---
title: "Discussion on \"BrunnerCTF : Git Gud Writeup (2026)\" | Hashnode"
description: "Discussion on \"BrunnerCTF : Git Gud Writeup (2026)\". Exploit an attacker-controlled .git/config through core.fsmonitor to achieve server-side RCE and leak the flag via Git status output."
url: "https://hashnode.com/posts/brunnerctf-git-gud-writeup-2026/6a8b1219fb8f3d1521b65327"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [BrunnerCTF : Git Gud Writeup (2026)](https://exploitnotes.hashnode.dev/brunnerctf-git-gud-writeup-2026?utm_source=hashnode&utm_medium=feed)

Exploit an attacker-controlled .git/config through core.fsmonitor to achieve server-side RCE and leak the flag via Git status output.

Aug 23 · 4 min read · exploitnotes.hashnode.dev  
Read the article

-   [#brunnerctf](https://hashnode.com/tag/brunnerctf)
-   [#git](https://hashnode.com/tag/git)
-   [#git-config](https://hashnode.com/tag/git-config)
-   [#fsmonitor](https://hashnode.com/tag/fsmonitor)
-   [#rce](https://hashnode.com/tag/rce)
-   [#command-injection](https://hashnode.com/tag/command-injection)
-   [#flask](https://hashnode.com/tag/flask)
-   [#web](https://hashnode.com/tag/web)
-   [#ctf](https://hashnode.com/tag/ctf)
-   [#ctf-writeup](https://hashnode.com/tag/ctf-writeup)
-   [#brunnerctf-writeup](https://hashnode.com/tag/brunnerctf-writeup)

## Written by

[Yogeshwar Peela](https://hashnode.com/@exploitnotes)

@exploitnotes · Vishakapatnam, India

  
[View profile](https://hashnode.com/@exploitnotes)

I write detailed writeups on HackTheBox, PicoCTF and other CTF challenges. Passionate about web exploitation, Active Directory attacks and ethical hacking

## Responses

Markdown supported · ⌘↵ to post

No responses yet.