Volodimir Sirenko

Mobile Security Researcher & Android Penetration Tester from Ukraine 📱🔍

I specialize in ethical hacking and security auditing of Android mobile applications — all testing is performed directly on my Android device using the powerful ANDRAX toolkit.

My core skills and services:

• Android APK reverse engineering & patching: decompile, analyze and edit APKs with APKEditor, static analysis using JADX and MobSF

• Discovery of hardcoded secrets: API keys, tokens, Firebase/AWS credentials, insecure data storage, logs leaks

• Backend/API vulnerability testing from mobile apps: sqlmap for SQL injection (union, error-based, blind, time-based), Nuclei for automated vulnerability scanning with custom workflows (IDOR, misconfigurations, XSS, open redirects)

• Dynamic analysis: runtime instrumentation with Frida (bypassing root detection, SSL pinning), deep links testing, proxying mobile traffic

• Full compliance checks against OWASP Mobile Top 10

Why work with me:

• Fully mobile-optimized workflow — fast audits without needing a laptop

• Clear, professional reports: detailed step-by-step reproduction, PoC screenshots from ANDRAX, severity rating (CVSS), business impact explanation, remediation recommendations

• Strict adherence to ethics and scope rules — responsible disclosure only

• Highly motivated self-taught specialist, constantly practicing on TryHackMe, HackTheBox, PortSwigger Academy

Available for:

• One-time Android app security audits ($50–400 depending on scope and depth)

• Quick vulnerability scans: APK reverse + sqlmap/Nuclei on exposed APIs

• Mobile-focused bug bounty support and pre-release checks

I'm a beginner in paid freelance but tool-proficient, detail-oriented, and committed to delivering real value. Fast response time, available via Upwork chat or Telegram.

Let's secure your Android application before attackers do! 🛡️📱

Location:Ukraine | Timezone: EET (UTC+2/+3)  

Languages: English (Intermediate – technical reading/writing), Ukrainian & Russian (Native)