linux主机安全审计追溯分析脚本

Posted 2021-04-23 黑白之道

文章来源：安全先师

主要功能介绍：
1、非工作时间段是否有登录行为
2、当日是否有新建/登录失败纪录
3、指定监控目录是否有webshell文件
4、查看是否有新建非法用户
5、查看是否有外联异常端口
6、检测access日志，分析当天攻击行为

脚本：

#!/usr/bin/python# -*- coding: utf-8 -*-
import osimport sysimport re
TRUST_USER = ['root','piaox']TRUST_IP =['10.0.211.71']FILE_PATH=['/var/www/html','/tmp','/var/tmp','/home']FILE_LIST =[]ACCESS_LOG = '/var/log/httpd/access_log'php_Features_list = [ '(\$_(?:GET|POST|REQUEST)\[.*?](\s|\n)*\((\s|\n)*\$_(?:GET|POST|REQUEST)\[.*?\](\s|\n)*\))', '(?:base64_decode)\([\'"][\w\+/=]{200,}[\'"]\)', 'function\_exists\s*\(\s*[\'"](popen|exec|proc\_open|system|passthru)+[\'"]\s*\)', '@?(eval\_?r?|assert|include|require|include\_once|require\_once|array\_map|array\_walk)+\s*\(\s*\$\_(GET|POST|REQUEST|COOKIE|SERVER|SESSION)+\[?(.*)\]?\s*\)', 'eval\s*\(\s*\(\s*\$\$(\w+)', '(\$[\w_]{0,15}(\s|\n)*\((\s|\n)*\$_(?:POST|GET|REQUEST)\[.*?\](\s|\n)*\))', '(ReDuh|silic)', '(?:call_user_func)(\s|\n)*\(.{0,15}\$_(?:GET|POST|REQUEST)', '(?:wscript)\.(?:shell)', '(?:cmd)\.(?:exe)', '(?:shell)\.(?:application)', '(?:documents)\s+(?:and)\s+(?:settings)', '(?:system32)', '(?:serv\-u)', '(?:phpspy)', '(?:webshell)', '(?:Program)\s+(?:Files)', '(?:include|require)(?:_once)?\s*["\']?\(?\s*\$?\w+["\']?\)?\s*\;?', 'ec38fe2a8497e0a8d6d349b3533038cb|88f078ec861a3e4baeb858e1b4308ef0|7Zt/TBNnGMfflrqBFnaes|\\x50\\x4b\\x05\\x06\\x00\\x00\\x00\\x00|9c3a9720372fdfac053882f578e65846|silic1234', '((udp|tcp)\://(.*)\;)+', 'preg\_replace\s*\((.*)/e(.*)\,\s*\$\_\[?(.*)\]?\,(.*)\)', 'preg\_replace\s*\((.*)\(base64\_decode\(\$', '.*?\$\_\w+.*?@?preg_replace\(("|\').*?/e("|\'),.*?,.*?\)', '(eval|assert|include|require|include\_once|require\_once)+\s*\(\s*(base64\_decode|str\_rot13|gz(\w+)|file\_(\w+)\_contents|(.*)php\://input)+', '(include|require|include\_once|require\_once)+\s*\(\s*[\'"](\w+)\.(jpg|gif|ico|bmp|png|txt|zip|rar|htm|css|js)+[\'"]\s*\)', '\$\_(\w+)\s*=?\s*(eval|assert|include|require|include\_once|require\_once)+\s*\(\s*\$(\w+)\s*\)', '\(\s*\$\_FILES\[(.*)\]\[(.*)\]\s*\,\s*\$\_(GET|POST|REQUEST|FILES)+\[(.*)\]\[(.*)\]\s*\)', '(fopen|fwrite|fputs|file\_put\_contents)+\s*\((.*)\$\_(GET|POST|REQUEST|COOKIE|SERVER)+\[(.*)\](.*)\)', '(fopen|fwrite|fputs|file\_put\_contents)+\s*\(\$\_(GET|POST|REQUEST|COOKIE|SERVER)+\[(.*)\](.*)\)', 'echo\s*curl\_exec\s*\(\s*\$(\w+)\s*\)', 'new com\s*\(\s*[\'"]shell(.*)[\'"]\s*\)', '\$(.*)\s*\((.*)\/e(.*)\,\s*\$\_(.*)\,(.*)\)', '\$\_\=(.*)\$\_', '\$\_(GET|POST|REQUEST|COOKIE|SERVER)+\[(.*)\]\(\s*\$(.*)\)', '\$(\w+)\s*\(\s*\$\_(GET|POST|REQUEST|COOKIE|SERVER)+\[(.*)\]\s*\)', '\$(\w+)\s*\(\s*\$\{(.*)\}', '\$(\w+)\s*\(\s*chr\(\d+\)', '\$\w*\s*\=\s*\$\_(GET|POST|REQUEST|COOKIE|SERVER|SESSION)\[.*?\]\;\s*include\s+\(\s*\$(.*?)\s*\)\;', '\$\w+\s*\=\s*\$\_\w+\[.*?\]\;\s*@eval\(.*?\)', '\$\w+\s*\=\s*base64_decode\(\$\_\w+\[(.*?)\]\);\s*@eval\(.*?\)', '\$\_\w+\[.*?\]\s*\(\s*\$\_\w+\[.*?\]\s*\)\;', '\(\$\_\=@\$\_\w+\[.*?\]\s*\)\.@\$\_\(\$\_\w+\[.*?\]\s*\)', '\$\_\w+\[.*?\]\s*\(\s*\$\_\w+\[.*?\]\s*,\$\_\w+\[.*?\]\)', '\$\{\'\_\'.\$\_}\[\'\_\'\]\(\$\{\'\_\'.\$\_\}\[\'\_\_\'\]\)\;', '\_\_angel\_1111111111\_eof\_\_', 'xx.php\?pwd=e', '687474703a2f2f377368656c6c2e676f6f676c65636f64652e636f6d2f73766e2f6d616b652e6a7067', 'Changed by pnkoo.cn|Jakub Vrana|blackbap.org|Code By isosky|16jTwyAtIHBocCZNeVNRTMr9vt2/4rG4t925pL7fIC0g']
asp_Features_list = [ '(?:eval|execute)(\s|\n)*(?:request)(\s|\n)*\((\s|\n)*(.*?)(\s|\n)*\)', '(?:eval)(\s|\n)*\((\s|\n)*(?:Request)(\s|\n)*\.(\s|\n)*(?:Item)(\s|\n)*\[(\s|\n)*(.*?)(\s|\n)*\]', '(?:ExecuteStatement)\(.*?request', 'FromBase64String\("UmVxdWVzdC5JdGVtWyJ6Il0="\)', 'tseuqer\s*lave.*', 'Request.form(.*)eval(.*)', '<SCRIPT\s*RUNAT=SERVER\s*LANGUAGE=javascript>(.*)eval', 'reDuh(.*)', 'PublicKeyToken\=B03F5F7F11D50A3A', '20132165414621325641311254123112512', '#@~\^oHMBAA==@#@&@#@&"\+kwW', '(Client/Login\.xml\?Command=Login&Sync=1227081437828)|(因为serv-u的userid变化我搞不懂)', 'aspmuma|(免杀去后门版\s*by\s*UnKnown)', '芝麻开门|F4ck|1c1f81a8b0a630f530f52fa9aa9dda1b|法客论坛|F4ckTeam', 'silicname|silicpass|命令行执行', 'server.mappath\("go.asp"\)', 'MSSQL语句执行工具', 'gif89a(\s|\n)*<%@?', 'UJ@!z\(G9X@\*@!z4Y:\^@\*ryglpAA==\^#~@', 'clsid:72C24DD5-D70A-438B-8A42-98424B88AFB8', 'WebSniff(.*?)Powered\s*by', '11\.asp', 'mssql导库|闪电小子|\_tysan|mysql Manager', '#@~\^bGsBAA==@#@&AC13`DV{J@!8D@\*@!8D@\*@!\^n']
jsp_Features_list = [ 'reDuh', '没有权限执行该操作', '(chopper|QQ\(cs,z1,z2,sb\)|caicaihk|Alanwalker|(by\s*n1nty)|(Code\s*By\s*Ninty)|JspSpyPwd|JspSpy|6625108|(charles\s*QQ\s*77707777))', '((21,25,80,110,1433,1723,3306,3389,4899,5631,43958,65500)|(192.168.230.1\s*4444))', '1decc1ce886d1b2f9f91ecb39967832d05f8e8b8', 'JFolder\.jsp|Steven\s*Cee|JFileMan\.jsp|hack520\s*by|mailto\:hack520@77169\.org|by\s*Bagheera|luoluonet|Recoding\s*by\s*Juliet|lovehacker|webshell\.jsp|Hacker|jsp\s*File\s*Browser|jshell|ceshi2009']
other_Features_list = ['System32\\cmd\.exe|cmd|CFM\s*shell', '俺的门门', 'Gamma Web Shell']
attack__Features_list = {"\.\./":"目录穿越攻击", "select.+(from|limit)":"SQL注入攻击", "(?:(union(.*?)select))":"SQL注入攻击", "having|rongjitest":"SQL注入攻击", "sleep\((\s*)(\d*)(\s*)\)":"SQL注入攻击", "benchmark\((.*)\,(.*)\)":"SQL注入攻击", "base64_decode\(":"SQL注入攻击", "(?:from\W+information_schema\W)":"SQL注入攻击", "(?:(?:current_)user|database|schema|connection_id)\s*\(":"SQL注入攻击", "(?:etc\/\W*passwd)":"敏感文件操作", "into(\s+)+(?:dump|out)file\s*":"SQL注入攻击", "group\s+by.+\(":"SQL注入攻击", "xwork.MethodAccessor":"命令注入攻击", "xwork\.MethodAccessor":"命令注入攻击", "(gopher|doc|php|glob|file|phar|zlib|ftp|ldap|dict|ogg|data)\:\/":"敏感文件操作", "\<(iframe|script|body|img|layer|div|meta|style|base|object|input)":"XSS跨站脚本", "(alert|confirm|prompt)":"XSS跨站脚本", "(onmouseover|onerror|onload)\=":"XSS跨站脚本", "java\.lang":"命令注入攻击", "\.(svn|htaccess|bash_history)":"敏感文件访问", "\.(bak|inc|old|mdb|sql|backup|java|class)$":"敏感文件访问", "(vhost|bbs|host|wwwroot|www|site|root|hytop|flashfxp).*\.rar":"敏感文件访问", "(phpmyadmin|jmx-console|jmxinvokerservlet)":"管理控制台探测行为", "/(attachments|upimg|images|css|uploadfiles|html|uploads|templets|static|template|data|inc|forumdata|upload|includes|cache|avatar)/(\\w+).(php|jsp)":"敏感文件访问", "(HTTrack|harvest|audit|dirbuster|pangolin|nmap|sqln|-scan|hydra|Parser|libwww|BBBike|sqlmap|w3af|owasp|Nikto|fimap|havij|PycURL|zmeu|BabyKrokodil|netsparker|httperf|bench| SF/)":"Web扫描器扫描" }
def Un_worktime_login(localday): if os.popen("last |grep -v 'reboot' |grep " + "'" + localday.strip() + "'" + "|awk '($7>=\"12:00\" && $7<=\"14:00\") || ($7>=\"00:00\" && $7<=\"06:00\")'").readlines(): print '[+] Un_worktime_login ------------------------------------ [ DONE ]' for bb in os.popen("last |grep -v 'reboot' |grep " + "'" + localday.strip() + "'" + "|awk '($7>=\"12:00\" && $7<=\"14:00\") || ($7>=\"00:00\" && $7<=\"06:00\")'").readlines(): print bb.strip() return True else: return False
def Faild_user(localday): print '\n[+] Faild_user ------------------------------------ [ DONE ]' os.system("egrep '(new user: name=)|(Failed password for)' /var/log/secure*|grep " + "'" + localday + "'")
def Un_trust_user(): all_user = os.popen("grep '/bin/bash' /etc/passwd | awk -F ':' '{print $1}'").readlines() print '\n[+] Un_trust_user ------------------------------------ [ DONE ]' for l in all_user: if l.strip() not in TRUST_USER: os.system("grep "+l.strip()+" /etc/passwd")
def Dubious_netstat(): print '\n[+] Dubious_netstat ------------------------------------ [ DONE ]' for ip in TRUST_IP: os.system("netstat -antp|egrep -v ':::*' |egrep 'ESTABLISHED|LISTEN'|awk '$5 !~ /"+ip.strip()+"/' | awk '$5 ~/:(21|22|443|80|8080|7001|8443|9080)$/{print}'")
def Dubious_files(filepath): for f in os.listdir(filepath): path = os.path.join(filepath, f) if os.path.isfile(path): FILE_LIST.append(path) if os.path.isdir(path): Dubious_files(path)
def Webshell_detect(filename,rulename): f1 = open(filename).read() for rule in rulename: result = re.compile(rule).findall(f1) if result: print "============================================" print 'Risk file:' + filename print 'Risk code：' + str(result[0]) os.system("stat " +str(filename)+ " |grep 'Modify'")
def Attack_analysis(): f2 = open(ACCESS_LOG).readlines() print "\n[+] Attack_analysis ------------------------------------ [ DONE ]" for line in f2: for r in attack__Features_list: result = re.compile(r).findall(line) if result: print '匹配特征：' + '[' + str(result[0]) + ']' + '===>' + line.strip() print '攻击类型:' + '[' + attack__Features_list[r] + ']'
if __name__=='__main__': localday = os.popen("env LANG=en_US.UTF-8 date |awk '{print $2,$3}'").readline().strip() Un_worktime_login(localday) Faild_user(localday) Un_trust_user() Dubious_netstat() for file in FILE_PATH: Dubious_files(file.strip()) print '\n[+] Webshell_detect ------------------------------------ [ DONE ]' for f in FILE_LIST: if str(f).lower().endswith(".php"): Webshell_detect(f, php_Features_list) elif str(f).lower().endswith(".jsp"): Webshell_detect(f, jsp_Features_list) elif str(f).lower().endswith(".aspx"): Webshell_detect(f, asp_Features_list) Attack_analysis()