Zeratool - Automatic Exploit Generation (AEG) and remote flag

项目说明

Zeratool v2.2

Automatic Exploit Generation (AEG) and remote flag capture for exploitable CTF problems

This tool uses angr to concolically analyze binaries by hooking printf and looking for unconstrained paths. These program states are then weaponized for remote code execution through pwntools and a series of script tricks. Finally the payload is tested locally then submitted to a remote CTF server to recover the flag.

![asciicast]()

2.2 changes

Zeratool now supports remote libc leaking with buffer o. When a puts or printf call is present, Zeratool will leak out remote GOT entries and submit them to an online libc searching database to find offsets without the need for a local copy of the library.

See remote libc leak in action!

Zeratool supports some basic ret2dlresol for 64bit binaries. See the example below on how to run it.

2.1 changes

Zeratool now supports some smart rop chain generation. During a buffer o
Zeratool will attempt to leak a libc address and compute the base address and build a execve(/bin/sh,NULL,NULL) chain or system(/bin/sh) chain.

Installing

Zeratool has been tested on Ubuntu 16.04 through 20.04. Please install radare2 first

pip install zeratool

Usage

Zeratool is a python script which accept a binary as an argument and optionally a linked libc library, and a CTF Ser information

Exploit Types

Zeratool is designed around weaponizing buffer o and format string and currently supports a couple types:

* Buffer O
* Point program counter to win function
* Point program counter to shellcode
* Point program counter to rop chain
* Rop chains will attempt to leak a libc function
* Rop chains will then execve(/bin/sh) or system(/bin/sh)
* Can attempt a ret2dlresol
* Can attempt to use puts/printf to leak remote libc
* Format String
* Point GOT entry to win function
* Point GOT entry to shellcode

Examples

Checkout the samples.sh file. The file contains several examples of Zeratool automatically solving exploitable CTF problems.

Long Asciinema with Three Solves

Run the tests!

Tox and Pytest are used to that Zeratool is working correctly.

FAQ

Q. Why doesn't Zeratool work against my simple exploitable?

A. Zeratool is held together by scotch tape and dreams.

项目信息

开发语言：Python

Star 数：1144

技术要点

该项目属于CTF思路方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕Automatic Exploit Generation (AEG) and remote flag capture for exploitable CTF problems展开，提供了可运行的实现，对理解相关安全机制、工具原理与攻防技术具有较高的研究价值。

从技术实现角度看，此类项目的核心在于对底层原理的深入理解与工程化落地。开发者在研究过程中可以结合官方文档与社区讨论，梳理项目的初始化流程、核心模块职责与数据流转，逐步掌握其中的技术细节与设计思路。

使用与学习建议

1. 下载源码压缩包，解压到本地环境。

2. 根据项目类型准备对应的运行环境与依赖。

3. 按照 README 中的步骤完成配置与部署。

4. 在隔离的测试环境中运行验证，避免影响生产系统。

免责声明

本资源来源于开源社区，仅供安全研究、技术学习与合法授权范围内的攻防演练使用，请勿用于任何非法或侵害他人权益的用途。使用本项目产生的一切后果由使用者自行承担。