Hell-o World!

Don't jump to conclusions if you are not done with enumeration.

Hell-o World! I'm Grant Dale Hortelano, also known online as 0xblivion. I'm a student and cybersecurity enthusiast with a strong passion for ethical hacking, reverse engineering, and penetration testing.

I enjoy learning how systems work by breaking them down and figuring out how to exploit them. I spend most of my time working on CTF challenges, building custom tools, and exploring advanced topics like malware development, binary obfuscation, and Android app modification.

Right now, I'm focused on building my skills through hands-on projects. I create tools, writeups, and scripts that help me understand real-world security and hacking techniques.

When I'm not working on cybersecurity, I enjoy gaming, editing videos, listening to music, and customizing Linux environments. I believe in learning something new every day and challenging myself to grow, one step at a time.

Skills

Python

Used for scripting, automation, and exploit development

Burpsuite Pro

Utilized for testing web apps and finding vulnerabilities

Wireshark / TCPdump

Applied to analyze network traffic and inspect packets

Kali Linux

Primary Operating System for penetration testing and everyday security tasks

Active Directory

Knowledgeable in AD enumeration, exploitation, and persistence techniques.

IDA Pro

Used for reverse engineering and analyzing binary behavior

Certificates

P.O.O | HackTheBox Red Team Operator Level I

Gained practical experience from P.O.O., a focused Active Directory lab designed to test real-world skills in enumeration, lateral movement, and privilege escalation. Navigating its modern AD environment helped strengthen offensive techniques and persistence strategies through hands-on challenges.

Dante | HackTheBox Red Team Operator Level I

Completed Dante, a structured Pro Lab that introduced core penetration testing techniques in a modern Linux environment. Gained hands-on experience using industry-standard tools and workflows, helping build a solid foundation in offensive security operations.

Zephyr | HackTheBox Red Team Operator Level II

Completed Zephyr, an enterprise-grade lab focused on exploiting real-world Active Directory misconfigurations. Gained hands-on red team experience through challenges involving credential abuse, privilege escalation, and domain enumeration. Strengthened AD exploitation skills in a simulated corporate environment.

Offshore | HackTheBox Red Team Operator Level II

Completed Offshore, a dynamic Pro Lab offering a mix of real-world scenarios for both offensive and defensive security. Gained hands-on experience across a broad range of techniques, strengthening skills relevant to professional red team operations and internal security assessments.

HackThebox Student Transcript

A record of completed HTB Academy modules, covering topics such as network security, web exploitation, Active Directory, privilege escalation, and penetration testing fundamentals

Projects

Gem

An IDA Pro plugin that leverages Google's Gemini AI to automatically suggest meaningful names for functions and labels based on their code context.

NTP Timeroast Attack Tool

Extract and crack domain controller machine account password hashes via NTP MS-SNTP authentication.