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pentest-ctf-crypto

Identify cryptographic weaknesses and execute attacks across CTF challenges.

299|56|Updated Jan 13, 2026
Search Tags:#cryptography#ctf#rsa#hash-analysis#cipher-detection#security-tools
One-click install
npx skills add https://github.com/jd-opensource/JoySafeter --skill pentest-ctf-crypto
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: pentest-ctf-crypto
Source: https://github.com/jd-opensource/JoySafeter/tree/main/skills/pentest-ctf-crypto
Command: npx skills add https://github.com/jd-opensource/JoySafeter --skill pentest-ctf-crypto

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This skill provides a structured framework to analyze and defeat cryptographic challenges commonly found in CTFs, RSA weaknesses, and hash-based puzzles, helping practitioners quickly identify weaknesses and craft effective exploits.

Core Features & Use Cases

  • Identify cipher types (Base64, Caesar, RSA, etc.) and map them to targeted attacks.
  • Apply classical cipher cracking, RSA factorization and related attacks, and hash extension or collision techniques.
  • Use workflows to reproduce and document results for security assessments or CTF practice.

Quick Start

Analyze a provided crypto challenge by identifying the cipher, selecting appropriate attacks, and applying hash analyses to recover the flag.

Frequently Asked Questions about pentest-ctf-crypto

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I identify cipher types and crack cryptography challenges in a CTF?▼

This skill identifies cipher types and cracks cryptography challenges by automating cipher detection across Base64, Caesar, and RSA, mapping them to targeted attacks like classical cracking and hash extensions to recover flags.

What is the best way to assess RSA vulnerabilities in security assessments?▼

Assessing RSA vulnerabilities involves using structured workflows that apply RSA factorization and related attacks, quickly identifying cryptographic weaknesses and crafting effective exploits for security assessments.

How do I perform hash analysis and execute hash extension attacks?▼

To perform hash analysis and execute hash extension attacks, utilize automated toolsets that orchestrate detection and attack execution, applying collision techniques to solve hash-based puzzles and document results.

Can I use automated security tools to detect and exploit classical ciphers?▼

Yes, automated security tools can detect and exploit classical ciphers. This skill provides a framework to identify cipher types and apply classical cracking techniques within reproducible workflows.

Do I need prior cryptographic knowledge to reproduce CTF attack workflows?▼

Minimal prerequisite setup is needed to reproduce CTF attack workflows. The skill provides clear guidance, orchestrating detection, attack execution, and result reporting for practitioners analyzing cryptographic weaknesses.

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