and building weird tools with Swift.

My main focus right now is Apple Bug Bounty program hunting logic bugs, kernel issues, and writing PoCs.

Recent Security Research

  • CVE-2025-46280 (Assigned Dec 2025)

    • Impact: An app may be able to cause unexpected system termination
    • Description: An out-of-bounds read was addressed with improved bounds checking.

  • CVE-2026-20654

    • Impact: An app may be able to cause unexpected system termination
    • Description: The issue was addressed with improved memory handling.

  • CVE-2026-28867

    • Impact: An app may be able to leak sensitive kernel state
    • Description: This issue was addressed with improved authentication.

The Tech Stack

  • Reversing: IDA Pro, Ghidra, Hopper Disassembler
  • Dev: Swift (SwiftUI)
  • Focus: Bugs in Apple deviecs

Projects

  • IPASigner – Sign & inject tweaks into .ipa files on the fly.
  • ReDyne – Attempting to build a proper native decompiler for iOS.
  • DexLoom – iOS app for running native APKs (Work in Progress).
  • UniGram – Simple app to scrape and push university notifications.

Contact: DM me on Discord, Twitter (@Speedyfriend433) or email speedyfriend433@gmail.com

🇰🇷 / 🇺🇸

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  1. ReDyne ReDyne Public

    A native decompiler app for iOS!

    Swift 273 24

  2. DexLoom DexLoom Public

    A brand new simple APK Runner on jailed iOS! In progress for a looong time..

    C 30 6

  3. Swifile-FileManager-2-Swift Swifile-FileManager-2-Swift Public

    Swift 23 3

  4. mdcX mdcX Public

    Experimental Project with file zeroing technique

    Swift 38 2

  5. Xenex Xenex Public

    A powerful framework for injecting custom code into iOS applications

    C 26 3

  6. UniGram UniGram Public

    Unigram is an iOS app that can show forum posts without actually entering the website. currently, supporting specific University

    Swift 2