URL Grabber to fetch remote files.

Cryptography is hard, I hope I got this one right

Because php isn't the only language with an "interesting" design.

Acunetix AcuSensor Technology is a new security technology that allows you to identify more vulnerabilities than a traditional Web Application Scanner, whilst generating less false positives. In addition it indicates exactly where in your code the vulnerability is and reports also debug information.

Nothing fancy

Serialization is a pain!

I was told that guessing is fun.

Nobody listen to techno, nor to wrap music.

Guessing is fun!

Nothing fancy, with a twist

Bypassing Security Checks

It's not AS simple AS it looks

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

Call me maybe

Completely Automated Public Turing test to please Computers and break Humans Apart

Secure text storage

Declaration, instantiation, evaluation, creation, execution, … can't I just get a RCE?

This is level to reflect on.

Yet an other sqli challenge, or is it? Yes it is. Or… is it?

ChaChaCha!

Remote Code Execution

This time, it's different.

The magical Shellpecker!

Can you please give it back? Thanks.

It's alwasy easier when you're admin.

Something tragic is about to happen…

Think outside the (sand)box

Yet another fine serialization-based challenge!

Blacklist vs. SQLi

Because sometimes using eval is secure

shall we play a game?