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pentest-ctf-crypto

This Claude Code skill provides cryptographic attack techniques for penetration testing and Capture The Flag competitions, including cipher identification and cracking, RSA vulnerability exploitation, hash analysis, and mathematical cryptography problem-solving. Use it when analyzing weak or broken cryptographic implementations, solving CTF crypto challenges, or identifying vulnerabilities in encryption systems during security assessments.

Ver fuente Repositorio: JoySafeter

Instalar en Claude Code

Copiar

git clone --depth 1 https://github.com/jd-opensource/JoySafeter /tmp/pentest-ctf-crypto && cp -r /tmp/pentest-ctf-crypto/skills/pentest-ctf-crypto ~/.claude/skills/pentest-ctf-crypto

Después abre una sesión nueva de Claude Code; el skill carga automáticamente.

Definición

SKILL.md

# Pentest CTF Crypto

## Purpose
Analyze and break cryptographic implementations, including classical ciphers, RSA weak keys, and hash extensions.

## Core Workflow
1. **Cipher Identification**: Identify the type of encryption or encoding used (e.g., Base64, Caesar, RSA).
2. **Classical Cracking**: Brute-force or analyze frequency for classical ciphers using `ciphey` or online tools.
3. **RSA Attacks**: Check for common RSA weaknesses (small e, small factors) using `RsaCtfTool`.
4. **Hash Analysis**: Identify hash types and attempt cracking or length extension attacks using `hashcat` or `hashpump`.
5. **Math/Primes**: Solve mathematical problems related to cryptography using `sagemath`.

## References
- `references/tools.md`
- `references/workflows.md`

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