Lime27 S.

Key Skills

Freelancer Overview

MUHAMMED ALI Junior Penetration Tester | Offensive Security Researcher Egypt (Remote — Available Immediately) github.com/Lime27-Star hackthebox.com/profile PROFESSIONAL SUMMARY Offensive security professional with hands-on penetration testing experience across web applications, Linux systems, and Active Directory environments. Proficient in the full attack lifecycle — reconnaissance, enumeration, exploitation, privilege escalation, and lateral movement — with practical exposure on real client engagements. Active vulnerability researcher on HackerOne, Intigriti, and Bugcrowd, targeting complex vulnerability classes across public and private programs. Develops custom security tooling in Python to automate vulnerability detection and accelerate bug bounty workflows. Ranked in the global top 1,000 on Hack The Box (Level 17), with documented experience on Very Hard machines involving advanced Active Directory attack paths. WORK EXPERIENCE Junior Penetration Tester — CySharks Jul 2025 – Jan 2026 Remote Conducted web application penetration tests covering OWASP Top 10 vulnerabilities including SQL Injection, XSS, SSRF, IDOR, and authentication bypass across client targets. Performed full-scope reconnaissance and enumeration using subfinder, httpx, ffuf, and Nmap; mapped attack surfaces and identified high-value entry points. Executed privilege escalation assessments on Linux systems, identifying SUID/SGID misconfigurations, vulnerable binaries, cron-based weaknesses, and kernel CV