I already knew about the JWT token, but not in all its forms and this is a new modality that I had never approached before. "n": "AMVcGPF62MA_lnClN4Z6WNCXZHbPYr-dhkiuE2kBaEPYYclRFDa24a-AqVY5RR2NisEP25wdHqHmGhm3Tde2xFKFzizVTxxTOy0OtoH09SGuyl_uFZI0vQMLXJtHZuy_YRWhxTSzp3bTeFZBHC3bju-UxiJZNPQq3PMMC8oTKQs5o-bjnYGi3tmTgzJrTbFkQJKltWC8XIhc5MAWUGcoI4q9DUnPj_qzsDjMBGoW1N5QtnU91jurva9SJcN0jb7aYo2vlP1JTurNBtwBMBU99CyXZ5iRJLExxgUNsDBF_DswJoOxs7CAVC5FjIqhb1tRT圓afMWsmGqw8HiUA2WFYcs", I enter the new domain in my /etc/hosts file and proceed to browse the server URL which appears to handle the JWT token. In this case, there is not very useful information in the payload (only our username, which we know, however), it is instead in the header that we find something interesting: a domain that would have been almost impossible to recover through normal hacking techniques. Let's try to decrypt it and analyze its content. eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImprdSI6Imh0dHA6Ly9oYWNrbWVkaWEuaHRi元4WotJtCuNQ0KVi3aRWPvlgpZSxX-b1MtUPNe3F82-yTrWPOVliEh4FnCgqj_bEzpIvJYLCZz0d68g2Wz_dMfWKDUwkTXQZjs8cYSSkboPzEt5E8V1YAUsypyrqgkwzuPjEJmfDIBUw6DnUtLWbn4xTtgCmJUz5aDEuf48iRMaAagaq0khZDjGxu9tFnhwTM5i8Kcnq9iuOFLf8ZsEOBf0serDIY9ttkYdzuOuNLJZ0rQTXQhg09UZ-cGWcqT8-9N0XupEwz_Ja1UcRmpXHvXHxC3jzua5fflPIiJwOduKo9yHwwMpPMtY-4i7U_3LIQv-SpFFII1XZGgI-Q I then return to the portal, approaching a deeper analysis, within the pages and application features. Check Wfuzz's documentation for more information. Wfuzz might not work correctly when fuzzing SSL sites. usr/lib/python3/dist-packages/wfuzz/_init_.py:34: UserWarning:Pycurl is not compiled against Openssl. Then the " redirect" page, found in the welcome home, returns ().Īt this point I try to search for some subdomain with the wfuzz: ┌──(in7rud3r㉿Mykali). returns the message " string" NoneType: None "" even returns 404, page not found (what a strange way to handle errors)
SSV3 PAYLOAD EXTRACTOR CODE
redirects the page with HTTP code 401 ( unauthorized) Many of the URLs identified are already known, while the others do not provide new hints: WORDLIST_FILES: /usr/share/dirb/wordlists/common.txt Let's go ahead with the dirb in search of hidden routes: ┌──(in7rud3r㉿Mykali).
SSV3 PAYLOAD EXTRACTOR PDF
It requires a pdf file, but there seems to be no control, unfortunately, the path that allows you to reach the uploaded file is not provided, nor, much less, there seems to be any process that processes the file on the server-side (but it is too early for hypotheses). The subscription page seems (not) to work even without data, while another page allows you to upload a file. We continue to navigate the portal, but there isn't much hidden away to discover. We proceed to register and log in with our new user. In the centre of the page a button that allows you to be redirected to an external (or internal) link through a specific feature (it could be a feature put there on purpose with some vulnerability, remember, it will be useful later).
SSV3 PAYLOAD EXTRACTOR REGISTRATION
Additional links lead to the login and registration page for new users. Nmap done: 1 IP address (1 host up) scanned in 22.89 secondsĪ simple threat analysis portal.
Service Info: OS: Linux CPE: cpe:/o:linux:linux_kernel Let's begin with the nmap scan: Starting Nmap 7.91 ( ) at 21:27 CETĢ2/tcp open ssh OpenSSH 8.2p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux protocol 2.0) 23 min read Violin of Fear by Archie BlondinetĪ BOX called Unicode heralds an interesting challenge and the name indicates the way forward to the foothold, immediately followed by two other critical points, I had a lot of fun looking for the right joint to reach the flags with this box.
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