详解PHP代码执行漏洞--无字母shell

贤鱼不闲发布时间：2022-09-08 22:21:49 ，浏览量：3

代码执行漏洞无字母shell

或运算
异或运算

题目如下在这里插入图片描述很明显，这道题过滤了所有的字母和数字具体应该怎么做呢？可以利用位操作符凭借可显示字符（本题的原理）这么说一头雾水对么？下面来看看具体过程

或运算

这里的脚本分为了两个部分，一个是根据题目要求制作出符合题目的拼接可显示字符，另一个就是负责拼接 rce.php（制作出题目要求字符）


    
        
        
        
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	请求信息 : 2025-04-22 01:54:33 HTTP/2.0 GET : /home/article/detail/id/433280.html
运行时间 : 0.0424s ( Load:0.0103s Init:0.0010s Exec:0.0212s Template:0.0099s )
吞吐率 : 23.58req/s
内存开销 : 1,942.05 kb
查询信息 : 18 queries 0 writes 
文件加载 : 36
缓存信息 : 5 gets 0 writes 
配置加载 : 132
会话信息 : SESSION_ID=b7qhdq6k4bl6r93suf646nc93h
    
    
        
    
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/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.27 KB )
    
    
        
    
	[ app_init ] --START--
Run Behavior\BuildLiteBehavior [ RunTime:0.000009s ]
[ app_init ] --END-- [ RunTime:0.000040s ]
[ app_begin ] --START--
Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000385s ]
[ app_begin ] --END-- [ RunTime:0.000405s ]
[ view_parse ] --START--
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Run Behavior\ContentReplaceBehavior [ RunTime:0.000077s ]
[ template_filter ] --END-- [ RunTime:0.000108s ]
Run Behavior\ParseTemplateBehavior [ RunTime:0.007758s ]
[ view_parse ] --END-- [ RunTime:0.007781s ]
[ view_filter ] --START--
Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000166s ]
[ view_filter ] --END-- [ RunTime:0.000179s ]
[ app_end ] --START--
    
    
        
    
	[2] session_save_path(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s): (/www/wwwroot/www.chaojiit.com/:/tmp/) /www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php 第 1239 行.
[8192] Array and string offset access syntax with curly braces is deprecated /www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 59 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 34 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 134 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 134 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 135 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 135 行.
[8] Undefined variable: pinglun_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 144 行.
[8] Undefined variable: top_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 179 行.
    
    
        
    
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SELECT * FROM `menu` WHERE `fid` = 0 AND `status` = 1  [ RunTime:0.0001s ]
SELECT * FROM `menu` WHERE `fid` = 1 AND `status` = 1  [ RunTime:0.0001s ]
SELECT * FROM `menu` WHERE `fid` = 2 AND `status` = 1  [ RunTime:0.0001s ]
SELECT * FROM `menu` WHERE `fid` = 3 AND `status` = 1  [ RunTime:0.0001s ]
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SHOW COLUMNS FROM `bloger` [ RunTime:0.0002s ]
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SELECT COUNT(*) AS tp_count FROM `article` WHERE `bloger_id` = 772 LIMIT 1   [ RunTime:0.0001s ]
SHOW COLUMNS FROM `article_content` [ RunTime:0.0002s ]
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SHOW COLUMNS FROM `article_cate` [ RunTime:0.0003s ]
SELECT `name` FROM `article_cate` WHERE `id` = 111 LIMIT 1   [ RunTime:0.0001s ]
SELECT * FROM `article` WHERE `bloger_id` = 772 ORDER BY view_count desc LIMIT 0,10   [ RunTime:0.0006s ]
    
    
        
    
	    
    
    



0.0424s