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Buff3r BytesCTF
BBCTF · persistent challenge lab

Enter theByte

Buff3r Bytes runs competitions worth turning up for and a lab worth staying in. Every solve comes back as a debrief, every path you find gets drawn, and your skill map tells you the truth about where you are.

Start hackingBrowse competitionsBreak. Exploit. Learn. Repeat.
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Operators
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Challenges solved
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Live challenges
0
First bloods
Competitions

Next on the board

Public events, community nights and private corporate rounds — all on the same engine.

All competitions
NO COMPETITION SCHEDULED

Nothing is running yet. The challenge library is open in the meantime.

Challenge library

Featured work

One from each discipline. The library holds considerably more.

Explore all 0
LIBRARY EMPTY

No challenges are published yet. Seed the platform or import a challenge set.

Why Buff3r Bytes

A scoreboard is the least interesting part of a CTF

Six things this platform does that a scoreboard does not. They are the product, not features bolted on the side.

per-challenge

Attack Graph

The path you find gets drawn as you find it. Nodes stay hidden until you discover them, so the graph is a record of your progress rather than a spoiler.

per-player

Hacker Journey

A capability tree instead of a number. Recon, injection, access control, pivoting — each one unexplored, learning, practised or mastered.

personalised

Adaptive Difficulty

Platform difficulty is one number. Yours is another. We estimate it from what you have already solved — never from anything that would give the answer away.

select challenges

Investigation Mode

Some challenges hand you logs, captures, artefacts and a timeline to build. Mark evidence, form a hypothesis, then call it. It is a small SOC, not a text box.

discovery

Challenge DNA

Every challenge carries a technical fingerprint. Find work by concept, not category — and authors can see exactly where their coverage is thin.

every solve

Post-Solve Learning

Solving does not end at "correct". You get the technique, what actually happened, the skill you just banked and where to go next.

Signal

Live hacker activity

NO ACTIVITY YET

The ticker starts as soon as the first flag lands.

First blood

Taken first

NO FIRST BLOOD YET

Every challenge is still unclaimed.

Cyber heatmap

What the community is breaking right now

Solve volume by category over the last 72 hours, with the field's current pressure points underneath.

NO SIGNAL YET

The heatmap fills as solves land. Be the first reading on it.

Most active

Web

0 solves · 0 operators in play

Fastest growing

Waiting for data

Hardest in play

Waiting for data

Most failed

Waiting for data

Standings

Global leaderboard

All-time, across every competition and the persistent lab.

Full standings
BOARD EMPTY

The first solve writes the first row.

Hall of fame

The record

Full record
NO RECORDS YET

The hall fills itself from the first competition onward.

Community

Recent writeups

All writeups
NO WRITEUPS PUBLISHED

Writeups open up once a competition completes, or immediately for library challenges.

BBCTF

Pick a target. Find the path.

Free to join. 0 challenges live right now, and a skill map that starts filling in from your first solve.