ctf - Niklas Heringer

digital-forensics

Digital Forensics for Beginners: How to Image a Disk, Carve Deleted Files, and Document Everything Like a Pro

Learn how to image a disk with dd, recover deleted files with Foremost and Scalpel, and document your entire investigation with forensic-log-tracker. A step-by-step beginner guide.

06 Apr

ctf

Securing Silver: My 2nd Place Win at CYBERSECURITY CONFERENCE 2025 CTF in Mannheim

My first comprehensive CTF experience at the CYBERSECURITY CONFERENCE 2025 in Mannheim, where my colleague and I secured 2nd place! We dive into the learning, the race, and essential tips on how to truly prepare (and thrive) in a 24-hour CTF challenge.

14 Nov

exam-prep

Uni Exam Practice VM practice: more of LFI2RCE

In this university exam practice VM, I explored file upload handling, discovered a separate file inclusion point, and chained it with an uploaded webshell to gain remote command execution.

15 Jul

exam-prep

Test Exam: Penetration Testing Playbook 01

My personal playbook for my penetration testing test exam, covering all key steps from access via port forwarding to grabbing ALL 8 flags.

03 Jul

ad-challenge

The Final Part: Active Directory Journay Day Five: Building, Securing, and Managing a Domain

Day Five covers key AD admin tasks - user and group creation, GPO management, and domain joins; using PowerShell with a security-focused approach.

21 Jun

privilege-escalation

How to Proceed after the User Flag: My Beginner’s Priv Esc Flow

Getting user.txt is just the beginning. Here’s how I hunt for privilege escalation paths on Linux boxes; what I check, how I think, and why it still stumps me sometimes.

13 May

htb

My UnderPass Runthrough - Learnings

Cracked the UnderPass HTB box by skipping dead ends, abusing SNMP leaks, and turning mosh-server into a root shell with zero password; here is how.

10 May