Shell

Providers:

Person	Hostname	Net	Description	Contact
aix	entropy.aix.ovh & entropy.aix.dn42	clearnet & dn42	See below	aix @ hackint
mortzu	shell.mortzu.dn42	dn42 only	-	-

Entropy shellbox

The Entropy shellbox runs a Grsecurity secured kernel, along with various other hardening features such as RBAC and some sysctl tweaks. It has an internal mail system which anyone can use to contact a shell user ([user]@entropy.aix.ovh). Additionally, it has all of the BlackArch tools installed and available for everyone to use. To further enhance security, the ownership of various SUID executables and logs has been restricted to members of certain groups, which are nicely explained by the MOTD:

      tpe: allows you to execute files not in root-owned
              directories writeable only by root

      nosock: cannot open any sockets
      noclisock: cannot open client sockets
      noservsock: cannot open server sockets

      viewproc: can see all processes on the system

      suid: can run `su`, `sudo`, `gpasswd` and `chage`
      usrsuid: can run `newgrp`, `chsh`, `chfn` and `at`

      share: can write to `/srv/share`

      snoop: can see users logged on to the system
              and their addresses

      msg: can run `wall` and `write`

      cron: can use the cron system

      volumes: can use `mount`, `umount` and `mount.nfs`

      audit: your activities are logged

By default, users will be part of only tpe and audit groups (as well as their own) but may request to be added to other groups. Please note that the only execve() and chdir() calls are logged as a result of a user's membership of the audit group.

Lastly, in the interests of full disclosure, here are the details of the box (Subject to change).