symmetric-cipher-attacks

Provides hands-on techniques for exploiting cryptographic weaknesses in systems and applications.

120|8|Updated Jun 2, 2026
One-click install
npx skills add https://github.com/Prohao42/aimy-skill --skill symmetric-cipher-attacks-prohao42
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: symmetric-cipher-attacks
Source: https://github.com/Prohao42/aimy-skill/tree/main/ai-mian/hack-skills/skills/symmetric-cipher-attacks
Command: npx skills add https://github.com/Prohao42/aimy-skill --skill symmetric-cipher-attacks-prohao42

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires pycryptodome, pypdf2, requests, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides expert-level techniques for attacking symmetric encryption, helping users exploit weaknesses in block and stream ciphers for cryptanalysis and penetration testing.

Core Features & Use Cases

  • Block Cipher Attacks: Exploits weaknesses in CBC, ECB, and other block cipher modes.
  • Stream Cipher Attacks: Identifies and exploits vulnerabilities in stream ciphers like XOR and LFSR.
  • Key Recovery: Recovers encryption keys from known plaintexts, ciphertexts, and other conditions.
  • Use Case: A penetration tester uses this Skill to identify and exploit vulnerabilities in a web application's encryption mechanisms.

Quick Start

Load the symmetric-cipher-attacks skill to perform a CBC padding oracle attack on the provided ciphertext.

Frequently Asked Questions about symmetric-cipher-attacks

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

FAQPage Schema
How do I perform a CBC padding oracle attack on ciphertext?

You can exploit ECB block cipher weaknesses during penetration testing by loading this skill to identify deterministic encryption patterns. It provides expert attack techniques for block cipher modes like CBC and ECB.

Can I recover an encryption key from known plaintext and ciphertext?

Yes, you can recover encryption keys from known plaintexts and ciphertexts using this skill. It focuses on exploiting symmetric cipher vulnerabilities and key recovery techniques for cryptanalysis.

How do stream cipher attacks work on LFSR and XOR encryption?

Stream cipher attacks work by identifying and exploiting vulnerabilities in XOR and LFSR stream ciphers. This skill provides techniques to attack stream ciphers and recover plaintexts during penetration testing.

Does this symmetric cipher attack tool require pycryptodome?

Yes, this symmetric cipher attack tool requires pycryptodome, pypdf2, and requests dependencies. You need knowledge of cryptographic principles and practical exploitation techniques to use it effectively.

What is the best way to exploit block cipher weaknesses in web applications?

The best way to exploit block cipher weaknesses in web applications is using this skill to attack symmetric encryption mechanisms. It helps penetration testers identify and exploit vulnerabilities in CBC, ECB, and other modes.