---
title: "#substitution-cipher articles | Hashnode"
description: "Explore 2 articles tagged #substitution-cipher on Hashnode. Tutorials, guides, and how-tos from the community."
url: "https://hashnode.com/tag/substitution-cipher"
---

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# #substitution-cipher

2 posts · 0 followers

[Yogeshwar Peela](https://hashnode.com/@exploitnotes) · [Jul 12](https://hashnode.com/posts/broncoctf-atomic-substitution-theory-writeup/6a53c6ffaaf19aab7fab90d5)

### [BroncoCTF : Atomic Substitution Theory Writeup](https://exploitnotes.hashnode.dev/broncoctf-atomic-substitution-theory-writeup?utm_source=hashnode&utm_medium=feed)

Solve Atomic Substitution Theory using periodic table coordinates, decode tuple symbols into text, and reconstruct the hidden BroncoCTF flag.

7 min read · [exploitnotes.hashnode.dev](https://exploitnotes.hashnode.dev/broncoctf-atomic-substitution-theory-writeup?utm_source=hashnode&utm_medium=feed)

[1](https://hashnode.com/posts/broncoctf-atomic-substitution-theory-writeup/6a53c6ffaaf19aab7fab90d5)

[Null Siryn](https://hashnode.com/@nullsiryn) · [Feb 8](https://hashnode.com/posts/solving-lactf-lazy-bigrams-phonetic-bigram-substitution-challenge/6988d63fba2be4f77422bc2b)

### [Solving LACTF Lazy Bigrams: Phonetic Bigram Substitution Challenge](https://ctfs.hashnode.dev/solving-lactf-lazy-bigrams-phonetic-bigram-substitution-challenge?utm_source=hashnode&utm_medium=feed)

Learn how to solve the LACTF Bigram Substitution challenge. This walkthrough covers phonetic mapping vulnerabilities and a Python script to recover the flag

3 min read · [ctfs.hashnode.dev](https://ctfs.hashnode.dev/solving-lactf-lazy-bigrams-phonetic-bigram-substitution-challenge?utm_source=hashnode&utm_medium=feed)