Linux系统下查找webshell后门的强大命令

 一句话查找PHP木马

 # find ./ -name "*.php" |xargs egrep "phpspy|c99sh|milw0rm|eval(gunerpress|eval(base64_decoolcode|spider_bc))" > /tmp/php.txt

 # grep -r --include=*.php  '[^a-z]eval($_POST' . > /tmp/eval.txt

# grep -r --include=*.php  'file_put_contents(.*$_POST[.*]);' . > /tmp/file_put_contents.txt

 # find ./ -name "*.php" -type f -print0 | xargs -0 egrep "(phpspy|c99sh|milw0rm|eval(gzuncompress(base64_decoolcode|eval(base64_decoolcode|spider_bc|gzinflate)" | awk -F: '{print $1}' | sort | uniq

查找最近一天被修改的PHP文件

 #   find -mtime -1 -type f -name *.php

修改网站的权限

# find -type f -name *.php -exec chmod 444 {} ;

# find ./ -type d -exec chmod 555{} ;