Simple HS256-512 JWT token brute force cracker
npm install jwt-cracker !npm
Simple HS256, HS384 & HS512 JWT token brute force cracker.
Effective only to crack JWT tokens with weak secrets.
Recommendation: Use strong long secrets or RS256 tokens.
With npm:
``bash`
npm install --global jwt-cracker
From command line:
`bash`
jwt-cracker -t
Where:
* token: the full HS256-512 JWT token string to crack
* alphabet: the alphabet to use for the brute force (default: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
* maxLength: the max length of the string generated during the brute force (default: 12)
* dictionaryFilePath: path to a list of passwords (one per line) to use instead of brute force
* force: force script to execute when the token isn't valid
This script requires Node.js version 16.0.0 or higher
Cracking the default jwt.io example:
`bash`
jwt-cracker -t eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ -a abcdefghijklmnopqrstuwxyz --max 6
It takes about 2 hours in a Macbook Pro (2.5GHz quad-core Intel Core i7).
Or using a list of passwords taken from https://github.com/danielmiessler/SecLists
`bash``
jwt-cracker -t eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ -d darkweb2017-top10000.txt
It takes less than a second.
Everyone is very welcome to contribute to this project.
You can contribute just by submitting bugs or suggesting improvements by
opening an issue on GitHub.
Licensed under MIT License. © Luciano Mammino.