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May 22, 2015

Rosetta’s Way Back to the Source

Filed under: Compilers,Computer Science,Programming,Software Engineering — Patrick Durusau @ 4:11 pm

Rosetta’s Way Back to the Source – Towards Reverse Engineering of Complex Software by Herman Bos.

From the webpage:

The Rosetta project, funded by the EU in the form of an ERC grant, aims to develop techniques to enable reverse engineering of complex software sthat is available only in binary form. To the best of our knowledge we are the first to start working on a comprehensive and realistic solution for recovering the data structures in binary programs (which is essential for reverse engineering), as well as techniques to recover the code. The main success criterion for the project will be our ability to reverse engineer a realistic, complex binary. Additionally, we will show the immediate usefulness of the information that we extract from the binary code (that is, even before full reverse engineering), by automatically hardening the software to make it resilient against memory corruption bugs (and attacks that exploit them).

In the Rosetta project, we target common processors like the x86, and languages like C and C++ that are difficult to reverse engineer, and we aim for full reverse engineering rather than just decompilation (which typically leaves out data structures and semantics). However, we do not necessarily aim for fully automated reverse engineering (which may well be impossible in the general case). Rather, we aim for techniques that make the process straightforward. In short, we will push reverse engineering towards ever more complex programs.

Our methodology revolves around recovering data structures, code and semantic information iteratively. Specifically, we will recover data structures not so much by statically looking at the instructions in the binary program (as others have done), but mainly by observing how the data is used

Research question. The project addresses the question whether the compilation process that translates source code to binary code is irreversible for complex software. Irreversibility of compilation is an assumed property that underlies most of the commercial software today. Specifically, the project aims to demonstrate that the assumption is false.
… (emphasis added)

Herman gives a great thumbnail sketch of the difficulties and potential for this project.

Looking forward to news of a demonstration that “irreversibility of computation” is false.

One important use case being verification that software that claims to have used prevention of buffer overflow techniques has in fact done so. Not the sort of thing I would entrust to statements in marketing materials.

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