![Pasticciotto]

# What is this?
Pasticciotto is a virtual machine which can be used to obfuscate code. It was developed for the **PoliCTF 17** as a reversing challenge.

I wanted to experiment with VM obfuscation since it was a topic that caught my attention while reversing challenges for various CTFs. So, I decided to write one **from scratch** in order to understand better how instruction set architectures are implemented! 

The design and the implementation behind Pasticciotto are not state-of-the-art but hey, it works!

# What about the challenge?
I do not want to spoil the challenge for those that haven't completed it yet. Check out some write-up online!

# Instruction set
Check out the file [INSTRUCTION_SET.MD](IS) to understand how the VM works and which operations it can do! Watch out for some spoilers if you haven't completed the challenge though!

# Why "Pasticciotto"?
In Italian, "Pasticciotto" has two meanings! 

The first one is **"little mess"** which perfectly describes how I put up this project. The second one is a typical dessert from Southern Italy, Salento! It's filled with cream! Yum!

# Contributions

Any contribution is **very** welcome! Feel free to open issues and pull requests!


# License
```
Copyright 2017 Giulio De Pasquale

Permission is hereby granted, free of charge, to any person obtaining a copy of this 
software and associated documentation files (the "Software"), to deal in the Software 
without restriction, including without limitation the rights to use, copy, modify, merge, 
publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or 
substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
DEALINGS IN THE SOFTWARE.
```
[Pasticciotto]: ./res/pasticciotto.png
[IS]: ./INSTRUCTION_SET.md