正则表达式常识及正则靶场题目解析

<ul><li><a href="#JavaScript正则表达式知识点">JavaScript正则表达式知识点</a></li><li><a href="#题目内容">题目内容</a></li><li><a href="#题目的意思">题目的意思</a></li><li><a href="#解题思路">解题思路</a></li><li><a href="#答案可以是如下结果">答案可以是如下结果</a></li><li><a href="#flag">flag</a><ul></ul></li></ul><h4><a name="JavaScript正则表达式知识点"></a><span></span>JavaScript正则表达式知识点</h4><pre><ol><li><code><span>（</span><span>1</span><span>）修饰符</span></code></li><li><code><span>    i</span><span>————执行对大小写不敏感的匹配。</span></code></li><li><code><span>    g</span><span>————执行全局匹配（查找所有匹配而非在找到第一个匹配后停止）。</span></code></li><li><code><span>    m</span><span>————执行多行匹配。</span></code></li><li><code><span>（</span><span>2</span><span>）括号()[]{}：用于查找一定范围的字符串</span></code></li><li><code><span>    </span><span>(</span><span>x</span><span>|</span><span>y</span><span>)————匹配圆括号之间的</span><span>x</span><span>或</span><span>y</span></code></li><li><code><span>    </span><span>[</span><span>abc</span><span>]————匹配方括号之间的任意字符</span></code></li><li><code><span>    </span><span>[</span><span>0</span><span>-</span><span>9</span><span>]————匹配方括号之间</span><span>0</span><span>-</span><span>9</span><span>之内数字</span></code></li><li><code><span>    </span><span>[</span><span>a</span><span>-</span><span>zA</span><span>-</span><span>Z</span><span>]————匹配</span><span>26</span><span>个大小写英文字母</span></code></li><li><code><span>    </span><span>{</span><span>2</span><span>,</span><span>9</span><span>}————匹配前一字符至少</span><span>2</span><span>次，最多</span><span>9</span><span>次</span></code></li><li><code><span>    </span><span>{</span><span>3</span><span>}————匹配前一字符</span><span>3</span><span>次</span></code></li><li><code><span>（</span><span>3</span><span>）其他字符</span></code></li><li><code><span>    </span><span>.—————匹配任意字符</span><span>1</span><span>个</span></code></li><li><code><span>    </span><span>*————匹配前</span><span>1</span><span>个字符</span><span>0</span><span>个或多个</span></code></li><li><code><span>    </span><span>.*————匹配任意字符</span><span>0</span><span>个或多个</span></code></li><li><code><span>    \—</span><span>———转义后面的</span><span>1</span><span>个字符为普通字符</span></code></li></ol></pre><hr>
<h4><a name="题目内容"></a><span></span>题目内容</h4><pre><ol><li><code><span>&lt;?</span><span>php</span></code></li><li><code><span>$key</span><span>=</span><span>'flag{*****************************}'</span><span>;</span><span> $Regular</span><span>=</span><span> preg_match</span><span>(</span><span>"/zkaq.*key.{2,9}:\/.*\/(key*key)/i"</span><span>,</span><span> trim</span><span>(</span><span>$_GET</span><span>[</span><span>"id"</span><span>]),</span><span> $match</span><span>);</span></code></li><li><code><span>if</span><span>(</span><span> $Regular</span><span>){</span></code></li><li><code><span>  </span><span>die</span><span>(</span><span>'key: '</span><span>.</span><span>$key</span><span>);</span></code></li><li><code><span>}</span></code></li></ol></pre><hr>
<h4><a name="题目的意思"></a><span></span>题目的意思</h4><pre><ol><li><code><span>匹配</span><span>GET</span><span>的传参，并去掉字符串两侧的空白字符或其他预定义字符（</span><span>trim</span><span>），将匹配结果并赋值给</span><span>match</span><span>，再赋值给</span><span>Regular</span><span>；当</span><span>Regular</span><span>有值时，输出</span><span>key</span></code></li></ol></pre><hr>
<h4><a name="解题思路"></a><span></span>解题思路</h4><pre><ol><li><code><span>trim</span><span>————移除字符串两侧的空白字符或其他预定义字符</span></code></li><li><code><span>$_GET</span><span>[</span><span>"id"</span><span>]————获取</span><span>get</span><span>传入的</span><span>id</span><span>的值</span></code></li><li><code><span>/</span><span>zkaq</span><span>————斜杠表示此处之后是正则表达式，</span><span>zkaq</span><span>表示结果中含有</span><span>zkaq</span></code></li><li><code><span>.*————为通配符，可以代表任意字符，但不包括换行符。此处代表</span><span>0</span><span>个或多个任意字符</span></code></li><li><code><span>.{</span><span>2</span><span>,</span><span>9</span><span>}————.为通配符，代表任意一个字符，｛｝为限定符，</span><span> </span><span>.{</span><span>2</span><span>,</span><span>9</span><span>}代表任意</span><span>2</span><span>-</span><span>9</span><span>个任意字符</span></code></li><li><code><span>:————为普通字符，代表结果中含有：</span></code></li><li><code><span>\/</span><span>————反斜杠为转义字符，作用是将第二个字符/转变成普通字符解释</span></code></li><li><code><span>.*————为通配符，同上</span></code></li><li><code><span>\/</span><span>————反斜杠为转义字符，同上</span></code></li><li><code><span>(</span><span>key</span><span>*</span><span>key</span><span>)————（）代表括号内部为一个整体，*代表匹配前一个字符</span><span>0</span><span>次或者多次</span></code></li><li><code><span>/</span><span>i</span><span>————表示不区分大小写</span></code></li></ol></pre><hr>
<h4><a name="答案可以是如下结果"></a><span></span>答案可以是如下结果</h4><pre><ol><li><code><span>id</span><span>=</span><span>zkaqkEYoo</span><span>:</span><span>//kekey</span></code></li><li><code><span>id</span><span>=</span><span>zkaqkEYoo</span><span>:</span><span>//kEkeY</span></code></li><li><code><span>id</span><span>=</span><span>zkaqkEYoo</span><span>:</span><span>/0123456789/</span><span>kEkeY</span></code></li><li><code><span>id</span><span>=</span><span>zkaqkEY123456789</span><span>:</span><span>/0123456789/</span><span>kEkeY</span></code></li><li><code><span>id</span><span>=</span><span>zkaqkEY123456789</span><span>:</span><span>/0123456789/</span><span>kEkeY</span></code></li><li><code><span>id</span><span>=</span><span>zkaqkEY123456789</span><span>:</span><span>/0123456789/</span><span>kEkeY</span></code></li></ol></pre><hr>
<h4><a name="flag"></a><span></span>flag</h4><pre><ol><li><code><span>key</span><span>:</span><span> flag</span><span>{</span><span>regular\_god\_code</span><span>}</span></code></li></ol></pre>