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Hi there! I'm Leystryku 👋

💻 Development & Exploit Research | 🌴 Germany

About Me

  • 📊 Self-taught Software Engineer since the age of 11.
  • ⚡️ Degree in Computer Science (B.Sc. CompSci)
  • 👨‍💻 Really enjoy reverse engineering stuff, finding exploits, tinkering with embedded systems, and other IT related fun things
  • 🕺 I love dancing

Programming Languages

I am a polyglot software engineer. A list of programming languages I used previously, as well as first contact. I try to interact with IT or software engineering daily. Some of my work is on GitHub.

frequently using or used at some point
  • Lua (age: 12)
  • C++ (age: 15)
  • C (age: 15)
  • C# (age: 16)
  • Java (age: 20)
  • Racket (age: 22)
  • Flutter/Dart (age: 23)
  • ASM (age: 15) (focus on IA-32/x86, Atmel AVR Instruction Set - ATMega etc)
  • SQL (age: 15) (MySQL, MsSQL)
never used frequently or dislike
  • VB (age: 23)
  • Javascript (age: 15)
  • PHP (age: 15)
  • HTML (age: 15)
  • CSS (age: 15)
  • AutoIt (age: 11)

leystryku's Projects

codechallenge icon codechallenge

A code challenge supermarket kata thing created within around 1 hour I believe to get a job. My C# was a little bit rusty at the time but I got the job

die_awesomium icon die_awesomium

A dummy dll which replaces awesomium, might work for multiple Awesomium versions

dogui icon dogui

Hello DoGUI: (not yet completed) Bloat-free Graphical User interface for C++ with minimal dependencies and a sleek default design

easyrender icon easyrender

A setup for easy rendering for your games n shit

flowstream icon flowstream

A source engine cheat which I created before I made Nikyuria

garrysmod_common icon garrysmod_common

A repository of common bits for compilation projects based on Garry's Mod.

gm_cwin icon gm_cwin

A module which allows manipulating windows using gmod

gm_sourcenet icon gm_sourcenet

A module for Garry's Mod that provides interfaces to many systems of VALVe's engine, based on gm_sourcenet3.

gmbc icon gmbc

bytecode loader for gmod servers

gmodluacompiler icon gmodluacompiler

A Lua Compiler for Garry's Mod using its Lua API to compile Lua to Lua BC

gmodluaproxyd icon gmodluaproxyd

An attempt of doing a gmod lua proxy, differentley. No, it does not work out of box.

hedonist icon hedonist

Very old attempt at a game engine. I eventually lost motivation and left this project alone on my hard drive.

imgui icon imgui

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

jsonapiserializer icon jsonapiserializer

JsonApiSerializer supports configurationless serializing and deserializing objects into the json:api format (http://jsonapi.org).

katazuro icon katazuro

A lua injector for Garry's Mod which allows you to run lua code on servers which normally prevent clients from running lua. Also very old.

lac icon lac

A serverside A Garry's Mod Module for an old AntiCheat of mine - Hooks into the receiving of queried cvar information & the receiving of net_StringCmd commands from the clients.

ledstrip_esp8266_and_arduino icon ledstrip_esp8266_and_arduino

A project to change the color of a RGB LED strip depending on what you're watching on your screen right now. Linux only. Arduino version works via UART/USB, ESP8266 via WiFi.

legacyleyac icon legacyleyac

Abandoned clientside AntiCheat from ~2012~2014 which was the market leader

leycrashwin icon leycrashwin

I once experienced some BSOD when writing a normal application while not doing anything weird. I tried replicating the behaviour, but it could not be replicated. That replication attempt is this project.

leyrat icon leyrat

A sleek remote administration tool

leyservermessage icon leyservermessage

Garry's Mod module for sending a sv->cl SourceEngine net_SetConVar to a client. Used this for testing a exploit idea I had.

leysourceengineclient icon leysourceengineclient

A source engine network client implementation based on some of my reversing work from 2016 with basic functionality ( joining servers, talking, receiving/sending voicedata etc. ). Made this & reversed netchan to learn about Sources networking.

leysourceengineproxyserv icon leysourceengineproxyserv

Ley Proxy Servers for Source engine servers - Zyre. Think of cloudflare but for source engine and with geo-cast based server ping enhancing for free. I've created this tool to A. protect my servers by hiding their real IP entirely. The only visible IPs will be the node IPs. And B. to artifically enhance the ping on the server list of source servers to get more players to join. Unlike anycast this does not have any costs besides your server costs. It avoids duplicates by only letting the location geographically closest (latitude, longtitude) respond to the user. This could potencially be enhanced by using e.g. automatic detection of nodes being down/up or automatic IP switching combined with GSLT to basically make your servers non ddosable.

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