MyJWT - 用于破解、测试Jso上的漏洞的CLI

项目说明

MyJWT

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Introduction

This cli is for pentesters, CTF players, or dev.<br>
You can modify your jwt, sign, inject ,etc...<br>
Check Documentation for more information.<br>
If you see problems or enhancement send an issue.I will respond as soon as possible.
Enjoy :)

Documentation

Documentation is a at

Table of Contents

Features

Installation

Usage

Examples

Download

Contribute

ChangeLog

Features

copy new jwt to clipboard

user Interface (thanks questionary)

color output

modify jwt (header/Payload)

None

RSA/HMAC confusion

Sign a jwt with key

Brute Force to guess key

crack jwt with regex to guess key

kid injection

Jku Bypass

X5u Bypass

Installation

To install myjwt, simply use pip:

To run mywt from a docker image, run:

To install myjwt, on git:

To install myjwt on BlackArch:

![Packaging status]()

Usage

Modify JWT

| Option | Type | Example | help|
| --------------------------- |:---------:|:--------:| ---:|
| --ful-payload | JSON | {"user": "admin"} | New payload for your jwt.|
| -h, --add-header | key=value | user=admin | Add a new key, value to your jwt header, if key is present old value will be replaced.|
| -p, --add-payload | key=value | user=admin | Add a new key, value to your jwt payload, if key is present old value will be replaced.|

Check Your JWT (HS alg)

| Option | Type | Example | help|
--- | --- | --- | ---
| --sign | text | mysecretkey | Sign Your jwt with your key
| -- | text | mysecretkey | your key.

Exploit

| Option | Type | Example | help|
--- | --- | --- | ---
| -none, --none- | Nothing | | Check None Alg .
| --hmac | PATH | ./public.pem | Check RS/HMAC Alg , and sign your jwt with public key.
| --bruteforce | PATH | ./wordlist/big.txt | Bruteforce to guess th secret used to sign the token. Use txt file with all password stored(1 by line)
| --crack | REGEX | "[a-z]{4}" | regex to iterate all string possibilities to guess the secret used to sign the token.
| --kid | text | "00; echo /etc/.passwd" | Kid Injection sql
| --jku | text | MYPUBLICIP | Jku Header to bypass authentication, use --file if you want to change your jwks file name, and --key if you want to use your own private pem
| --x5u | text | MYPUBLICIP | For jku or x5c Header, use --file if you want to change your jwks file name, and --key if you want to use your own private pem

Send your jwt

| Option | Type | Example | help|
--- | --- | --- | ---
| -u, --url | url | Url to send your jwt.
| -m, --method | text | POST | Method use to send request to url.(Default: GET).
| -d, --data | key=value | secret=MY_JWT | Data send to your url.Format: key=value. if value = MY_JWT value will be replace by your new jwt.
| -c, --cookies | key=value | secret=MY_JWT | Cookies to send to your url.Format: key=value.if value = MY_JWT value will be replace by your new jwt.

Other

| Option | Type | Example | help|
--- | --- | --- | ---
| --crt | PATH | ./public.crt| For x5cHeader, force crt file
| --key | PATH | ./private.pem| For jku or x5c Header, force private key to your key file
| --file | text | myfile| For jku Header, force file name without .json extension
| --print | Nothing | | Print Decoded JWT
| --help | Nothing | | Show Helper message and exit.
| -- | Nothing | | Show Myjwt

Examples

Modify Your jwt

None Check

Sign Key

Brute Force Signature

RSA/HMAC Confusion

Kid Injection

Send your new Jwt to url

Jku

X5u

Modify your Jwt

CLI

Code

Full example here: 01-modify-jwt

None

CLI

CODE

Full example here: 02-none-

Sign Key

CLI

CODE

Full example here: 03-sign-key

Brute Force

CLI

CODE

Full example here: 04-brute-force

Crack

CLI

RSA/HMAC Confusion

CLI

CODE

Full example here: 05-rsa-hmac-confusion

Kid Injection

CLI

Code

Full example here: 06-kid-injection

Send your new Jwt to url

CLI

Jku

CLI

Code

Full example here: 07-jku-bypass

X5U

CLI

Code

Full example here: 08-x5u-bypass

Download

Check github releases. Latest is a at

Contribute

Fork this repository or clone it

Create a new branch (feature, hotfix, etc...)

Make necessary changes and commit those changes

Check lint with make lint

Check unit_test with make test

Send Pull Request

I will check as Soon as Possible.

Change log

The log's become rather long. It moved to its own file.

See CHANGES.

项目信息

开发语言：Python

Star 数：139

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A cli for cracking, testing vulnerabilities on Json Web Token(JWT)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。