From 21dffa8a83b9d0ab9c2981ddf588ee0cdec70173 Mon Sep 17 00:00:00 2001
From: Vahagn Khachatryan <vkhachat@mentor.com>
Date: Tue, 3 Mar 2015 12:09:18 +0400
Subject: [PATCH] elf dynamic symboles obfuscation.

---
 shared_object_obfuscation/Makefile          | 15 +++++++++
 shared_object_obfuscation/executable.cpp    | 35 +++++++++++++++++++++
 shared_object_obfuscation/interface.h       | 19 +++++++++++
 shared_object_obfuscation/shared_object.cpp | 29 +++++++++++++++++
 4 files changed, 98 insertions(+)
 create mode 100644 shared_object_obfuscation/Makefile
 create mode 100644 shared_object_obfuscation/executable.cpp
 create mode 100644 shared_object_obfuscation/interface.h
 create mode 100644 shared_object_obfuscation/shared_object.cpp

diff --git a/shared_object_obfuscation/Makefile b/shared_object_obfuscation/Makefile
new file mode 100644
index 0000000..477664e
--- /dev/null
+++ b/shared_object_obfuscation/Makefile
@@ -0,0 +1,15 @@
+
+all: libshared_object.so executable.exe
+
+libshared_object.so : shared_object.cpp interface.h
+	g++ -fPIC --shared -O2 $< -o $@
+	strip $@
+	
+
+executable.exe : executable.cpp interface.h libshared_object.so
+	g++ -O2 -lshared_object -L. $< -o $@
+	strip $@
+
+run: all
+	LD_LIBRARY_PATH=. ./executable.exe
+
diff --git a/shared_object_obfuscation/executable.cpp b/shared_object_obfuscation/executable.cpp
new file mode 100644
index 0000000..f4b1e5d
--- /dev/null
+++ b/shared_object_obfuscation/executable.cpp
@@ -0,0 +1,35 @@
+/*
+VIM: let g:lcppflags="-O2 -lshared_object -L."
+VIM: let g:argv=""
+*/
+#include <iostream>
+#include <exception>
+#include "interface.h"
+
+int main ( void )
+{try{
+
+	MyVerySecretClass o;
+
+	o.secret_method1();
+	o.secret_method2();
+	o.secret_method1();
+	o.secret_method2();
+	o.secret_method1();
+	o.secret_method2();
+
+	return 0;
+}
+catch ( const std::exception& e )
+{
+	std::cerr << std::endl
+			<< "std::exception(\"" << e.what() << "\")." << std::endl;
+	return 2;
+}
+catch ( ... )
+{
+	std::cerr  << std::endl
+			<< "unknown exception." << std::endl;
+	return 1;
+}}
+
diff --git a/shared_object_obfuscation/interface.h b/shared_object_obfuscation/interface.h
new file mode 100644
index 0000000..9270e35
--- /dev/null
+++ b/shared_object_obfuscation/interface.h
@@ -0,0 +1,19 @@
+#ifndef __INTERFACE_TO_MY_VERY_SECRET_CLASS__
+#define __INTERFACE_TO_MY_VERY_SECRET_CLASS__
+
+class MyVerySecretClass
+{
+private:
+
+	int secret_var;
+
+public:
+
+	MyVerySecretClass();
+	~MyVerySecretClass();
+
+	void secret_method1();
+	void secret_method2();
+};
+
+#endif
diff --git a/shared_object_obfuscation/shared_object.cpp b/shared_object_obfuscation/shared_object.cpp
new file mode 100644
index 0000000..9eaf474
--- /dev/null
+++ b/shared_object_obfuscation/shared_object.cpp
@@ -0,0 +1,29 @@
+/*
+VIM: let g:lcppflags="-O2 -pthread"
+VIM: let g:argv=""
+*/
+#include <iostream>
+#include <exception>
+
+#include "interface.h"
+
+MyVerySecretClass::MyVerySecretClass()
+	: secret_var(0)
+{
+}
+
+MyVerySecretClass::~MyVerySecretClass()
+{
+	secret_var = -1;
+}
+
+void MyVerySecretClass::secret_method1()
+{
+	++secret_var;
+}
+
+void MyVerySecretClass::secret_method2()
+{
+	std::cout << "The value of secret variable is " << secret_var << std::endl;
+}
+