scastro@entreelibre.com:~$ cd PUB && ls -oR | sed 's/.html//'
.:
total 4
-r--r--r--    1 scastro       974 Feb 12 21:36 misc
-r--r--r--    1 scastro      1416 Sep 10 21:36 ptp
-r--r--r--    1 scastro      2149 Sep 10 21:36 ptp_vortex
-r--r--r--    1 scastro      1805 Sep 10 21:36 ptp_semtex

scastro@entreelibre.com:~$ clear && cat semtex

Semtex wargame is 10 levels long :

  http://pulltheplug.org/wargames/semtex/

  o level 0 : Network based. You have to create a program that connects to a port, reads specific
              data that will create a binary giving the password.

  o level 1 : You have to reverse the crypt algorithm of a program to decode a key.

  o level 2 : Tricking a program with LD_PRELOAD

  o level 3 : Mathematic based but brute forcing every possibility is easier.

  o level 4 : Ptrace a program to make it print the next level password.

  o level 5 : Network based. 10 connections from 10 different IP, read data, compute answer and
              send it back (with open socks5 proxy...)
  
  o level 6 : Spoof an icmp packet from a .gov IP and get the password while logged on irc.
    => still working on

  o level10 : Brute force a weak authentication in a tcp server.
    => still working on

  $ More information

scastro@entreelibre.com:~$ ls -oR | sed 's/.html//'