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#ctf

Capture The Flag competitions, challenges, writeups, and strategies.

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How I Broke a "Letters Only" Filter Using Invisible Bytes (YesWeHack Dojo #54 Write-up)

How I Broke a "Letters Only" Filter Using Invisible Bytes (YesWeHack Dojo #54 Write-up)

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5 min read
HTB - Escape Writeup - no Metasploit

HTB - Escape Writeup - no Metasploit

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7 min read
OverTheWire Bandit Level 3 Writeup — Find a Hidden Dotfile

OverTheWire Bandit Level 3 Writeup — Find a Hidden Dotfile

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2 min read
PicoCTF Wave a Flag Writeup — Read a Remote Binary's Help Output

PicoCTF Wave a Flag Writeup — Read a Remote Binary's Help Output

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2 min read
Unified Offline Tool Solves CTF and OSCP Progress Tracking Challenges for Cybersecurity Professionals

Unified Offline Tool Solves CTF and OSCP Progress Tracking Challenges for Cybersecurity Professionals

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10 min read
A binary CTF riddle that came down to one byte at a time

A binary CTF riddle that came down to one byte at a time

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2 min read
OverTheWire Bandit Level 2 Writeup — Read a Filename With Spaces

OverTheWire Bandit Level 2 Writeup — Read a Filename With Spaces

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2 min read
Finding a flag hidden in a .wav file with a spectrogram

Finding a flag hidden in a .wav file with a spectrogram

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3 min read
PicoCTF Buffer Overflow 1 Writeup — Overwrite a Return Address to Call win()

PicoCTF Buffer Overflow 1 Writeup — Overwrite a Return Address to Call win()

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3 min read
No dejé que los nervios me impidieran programar mi propia utilidad

No dejé que los nervios me impidieran programar mi propia utilidad

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3 min read
Attacking APIs — Skills Assessment Writeup

Attacking APIs — Skills Assessment Writeup

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2 min read
TryHackMe CC: Pen Testing - Full Walkthrough (2026)

TryHackMe CC: Pen Testing - Full Walkthrough (2026)

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4 min read
OverTheWire Bandit Level 1 Writeup — Read a File Named -

OverTheWire Bandit Level 1 Writeup — Read a File Named -

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2 min read
PicoCTF Buffer Overflow 0 Writeup — Overwrite a Variable to Unlock the Flag

PicoCTF Buffer Overflow 0 Writeup — Overwrite a Variable to Unlock the Flag

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3 min read
TryHackMe: Binary Heaven - Writeup

TryHackMe: Binary Heaven - Writeup

1
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6 min read
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