2.3 KiB
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 IMPLEMENTATION.MD 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
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DEALINGS IN THE SOFTWARE.