$ cat about.txt

Fiereu

Software engineer with a soft spot for cybersecurity. I reverse engineer games, take network protocols apart, and build the tools I need along the way, mostly in Java and Kotlin.

$ ls projects/ | slideshow

OpenMMO active

Open-source, drop-in PokeMMO server in Kotlin on Netty. Now developed under the openmmo-org organization.

Kotlin

schimmer.cc active

A Minecraft server I run for friends, and anyone else brave enough to join.

Minecraft

ByteDex wip

The planned successor to ppe. Packet interception and editing for PokeMMO.

Kotlin

lua.kt active

A small toy Lua implementation written in Kotlin.

Kotlin

Kaffesatz private

Private JVM bytecode analysis and mutation framework for building and defeating obfuscators.

Kotlin

ppe archive

Transparent TLS proxy that intercepts and modifies PokeMMO packets. Archived, superseded by ByteDex.

Java

$ ls -lt posts/ 4 entries

2026-07-01 PokeMMO Network Protocol 1: Getting Connected #PokeMMO #Reverse Engineering #Java #Packets 2024-01-01 PokeMMO Packet Structure #PokeMMO #Packets 2023-12-15 PokeMMO Packet Snooper 2 #PokeMMO #Reverse Engineering #Java #Packets #Game Hacking 2023-05-18 PokeMMO Packet Snooper 1 #PokeMMO #Reverse Engineering #Java #Packets #Game Hacking

$ ls posts/ --all →