---
title: "Discussion on \"From Developer to Attacker: Automatic Authentication Bypasses with python\" | Hashnode"
description: "Discussion on \"From Developer to Attacker: Automatic Authentication Bypasses with python\". Introduction\nAuthentication is the front door of any web application, yet it remains one of the most frequently misconfigured components. Drawing from my experience developing backend systems in Djang"
url: "https://hashnode.com/posts/from-developer-to-attacker-automatic-authentication-bypasses-with-python/6af0feb9c312080bf865ab39"
---

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

Discussion

# [From Developer to Attacker: Automatic Authentication Bypasses with python](https://ctfcap.hashnode.dev/from-developer-to-attacker-automatic-authentication-bypasses-with-python?utm_source=hashnode&utm_medium=feed)

Introduction Authentication is the front door of any web application, yet it remains one of the most frequently misconfigured components. Drawing from my experience developing backend systems in Djang

3d ago · 8 min read · ctfcap.hashnode.dev  
Read the article

-   [#cybersecurity](https://hashnode.com/tag/cybersecurity)
-   [#redteaming](https://hashnode.com/tag/redteaming)
-   [#pentesting](https://hashnode.com/tag/pentesting)
-   [#authentication](https://hashnode.com/tag/authentication)
-   [#web-development](https://hashnode.com/tag/web-development)

## Written by

[Rodrigo Martinez Nuñez](https://hashnode.com/@rsh21)

@rsh21

  
[View profile](https://hashnode.com/@rsh21)

Cyber security

Computer Science student passionate about cybersecurity, with a strong interest in Red Team operations and SOC operations. I share learnings, projects, and experiments as I progress on my path toward becoming an offensive security specialist.

## Responses 1

Markdown supported · ⌘↵ to post

[Damiano Bianda](https://hashnode.com/@damianobianda)

[2d ago](https://hashnode.com/posts/from-developer-to-attacker-automatic-authentication-bypasses-with-python/6af0feb9c312080bf865ab39/comment/6af1999dbcff827a3c7abae6)

The most valuable part of your framing is the developer origin - because the bypasses that automation actually finds are almost always the ones the framework made easy to leave in. Forced browsing to /admin or an unprotected API route, JWTs accepted with alg=none or a weak symmetric secret, OTP endpoints without rate limiting, password reset tokens that are sequential or never expire: none of these need creativity, they need a checklist and a loop, which is exactly why the attacker's Python script exists. The inversion I'd offer to developers reading this: the same script is a regression test. Every bypass class you automate from the red side can run in CI from the blue side - spin up the app, run the forced-browsing wordlist, try alg=none against your own JWT endpoint, hammer the OTP route and count the responses. If your pipeline tolerates it, so will the internet. And the second-order point: authentication bypasses are loud in logs only if someone logs the failures - 401s on /admin, JWT signature rejections, OTP attempt counts. Most breaches of this kind were visible for weeks; nobody was reading the counter.