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<ol class="chapter"><li class="chapter-item expanded "><a href="index.html"><strong aria-hidden="true">1.</strong> index</a></li><li class="chapter-item expanded affix "><li class="part-title">Cryptography</li><li class="chapter-item expanded "><a href="caesar_salad.html"><strong aria-hidden="true">2.</strong> Caesar Salad</a></li><li class="chapter-item expanded "><a href="xor_everything.html"><strong aria-hidden="true">3.</strong> XOR everything, shouldn't you?</a></li><li class="chapter-item expanded "><a href="im_committed.html"><strong aria-hidden="true">4.</strong> I'm committed, or am I?</a></li><li class="chapter-item expanded "><a href="ascii_wonders.html"><strong aria-hidden="true">5.</strong> ASCII Wonders!</a></li><li class="chapter-item expanded "><a href="xor_encryption.html"><strong aria-hidden="true">6.</strong> XOR Encryption</a></li><li class="chapter-item expanded "><a href="the_two_columns.html"><strong aria-hidden="true">7.</strong> The Two Columns</a></li><li class="chapter-item expanded "><a href="a_different_one.html"><strong aria-hidden="true">8.</strong> A different one</a></li><li class="chapter-item expanded "><a href="a_tough_nut.html"><strong aria-hidden="true">9.</strong> A tough nut</a></li><li class="chapter-item expanded affix "><li class="part-title">Forensics</li><li class="chapter-item expanded "><a href="random_file.html"><strong aria-hidden="true">10.</strong> Random file</a></li><li class="chapter-item expanded "><a href="jpeg_image.html"><strong aria-hidden="true">11.</strong> JPEG Image</a></li><li class="chapter-item expanded "><a href="file_size.html"><strong aria-hidden="true">12.</strong> File Size</a></li><li class="chapter-item expanded "><a href="really_a_text_file.html"><strong aria-hidden="true">13.</strong> Really a Text File?</a></li><li class="chapter-item expanded "><a href="qr_mania.html" class="active"><strong aria-hidden="true">14.</strong> QR Mania</a></li><li class="chapter-item expanded affix "><li class="part-title">Misc</li><li class="chapter-item expanded "><a href="atm.html"><strong aria-hidden="true">15.</strong> ATM</a></li><li class="chapter-item expanded "><a href="beat_the_system.html"><strong aria-hidden="true">16.</strong> Beat the System</a></li><li class="chapter-item expanded affix "><li class="part-title">Web Exp</li><li class="chapter-item expanded "><a href="chall_1.html"><strong aria-hidden="true">17.</strong> Challenge 1</a></li><li class="chapter-item expanded "><a href="chall_2.html"><strong aria-hidden="true">18.</strong> Challenge 2</a></li><li class="chapter-item expanded "><a href="chall_3.html"><strong aria-hidden="true">19.</strong> Challenge 3</a></li><li class="chapter-item expanded "><a href="chall_4.html"><strong aria-hidden="true">20.</strong> Challenge 4</a></li></ol>
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<h1 id="qr-mania"><a class="header" href="#qr-mania">QR Mania</a></h1>
<p>Scan the QR code to get the first half of the flag. The second half of the flag is hidden in the image bytes. This can be noticed by the fact that the size of the QR code is very large (almost 6.6 MB).</p>
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