From there I can leak the flask secret key and get into another user’s account, where I’ll find a misconfiguration that allows me to escape the container’s jail and read the user’s private SSH key.

From inside a container, I can reach a dev instance and an API that effectively let’s me apply a given regex to a file on the filesystem, which I’ll turn into a file read exploit with some Python scripting. I’ll start by exploiting an IDOR vulnerability to leak hashes, cracking one and getting access to a website that manages containers. It’s got a lot of enumerating and fuzzing to find next steps and a fair amount of programming required to solve. RainyDay is a different kind of machine from HackTheBox. Hackthebox ctf htb-rainyday nmap ffuf subdomain docker container feroxbuster idor john chisel foxyproxy socks proxychains api flask flask-cookie python python-requests youtube flask-unsign jail python-use-after-free unicode emoji john-rules htb-scanned

In Beyond Root, I’ll show two unintended ways that involved getting a shell as The other is a sed parameter injection. I’ll write a command injection payload to get execution as root. To pivot to root, I’ll abuse the website again with symlinks to have it write to a file that I can’t modify, which triggers an email being sent. With that, I’ll locate a backup archive and get a password from a config file that allows for SSH access. In that documentation, I’ll spot an awk injection that leads to a file disclosure vulnerability. I’ll find another API where I can get it to do a SSRF, and read internal documentation about the API. I’ll start by bypassing the auth check, and using that to find an API where I can dump user hashes. Hackthebox ctf htb-awkward nmap webpack vuejs wfuzz auth-bypass jwt jwt-io burp burp-repeater hashcat ssrf express api express-api awk awk-injection file-read hashcat-jwt python-jwt youtube python-requests xpad pspy mail gtfobins pm2 command-injectionĪwkward involves abusing a NodeJS API over and over again.

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