Certifa

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Offensive Security Student  /  NL

Break systems. Document truth.

I break Active Directory, Linux, and web targets on HackTheBox, then write down exactly how. Looking for my first red-team seat.

Certifa  /  DarkZero  ·  HTB  ·  Hard

Why know a little when you can know it all.

The Lab

Windows Server 2022 + two workstations

Every chain I read about gets rebuilt at home, outside the platform. Kerberos abuse, BloodHound paths, NTLM relay.

The Targets

Active Directory, Linux, web

HackTheBox machines, taken apart and written up in full. 9 on the record so far.

The Study

Cybersecurity & Cloud BSc

Hogeschool Utrecht. In progress, alongside everything else here.

The Goal

First red-team seat

Internships, CTF teams, or feedback on a writeup. [email protected]

nmapfullscan.pypython
# open ports come from the grepable "Ports:" line.# regex on free text kept missing them.entries = [e.strip() for e in ports_field.split(",")]for e in entries:    parts = e.split("/")    if len(parts) >= 3:        port_s, state, proto = parts[0], parts[1], parts[2]        if proto == "tcp" and state == "open" and port_s.isdigit():            open_ports.append(port_s) open_ports = sorted(set(open_ports), key=lambda x: int(x))
HackTheBoxMaster · lvl 75

Master

0points

1902 / 2826 XP to level 76

0

Machines

0

Challenges

0

Global rank

The Paper · CJCA earned

CJCA

Earned 10 Sep 2026 · HackTheBox

CPTS

In progress · HackTheBox

CCNA

Planned · Cisco

One down, two to go. This is the order they land in.

The Record · 9 machines

01Hard

DarkZero

Full Active Directory compromise, replayed step by step. Real commands, real output, the whole foothold chain including what failed first.

Active Directory · HTB · Hard

02Hard

Pirate

Pre-Windows 2000 accounts leak a gMSA hash over Kerberos for WinRM on the DC. NTLM coercion relayed to unsigned LDAP sets up RBCD, then an SPN moved onto the DC reaches Domain Admin.

windows · active-directory · rbcd

03Easy

Kobold

A wildcard TLS certificate leaks a subdomain running MCPJam Inspector, whose connect endpoint executes commands with no authentication. Privesc via docker group membership.

linux · web · subdomain-enum

04Easy

CCTV

Default credentials on an exposed ZoneMinder console lead to blind SQL injection (CVE-2024-51482). Root via a loopback-bound motionEye reached over an SSH tunnel (CVE-2025-60787).

linux · web · zoneminder

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