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远程代码与命令执行

祝我什么都行,就是别祝我幸福,我要是拿走你的钱财,然后祝你发财,合适么。。。

—- 网易云热评

1、eval,将字符串当成PHP代码执行

新建php文件,代码如下

 eval($_GET['a']); //相当于执行eval(phpinfo())  

访问:

8a92cc8cc0284168a7269aa12a0cf4a9

2、assert,判断一个表达式是否成立

新一个PHP文件,代码如下

 echo(assert($_GET['a']>3));  

传递的参数大于3返回1,小于3,返回错误

985d4b2bf6584531956fbebbee39ecb6

3、system,执行系统命令,输出并返回最后一行结果

新建php文件,代码如下

 $a= $_GET['a']($_GET['b']);  

浏览器访问,

6b2811bf626d409ba0661585dc2cce9f

​4、exec,执行系统命令,只获取最后一行结果

新建php文件,代码如下

 $a= $_GET['a']($_GET['b']);echo $a;  

浏览器访问,

b51fa75795d740b3987e3a312acb0342

5、 passthru,执行系统命令,把命令的运行结果原样地直接输出到标准输出设备上

898652a6b72149609a757604f91ceac0

6、反引号,直接执行命令

新建php文件,代码如下

 echo `ipconfig`;  

访问该php文件

4e7ee9558a0645a79a67f4f9023e9c01

7、代码注入:

新建php文件,代码如下

 $a= $_GET['a'];eval("echo $a;");  

访问,结果如下

917a77182d4849c583ddd224aaa99b03

禁止非法,后果自负

90c0950e72ca481bb6c7fb92b8b1e26b

文章来源:智云一二三科技

文章标题:远程代码与命令执行

文章地址:https://www.zhihuclub.com/43323.shtml

关于作者: 智云科技

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