Apr 6, 2026
Daily AlpacaHack - The horn Crypto Challenge Writeup
The failures in previous challenges become the solution for this one.
02loveslollipop
02Labs is my portfolio for systems engineering, data work, security experiments, and technical writeups.
Introduction
Hi, I'm 02loveslollipop. I love technology, engineering, and building things in general. Even tough I'm a Computer and systems engineer & Data science engineer, I have a wide range of interests and like to explore different areas. 02Labs is my personal portfolio site, where I share projects, writeups, and other content related to my interests and work.
Focus (Or lack thereof)
I love lot's of things as you will see in my projects and blog. I think the best way to understand the world is by building, but something shouldn't be built just for the sake of building. I like to build things that are interesting, that solve problems, or that are just fun to me. But also I don't like to be superficial in what I learn whatever the topic is, for me that's a way to show respect to that thing and to myself.
2026 CTF Participations
Overall rating place: 40 — 121.352 pts
| Place | Event | CTF pts |
|---|---|---|
| 131 | Srdnlen CTF 2026 Quals | 250.0000 |
| 24 | EHAX CTF 2026 | 5312.0000 |
| 10 | Batman's Kitchen CTF 2026 | 10689.0000 |
| 31 | BITSCTF 2026 | 2672.0000 |
| 34 | TaipanByte’s Chart CTF | 5730.0000 |
| 291 | 0xFUN CTF 2026 | 1903.0000 |
| 12 | Nullcon Goa HackIM 2026 CTF | 5262.0000 |
| 63 | PascalCTF 2026 | 6413.0000 |
Blog
Writeups, notes, and long-form breakdowns.
Apr 4, 2026
RITSEC CTF - Zipped Forensic Challenge Writeup
Why the hell are ZIP challenges always so hard?
Mar 27, 2026
TAMUctf 2026 - Forensic writeup: Phantom2
Could private forks on GitHub be not as private as we think?
Mar 24, 2026
Daily AlpacaHack - Bloom Crypto Challenge Writeup
How does a single number convert a perfect secrecy encryption scheme into a completely insecure one?
Featured projects
Five highlights. Static pages, crawlable links, and details below.
Featured
OpenCROW
Offensive-workflow workstation bootstrap for Codex agents with a dedicated Conda environment and domain-specific tooling.
BashPythonCodex SkillsAgents
Featured
MiPedido
Integrated shared ordering and ahead-order management platform with real-time WebSocket support.
Node.jsDockerWebSocketsCron Jobs
Featured
Discord GPT Chat Bot
Python Discord bot powered by OpenAI GPT‑3.5 with customizable behavior via system roles.
PythonDiscord APIOpenAI GPT-3.5YAML
Featured
Bad Apple ESP32 Utilities
High-performance developer utilities that encode and play the Bad Apple video on ESP32 microcontrollers using composite video output.
PythonNumbaCuPyESP32
Featured
LoRa L298N Tank Controller
End-to-end IoT tank control system using LoRa radios, ESP32/ESP8266, and cloud microservices.
C/C++PythonLoRaRedis Streams
OpenCROW
OpenCROW is an offensive-workflow workstation bootstrap for Codex agents that provisions a dedicated Conda environment, installs native and Python tooling for pwn, reversing, cryptography, and protocol analysis, and syncs vendored skills into ~/.codex/skills for tighter, domain-specific agent routing. It is designed to reduce setup friction during CTFs and security research by giving both the user and the agent a reproducible, modular, ready-to-use environment.
- Modular toolbox design with separated crypto, pwn, reversing, network, and async workflow skills
- Bootstrap installer for Conda-based CTF environments on Ubuntu and Debian systems
- Integrated native tooling for exploitation, debugging, symbolic execution, disassembly, and analysis
- Vendored Codex skills for persistent SSH, TCP, SageMath, and Minecraft-based challenge workflows
BashPythonCodex SkillsAgentsCybersecurity
MiPedido
MiPedido delivers a seamless ordering experience by unifying client, vendor, and administrator interfaces into a single ecosystem. With real‑time notifications via WebSockets, containerized backend services, and dedicated mobile/web applications, it makes managing group orders and advance purchases effortless and efficient for businesses and their customers.
Node.jsDockerWebSocketsCron JobsMobile Apps
Discord GPT Chat Bot
DiscordGPTChatBot is a lightweight Python Discord bot that leverages OpenAI’s GPT‑3.5 with customizable system roles, giving server owners full control over the personality and responses of the AI. Configure behavior in a simple YAML file, run the included scripts, and watch as GPT‑powered conversations come to life in your Discord channels—with queueing, TTS options and easy deployment baked in.
PythonDiscord APIOpenAI GPT-3.5YAMLTTS
Bad Apple ESP32 Utilities
A clever suite of tools designed for retro-style ESP32 tech demos. Feed it a video and it slices the footage into frames, applies delta encoding and RLE compression, and outputs a bundled C array ready to be flashed directly onto an ESP32. While the original CodeMaker utilized a sequential Cython implementation, the Composite evolution features a modular, parallelized architecture running on Numba (CPU) and CuPy (CUDA GPU) resulting in exponentially faster encoding speeds, and adds native audio support.
- Modular architecture with CPU (Numba) and GPU (CuPy) acceleration
- Parallelized video encoding maintaining delta and RLE compression
- Included Composite ESP32 player with experimental audio
PythonNumbaCuPyESP32C/C++CUDA
LoRa L298N Tank Controller
LoRa‑L298N‑TankController is a hobbyist IoT platform for remotely piloting a tank‑style rover via LoRa radios. ESP‑based controllers drive an L298N H‑bridge while encrypted commands and telemetry flow through Redis streams and a modular microservice backend hosted in Docker‑containers on AWS. It’s ideal for experimenting with low‑bandwidth long‑range control, real‑time media relay and distributed telemetry.
C/C++PythonLoRaRedis StreamsWebSocketDockerAWS