About Me#
Hi! I’m Felix Billières, and I do CTFs and research under the pseudonym Elliot Belt.
My Journey#
I did one year of SOC N1/N2, then one year of pentest, and I’m currently a Purple Teamer in internship. My role involves identifying vulnerabilities while improving system security measures.
My Passions#
Active Directory#
Passionate about Active Directory and its complex mechanisms. I do a lot of HTB boxes, create offensive tools, collaborate on open-source projects, and develop cool Active Directory tools.
Web Pentesting / Bug Bounty#
In the Phreaks 2600 team, I mainly focus on web security, lead web workshops for players, and do bug bounty on YesWeHack, Yogosha, and HackerOne.
Creating Offensive and Defensive Tools#
I create tools mainly related to Active Directory, as well as tools that help with purple teaming (not yet public). I had the opportunity to present my biggest project - a tool called AuditMapper - at a conference: WineRump in Bordeaux.
CTF (Capture The Flag)#
I actively participate in CTFs with the Phreaks 2600 team. These competitions allow me to develop my skills in a fun and collaborative way. You can follow my progress on Root-Me.
Purple Teaming#
My internship as a Purple Teamer allows me to:
- Conduct penetration tests
- Analyze attacker tactics
- Improve organizational defenses
- Collaborate with red and blue teams
My Skills#
- Active Directory & Windows environments
- Web pentesting / Bug bounty
- Red Teaming / Purple Teaming
- CTF and security challenges
- Developing offensive and defensive tools
- Python, PowerShell
- Linux / Windows administration
Why This Site?#
This site is my space to:
- Share my CTF writeups
- Document my technical discoveries
- Share my thoughts on cybersecurity
- Connect with the community
Feel free to contact me if you have questions or want to collaborate!
Note: Information security is a constantly evolving field. This site reflects my personal learning and experiences.



