What to do when you have a shell?
history
whoami
uname -a
cat /etc/issue
cat /etc/passwd
sudo -l
crontab -l
ls -lhtrR /etc/cron*
ls -lhtrR /etc/sudo*
ls -lhtrR /home
LinPEAS / LSE
set
getuid
ipconfig /all
arp -a
netstat -ano
dir C:\
WinPEAS