From 67b4092b96a3fbf899dce3844a4f4123f297f4cb Mon Sep 17 00:00:00 2001
From: Vahagn Khachatryan <vkhachat@mentor.com>
Date: Tue, 3 Mar 2015 22:23:02 +0400
Subject: [PATCH] Shared object obfuscation concept proven.

---
 linux/shared_object_obfuscation/Makefile      | 30 +++++++++++++++++++
 .../shared_object_obfuscation}/executable.cpp |  1 +
 .../shared_object_obfuscation}/interface.h    |  1 +
 .../shared_object.cpp                         | 11 +++++++
 shared_object_obfuscation/Makefile            | 15 ----------
 5 files changed, 43 insertions(+), 15 deletions(-)
 create mode 100644 linux/shared_object_obfuscation/Makefile
 rename {shared_object_obfuscation => linux/shared_object_obfuscation}/executable.cpp (96%)
 rename {shared_object_obfuscation => linux/shared_object_obfuscation}/interface.h (91%)
 rename {shared_object_obfuscation => linux/shared_object_obfuscation}/shared_object.cpp (70%)
 delete mode 100644 shared_object_obfuscation/Makefile

diff --git a/linux/shared_object_obfuscation/Makefile b/linux/shared_object_obfuscation/Makefile
new file mode 100644
index 0000000..9086fdf
--- /dev/null
+++ b/linux/shared_object_obfuscation/Makefile
@@ -0,0 +1,30 @@
+
+all: libshared_object.so executable.exe
+
+clean:
+	rm *.o *.so *.exe
+
+libshared_object.so : shared_object.o
+	g++ -fPIC --shared -O2 $< -o $@
+	strip $@
+
+shared_object.o : shared_object.cpp interface.h
+	g++ -fPIC -O2 $< -c -o $@
+	objcopy --redefine-sym _ZN17MyVerySecretClass14secret_method1Ev=m1 \
+			--redefine-sym _ZN17MyVerySecretClass14secret_method2Ev=m2 \
+			--redefine-sym _ZN17MyVerySecretClass14secret_method3Ev=m3 $@
+	
+
+executable.exe : executable.o libshared_object.so
+	g++ -O2 -lshared_object -L. $< -o $@
+	strip $@
+	
+executable.o : executable.cpp interface.h
+	g++ -O2 -lshared_object -L. $< -c -o $@
+	objcopy --redefine-sym _ZN17MyVerySecretClass14secret_method1Ev=m1 \
+			--redefine-sym _ZN17MyVerySecretClass14secret_method2Ev=m2 \
+			--redefine-sym _ZN17MyVerySecretClass14secret_method3Ev=m3 $@
+
+run: all
+	LD_LIBRARY_PATH=. ./executable.exe
+
diff --git a/shared_object_obfuscation/executable.cpp b/linux/shared_object_obfuscation/executable.cpp
similarity index 96%
rename from shared_object_obfuscation/executable.cpp
rename to linux/shared_object_obfuscation/executable.cpp
index f4b1e5d..6abcf47 100644
--- a/shared_object_obfuscation/executable.cpp
+++ b/linux/shared_object_obfuscation/executable.cpp
@@ -17,6 +17,7 @@ int main ( void )
 	o.secret_method2();
 	o.secret_method1();
 	o.secret_method2();
+	o.secret_method3();
 
 	return 0;
 }
diff --git a/shared_object_obfuscation/interface.h b/linux/shared_object_obfuscation/interface.h
similarity index 91%
rename from shared_object_obfuscation/interface.h
rename to linux/shared_object_obfuscation/interface.h
index 9270e35..99f8704 100644
--- a/shared_object_obfuscation/interface.h
+++ b/linux/shared_object_obfuscation/interface.h
@@ -14,6 +14,7 @@ public:
 
 	void secret_method1();
 	void secret_method2();
+	void secret_method3();
 };
 
 #endif
diff --git a/shared_object_obfuscation/shared_object.cpp b/linux/shared_object_obfuscation/shared_object.cpp
similarity index 70%
rename from shared_object_obfuscation/shared_object.cpp
rename to linux/shared_object_obfuscation/shared_object.cpp
index 9eaf474..f5c0e77 100644
--- a/shared_object_obfuscation/shared_object.cpp
+++ b/linux/shared_object_obfuscation/shared_object.cpp
@@ -2,6 +2,10 @@
 VIM: let g:lcppflags="-O2 -pthread"
 VIM: let g:argv=""
 */
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
 #include <iostream>
 #include <exception>
 
@@ -27,3 +31,10 @@ void MyVerySecretClass::secret_method2()
 	std::cout << "The value of secret variable is " << secret_var << std::endl;
 }
 
+void MyVerySecretClass::secret_method3()
+{
+	char cmdln[128];
+	sprintf( cmdln, "pstack %d", getpid() );
+	system( cmdln );
+}
+
diff --git a/shared_object_obfuscation/Makefile b/shared_object_obfuscation/Makefile
deleted file mode 100644
index 477664e..0000000
--- a/shared_object_obfuscation/Makefile
+++ /dev/null
@@ -1,15 +0,0 @@
-
-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
-