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Fix typo in JWT key cracking explanation #556

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Fix typo in JWT key cracking explanation #556

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Fix typo in JWT key cracking explanation
parag25mcf10022 Jun 23, 2026
72e5dbd
Potential fix for pull request finding
parag25mcf10022 Jun 23, 2026
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2 changes: 1 addition & 1 deletion ...on_Security_Testing/06-Session_Management_Testing/10-Testing_JSON_Web_Tokens.md
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Expand Up @@ -146,7 +146,7 @@ If the JWT is signed using a HMAC-based algorithm (such as HS256), the security

If the application is using off-the-shelf or open source software, the first step should be go investigate the code, and see whether there is default HMAC signing key that is used.

If there isn't a default, then it may be possible to crack guess or brute-force they key. The simplest way to do this is to use the [crackjwt.py](https://github.com/Sjord/jwtcrack) script, which simply requires the JWT and a dictionary file.
If there isn't a default, then it may be possible to crack, guess, or brute-force the key. The simplest way to do this is to use the [crackjwt.py](https://github.com/Sjord/jwtcrack) script, which simply requires the JWT and a dictionary file.

A more powerful option is to convert the JWT into a format that can be used by [John the Ripper](https://github.com/openwall/john) using the [jwt2john.py](https://github.com/Sjord/jwtcrack/blob/master/jwt2john.py) script. John can then be used to carry out much more advanced attacks against the key.

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