elleoma@logs ~ > ls

elleoma

I’m a Ukrainian student and a unix/linux & open-source enthusiast, trying to get into cybersecurity, gain some practical skills.

My skills are:

  • Cybersecurity
  • Penetration testing
  • Low-level programming: C, Rust, Assembly (RISC-V, x86-64), C++, Zig
  • Self-hosting
  • Malware developmnet
  • Reverse engineering (IDA, Ghidra, NinjaBinary)
  • A little bit of 3D
  • A little bit of game development

Some projects I have

Facinus

Since our college switched from Windows to Ubuntu, I had a cool idea to remotely control my classroom PCs.

I discovered gsocket.io and started developing a tool that deploys a local web admin panel to collect logs from connected clients.

I used an Ubuntu VM in QEMU and Bash scripted everything with some help of AI.

OS-in-1000-lines

OS Repo

My implementation of Operating System in 1000 lines by Shinya Yanagita.

A small operating system written from scratch for RISC-V CPU architecture.

This project will have basic context switching, paging, user mode, a command-line shell, a disk device driver, and file read/write operations in C.

And also I'll try to add some more functionality to it.

Right now I'm still working on basic stuff before implementing something new.

I'm still learning C and Assembly, the RISC-V instruction set is new to me.


Cybersecurity

I’ve been into cybersecurity for about 2 years now. I started with the normie setup — Kali Linux dual-booted next to Windows, learning through trial and error.

Eventually I spent more time on Linux, moved to KDE, configured everything myself, riced my terminal. Later switched to Arch and Hyprland.

I still have lots to learn, and I’d love to document all the tools and techniques I come across.

HackTheBox

My HTB profile

HTB gave me that initial hands-on boost I needed. As of right now I’ve solved more than 50 boxes (3 of them “Insane”: DarkCorp, Mist, and MassGarden).

Even though I sometimes rely on writeups and walkthroughs, I learn a lot from the infrastructure behind each box.


Bug bounty

Bug bounty is fascinating — legally hacking in-scope apps and possibly earning money.

But as a beginner, it’s tough. Recon is time-consuming, and rewards don’t always justify the effort unless you're really skilled.

I’ve tried a few programs but haven't found any serious vulnerabilities yet. I plan to shift my focus toward learning specific attack techniques and improving my skills first.


My self-hosting setup

Self-hosting

I have a Raspberry Pi 5 with 4GB of RAM running DietPi and nixpkgs (I hate outdated Debian packages).

Currently hosting a bunch of stuff on it via Docker containers with help of desec.io.


Contact Me

You can reach me via the following channels:


My setup

I use Arch Linux on a laptop — it just works and lets me get things done. I run Hyprland and use NVChad for Neovim.

Here’s my fastfetch output:

elleoma@logs ~/coolstuff > fastfetch

                    ▄                         💻️ OS info:
                   ▟█▙                     ┌────────────────────────────────┐
                  ▟███▙                       OS: Arch Linux x86_64
                 ▟█████▙                      Kernel: Linux 6.15.9-arch1-1
                ▟███████▙                     Packages: 2103
               ▂▔▀▜██████▙                    Display: 1920x1080@144 Hz
              ▟██▅▂▝▜█████▙                   WM: Hyprland 0.50.1
             ▟█████████████▙                  Terminal: tmux 3.5a
            ▟███████████████▙              └────────────────────────────────┘
           ▟█████████████████▙
          ▟███████████████████▙               ⚙️ Hardware:
         ▟█████████▛▀▀▜████████▙           ┌───────────────────────────────────┐
        ▟████████▛      ▜███████▙             CPU: Intel Core i7-12650H
       ▟█████████        ████████▙            GPU1: GeForce RTX 4060 / Mobile
      ▟██████████        █████▆▅▄▃▂           GPU2: UHD Graphics
     ▟██████████▛        ▜█████████▙          GPU1 Driver: nvidia
    ▟██████▀▀▀              ▀▀██████▙         GPU2 Driver: i915
   ▟███▀▘                       ▝▀███▙        Memory: 5.04 GiB / 15.32 GiB
  ▟▛▀                               ▀▜▙   └────────────────────────────────────┘

                
elleoma@logs ~/coolstuff >

My dotfiles are here: dotfiles