Initial commit

Author: MaxXor

.gitignore

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+build
+*.ll
+*.o
+test/test

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.4)
+
+find_package(LLVM REQUIRED CONFIG)
+add_definitions(${LLVM_DEFINITIONS})
+include_directories(${LLVM_INCLUDE_DIRS})
+link_directories(${LLVM_LIBRARY_DIRS})
+list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
+include(HandleLLVMOptions)
+include(AddLLVM)
+
+add_subdirectory(obfuscator-llvm)

LICENSE.TXT

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+==============================================================================
+Obfuscator-LLVM Release License
+==============================================================================
+University of Illinois/NCSA
+Open Source License
+
+Copyright (c) 2014 Haute Ecole d'Ingénierie et de Gestion du Canton de Vaud (HEIG-VD). All rights reserved. 
+
+Developed by:
+
+    Obfuscator-LLVM Team
+
+    Haute-Ecole d'Ingénierie et de Gestion du Canton de Vaud (HEIG-VD), a part
+    of the University of Applied Sciences and Arts Western Switzerland (HES-SO) 
+
+    http://o-llvm.org
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal with
+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:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimers.
+
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimers in the
+      documentation and/or other materials provided with the distribution.
+
+    * Neither the names of the Obfuscator-LLVM Team, the Haute Ecole d'Ingénierie 
+      et de Gestion du Canton de Vaud (HEIG-VD), the University of Applied Sciences 
+      and Arts Western Switzerland (HES-SO) nor the names of its contributors 
+      may be used to endorse or promote products derived from this Software 
+      without specific prior written permission.
+
+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
+CONTRIBUTORS 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 WITH THE
+SOFTWARE.

README.md

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+# Obfuscator-LLVM
+
+Obfuscator-LLVM is a project initiated in June 2010 by the information security group of the University of Applied Sciences and Arts Western Switzerland of Yverdon-les-Bains ([HEIG-VD](http://www.heig-vd.ch/international)). The aim of this project is to provide increased software security through code obfuscation and tamper-proofing. As the obfuscator currently mostly works at the Intermediate Representation (IR) level, the tool is compatible with all programming languages (C, C++, Objective-C, Ada and Fortran) and target platforms (x86, x86-64, PowerPC, PowerPC-64, ARM, Thumb, SPARC, Alpha, CellSPU, MIPS, MSP430, SystemZ, and XCore) currently supported by LLVM. The initially published source code and research paper can be found [here](https://github.com/obfuscator-llvm/obfuscator). This fork makes the obfuscator available as an extension to most available LLVM installations. It doesn't require any changes to existing LLVM installations, unlike the project published by the authors of Obfuscator-LLVM.
+
+## Features
+
+Here is a list of the different features that are currently available:
+
+* [Instructions Substitution](https://github.com/obfuscator-llvm/obfuscator/wiki/Instructions-Substitution) `-mllvm -sub`
+* [Bogus Control Flow](https://github.com/obfuscator-llvm/obfuscator/wiki/Bogus-Control-Flow) `-mllvm -bcf`
+* [Control Flow Flattening](https://github.com/obfuscator-llvm/obfuscator/wiki/Control-Flow-Flattening) `-mllvm -fla`
+* [Functions annotations](https://github.com/obfuscator-llvm/obfuscator/wiki/Functions-annotations)
+
+## Building
+
+To build this project it's required to have Clang 3.3+, LLVM 3.3+ and CMake 3.4+ installed. On Ubuntu 18.04+ you can use `sudo apt install clang-7 llvm-7-dev cmake` to install the required softwre. To compile the obfuscator simply run `./build.sh` or execute the following commands in this directory:
+
+```bash
+mkdir -p build
+cd build
+cmake ../
+cmake --build .
+```
+
+## Usage
+
+Adding the obfuscator to existing projects which use an LLVM compiler is very easy. For the Make (or rather Makefile) buildsystem simply adjust the small example below to fit your needs:
+
+```makefile
+OBFUSCATOR_FLAGS=-Xclang -load -Xclang /path/to/ObfuscatorLLVM.so
+
+# ... your targets
+
+tool: tool.c utils.c helper.c clangtool.so
+    $(CC) $(CXXFLAGS) $(OBFUSCATOR_FLAGS) -O0 -o test test.c
+```
+
+You can also integrate the obfuscator to your existing CMake projects for any project that uses LLVM:
+
+```cmake
+target_compile_options(<name> PRIVATE -Xclang -load -Xclang /path/to/ObfuscatorLLVM.so)
+```
+
+## Testing
+
+The [Himeno benchmark](http://accc.riken.jp/en/supercom/documents/himenobmt/) is used to test the effectiveness of the obfuscation techniques. To execute the obfuscator test run `./test.sh`. This will generate LLVM IR from `./test/test.c`, apply obfuscations on it and run the obfuscated program. The obfuscated LLVM IR can be found in `./test/test_obfuscated.ll` and the non-obfuscated LLVM IR in `./test/test.ll`.

build.sh

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+#!/bin/sh
+
+mkdir -p build
+cd build
+cmake ../
+cmake --build .