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  <author_name>hamayanhamayan</author_name>
  <author_url>https://blog.hatena.ne.jp/hamayanhamayan/</author_url>
  <blog_title>はまやんはまやんはまやん</blog_title>
  <blog_url>https://blog.hamayanhamayan.com/</blog_url>
  <categories>
    <anon>Security</anon>
  </categories>
  <description>[web] perling_perler [web] Shortnm [web] iwi_deco_demo 解けず [crypto] Unnecessary Thing [web] perling_perler perl perlで出来たサイトが与えられる。環境変数にフラグが置いてある。ソースコードの重要な部分は以下。 post '/echo' =&gt; sub { my $str = body_parameters-&gt;get('str'); unless (defined $str) { return &quot;No input provided&quot;; } if ($str =~ /[&amp;;&lt;&gt;|\(\)…</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2025-05-24 17:01:42</published>
  <title>TSG LIVE! 14 CTF Writeup</title>
  <type>rich</type>
  <url>https://blog.hamayanhamayan.com/entry/2025/05/24/170142</url>
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