Zhou K.
Full Stack Development | Game Reverse and Security Engineer
[ 20 Years of Game Security And Reverse Engineering Experience ] -Reverse analysis of Windows Game -Protocol reverse engineering and penetration testing -Custom software development -Software feature expansion and patching -Software data/function extraction -Windows driver development Reverse Engineering and Low-Level Skills: *Proficient in IDA Pro, WinDbg, xdbg64/32, Ghidra *Windows kernel analysis and memory patching *Game data analysis, protocol vulnerability/penetration testing *Game data extraction *Game module function invocation *Software feature expansion/patching *Ring0 level memory read/write and memory page protection *Ring0 process hiding *Ring0 shellcode injection *Ring3 level DLL injection *PTE Hide *Unattach mem read/write *Traceless PE loading and execution *APC DLL injection Android Reverse Engineering and Low-Level Skills: *APATCH *Dobby SO level hook. *LSPOSED hook. *Firda Script *Smlai code modify. *ARM asm *APK file merge *APP patching Red Team Attacker Testing: *Game Anti-Cheat [ida/xdbg/driver/asm/c++/vmware/vt] *Game network protocol logic vulnerability testing [C/C++/ASM/DLL Injection] *Gaming network protocol penetration testing [C/C++/ASM/DLL Injection] *Developed proprietary tools using [Golang/Python] *DLL injection interface testing using [C/C++/ASM/DLL Injection] *XRay [web] *BurpSuite [web] Development Skills: *Driver development using [C/Assembly] *Android development with [Java/Flutter] *Server/backend system development in [PHP/Golang] *Application development in [C/C++/C#/Golang/Lua/Rust] *Auxiliary scripting in [JavaScript/VBS] *Frontend web development with [Vue2/3/TypeScript/CSS] Databases: *MySQL, *SQLite *MariaDB *Access DB *SQLServer ------------------------*Full Stack Development*------------------------------ [ Over 10 years of experience in Windows reverse engineering and development ] - Windows desktop applications - Windows DLL development - Windows DLL/kernel injection - Windows kernel driver development (32/64-bit) - Windows kernel debugging - Cross-platform desktop application development using Tauri and Flutter - Static analysis and reverse engineering of applications/games - Network protocol analysis and penetration testing - Basic experience with Cocos, Unity, and UE5 game development - Sockets development * Programming Languages: C/C++, Rust, ASM (32/64-bit), Golang, C#, Lua, JavaScript, TypeScript, Python, Java,VB6 * Frameworks & Libraries: WTL, MFC, WPF, WDK, WinSDK, DirectX, DuiLib * Engines: Cocos2dx, LUAEngine, JsEngine, Unity, UE5 * Reverse Engineering Tools: IDA Pro, WinDbg, OllyDbg, WinHex, 010 Editor [ Over 3 years of experience in Android reverse engineering and development ] - Native Java App development - NDK SO development - Dobby native hook - Xposed/Lsposed module development - Static analysis and dynamic debugging - APK merging tool development - H5 game development * Programming Languages: C/C++, Java, JavaScript * Reverse Engineering Tools: Frida, IDA Pro, Ghidra, Jadx, JEB, ApkTool, 010 Editor * Frameworks & Libraries: Xposed/Lsposed, Egreat, ReactNative, ReactJS, NDK [ Over 3 years of web development experience ] Frontend Development: - Frameworks: ReactJS, Vue - Languages: TypeScript, CSS, HTML, JavaScript, Rust (WebAssembly) - Libraries: MUI/JOY UI, Tailwind, ElementUI, Layui Backend Development: - Frameworks: Actix-Web, GoFrame2, Spring Boot - Languages: Lua, Python, PHP, Golang, Rust, Java - Databases: PostgreSQL, MySQL/MariaDB
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $68k
Billed in all: $247,998$248k
$68k in the last 6 months
Across 38 contracts
Earnings, last 30 days
Skill rankings: #1 in 6 skills of 15
Rarest: top 0.12% in Game Testing, of 852. Ranked by MRR among everyone on Upwork with the skill.
- Game Testing852 freelancers · 🇨🇳 #1Top 0.12%🇨🇳#1 of 8
- Ethical Hacking320 freelancers · 🇨🇳 #1Top 0.31%🇨🇳#1 of 1
- Game Development Bug Fix269 freelancers · 🇨🇳 #1Top 0.37%🇨🇳#1 of 1
- Network Penetration Testing212 freelancers · 🇨🇳 #1Top 0.47%🇨🇳#1 of 1
- Internet Protocol Security21 freelancers · 🇨🇳 #1Top 5%🇨🇳#1 of 1
- Anti-Cheat Plugin2 freelancers · 🇨🇳 #1Top 50%🇨🇳#1 of 1
- Vulnerability Assessment519 freelancers · 🇨🇳 #1Top 0.39%🇨🇳#1 of 1
- Assembly Language129 freelancers · 🇨🇳 #1Top 2%🇨🇳#1 of 2