chmod: Operation not permitted

how can change my folder permissions? I also tried it as root but it did not work and I also cannot change the ownership.

root@darkmark:~# pwd
/root
root@darkmark:~# sudo chown -R darkmark '/home/darkmark/hs'
chown: changing ownership of '/home/darkmark/hs': Operation not permitted
root@darkmark:~# sudo chmod 755 '/home/darkmark/hs'
chmod: changing permissions of '/home/darkmark/hs': Operation not permitted
root@darkmark:~# _

darkmark@darkmark:~$ ls -l
total 32
drwxrwxr-x 4 darkmark darkmark 4096 Jul 12 15:39 dictionaries
drwxrwxr-x 3 darkmark darkmark 4096 Jul 12 21:27 Directory-Wordlist
drwxrwxrwx 2 darkmark darkmark 4096 Jul 14 20:35 Downloads
drwxrwxrwx 3 root     root     4096 Jul 10 16:55 hs
drwxrwxr-x 5 darkmark darkmark 4096 Jul 10 15:32 Main_data_dir
drwxrwxr-x 6 darkmark darkmark 4096 Jul 12 19:46 SecLists
drwxrwxr-x 3 darkmark darkmark 4096 Jul 14 20:35 wifite
drwxrwxr-x 3 darkmark darkmark 4096 Jul 14 20:57 wordlist
darkmark@darkmark:~$ sudo chmod -rw hs
[sudo] password for darkmark:
chmod: changing permissions of 'hs': Operation not permitted
darkmark@darkmark:~$ _

The dir probably has the immutable attribute set. Try

# chattr -R -ia hs

Also, use the search function before posting.