<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="3.10.0">Jekyll</generator><link href="https://vishnuram1999.github.io/feed.xml" rel="self" type="application/atom+xml" /><link href="https://vishnuram1999.github.io/" rel="alternate" type="text/html" /><updated>2026-10-04T10:38:37+00:00</updated><id>https://vishnuram1999.github.io/feed.xml</id><title type="html">viking71</title><subtitle>Vishnuram Rajkumar — Blockchain Engineer and Security Researcher. Smart contract audits, cybersecurity research, and CTF writeups.</subtitle><entry><title type="html">QuillAudit CTF challenges — Writeup</title><link href="https://vishnuram1999.github.io/smartcontractsecurity/ethereum/2023/01/14/QuillAudit-CTF-challenges-Writeup.html" rel="alternate" type="text/html" title="QuillAudit CTF challenges — Writeup" /><published>2023-01-14T00:00:00+00:00</published><updated>2023-01-14T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/smartcontractsecurity/ethereum/2023/01/14/QuillAudit-CTF-challenges-Writeup</id><content type="html" xml:base="https://vishnuram1999.github.io/smartcontractsecurity/ethereum/2023/01/14/QuillAudit-CTF-challenges-Writeup.html"><![CDATA[<h1 id="quillaudit-ctf-challenges--writeup">QuillAudit CTF challenges — Writeup</h1>

<p>You can find the writeup below for QuillAudit CTF challenges.</p>

<p><a href="https://viking71.medium.com/quillaudit-ctf-challenges-writeups-fd5d38f010a4">Writeup link</a></p>]]></content><author><name></name></author><category term="smartcontractsecurity" /><category term="ethereum" /><summary type="html"><![CDATA[QuillAudit CTF challenges — Writeup]]></summary></entry><entry><title type="html">Capture the Ether — Challenge Writeup</title><link href="https://vishnuram1999.github.io/smartcontractsecurity/ethereum/2022/05/30/capture-the-ether.html" rel="alternate" type="text/html" title="Capture the Ether — Challenge Writeup" /><published>2022-05-30T00:00:00+00:00</published><updated>2022-05-30T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/smartcontractsecurity/ethereum/2022/05/30/capture-the-ether</id><content type="html" xml:base="https://vishnuram1999.github.io/smartcontractsecurity/ethereum/2022/05/30/capture-the-ether.html"><![CDATA[<h1 id="capture-the-ether--challenge-writeup">Capture the Ether — Challenge Writeup</h1>

<p>You can find the writeup for challenges which I solved during in Capture the Ether. I’m continously updating with more challenges. Stay tuned.</p>

<p><a href="https://infosecwriteups.com/capture-the-ether-challenge-writeup-b10853807690">Writeup link</a></p>]]></content><author><name></name></author><category term="smartcontractsecurity" /><category term="ethereum" /><summary type="html"><![CDATA[Capture the Ether — Challenge Writeup]]></summary></entry><entry><title type="html">picoCTF 2022- Writeup</title><link href="https://vishnuram1999.github.io/cybersecurity/ctf/2022/04/03/picoCTF-2022.html" rel="alternate" type="text/html" title="picoCTF 2022- Writeup" /><published>2022-04-03T00:00:00+00:00</published><updated>2022-04-03T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/ctf/2022/04/03/picoCTF-2022</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/ctf/2022/04/03/picoCTF-2022.html"><![CDATA[<h1 id="picoctf-2022--writeup">picoCTF 2022- Writeup</h1>

<p>You can find the writeup for challenges which I solved during the CTF.</p>

<p><a href="https://infosecwriteups.com/picoctf-2022-writeup-53633ac84ed6">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="ctf" /><summary type="html"><![CDATA[picoCTF 2022- Writeup]]></summary></entry><entry><title type="html">UTCTF 2022 — Writeup</title><link href="https://vishnuram1999.github.io/cybersecurity/ctf/2022/03/14/UTCTF-2022.html" rel="alternate" type="text/html" title="UTCTF 2022 — Writeup" /><published>2022-03-14T00:00:00+00:00</published><updated>2022-03-14T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/ctf/2022/03/14/UTCTF-2022</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/ctf/2022/03/14/UTCTF-2022.html"><![CDATA[<h1 id="utctf-2022--writeup">UTCTF 2022 — Writeup</h1>

<p>You can find the writeup for challenges which I solved during the CTF.</p>

<p><a href="https://infosecwriteups.com/utctf-2022-writeup-de956bfe0bf3">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="ctf" /><summary type="html"><![CDATA[UTCTF 2022 — Writeup]]></summary></entry><entry><title type="html">Beginner picoMini CTF 2022 — Writeup</title><link href="https://vishnuram1999.github.io/cybersecurity/ctf/2022/02/04/picoCTF-mini-2022.html" rel="alternate" type="text/html" title="Beginner picoMini CTF 2022 — Writeup" /><published>2022-02-04T00:00:00+00:00</published><updated>2022-02-04T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/ctf/2022/02/04/picoCTF-mini-2022</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/ctf/2022/02/04/picoCTF-mini-2022.html"><![CDATA[<h1 id="beginner-picomini-ctf-2022--writeup">Beginner picoMini CTF 2022 — Writeup</h1>

<p>You can find the writeup for challenges which I solved during the CTF.</p>

<p><a href="https://infosecwriteups.com/beginner-picomini-ctf-2022-writeup-94174d0ea64b">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="ctf" /><summary type="html"><![CDATA[Beginner picoMini CTF 2022 — Writeup]]></summary></entry><entry><title type="html">Newark Academy CTF (NACTF) 2021 — Challenge Writeups</title><link href="https://vishnuram1999.github.io/cybersecurity/ctf/2022/01/17/NACTF-2021.html" rel="alternate" type="text/html" title="Newark Academy CTF (NACTF) 2021 — Challenge Writeups" /><published>2022-01-17T00:00:00+00:00</published><updated>2022-01-17T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/ctf/2022/01/17/NACTF-2021</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/ctf/2022/01/17/NACTF-2021.html"><![CDATA[<h1 id="newark-academy-ctf-nactf-2021--challenge-writeups">Newark Academy CTF (NACTF) 2021 — Challenge Writeups</h1>

<p>You can find the writeup for challenges which I solved during the CTF.</p>

<p><a href="https://infosecwriteups.com/newark-academy-ctf-nactf-2021-challenge-writeups-28ea2e937cfa">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="ctf" /><summary type="html"><![CDATA[Newark Academy CTF (NACTF) 2021 — Challenge Writeups]]></summary></entry><entry><title type="html">Synkcon CTF 2021 not-hot-dog Writeup</title><link href="https://vishnuram1999.github.io/cybersecurity/ctf/2021/10/06/synkconCTF-2021.html" rel="alternate" type="text/html" title="Synkcon CTF 2021 not-hot-dog Writeup" /><published>2021-10-06T00:00:00+00:00</published><updated>2021-10-06T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/ctf/2021/10/06/synkconCTF-2021</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/ctf/2021/10/06/synkconCTF-2021.html"><![CDATA[<h1 id="synkcon-ctf-2021-not-hot-dog-writeup">Synkcon CTF 2021 not-hot-dog Writeup</h1>

<p>You can find the writeup for challenges which I solved during the CTF.</p>

<p><a href="https://infosecwriteups.com/synkcon-ctf-2021-not-hot-dog-writeup-90b0f9d027f0">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="ctf" /><summary type="html"><![CDATA[Synkcon CTF 2021 not-hot-dog Writeup]]></summary></entry><entry><title type="html">DownUnderCTF 2021 — Get over it!</title><link href="https://vishnuram1999.github.io/cybersecurity/ctf/2021/09/30/downunderCTF-2021.html" rel="alternate" type="text/html" title="DownUnderCTF 2021 — Get over it!" /><published>2021-09-30T00:00:00+00:00</published><updated>2021-09-30T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/ctf/2021/09/30/downunderCTF-2021</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/ctf/2021/09/30/downunderCTF-2021.html"><![CDATA[<h1 id="downunderctf-2021--get-over-it">DownUnderCTF 2021 — Get over it!</h1>

<p>You can find the writeup below for “Get over it!” challenge which I solved during the CTF.</p>

<p><a href="https://infosecwriteups.com/downunderctf-2021-get-over-it-78a3e02eb2e">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="ctf" /><summary type="html"><![CDATA[DownUnderCTF 2021 — Get over it!]]></summary></entry><entry><title type="html">Password-Checker CSAW CTF 2021 Write-Up</title><link href="https://vishnuram1999.github.io/cybersecurity/ctf/2021/09/28/passwordChecker-CSAWCTF-2021.html" rel="alternate" type="text/html" title="Password-Checker CSAW CTF 2021 Write-Up" /><published>2021-09-28T00:00:00+00:00</published><updated>2021-09-28T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/ctf/2021/09/28/passwordChecker-CSAWCTF-2021</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/ctf/2021/09/28/passwordChecker-CSAWCTF-2021.html"><![CDATA[<h1 id="password-checker-csaw-ctf-2021-write-up">Password Checker CSAW CTF 2021 Write-Up</h1>

<p>You can find the writeup below for “Password Checker” challenge which I developed for the CSAW CTF 2021.</p>

<p><a href="https://infosecwriteups.com/password-checker-csaw-ctf-2021-write-up-8949dd62c948">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="ctf" /><summary type="html"><![CDATA[Password Checker CSAW CTF 2021 Write-Up]]></summary></entry><entry><title type="html">TryHackMe: Chocolate Factory Write-up</title><link href="https://vishnuram1999.github.io/cybersecurity/tryhackme/2021/01/22/TryHackMe-Chocolate-Factory-Write-up.html" rel="alternate" type="text/html" title="TryHackMe: Chocolate Factory Write-up" /><published>2021-01-22T00:00:00+00:00</published><updated>2021-01-22T00:00:00+00:00</updated><id>https://vishnuram1999.github.io/cybersecurity/tryhackme/2021/01/22/TryHackMe-Chocolate-Factory-Write-up</id><content type="html" xml:base="https://vishnuram1999.github.io/cybersecurity/tryhackme/2021/01/22/TryHackMe-Chocolate-Factory-Write-up.html"><![CDATA[<h1 id="tryhackme-chocolate-factory-write-up">TryHackMe: Chocolate Factory Write-up</h1>

<p>You can find the writeup below for TryHackMe’s “Chocolate Factory” box writeup.</p>

<p><a href="https://infosecwriteups.com/tryhackme-chocolate-factory-write-up-d430b53f7cb2">Writeup link</a></p>]]></content><author><name></name></author><category term="cybersecurity" /><category term="tryhackme" /><summary type="html"><![CDATA[TryHackMe: Chocolate Factory Write-up]]></summary></entry></feed>