cookiemonster - 🍪 CookieMonster helps you detect and abuse vulnera

项目说明

:cookie: CookieMonster

CookieMonster is a command-line tool and API for decoding and modifying session cookies from several different frameworks. It is designed to run in automation pipelines which must be able to efficiently process a large amount of these cookies to quickly disco. Additionally, CookieMonster is extensible and can easily support new cookie formats.

It's worth emphasizing that CookieMonster finds in users of frameworks, usually not in the frameworks themselves. These users can resol found by configuring the framework to use a strong secret key.

Features

* Decodes and unsigns session cookies from Laravel, Django, Flask, Rack, and Express, and also handles raw JWTs.
* Rapidly e cookies; ignores invalid and unsupported cookies, and quickly tests those that it can.
* Takes full ad of Go's fast, nati for hash functions.
* Intelligently decodes URL-encoded and Base64-encoded cookies (i.e. the Base64 of a JWT) when the initial decoding fails.
* Supports many algorithms for HMAC-based decoders, even if the framework typically only uses one.
* Flexible base64-encoded wordlist format allows any sequence of bytes key to be added as an entry; ships with a reasonable default list.

| Framework | Supported | Notes |
|-------------------------|-----------|----------------------------------------------------------|
| JSON Web Tokens | ✅ | HS256, HS384, HS512 |
| Django | ✅ | Common algorithms |
| Flask | ✅ | Common algorithms |
| Rack | ✅ | Common algorithms |
| Express (cookie-signer) | ✅ | Common algorithms |
| Laravel | ✅ | AES-CBC-128/256 (GCM not yet supported) |
| itsdangerous | ✅ | URLSafeSerializer/URLSafeTimedSerializer (default salt) |
| Others | ❌ | Not yet! |

Getting Started

To install CookieMonster, install Go and then install the CLI:

CookieMonster only needs two essentials: a cookie to try and unsign, and a wordlist to use. If you don't have a wordlist, CookieMonster ships with a default wordlist from the Flask-Unsign project. CookieMonster wordlists are a bit different; each line must be encoded with base64. This is because Python projects are especially liberal with inserting garbage bytes into these keys, and we need to be able to properly handle them.

An example of using the CLI with a static cookie, or with a URL:

Express support

CookieMonster is capable of supporting cookies signed with cookie-session, which is common with Express. However, it does several strange things that require care in order to use this tool. A common response from a cookie-session application looks like this:

In order to pass this into CookieMonster, you must include both the cookie name and the signature cookie. In this example, you would call CookieMonster like this: cookiemonster -cookie session=eyJhbmltYWxzIjoibGlvbiJ9^QZNFI (note the delimiting ^ and the prefixed cookie name). The API accepts this same format in monster.NewCookie.

Resigning support

CookieMonster has limited support for resigning a cookie once it has been unsigned, with the -resign flag. This in modifying the body of the cookie to match your input, and then re-computing the signature with the key we discovered. Currently, you can do this for Django-decoded cookies; ensure you pass the original cookie to -cookie, and pass -resign an unencoded string of text you'd like to be inside the cookie. CookieMonster will correctly encode your input and then resign the cookie.

API usage

CookieMonster exposes pkg/monster, which allows other applications to easily take ad of it. This is much more performant than booting the CLI if you are testing many cookies. An example usage of it is below.

Credits

CookieMonster is built with inspiration from several sources, and ships with the excellent Flask-Unsign wordlists.

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项目信息

开发语言：Go

Star 数：996

技术要点

该项目属于漏洞知识库方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕🍪 CookieMonster helps you detect and abuse vulnerable implementations of stateless sessions.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。