<p>Website: <a target="_blank" href="https://ctf.hacktivitycon.com/">https://ctf.hacktivitycon.com/</a></p>
<h3 id="heading-problems">Problems</h3>
<ol>
<li>Read The Rules
Answer: Check the page source code.<pre><code class="lang-text">flag{90bc54705794a62015369fd8e86e557b}
</code></pre>
</li>
</ol>
<hr />
<ol>
<li>Six Four Over Two
Answer: 64/2 = 32. Decode by Base32.<pre><code class="lang-text">flag{a45d4e70bfc407645185dd9114f9c0ef}
</code></pre>
</li>
</ol>
<hr />
<ol>
<li>Bass64
Answer: It's an ASCII art. Decrease font size to get the string. Then Base64 decode it.<pre><code class="lang-text">string: IGZsYWd7MzVhNWQxM2RhNmEyYWZhMGM2MmJmY2JkZDYzMDFhMGF9
flag{35a5d13da6a2afa0c62bfcbdd6301a0a}
</code></pre>
</li>
</ol>
<hr />
<ol>
<li>Pimple</li>
</ol>
<p>Answer: Since it's a GIMP file, open it using GIMP. Keep browsing the image, get the flag eventually.</p>
<pre><code class="lang-text">flag{9a64bc4a390cb0ce31452820ee562c3f}
</code></pre>
<p>Lol, I only solved three. Should have come with more preparation. GG.</p>


Website: [https://ctf.hacktivitycon.com/](https://ctf.hacktivitycon.com/)

### Problems

1. Read The Rules
Answer: Check the page source code.
```text
flag{90bc54705794a62015369fd8e86e557b}
```
---

2. Six Four Over Two
Answer: 64/2 = 32. Decode by Base32.
```text
flag{a45d4e70bfc407645185dd9114f9c0ef}
```
---

3. Bass64
Answer: It's an ASCII art. Decrease font size to get the string. Then Base64 decode it.
```text
string: IGZsYWd7MzVhNWQxM2RhNmEyYWZhMGM2MmJmY2JkZDYzMDFhMGF9
flag{35a5d13da6a2afa0c62bfcbdd6301a0a}
```
---

4. Pimple

Answer: Since it's a GIMP file, open it using GIMP. Keep browsing the image, get the flag eventually.
```text
flag{9a64bc4a390cb0ce31452820ee562c3f}
```

Lol, I only solved three. Should have come with more preparation. GG.


CTF H@cktivitycon 2021

by HackerOne

Problems