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davidocuevas/README.md

🤠 David (Obed) Cuevas 🤠

Sr Penetration Tester · He/Him
Mobile · Internal / Active Directory · AWS Red Team

LinkedIn


What I do

I break things for a living, finding the bugs before someone with worse intentions does. In offensive security since 2021, day-to-day work spanning mobile applications, internal Active Directory environments, and cloud red-team operations. I prefer scrappy, on-the-box tooling over uploading binaries, and write a lot of my own helpers when something doesn't exist yet.

Areas of focus

Mobile Application Penetration Testing (iOS & Android)

  • Static analysis of .ipa and .apk binaries — decompilation, secret hunting, third-party SDK inventory, dependency / manifest review
  • Runtime analysis on jailbroken iOS and rooted Android — Frida instrumentation, method hooking, traffic interception, certificate-pinning bypasses, keychain / keystore extraction
  • Aligned with OWASP MASVS / MASTG

Internal / Active Directory blackbox

  • Domain enumeration over low-priv VPN sessions
  • ADCS misconfiguration hunting (ESC1–ESC8) and exploitation PoCs
  • Coercion + relay chains, RBCD abuse, Kerberoasting, gMSA password retrieval
  • Constrained Language Mode bypasses
  • PowerShell-only tooling for environments with no internet or binary drops

Cloud red team (AWS)

  • AWS-focused offensive ops via the HackTricks AWS Red Team Apprentice methodology

Certifications

Offensive security

  • HackTricks AWS Red Team Apprentice (ARTA) — 2025
  • Zero-Point Security Red Team Operator (RTO) — 2025
  • OffSec OSCP — 2024
  • INE Mobile Application Penetration Tester (eMAPT) — 2024
  • INE eJPT — 2024

Cloud / governance

  • ISC2 CCSP — 2023
  • ISC2 SSCP — 2023

CompTIA

  • PenTest+ · CySA+ · Security+ · Network+ · A+ · Project+
  • Stackables: CSAP (Security Analytics Professional), CSIS (Secure Infrastructure Specialist), CIOS (IT Operations Specialist)

Other

  • ITIL Foundation
  • Baltimore Cyber Range graduate

Education

Master's graduate — Western Governors University


Mobile · Active Directory · AWS · Offensive Security · Reverse Engineering

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