Securinets Darkest Hour 2026 - Pwn Writeups
I will only post writeups for blooded challenges. I will release the others once someone bloods them.
View Post →About
salah@x0r
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- OS
- Salah Chafai (arch, btw)
- Role
- Security Researcher / Exploit Developer
- Focus
- PwnReverse EngineeringLow-Level
- Stack
- CPythonx86-64 ASMRustShaders
- Shell
- zsh
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I do stuff.
Visitors
55
unique visitors
17
countries
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Achievements
Co-founded REvenant
AI Research Platform
- Co-founded and led development of an AI-assisted exploit research platform using autonomous agents to orchestrate analysis tools, patchers, and debuggers — cutting malware deobfuscation time by 35%, manual research effort by 20%, and significantly speeding up CTF challenge solves.
CTF Achievements
Competitive Hacking
- Qualified for ASCW finals 2025.
- Qualified for Cyber Tech Olympics 2025.
- Qualified for blackhat MEA finals 2025.
- Qualified for CSAW 2025.
- Ranked top 3 in CSAW 2025 finals.
- Qualified for ASCW 2025.
- Ranked top 4 in BrunnerCTF (1,158 teams)
RegNet Web Server
Systems Programming
- Developed a lightweight, high-performance static web server from scratch in x86-64 assembly (NASM), with fully manual memory management, lock-free data structures, fast HTTP/1.1 parsing, and non-blocking concurrent connection handling via modern Linux kernel interfaces.
Latest Posts
View All Posts (10)Securinets Friendly 2025 - Pwn Writeups
This post contains quick writeups for all the binary exploitation (pwn) challenges from the Securinets Friendly 2025 CTF competition. The challenges a...
View Post →Pwn Beginner Tips & Tricks
Short, focused tips for absolute beginners: connect with netcat, automate with pwntools, abuse format strings, understand basic calling conventions (x...
View Post →Experience
Technical Instructor
@ Securinets
September 2024 - Present
- Authored original Pwn and Reverse Engineering CTF challenges, engaging 400+ participants per event.
- Delivered hands-on workshops on binary exploitation, training students from 10+ universities in practical pwn and RE techniques.
- Developed and maintained fully containerized, load‑resilient challenge infrastructure, delivering uninterrupted 100% uptime across all competition periods.
Web Security Engineer
@ MyDriveID
October 2025 - December 2025
- Built a secure web application for recruitment, implementing encrypted storage for applicant documents and robust OAuth-based authentication.
- Developed employer dashboards for reviewing applications, allocating tasks, and tracking work time, enhancing operational efficiency.
- Strengthened system security by enforcing access controls, secure API interactions, and end-to-end encryption, reducing risk of unauthorized data access.
CTF Player
@ FL1TZ
September 2024 - Present
- Consistently achieved top rankings in competitive CTFs at both national and international levels.
- Qualified for prestigious competitions including Arab Security Cyber Wargames, Blackhat, Cybersecurity Tech Olymics & CSAW
- Specialized in Pwn and Reverse Engineering categories across multiple CTF formats
ICT Engineering Student
@ INSAT
2023 - May 2027
- Pursuing National Engineering Diploma in Computer Networks and Telecommunications
- Specialized coursework in Operating Systems & Virtualization, Embedded & Real-Time Systems
- Focus on High-Speed Networks & Mobile Protocols & Cybersecurity
Lead Game Developer
@ Phantom Penguin
November 2020 - 2022
- Led a cross-functional team of 6 developers to deliver 5+ desktop and mobile game titles from concept to release.
- Coordinated task allocation and conducted structured code reviews, increasing team productivity by ~40%
- Stabilized release builds through systematic testing and pre-release triage, achieving 100% on-time deliveries