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Dvdknaap/README.md

Danny van der Knaap — Senior Software Engineer & Pentester

Experience Role Focus Location Cert Cert

I execute end-to-end penetration testing across Web, API, and AD/Enterprise surfaces, with targeted coverage of cloud attack paths and DevSecOps pipelines. Delivery is mapped to OWASP (ASVS/WSTG/MSTG), PTES, NIST 800-115, and MITRE ATT&CK for defensible findings, measurable risk reduction, and rapid developer remediation. Toolchain spans Burp Suite Pro, Nmap/Masscan, ffuf/feroxbuster, sqlmap, nuclei, gobuster, jwt-tool, and AD tradecraft (BloodHound/SharpHound, Impacket, CrackMapExec, Rubeus, Kerberoasting/AS-REP, ADCS abuse).


Impact Highlights

  • Password/Hash Opsgitea-crack-passwords: PBKDF2-SHA256 dictionary cracking at scale.
  • Recon/Deobfuscationdownload_js_map_files: automated .js.map discovery & extraction.
  • Payload Engineeringsqlmap-temper-scripts: evasive SQLi tamper pipelines (WAF-aware).
  • Binary/Algo ExplorationXOR-key-bruteforce: brute-force XOR key/message search.
  • CTF Workflowadd-creds-rofi: high-velocity credential ops for engagements.
  • AppSec R&Djava-STTI (Spring SSTI file exfil) and eos (Enemies Of Symfony tooling).
  • Legacy OpsDirectadminAudit: pragmatic operational automation.

Explore the repos for full delivery details.


Core Tech Footprint

Python · JavaScript/Node.js · PHP/Symfony · Shell/Bash · C++ · SCSS/CSS · Solidity · Perl


Pentest Coverage Map

  • Web & API Pentesting: AuthN/AuthZ bypass, IDOR, SSRF, deserialization, template injection, GraphQL abuse, JWT/crypto flaws, rate-limit evasion.
  • AD/Enterprise: Enumeration → lateral movement → privilege escalation; Kerberos attacks, constrained/unconstrained delegation, ADCS, ACL abuse.
  • Cloud & CI/CD: IAM misconfig, metadata pivots, secret sprawl, artifact poisoning, supply-chain hardening.
  • Detection & Reporting: ATT&CK mapping, reproducible PoCs, prioritized remediation with developer-ready guidance.

Certifications & Community

  • Hack The Box: CPTS (Certified Penetration Testing Specialist) · CBBH (Certified Bug Bounty Hunter)
  • Profiles

    TryHackMe Profile Badge

    Hack The Box Profile Badge


Operating Dashboards (auto-updating)

Top Languages

GitHub Streak

Contribution Graph


Pinned Deliverables


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