# hopalong (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover hopalong. Page: Feed: --- ## [Hopalongs Revisited](https://hkopp.github.io/2026/08/hopalongs-revisited) _2026-08-14 · koppian adventures_ As you may know from my last post my programming journey started with special fractals called hopalongs. I thought it would nice to revisit this once again using AI. Since around spring 2026 I stopped writing code by hand and mostly used AI agents for that task. For this post, I implemented hopalongs in Javascript, so I can embed them on this website. Drag the sliders and enjoy. a b c n (points) ## [Thoughts On Fiesta](https://hkopp.github.io/2026/07/thoughts-on-fiesta) _2026-07-08 · koppian adventures_ This post is a book review of Fiesta by Hemingway. Again, as with my previous book review, this is not a summary but rather some thoughts and highlights. If you are interested in the book, go buy the book. Writing Style Hemingway is widely known for his short and concise writing style. As someone who has written some academic papers and is still writing technical documentation, i have to agree.… ## [Thoughts On The Konmari Cleaning Method](https://hkopp.github.io/2026/01/thoughts-on-the-konmari-cleaning-method) _2026-01-13 · koppian adventures_ Introduction I am probably a minimalist without ever wanting to be one. I prefer to own few things of high quality instead of multiple items of low or mediocre quality. But I have never purposefully engaged with keeping order and was never interested in cleaning or decluttering. My parents always had trouble in convincing me to clean my room. But i looked into related topics to decluttering such… ## [The Modprobe Path Technique](https://hkopp.github.io/2025/12/the-modprobe-path-technique) _2025-12-10 · koppian adventures_ In this post, I want to explore another technique to exploit a buffer overflow in the Linux kernel. In a previous post i used the functions commit\_creds(prepare\_kernel\_creds(0)) to elevate privileges to root. In this post, I want to demonstrate another way that involves overwriting the symbol modprobe\_path in the kernel. This was swiftly mentioned in my previous post in a section called KPTI… ## [Thoughts On The Astronauts](https://hkopp.github.io/2025/11/thoughts-on-the-astronauts) _2025-11-09 · koppian adventures_ After my last book review, I decided to do another one. This is about The Astronauts by Stanislaw Lem. Again, this is not a summary, but my personal opinion. Nevertheless, it may contain spoilers, so go read the book. The book was written in 1951 and the main part of the book is set in 2000. It carries that typical Soviet optimism for the future. For me this is always associated with a nostalgia… ## [Thoughts On Prometheus Rising](https://hkopp.github.io/2025/06/thoughts-on-prometheus-rising) _2025-06-01 · koppian adventures_ Usually, I do not post book reviews, but recently I read Prometheus Rising by R.A. Wilson and feel that i need to write down some thoughts on it, so I do not have to read the book again in the future, but can still refer to the ideas. This is not a summary of Prometheus Rising, but rather a retelling and an interpretation by me. If you are interested in the book, go buy the book. First of all,… ## [An Ld\_preload Toy Rootkit](https://hkopp.github.io/2025/04/an-ld_preload-toy-rootkit) _2025-04-13 · koppian adventures_ If you are not interested in malware development for Linux and have not read some of my previous blog posts, this blog post may be too technical for you. You could rather start here In this blog post, I want to present a toy LD\_PRELOAD rootkit. It works by hijacking the dynamic linker and thus hiding itself from the system. Later, we will talk about how to detect it. Preliminaries Usually, when an… ## [Introduction To Linux Kernel Exploitation](https://hkopp.github.io/2024/12/introduction-to-linux-kernel-exploitation) _2024-12-17 · koppian adventures_ Prelude This blog post documents my forays into Linux kernel exploitation. The basis for this introduction is a challenge from the hxp2020 CTF called kernel-rop . If you want to follow along, you can either download it from the CTF page or from a local mirror . There are already a lot of solutions to this challenge on the internet. If you came to my blog by looking for such a solution, you may be… ## [Security Research Lacks Scientific Significance](https://hkopp.github.io/2024/11/security-research-lacks-scientific-significance) _2024-11-02 · koppian adventures_ My background When i left academia after pursuing my PhD and got into penetration testing, i was irked by how people used the word “security research”, but I could not quite put my finger onto it. For me, research was an activity that increased the knowledge of humanity. As an example the theorems of Pythagoras or Thales of Milet still hold and are still relevant for today. The same holds true for…