I specialize in Low-level Programming, Reverse Engineering, and Security Tool Development. My passion lies in understanding how software works at the binary level and building tools to manipulate it.

普段はPrivateリポジトリを中心に、C++や低レイヤー技術を用いた開発を行っています。 解析（Reverse Engineering）から、実用的なアプリケーション開発（GUI/Web）まで幅広く開発してます

Core & Low-Level

Analysis & Tools
IDA Ghidra Win32 API x86/x64 Assembly CUDA Memorydebugger

Web & AI

• High-Performance Internal Modding Framework
  • Designed a lightweight internal overlay and modding engine for DirectX 11 applications.
  • DirectX 11アプリケーション向けの、軽量な内部オーバーレイおよびModディングエンジンの開発。
  • Key Technologies & Architecture:
    • Graphics Pipeline: Hooked D3D11 Swapchain using Kiero to render custom UI via ImGui/ImFX.
    • Entity Management: Implemented EnTT (ECS) for high-performance entity component management, optimizing memory layout.
    • Core System: Built with Modern C++ (C++17/20), utilizing nlohmann/json for config serialization.
    • Low-Level Manipulation: Utilized MinHook for API detouring and libhat for robust signature scanning.
    • Networking: Asynchronous HTTP communication via WinHttpClient for cloud integration.

• Custom Mod Loader & Injector (C#, WPF, .NET)

  • Advanced launcher for UWP applications with DLL Injection & Process Instrumentation.
  • Features process optimization, memory management, and hardware monitoring using LibreHardwareMonitor.
  • UWPプロセスへのインジェクションおよび、メモリ最適化・ハードウェア監視機能を統合したランチャー開発。

• Binary Protection Research (C++)

  • String Obfuscation Library: Custom XOR and Substitution cipher implementation designed for intellectual property protection.
  • Anti-Analysis Research: Investigated techniques to mitigate static analysis by IDA/Ghidra.
  • 静的解析（IDA/Strings）耐性を持つ軽量難読化ライブラリの開発および、バイナリ保護技術の研究。

• Binary Analysis & Hooking

  • Experience with IDA for reconstructing function signatures in stripped binaries.
  • Implementing function hooks using assembly manipulation and memory writing for runtime behavior modification.

• RAG-based Doc Search API (Python, LangChain)

  • Developed a Retrieval-Augmented Generation system using ChromaDB, Flask, and Gemini/GPT-4.
  • Implemented optimized chunking strategies for handling large PDF datasets.
  • PDF読込からベクトル検索、回答生成までを行うRAGシステムのバックエンド構築。

• StemStudio (Python, C++)

  • AI-based music separation tool combining PyTorch and C++ for high-performance processing.
  • 音源分離AIを用いたデスクトップアプリ。バックエンドの一部をC++で高速化。

• Attendance Reminder (Chrome Extension)

  • Automated attendance tracking helper for students. Published on Chrome Web Store.
  • 学生生活を支援する、出席登録リマインダー拡張機能。

• MemoEx (Python, PyQt, QML)

  • High-performance memo application with "Always on Top" overlay features.
  • 常に最前面に表示される、高機能メモアプリケーション。

• PDF Report Generator (Python, Flet)

  • Markdown-to-PDF converter with real-time preview using Flet and ReportLab.
  • MarkdownからPDFを生成するGUIツール。MVCアーキテクチャを使用