涉及到的漏洞包括：

爆破攻击
SQL注入攻击
命令注入攻击
XSS_r漏洞攻击
XSS_S漏洞攻击
upload漏洞攻击
File_Inclusion漏洞攻击

特别警告，数据包内容过长，下面数据包的截图是我拼接的

爆破攻击

爆破攻击的核心是在一定时间范围内频繁发起来连接请求，把握住这一点即可

攻击方式

低级难度：直接BurpSuite爆破
中级难度：直接BurpSuite爆破
高级难度：BurpSuite单线程爆破
详情可以参考我之前的文章DVWA闯关Brute Force

规则编写

alert tcp any any -> any any (msg:"DVWA-brute漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/brute"; fast_pattern:only; detection_filter:track by_dst, count 15, seconds 30; uricontent:"username="; pcre:"/username[\s=]+?.+?password[\s=]\w+?/iU"; flowbits:set,Brute_Force; metadata:service http; sid:2; rev:1;)
alert tcp any any -> any any (msg:"DVWA-brute漏洞攻击响应"; flow:established,to_client; content:"200 OK"; flowbits:isset,Brute_Force; metadata:service http; sid:22; rev:1;)

规则的核心是限制请求频率：

detection_filter:track by_dst, count 15, seconds 30;

SQL注入攻击

在DVWA中，正常的请求是输入一个数字（如下图），把握住这一点即可，只要用户在输入框中输入了非数字内容，就认为非法！

攻击方式

具体的攻击手段，参考DVWA之SQL Injection

低级难度攻击手段如下：

中级难度的攻击手段如下：

高级难度的攻击手段如下：

规则编写

由上面的攻击方式，可以知道，在控制请求时要编写两条规则，两条规则的区别主要体现在修饰符上，低级难度用U，中级和高级难度用P，并且在高级难度的攻击手段截图中，用绿色标记到了id和ID，这意味着高级难度的修饰符不能使用i

请求规则

alert tcp any any -> any any (msg:"DVWA-SQL注入攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/sqli"; fast_pattern:only; pcre:"/id[\s=]+?\d+?[^\d]+?/i"; flowbits:set,SQL_Injection; metadata:service http; sid:3; rev:1;)

响应规则
由于不同方式注入产生不同结果，而请求规则已经限制的足够了，所以响应规则不多限制

alert tcp any any -> any any (msg:"DVWA-SQL注入攻击响应"; flow:established,to_client; content:"200 OK"; flowbits:isset,SQL_Injection; metadata:service http; sid:333; rev:1;)

XSS反射型攻击

正常的请求如下图所示，所以控制XSS请求的核心在于特殊字符的控制，而响应包里面会包含请求的内容，所以针对响应包的规则编写也是在于特殊字符的检查

攻击方式

详情参考DVWA闯关XSS（Reflected）
（下面的截图是请求与响应的数据包拼接的）

低级难度攻击手段如下：

中级难度攻击手段如下：

高级难度攻击手段如下：

规则编写

alert tcp any any -> any any (msg:"DVWA-XSS_r漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/xss_r"; fast_pattern:only; uricontent:"name="; nocase; pcre:"/name[\s=]+?(%3c|\x3c|<).+?(%3E|\x3E|>)/iU"; flowbits:set,xss_reflect; metadata:service http; sid:4; rev:1;)
alert tcp any any -> any any (msg:"DVWA-XSS_r漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/Hello\s+?(%3c|\x3c|<).+?(%3E|\x3E|>)/i"; flowbits:isset,xss_reflect; metadata:service http; sid:44; rev:1;)

XSS存储型攻击

正常的请求如下图所示，在请求与响应的规则控制上与xss反射型相似

攻击方式

具体的攻击手段参考：DVWA之Stored XSS(存储型XSS)

低级难度攻击手段如下：

中级难度攻击手段如下：
友情提示，在构造payload时需要做URL编码，建议使用BurpSuite来做，HackBar或者一些在线工具做出来的可能会不符合要求

高级难度攻击手段如下：

规则编写

alert tcp any any -> any any (msg:"DVWA-XSS_S漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/xss_s"; fast_pattern:only; content:"txtName="; nocase; http_client_body; content:"mtxMessage="; nocase; http_client_body; pcre:"/(txtName|mtxMessage)[\s=]+?(%3C|\x3c|<).+?(%3E|\x3E|>)/iP"; flowbits:set,SQL_stored; metadata:service http; sid:5; rev:1;)
alert tcp any any -> any any (msg:"DVWA-XSS_S漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/Name:\s+?((%3C|\x3c|<).+?(%3E|\x3E|>))|Message:\s+?(%3C|\x3c|<).+?(%3E|\x3E|>)/i"; flowbits:isset,SQL_stored; metadata:service http; sid:55; rev:1;)

文件上传攻击

在DVWA中，文件上传如下图所示，要求上传图片，并且会给出路径。而文件上传的攻击思路则一般是直接上传一句话木马，或者更改文件类型，或者使用图片木马，但是这三种方法的共同特征就是会在上传的时候，可以检测到文件内容存在恶意代码。
响应内容里面会包含文件名，如果是上传的图片木马，在DVWA中，响应是没办法检查的，所以不必太在意响应的规则编写。

攻击方式

具体攻击方式参考DVWA闯关File Upload

低级难度攻击手段如下： 直接上传一句话木马

中级难度攻击手段如下： 修改文件类型，上传一句话木马

高级难度攻击手段如下： 使用图片木马

规则编写

请求规则：

alert tcp any any -> any any (msg:"DVWA-upload漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/upload"; fast_pattern:only; content:"name=|22|uploaded|22|"; content:"filename="; distance:0; pcre:"/filename[\s=]+?\x22.+?\.(php|phtml|html|php3|php5|jsp|asp|htm|war|phl|htaccess)|(eval|assert|call_user_func|preg_replace).+(_REQUEST|_GET|_POST|_COOKIES)/i"; flowbits:set,file_upload; metadata:service http; sid:6; rev:1;)

核心是这一段正则：

/filename[\s=]+?\x22.+?\.(php|phtml|html|php3|php5|jsp|asp|htm|war|phl|htaccess)|(eval|assert|call_user_func|preg_replace).+(_REQUEST|_GET|_POST|_COOKIES)/i

它的优点是可以不仅可以匹配直接上传非图片文件，还可以匹配文件内容中的恶意代码；
缺点是执行效率低下。
譬如对于中等难度的文件上传，需要执行5千多步才行

对于高级难度的文件上传，就很夸张了，执行了近40万步才匹配上

所以，推荐把文件后缀和文件内容两块内容分开来写，或者干脆只检查文件内容。
于是得到了如下的请求规则：
新的请求规则

alert tcp any any -> any any (msg:"DVWA-upload漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/upload"; fast_pattern:only; content:"name=|22|uploaded|22|"; content:"filename="; distance:0; pcre:"/(eval|assert|call_user_func|preg_replace).+(_REQUEST|_GET|_POST|_COOKIES)/i"; flowbits:set,file_upload; metadata:service http; sid:6; rev:1;)

另外，只有删除掉请求规则里面的正则，才可以匹配高级难度里的图片木马，否则无论正则怎么写都没法匹配，怀疑可能是数据包庞大导致snort分析出现问题，这也是唯一失败的一条规则，以后如果解决掉的话再补上

响应规则
根据“攻击方式”的截图可以看到，响应没有什么特殊的地方，所以不做严格检查

alert tcp any any -> any any (msg:"DVWA-upload漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/uploads\/.+?\.(php|phtml|html|php3|php5|jsp|asp|htm|war|phl|htaccess)?/i"; flowbits:isset,file_upload; metadata:service http; sid:66; rev:1;)

文件包含攻击

在DVWA中，正常的请求如下图，恶意请求一般为远程文件包含或者本地文件包含，这两种包含方式都要路径，那限制使用路径即可

攻击方式

具体攻击方式参考DVWA闯关File Inclusion

低级难度攻击手段如下：

中级难度攻击手段如下：

高级难度攻击手段如下：

规则编写

请求规则

alert tcp any any -> any any (msg:"DVWA-fi漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/fi"; fast_pattern:only; uricontent:"page="; nocase; pcre:"/page[\s=]+?.+(\x2F|\/|%2F|\x5C|\\|%5C).+\.(php|html|txt|jsp|aspx|conf|htaccess|md|ini|ico)/iU"; flowbits:set,file_Inclusion; metadata:service http; sid:7; rev:1;)

核心匹配代码：

pcre:"/page[\s=]+?.+(\x2F|\/|%2F|\x5C|\\|%5C).+\.(php|html|txt|jsp|aspx|conf|htaccess|md|ini|ico)/iU";

响应规则

全级别通过响应
alert tcp any any -> any any (msg:"DVWA-fi漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/main_body\">[\x0d\x09\x0a]+<br/i"; flowbits:isset,file_Inclusion; metadata:service http; sid:777; rev:1;)

主要是匹配截图中的那个空白字符，你可以使用正则匹配，我一开始也是这样做的，我当时写的规则如下，但snort死活就是无法响应高级难度的数据，所以最终使用了上面的那条规则，很无语

无法响应高级难度
alert tcp any any -> any any (msg:"DVWA-fi漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/main_body">\s+<br/i"; flowbits:isset,file_Inclusion; metadata:service http; sid:77; rev:1;)

命令注入攻击

在DVWA中，正常的命令输入如下，恶意的命令输入会在IP地址后面输入额外的字符，把握住这一点即可。

攻击方式

具体的攻击方式参考DVWA闯关Command Execution

低级难度攻击手段如下：

中级难度攻击手段如下：

高级难度攻击手段如下：
注意，输入127.0.0.1|net user并没有发生ping，只显示了net user的内容

规则编写

请求规则
这部分没什么好说的，主要检查是否在ip地址后面输入了其他内容

alert tcp any any -> any any (msg:"DVWA-命令注入攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/exec"; fast_pattern:only; content:"ip="; nocase; http_client_body; pcre:"/ip=\d+?\.\d+?\.\d+?\.\d+?[^\d]+?/iP"; flowbits:set,Command_Injection; metadata:service http; sid:1; rev:1;)

响应规则
这部分我本来是用正则匹配做的，但很不幸，snort无法响应高级难度，虽然正则可以匹配的上，正则如下：

/\x20=\x200ms\s+[\w\\\s-.]+<\/pre>|<pre>\s+[\w\\\s-.]+<\/pre>/is

成功匹配低级难度

成功匹配中级难度

成功匹配高级难度

既然snort无法响应高级难度的数据包，那就只好把低级和中级使用一条规则，高级使用另一条。
响应规则

alert tcp any any -> any any (msg:"DVWA-命令注入攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/\x20=\x200ms[\x0d\x0a]+?.*<\/pre>/is"; flowbits:isset,Command_Injection; metadata:service http; sid:11; rev:1;)
alert tcp any any -> any any (msg:"DVWA-命令注入攻击响应"; flow:established,to_client; content:"200 OK"; content:!"ms"; flowbits:isset,Command_Injection; metadata:service http; sid:111; rev:1;)

第二条响应规则是为高级难度量身打造的，主要是当主机不ping时，响应的内容里面没有ms（毫秒），根据这一点写规则。

汇总

命令注入
alert tcp any any -> any any (msg:"DVWA-命令注入攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/exec"; fast_pattern:only; content:"ip="; nocase; http_client_body; pcre:"/ip=\d+?\.\d+?\.\d+?\.\d+?[^\d]+?/iP"; flowbits:set,Command_Injection; metadata:service http; sid:1; rev:1;)
alert tcp any any -> any any (msg:"DVWA-命令注入攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/\x20=\x200ms[\x0d\x0a]+?.*<\/pre>/is"; flowbits:isset,Command_Injection; metadata:service http; sid:11; rev:1;)
alert tcp any any -> any any (msg:"DVWA-命令注入攻击响应"; flow:established,to_client; content:"200 OK"; content:!"ms"; flowbits:isset,Command_Injection; metadata:service http; sid:111; rev:1;)

爆破：
alert tcp any any -> any any (msg:"DVWA-brute漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/brute"; fast_pattern:only; detection_filter:track by_dst, count 15, seconds 30; uricontent:"username="; pcre:"/username[\s=]+?.+?password[\s=]\w+?/iU"; flowbits:set,Brute_Force; metadata:service http; sid:2; rev:1;)
alert tcp any any -> any any (msg:"DVWA-brute漏洞攻击响应"; flow:established,to_client; content:"200 OK"; flowbits:isset,Brute_Force; metadata:service http; sid:22; rev:1;)

SQL注入：
alert tcp any any -> any any (msg:"DVWA-SQL注入攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/sqli"; fast_pattern:only; pcre:"/id[\s=]+?\d+?[^\d]+?/iU"; flowbits:set,SQL_Injection; metadata:service http; sid:3; rev:1;)
alert tcp any any -> any any (msg:"DVWA-SQL注入攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/sqli"; fast_pattern:only; pcre:"/id[\s=]+?\d+?[^\d]+?/P"; flowbits:set,SQL_Injection; metadata:service http; sid:33; rev:1;)
alert tcp any any -> any any (msg:"DVWA-SQL注入攻击响应"; flow:established,to_client; content:"200 OK"; flowbits:isset,SQL_Injection; metadata:service http; sid:333; rev:1;)

XSS反射型：
alert tcp any any -> any any (msg:"DVWA-XSS_r漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/xss_r"; fast_pattern:only; uricontent:"name="; nocase; pcre:"/name[\s=]+?(%3c|\x3c|<).+?(%3E|\x3E|>)/iU"; flowbits:set,xss_reflect; metadata:service http; sid:4; rev:1;)
alert tcp any any -> any any (msg:"DVWA-XSS_r漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/Hello\s+?(%3c|\x3c|<).+?(%3E|\x3E|>)/i"; flowbits:isset,xss_reflect; metadata:service http; sid:44; rev:1;)

XSS存储型：
alert tcp any any -> any any (msg:"DVWA-XSS_S漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/xss_s"; fast_pattern:only; content:"txtName="; nocase; http_client_body; content:"mtxMessage="; nocase; http_client_body; pcre:"/(txtName|mtxMessage)[\s=]+?(%3C|\x3c|<).+?(%3E|\x3E|>)/iP"; flowbits:set,SQL_stored; metadata:service http; sid:5; rev:1;)
alert tcp any any -> any any (msg:"DVWA-XSS_S漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/Name:\s+?((%3C|\x3c|<).+?(%3E|\x3E|>))|Message:\s+?(%3C|\x3c|<).+?(%3E|\x3E|>)/i"; flowbits:isset,SQL_stored; metadata:service http; sid:55; rev:1;)

upload：
alert tcp any any -> any any (msg:"DVWA-upload漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/upload"; fast_pattern:only; content:"name=|22|uploaded|22|"; content:"filename="; distance:0; pcre:"/filename[\s=]+?\x22.+?\.(php|phtml|html|php3|php5|jsp|asp|htm|war|phl|htaccess)|(eval|assert|call_user_func|preg_replace).+(_REQUEST|_GET|_POST|_COOKIES)/i"; flowbits:set,file_upload; metadata:service http; sid:6; rev:1;)
alert tcp any any -> any any (msg:"DVWA-upload漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/uploads\/.+?\.(php|phtml|html|php3|php5|jsp|asp|htm|war|phl|htaccess)?/i"; flowbits:isset,file_upload; metadata:service http; sid:66; rev:1;)

file_inlude：
alert tcp any any -> any any (msg:"DVWA-fi漏洞攻击"; flow:to_server,established; uricontent:"DVWA-master/vulnerabilities/fi"; fast_pattern:only; uricontent:"page="; nocase; pcre:"/page[\s=]+?.+(\x2F|\/|%2F|\x5C|\\|%5C).+\.(php|html|txt|jsp|aspx|conf|htaccess|md|ini|ico)/iU"; flowbits:set,file_Inclusion; metadata:service http; sid:7; rev:1;)
alert tcp any any -> any any (msg:"DVWA-fi漏洞攻击响应"; flow:established,to_client; content:"200 OK"; pcre:"/main_body\">[\x0d\x09\x0a]+<br/i"; flowbits:isset,file_Inclusion; metadata:service http; sid:777; rev:1;)