fofa 正则表达式

正则表达式解释正则表达式，也称为规则表达式、正规表示式，是一种特殊的字符序列，它能描述一些文本模式。

它可以帮助我们快速的匹配某些特定的文本文件，可以用来搜索、编辑等，是模糊匹配也可以是精确匹配。

在许多字符串处理方面，正则表达式都是非常有用的。

正则表达式主要由字母、数字、专用字符（称为meta字符）组成，比如：d+表示匹配以一个或多个数字开头的字符串；[a-z0-9]表示匹配以字母或数字开头的字符串；[^a-z]表示匹配非字母开头的字符串等等。

正则表达式分为基本正则表达式(basic regular expressions)和扩展正则表达式(extended regular expressions)。

基本正则表达式只支持一些简单的匹配策略，比如匹配字符，只能支持精确匹配。

而扩展正则表达式支持更多的匹配策略，它可以帮助我们更好的匹配特定的文本文件，可以模糊匹配，也可以进行精确的匹配。

正则表达式的应用非常广泛，可以用在编辑器、程序语言、网络抓取、数据库、搜索引擎等场景中。

在编辑器中，可以使用正则表达式来搜索替换文本，做到一次性替换多行文本中的某些字符或模式；在程序语言中，也可以使用正则表达式来验证用户输入的信息，检查是否符合某些格式要求；在网络抓取中，可以使用正则表达式来抓取网络上的某些特定信息；在数据库中，可以使用正则表达式来查找满足特定格式的数据；在搜索引擎中，可以使用正则表达式来快速搜索到所需信息等等。

正则表达式的使用也是一门技术，学会了正则表达式的用法，可以极大的提高我们的效率，帮助我们有效的完成一些复杂的任务。

但是，学习正则表达式也是一项技术性很强的工作，需要花费大量的时间和精力去研究学习。

总之，正则表达式是一种非常有用的工具，在我们日常的工作中能够帮助我们不断提高效率，节省大量的时间。

学习正则表达式也是一门技术，通过不断的学习和研究，希望能够在有效的时间内掌握这门技术，为我们的学习和工作带来更多的便利。

正则表达式之捕获组⾮捕获组介绍捕获组语法：字符描述⽰例(pattern)匹配pattern并捕获结果，⾃动设置组号。

(abc)+d匹配abcd或者abcabcd (?<name>pattern)或(?'name'pattern)匹配pattern并捕获结果，设置name为组名。

\num对捕获组的反向引⽤。

其中 num 是⼀个正整数。

(\w)(\w)\2\1匹配abba\k< name >或\k' name '对命名捕获组的反向引⽤。

其中 name 是捕获组名。

(?<group>\w)abc\k<group>匹配xabcx使⽤⼩括号指定⼀个⼦表达式后，匹配这个⼦表达式的⽂本(也就是此分组捕获的内容)可以在表达式或其它程序中作进⼀步的处理。

默认情况下，每个捕获组会⾃动拥有⼀个组号，规则是：从左向右，以分组的左括号为标志，第⼀个出现的分组的组号为1，第⼆个为2，以此类推。

例如：(\d{4})-(\d{2}-(\d{2}))1 123 32以下是⽤程序处理捕获组的⽰例，对⼀个Url地址进⾏解析，并显⽰所有捕获组。

可以看到按顺序设置的捕获组号。

Regex.Match⽅法复制代码代码如下:using System.Text.RegularExpressions;namespace Wuhong.Test{class Program{static void Main(string[] args){//⽬标字符串string source = "http://reg-test-server:8080/download/file1.html# ";//正则式string regex = @"(\w+):\/\/([^/:]+)(:\d+)?([^# :]*)";Regex regUrl = new Regex(regex);//匹配正则表达式Match m = regUrl.Match(source);Console.WriteLine(m.Success);if (m.Success){//捕获组存放在Match.Groups集合中，索引值从1开始，索引0处为匹配的整个字符串值//按“组号 : 捕获内容”的格式显⽰for (int i = 0; i < m.Groups.Count; i++){Console.WriteLine(string.Format("{0} : {1}", i, m.Groups[i]));}}Console.ReadLine();}}}也可以⾃⼰指定⼦表达式的组名。

fofa的使用方法Fofa是一款专业的网络安全搜索引擎，可以帮助用户快速定位到目标主机和敏感信息。

下面将介绍Fofa的使用方法，帮助用户更好地利用这个强大的工具。

一、注册和登录用户需要注册一个Fofa账号，并且登录进入Fofa的官方网站。

注册时需要填写有效的邮箱和设置密码，登录成功后即可开始使用Fofa。

二、搜索语法Fofa支持多种搜索语法，用于精确搜索目标信息。

常用的语法包括：ip、port、protocol、country、city、domain等。

用户可以根据自己的需求组合使用这些语法，以获取准确的搜索结果。

三、基础搜索1. 单个关键词搜索：用户可以输入一个关键词进行搜索，例如输入"admin"，即可搜索包含"admin"关键词的目标信息。

2. 多个关键词搜索：用户可以使用逻辑运算符AND和OR来组合多个关键词进行搜索。

例如输入"admin AND password"，即可搜索同时包含"admin"和"password"关键词的目标信息。

四、高级搜索Fofa还提供了一些高级搜索功能，帮助用户更精确地定位到目标信息。

1. 使用限定符：用户可以使用限定符来缩小搜索范围，例如输入"port:80"，即可搜索开放了80端口的目标主机。

2. 使用过滤器：用户可以使用过滤器来排除不符合要求的搜索结果，例如输入"country:CN -ip:192.168.0.0/16"，即可搜索中国境内但排除了192.168.0.0/16网段的目标信息。

3. 使用正则表达式：用户可以使用正则表达式来匹配复杂的搜索模式，例如输入"title:/^admin.*$/"，即可搜索标题以"admin"开头的目标网站。

五、结果分析搜索完成后，Fofa会返回一系列符合搜索条件的目标信息。

常用正则表达式合集
以下是常用正则表达式合集：
1. 数字：^[0-9]+$
2. 英文大写字母：^[A-Z]+$
3. 英文小写字母：^[a-z]+$
4. 长度为n的字符串：^.{n}$
5. 匹配以a开头的字符串：^a.$
6. 匹配以a结尾的字符串：^.a$
7. 匹配以a开头和结尾的字符串：^a.a$
8. 匹配以1到5个a组成的字符串：^.{1,5}a$
9. 匹配1到30个任意字符组成的长度为偶数的字符串：^.{1,30}..{1,30}$
10. 匹配由数字组成的字符串：^\d+$
11. 匹配由数字和逗号组成的字符串：^\d+([,]\d+)$
12. 匹配以a开头和中间出现一个或多个空格的字符串：^a\s+.$
13. 匹配不包含特定字符的字符串：^[不留空白符].[^不能包含特定字符符]{0}$
14. 匹配由a开头，以任意字符重复出现奇数次的字符串：^a.{1,2}$
15. 匹配由数字和下划线组成的字符串：^[0-9_]+$
16. 匹配由数字、字母和下划线组成的字符串：^[0-9a-zA-Z_]+$
17. 匹配以数字和字母组成的字符串：^[0-9a-zA-Z]+$
18. 匹配由长度为n的任意字符组成的字符串：^.{n}$
19. 匹配由长度为n的任意字符组成的长度为偶数的字符串：^.{n}..{n}$
20. 匹配以数字和字母组成的长度为偶数的字符串：^[0-9a-zA-Z].[0-9a-zA-Z]$。

各式各样的正则表达式参考大全：^\d+$//匹配非负整数（正整数+ 0）//匹配整数^\d+(\.\d+)?$//匹配非负浮点数（正浮点数+ 0）^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$//匹配正浮点数^((-\d+(\.\d+)?)|(0+(\.0+)?))$//匹配非正浮点数（负浮点数+ 0）^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$//匹配负浮点数^(-?\d+)(\.\d+)?$//匹配浮点数^[A-Za-z]+$????????? //匹配由26个英文字母组成的字符串^[A-Z]+$??? //匹配由26个英文字母的大写组成的字符串^[a-z]+$//匹配由26个英文字母的小写组成的字符串^[A-Za-z0-9]+$//匹配由数字和26个英文字母组成的字符串^\w+$//匹配由数字、26个英文字母或者下划线组成的字符串^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$//匹配email地址^[a-zA-z]+://匹配(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$//匹配url匹配中文字符的正则表达式：[\u4e00-\u9fa5]匹配双字节字符(包括汉字在内)：[^\x00-\xff]匹配空行的正则表达式：\n[\s| ]*\r匹配HTML标记的正则表达式：/<(.*)>.*<\/>|<(.*) \/>/匹配首尾空格的正则表达式：(^\s*)|(\s*$)匹配Email地址的正则表达式：\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*匹配网址URL的正则表达式：^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$ 匹配帐号是否合法(字母开头，允许5-16字节，允许字母数字下划线)：^[a-zA-Z][a-zA-Z0-9_]{4,15}$匹配国内电话号码：(\d{3}-|\d{4}-)?(\d{8}|\d{7})?匹配腾讯QQ号：^[1-9]*[1-9][0-9]*$下表是元字符及其在正则表达式上下文中的行为的一个完整列表，具体到每个正则表达式符号：\ 将下一个字符标记为一个特殊字符、或一个原义字符、或一个后向引用、或一个八进制转义符。

（转载）fofa语法的cms识别脚本可以看到识别规则会包含⼀些逻辑运算符，原作者只使⽤了正则来粗略的处理，感觉误报会很多，于是我⽤“后缀表达式”的⽅法来识别这些运算符，感觉算是可以完美处理这些规则了。

⽀持 body=”” titile=”” 这些语法，⽀持 && || ( ) 等的运算符。

同时也把sqlite数据导出为json格式，然后⾃⼰也加了⼀些识别规则。

p s: ⽤类似表达式的⽅式来作指纹识别，只访问⼀次⾸页就能得出结果，⽤各种运算符来保证准确性，感觉挺不错的。

指纹[{"name": "Dell-Printer","rule": "title=\"Dell Laser Printer\"","program": ""},{"name": "HP-OfficeJet-Printer","rule": "title=\"HP Officejet\" || body=\"align=\"center\">HP Officejet\"","program": ""},{"name": "Biscom-Delivery-Server","rule": "body=\"/bds/stylesheets/fds.css\" || body=\"/bds/includes/fdsJavascript.do\"","program": ""},{"name": "DD-WRT","rule": "body=\"style/pwc/ddwrt.css\"","program": ""},{"name": "ewebeditor","rule": "body=\"/ewebeditor.htm?\"","program": ""},{"name": "fckeditor","rule": "body=\"new FCKeditor\"","program": ""},{"name": "xheditor","rule": "body=\"xheditor_lang/zh-cn.js\"||body=\"class=\"xheditor\"||body=\".xheditor(\"","program": ""},{"name": "百为路由","rule": "body=\"提交验证的id必须是ctl_submit\"","program": ""},{"name": "锐捷NBR路由器","rule": "body=\"free_nbr_login_form.png\"","program": ""},{"name": "mikrotik","rule": "title=\"RouterOS\" && body=\"mikrotik\"","program": ""},{"name": "ThinkSNS","rule": "body=\"/addons/theme/\" && body=\"全局变量\"","program": ""},{"name": "h3c路由器","rule": "title=\"Web user login\" && body=\"nLanguageSupported\"","program": ""},{"name": "jcg⽆线路由器","rule": "title=\"Wireless Router\" && body=\"\"","program": ""},{"name": "D-Link_VoIP_Wireless_Router","rule": "title=\"D-Link VoIP Wireless Router\"","program": ""},{"name": "arrisi_Touchstone","rule": "title=\"Touchstone Status\" || body=\"passWithWarnings\"","program": ""},{"name": "ZyXEL","rule": "body=\"Forms/rpAuth_1\"","program": ""},{"name": "Ruckus","rule": "body=\"mon. Tell me your username\" || title=\"Ruckus Wireless Admin\"","program": ""},{"name": "Motorola_SBG900","rule": "title=\"Motorola SBG900\"","program": ""},{"name": "Wimax_CPE","rule": "title=\"Wimax CPE Configuration\"","program": ""},{"name": "Cisco_Cable_Modem","rule": "title=\"Cisco Cable Modem\"","program": ""},{"name": "Scientific-Atlanta_Cable_Modem","rule": "title=\"Scientific-Atlanta Cable Modem\"","program": ""},{"name": "rap","rule": "body=\"/jscripts/rap_util.js\"","program": ""},{"name": "ZTE_MiFi_UNE","rule": "title=\"MiFi UNE 4G LTE\"","program": ""},{"name": "ZTE_ZSRV2_Router","rule": "title=\"ZSRV2路由器Web管理系统\" && body=\"ZTE Corporation. All Rights Reserved.\"","program": ""},{"name": "百为智能流控路由器","rule": "title=\"BYTEVALUE 智能流控路由器\" && body=\"<a href=\"/\" target=\"_blank\">\"", "program": ""},{"name": "乐视路由器","rule": "title=\"乐视路由器\" && body=\"<div class=\"login-logo\"></div>\"","program": ""},{"name": "Verizon_Wireless_Router","rule": "title=\"Wireless Broadband Router Management Console\" && body = \"verizon_logo_blk.gif\"","program": ""},{"name": "Nexus_NX_router","rule": "body=\"/\" && title=\"Nexus NX\"","program": ""},{"name": "Verizon_Router","rule": "title=\"Verizon Router\"","program": ""},{"name": "⼩⽶路由器","rule": "title=\"⼩⽶路由器\" ","program": ""},{"name": "QNO_Router","rule": "body=\"/QNOVirtual_Keyboard.js\" && body=\"/images/login_img01_03.gif\"","program": ""},{"name": "爱快流控路由","rule": "title=\"爱快\" && body=\"/resources/images/land_prompt_ico01.gif\"","program": ""},{"name": "Django","rule": "body=\"__admin_media_prefix__\" || body=\"csrfmiddlewaretoken\"","program": ""},{"name": "axis2-web","rule": "body=\"axis2-web/css/axis-style.css\"","program": ""},{"name": "Apache-Wicket","rule": "body=\"xmlns:wicket=\" || body=\"/org.apache.wicket.\"","program": ""},{"name": "BEA-WebLogic-Server","rule": "body=\"<h1>BEA WebLogic Server\" || body=\"WebLogic\"","program": ""},{"name": "EDK","rule": "body=\"<!-- /killlistable.tpl -->\"","program": ""},{"name": "eDirectory","rule": "body=\"target=\"_blank\">eDirectory&trade\" || body=\"Powered by <a href=\"\"", "program": ""},{"name": "Esvon-Classifieds","rule": "body=\"Powered by Esvon\"","program": ""},{"name": "Fluid-Dynamics-Search-Engine","rule": "body=\"content=\"fluid dynamics\"","program": ""},{"name": "mongodb","rule": "body=\"<a href=\"/_replSet\">Replica set status</a></p>\"","program": ""},{"name": "MVB2000","rule": "title=\"MVB2000\" || body=\"The Magic Voice Box\"","program": ""},{"name": "GPSweb","rule": "title=\"GPSweb\"","program": ""},{"name": "phpinfo","rule": "title=\"phpinfo\" && body=\"Virtual Directory Support \"","program": ""},{"name": "lemis管理系统","rule": "body=\"lemis.WEB_APP_NAME\"","program": ""},{"name": "FreeboxOS","rule": "title=\"Freebox OS\" || body=\"logo_freeboxos\"","program": ""},{"name": "Wimax_CPE","rule": "title=\"Wimax CPE Configuration\"","program": ""},{"name": "Scientific-Atlanta_Cable_Modem","rule": "title=\"Scientific-Atlanta Cable Modem\"","program": ""},{"name": "rap","rule": "body=\"/jscripts/rap_util.js\"","program": ""},{"name": "ZTE_MiFi_UNE","rule": "title=\"MiFi UNE 4G LTE\"","program": ""},{"name": "⽤友商战实践平台","rule": "body=\"Login_Main_BG\" && body=\"Login_Owner\"","program": ""},{"name": "moosefs","rule": "body=\"mfs.cgi\" || body=\"under-goal files\"","program": ""},{"name": "蓝盾BDWebGuard","rule": "body=\"BACKGROUND: url(images/loginbg.jpg) #e5f1fc\"","program": ""},{"name": "护卫神⽹站安全系统","rule": "title=\"护卫神.⽹站安全系统\"","program": ""},{"name": "phpDocumentor","rule": "body=\"Generated by phpDocumentor\"","program": ""},{"name": "Adobe_ CQ5","rule": "body=\"_jcr_content\"","program": ""},{"name": "Adobe_GoLive","rule": "body=\"generator\" content=\"Adobe GoLive\"","program": ""},{"name": "Adobe_RoboHelp","rule": "body=\"generator\" content=\"Adobe RoboHelp\"","program": ""},{"name": "Amaya","rule": "body=\"generator\" content=\"Amaya\"","program": ""},{"name": "OpenMas","rule": "title=\"OpenMas\" || body=\"loginHead\"><link href=\"App_Themes\"","program": ""},{"name": "recaptcha","rule": "body=\"recaptcha_ajax.js\"","program": ""},{"name": "TerraMaster","rule": "title=\"TerraMaster\" && body=\"/js/common.js\"","program": ""},{"name": "创星伟业校园⽹群","rule": "body=\"javascripts/float.js\" && body=\"vcxvcxv\"","program": ""},{"name": "正⽅教务管理系统","rule": "body=\"style/base/jw.css\"","program": ""},{"name": "UFIDA_NC","rule": "(body=\"UFIDA\" && body=\"logo/images/\") || body=\"logo/images/ufida_nc.png\"", "program": ""},{"name": "北创图书检索系统","rule": "body=\"opac_two\"","program": ""},{"name": "北京清科锐华CEMIS","rule": "body=\"/theme/2009/image\" && body=\"login.asp\"","program": ""},{"name": "RG-PowerCache内容加速系统","rule": "title=\"RG-PowerCache\"","program": ""},{"name": "sugon_gridview","rule": "body=\"/common/resources/images/common/app/gridview.ico\"","program": ""},{"name": "SLTM32_Configuration","rule": "title=\"SLTM32 Web Configuration Pages \"","program": ""},{"name": "SHOUTcast","rule": "title=\"SHOUTcast Administrator\"","program": ""},{"name": "milu_seotool","rule": "body=\"plugin.php?id=milu_seotool\"","program": ""},{"name": "CISCO_EPC3925","rule": "body=\"Docsis_system\" && body=\"EPC3925\"","program": ""},{"name": "HP_iLO(HP_Integrated_Lights-Out)","rule": "body=\"js/iLO.js\"","program": ""},{"name": "Siemens_SIMATIC","rule": "body=\"/S7Web.css\"","program": ""},{"name": "Schneider_Quantum_140NOE77101","rule": "body=\"indexLanguage\" && body=\"html/config.js\"","program": ""},{"name": "lynxspring_JENEsys","rule": "body=\"LX JENEsys\"","program": ""},{"name": "Sophos_Web_Appliance","rule": "title=\"Sophos Web 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fofa domain 语法
FOFA 是一个开源的网络搜索引擎，它使用自定义的语法来查询网络上的信息。

FOFA 的语法允许用户通过正则表达式和关键字来搜索网络上的信息，包括域名、IP 地址、端口号、URL 等。

FOFA 的基本语法如下：
1. 域名查询：使用 `domain` 关键字，后面跟上域名，例如 `domain `。

2. IP 地址查询：使用 `ip` 关键字，后面跟上 IP 地址，例如 `ip `。

3. 端口号查询：使用 `port` 关键字，后面跟上端口号，例如 `port 80`。

4. URL 查询：使用 `url` 关键字，后面跟上 URL，例如 `url
5. 正则表达式查询：使用 `/` 符号开头和结尾，中间是正则表达式，例如`/example/i`。

除了以上基本语法外，FOFA 还支持一些高级语法，例如使用 `-` 符号排除某个关键词或条件，使用 `` 符号表示或关系等。

需要注意的是，FOFA 的语法可能会随着版本的更新而发生变化，因此建议查阅官方文档或使用帮助命令来获取最新语法信息。

正则表达式详解正则表达式1．什么是正则表达式简单的说，正则表达式是一种可以用于文字模式匹配和替换的强有力的工具。

是由一系列普通字符和特殊字符组成的能明确描述文本字符串的文字匹配模式。

正则表达式并非一门专用语言，但也可以看作是一种语言，它可以让用户通过使用一系列普通字符和特殊字符构建能明确描述文本字符串的匹配模式。

除了简单描述这些模式之外，正则表达式解释引擎通常可用于遍历匹配，并使用模式作为分隔符来将字符串解析为子字符串，或以智能方式替换文本或重新设置文本格式。

正则表达式为解决与文本处理有关的许多常见任务提供了有效而简捷的方式。

正则表达式具有两种标准：·基本的正则表达式(BRE –Basic Regular Expressions)·扩展的正则表达式(ERE – Extended Regular Expressions)。

ERE包括BRE功能和另外其它的概念。

正则表达式目前有两种解释引擎：·基于字符驱动(text-directed engine)·基于正则表达式驱动(regex-directed engine)Jeffery Friedl把它们称作DFA和NFA解释引擎。

约定：为了描述起来方便，在本文中做一些约定：1.本文所举例的所有表达时都是基于NFA解释引擎的。

2.正则表达式，也就是匹配模式，会简写为Regex。

3. Regex的匹配目标，也就是目标字符串，会简写为String。

4.匹配结果用会用黄色底色标识。

5.用1\+1=2 括起来的表示这是一个regex。

6.举例会用以下格式：testThis is a test会匹配test，testcase等2．正则表达式的起源正则表达式的”祖先”可以一直上溯至对人类神经系统如何工作的早期研究。

Warren McCulloch 和 Walter Pitts 这两位神经生理学家研究出一种数学方式来描述这些神经网络。

fofa使用方法FOFA使用方法FOFA（Find Openly Accessible Database）是一款基于搜索引擎的网络空间搜索引擎，它可以帮助用户快速地搜索到互联网上的各种设备、服务和应用程序。

FOFA的搜索结果包括IP地址、端口、协议、服务、操作系统、Web应用程序等信息，可以帮助用户快速地了解目标网络的情况，从而进行安全评估、漏洞扫描、渗透测试等工作。

本文将介绍FOFA的使用方法，帮助用户快速地掌握这款工具的使用技巧。

一、注册账号用户需要注册一个FOFA的账号，才能使用这款工具。

注册账号的步骤如下：1. 打开FOFA的官方网站（https://fofa.so/）。

2. 点击右上角的“注册”按钮，进入注册页面。

3. 输入邮箱地址和密码，点击“注册”按钮。

4. 在邮箱中查收FOFA发送的验证邮件，并点击邮件中的链接进行验证。

5. 验证成功后，即可登录FOFA的控制台。

二、使用搜索语法FOFA的搜索语法类似于Google的搜索语法，用户可以使用各种关键词和运算符来组合搜索条件，从而精确地搜索目标信息。

下面是一些常用的搜索语法：1. 搜索IP地址使用“ip:”关键词可以搜索指定的IP地址。

例如，搜索所有以192.168.1开头的IP地址，可以使用如下语法：ip:"192.168.1.*"2. 搜索端口使用“port:”关键词可以搜索指定的端口。

例如，搜索所有开放了80端口的主机，可以使用如下语法：port:"80"3. 搜索协议使用“protocol:”关键词可以搜索指定的协议。

例如，搜索所有使用HTTP协议的主机，可以使用如下语法：protocol:"http"4. 搜索服务使用“service:”关键词可以搜索指定的服务。

例如，搜索所有使用Apache服务的主机，可以使用如下语法：service:"Apache"5. 搜索操作系统使用“os:”关键词可以搜索指定的操作系统。