功能
- 统计Top 20 地址
- SQL注入分析
- SQL from查询统计
- 常见扫描器、黑客工具分析
- 漏洞利用检测
- 敏感路径访问
- Webshell
- HTTP Tunnel
- 寻找响应长度的url Top 20
- 寻找罕见的脚本文件访问
- 寻找302跳转的脚本文件
- 二次验证，判断状态吗与url后缀排除静态资源（png/css/js/pdf/jpg等url后缀）
Usage
设置报告保存地址 outfile=/tmp/logs 设置日志分析目录 access_dir=/var/log/nginx/ 设置日志名称 access_log=access chmod u+x ./nginx_check.sh./nginx_check.sh
代码
#!/usr/bin/env bash
echo ""
echo " ========================================================= "
echo " Nginx日志安全分析脚本 V1.0 / "
echo " ========================================================= "
echo " # 支持Nginx日志分析，攻击告警分析等 "
echo " # author：al0ne "
echo " # https://github.com/al0ne "
echo -e "n"
#此脚本是参考nmgxy/klionsec修改而来,重新添加了一些特征，只用来临时救急，还是推荐到ELK或者Splunk中分析
#功能
###统计Top 20 地址
###SQL注入分析
###SQL注入 FROM查询统计
###扫描器/常用黑客工具
###漏洞利用检测
###敏感路径访问
###文件包含攻击
###HTTP Tunnel
###Webshell
###寻找响应长度的url Top 20
###寻找罕见的脚本文件访问
###寻找302跳转的脚本文件
#如果存在多个access文件或者有多个access.x.gz 建议先zcat access*.gz >> access.log文件中
#设置分析结果存储目录,结尾不能加/
outfile=/tmp/logs
#如果目录以存在则清空，未存在则新建目录
if [ -d $outfile ]; then
rm -rf $outfile/*
else
mkdir -p $outfile
fi
#设置nginx日志目录，结尾必须加/
access_dir=/var/log/nginx/
#设置文件名，如果文件名为access那么匹配的是access*文件
access_log=access
#判断日志文件是否存在
num=$(ls ${access_dir}${access_log}* | wc -l) >/dev/null 2>&1
if [ $num -eq 0 ]; then
echo '日志文件不存在'
exit 1
fi
echo -e "n"
# 验证操作系统是debian系还是centos
OS='None'
if [ -e "/etc/os-release" ]; then
source /etc/os-release
case ${ID} in
"debian" | "ubuntu" | "devuan")
OS='Debian'
;;
"centos" | "rhel fedora" | "rhel")
OS='Centos'
;;
*) ;;
esac
fi
if [ $OS = 'None' ]; then
if command -v apt-get >/dev/null 2>&1; then
OS='Debian'
elif command -v yum >/dev/null 2>&1; then
OS='Centos'
else
echo -e "n不支持这个系统n"
echo -e "已退出"
exit 1
fi
fi
# 检测ag软件有没有安装
if ag -V >/dev/null 2>&1; then
echo -e "e[00;32msilversearcher-ag已安装 e[00m"
else
if [ $OS = 'Centos' ]; then
yum -y install the_silver_searcher >/dev/null 2>&1
else
apt-get -y install silversearcher-ag >/dev/null 2>&1
fi
fi
#如果检测别的日志请手动替换偏移，例如awk的$7代表url，$9代表状态码，$10代表长度,本脚本是以nginx日志为基础
echo "分析结果日志：${outfile}"
echo "Nginx日志目录：${access_dir}"
echo "Nginx文件名：${access_log}"
echo -e "n"
echo -e "e[00;31m[+]TOP 20 IP 地址e[00m"
ag -a -o --nofilename 'd+.d+.d+.d+' ${access_dir}${access_log}* | sort | uniq -c | sort -nr | head -n 20 | tee -a ${outfile}/top20.log
echo -e "n"
echo -e "e[00;31m[+]SQL注入攻击分析e[00m"
#在SQL注入中排除掉了一些扫描css/js/png图片类等无用告警，并且重点筛选状态码200或者500的告警
ag -a "xp_cmdshell|%20xor|%20and|%20AND|%20or|%20OR|select%20|%20and%201=1|%20and%201=2|%20from|%27exec|information_schema.tables|load_file|benchmark|substring|table_name|table_schema|%20where%20|%20union%20|%20UNION%20|concat(|concat_ws(|%20group%20|0x5f|0x7e|0x7c|0x27|%20limit|bcurrent_userb|%20LIMIT|version%28|version(|database%28|database(|user%28|user(|%20extractvalue|%updatexml|rand(0)*2|%20group%20by%20x|%20NULL%2C|sqlmap" ${access_dir}${access_log}* | ag -v '/w+.(?:js|css|html|jpg|jpeg|png|htm|swf)(?:?| )' | awk '($9==200)||($9==500) {print $0}' >${outfile}/sql.log
awk '{print "SQL注入攻击" NR"次"}' ${outfile}/sql.log | tail -n1
echo "SQL注入 TOP 20 IP地址"
ag -o '(?<=:)d+.d+.d+.d+' ${outfile}/sql.log | sort | uniq -c | sort -nr | head -n 20 | tee -a ${outfile}/sql_top20.log
# 重点关注from查询，是否存在脱裤行为，排除扫描行为
echo "SQL注入 FROM 查询"
cat ${outfile}/sql.log | ag 'bfromb' | ag -v 'information_schema' >${outfile}/sql_from_query.log
awk '{print "SQL注入FROM查询" NR"次"}' ${outfile}/sql_from_query.log | tail -n1
echo -e "n"
echo -e "e[00;31m[+]扫描器scan & 黑客工具e[00m"
ag -a "acunetix|by_wvs|nikto|netsparker|HP404|nsfocus|WebCruiser|owasp|nmap|nessus|HEAD /|AppScan|burpsuite|w3af|ZAP|openVAS|.+avij|.+angolin|360webscan|webscan|XSS@HERE|XSS%40HERE|NOSEC.JSky|wwwscan|wscan|antSword|WebVulnScan|WebInspect|ltx71|masscan|python-requests|Python-urllib|WinHttpRequest" ${access_dir}${access_log}* | ag -v '/w+.(?:js|css|jpg|jpeg|png|swf)(?:?| )' | awk '($9==200)||($9==500) {print $0}' >${outfile}/scan.log
awk '{print "共检测到扫描攻击" NR"次"}' ${outfile}/scan.log | tail -n1
echo "扫描工具流量 TOP 20"
ag -o '(?<=:)d+.d+.d+.d+' ${outfile}/scan.log | sort | uniq -c | sort -nr | head -n 20 | tee -a ${outfile}/scan_top20.log
echo -e "n"
echo -e "e[00;31m[+]敏感路径访问e[00m"
ag -a "/_cat/|/_config/|include=|phpinfo|info.php|/web-console|JMXInvokerServlet|/manager/html|axis2-admin|axis2-web|phpMyAdmin|phpmyadmin|/admin-console|/jmx-console|/console/|.tar.gz|.tar|.tar.xz|.xz|.zip|.rar|.mdb|.inc|.sql|/.configb|.bak|/.svn/|/.git/|.hg|.DS_Store|.htaccess|nginx.conf|.bash_history|/CVS/|.bak|wwwroot|备份|/Web.config|/web.config|/1.txt|/test.txt" ${access_dir}${access_log}* | awk '($9==200)||($9==500) {print $0}' >${outfile}/dir.log
awk '{print "共检测到针对敏感文件扫描" NR"次"}' ${outfile}/dir.log | tail -n1
echo "敏感文件访问流量 TOP 20"
ag -o '(?<=:)d+.d+.d+.d+' ${outfile}/dir.log | sort | uniq -c | sort -nr | head -n 20 | tee -a ${outfile}/dir_top20.log
echo -e "n"
echo -e "e[00;31m[+]漏洞利用检测e[00m"
ag -a "%00|/win.ini|/my.ini|../../|/etc/shadow|%0D%0A|file:/|gopher:/|dict:/|WindowsPowerShell|/wls-wsat/|call_user_func_array|uddiexplorer|@DEFAULT_MEMBER_ACCESS|@java.lang.Runtime|OgnlContext|/bin/bash|cmd.exe|wgets|curls|s=/index/think" ${access_dir}${access_log}* | awk '($9==200)||($9==500) {print $0}' >${outfile}/exploit.log
awk '{print "漏洞利用探测" NR"次"}' ${outfile}/exploit.log | tail -n1
echo "漏洞利用检测 TOP 20"
ag -o '(?<=:)d+.d+.d+.d+' ${outfile}/exploit.log | sort | uniq -c | sort -nr | head -n 20 | tee -a ${outfile}/exploit_top20.log
echo -e "n"
echo -e "e[00;31m[+]webshelle[00m"
ag -a "=whoami|dbname=|exec=|cmd=|br57b|bc99b|bc100b|bb374kb|adminer.php|eval(|assert(|%eval|%execute|tunnel.[asp|php|jsp|aspx]{3,4}|makewebtaski|ma.[asp|php|jsp|aspx]{3,4}|bup.[asp|php|jsp|aspx]{3,4}|cmd.[asp|php|jsp|aspx]{3,4}|201d.[asp|php|jsp|aspx]{3,4}|xiaoma.[asp|php|jsp|aspx]{3,4}|shell.[asp|php|jsp|aspx]{3,4}|404.[asp|php|jsp|aspx]{3,4}|tom.[asp|php|jsp|aspx]{3,4}|k8cmd.[asp|php|jsp|aspx]{3,4}|ver[0-9]{3,4}.[asp|php|jsp|aspx]{3,4}|.aar|[asp|php|jsp|aspx]{3,4}spy.|o=vLogin|aioshell|admine|ghost.[asp|php|jsp|aspx]{3,4}|r00ts|90sec|t00ls|editor.aspx|wso.[asp|aspx]{3,4}" ${access_dir}${access_log}* | awk '($9==200)||($9==500) {print $0}' >${outfile}/webshell.log
awk '{print "共检测到webshell行为" NR "次"}' ${outfile}/webshell.log | tail -n1
echo "Webshell TOP 20"
ag -o '(?<=:)d+.d+.d+.d+' ${outfile}/webshell.log | sort | uniq -c | sort -nr | head -n 20 | tee -a ${outfile}/webshell_top20.log
echo -e "n"
echo -e "e[00;31m[+]HTTP Tunnele[00m"
#Regeorg代理特征
ag -a "cmd=disconnect|cmd=read|cmd=forward|cmd=connect|127.0.0.1" ${access_dir}${access_log}* | awk '($9==200)||($9==500) {print $0}' | tee -a ${outfile}/tunnel.log
awk '{print "共检测到隧道行为" NR "次"}' ${outfile}/tunnel.log | tail -n1
echo -e "n"
echo -e "e[00;31m[+]Top 20 url响应长度e[00m"
# 查找url响应长度最长的url排序，目的是有没有下载服务器的一些打包文件
len=$(cat ${access_dir}${access_log}* | awk '{print $10}' | sort -nr | head -n 20)
echo $len | awk 'BEGIN{ RS=" " }{ print $0 }' | xargs -i{} ag -a --nocolor 'd+s{}s' ${access_dir}${access_log}* | awk '{print $7,$10}' | sort | uniq | sort -k 2 -nr | tee -a ${outfile}/url_rsp_len.log
echo -e "n"
echo -e "e[00;31m[+]罕见的脚本文件访问e[00m"
echo "访问量特别特别少的脚本文件极有可能是webshell"
cat ${access_dir}${access_log}* | awk '($9==200)||($9==500) {print $7}' | sort | uniq -c | sort -n | ag -v '?' | ag '.php|.jsp|.asp|.aspx' | head -n 20 | tee -a ${outfile}/rare_url.log
echo -e "n"
echo -e "e[00;31m[+]302跳转e[00m"
echo "此目的是寻找一些登录成功的脚本文件"
cat ${access_dir}${access_log}* | awk '($9==302)||($9==301) {print $7}' | sort | uniq -c | sort -n | ag -v '?' | ag '.php|.jsp|.asp|.aspx' | head -n 20 | tee -a ${outfile}/302_goto.log
echo -e "n"
参考
- nmgxy
- klionsec
原文地址:
