Hey there! I'm Sergio, a 23-year-old cybersecurity enthusiast. I’ve always been passionate about technology, so much so that three years ago I decided to make it my career. I started by earning an associate’s degree in Multiplatform Application Development (MAD), where I developed multiple desktop applications using Java and mobile apps with Kotlin
After that, I specialized in pentesting as I found it the most fulfilling area of cybersecurity. Moreover, I also run a personal blog where I publish write-ups and technical articles about PortSwigger labs and HackTheBox machines. So far, I have published over 290 articles while maintaining a regular posting schedule. I am doing this while preparing for my OSCP and BSCP certifications
Throughout my journey in this field, I’ve encountered tasks that I found tedious or repetitive. To solve this, I've developed some tools using Bash and Python to automate these processes, allowing me to focus on what truly matters
When it comes to languages, I believe English is a fundamental skill in this field. That’s why I earned my Cambridge B2 certificate this year, and I plan to prepare for the C1 next year
- 🔭 Currently sharpening my pentesting skills
- 💪 I spend my free time at the gym and playing video games
- 💼 Open to job opportunities
- 📫 Find my resume, blog, and socials on Linktree
- ⚡ I love learning and always seek new challenges
Currently preparing for
- OSCP (Offensive Security Certified Professional)
- BSCP (Burp Suite Certified Practitioner)
- Multiplatform Application Development (MAD)
- Spanish – Native
- English – Cambridge B2 First
Here are some of my key projects
- Justice-Reaper.github.io – My personal blog with PortSwigger & HackTheBox write-ups
- AutoBspwmKali – Script to auto-install & configure BSPWM on Kali Linux
- rpcEnum – Tool for Active Directory enumeration via RPC
- TFG-DAM – Final project for my associate’s degree in Multiplatform Application Development (MAD)
- graphQLConverter – Converts GraphQL JSON to URL-encoded format
- httpProxyPortScanner – Port scanner using HTTP proxies
- payloadSplitter – Splits large files into smaller chunks with customizable sizes
- getTopPorts – Extracts the most common ports from Nmap
- wallapopMessagesDownloader – Downloads and saves Wallapop inbox messages using the Wallapop API