滴水3期逆向 ——内存分配，文件读写

#pragma warning(disable:4996)
#include 
using namespace std;

void homework()
{
	//注意把应用和txt文件都放在都一个目录下，我这里是在cpp文件目录下
	FILE* file = fopen("Afkayas.1.Exe", "rb");
	if (file == NULL)
	{
		cout << "打开文件失败" << endl;
		return;
	}

	if (fseek(file, 0, SEEK_END) != 0)
	{
		cout << "指针移动失败" << endl;
		fclose(file);
		return;
	}
	int size = ftell(file);
	unsigned char* data = (unsigned char*)malloc(size);
	memset(data, 0, size);
	cout << "数据内存地址 = " << &data << endl;
	if (fseek(file, 0, SEEK_SET) == 0)
	{

		fread(data, sizeof(char), size, file);

		//内存中的数据存储到一个文件，.exe格式，然后双击打开，看能否使用


		//发现是可以使用的

		FILE* writeFile = fopen("ceshi.txt", "wb");
		if (writeFile != NULL)
		{
			fwrite(data, sizeof(char), size, writeFile);
		}
		fclose(writeFile);
	}

	free(data);
	fclose(file);

}

int main()
{
	homework();
	return 0;
}