How to obfuscate the function names of the unmanaged dll

Question

I want to obfuscate my dll export names. I have come across the same question in stack overflow in the below link, However I could not find the acceptance of solution. Modify dll exports (symbol table). I want to obfuscate the function names

Can anyone suggest?

You could give them obfuscated names before you compile them. — Peter Lawrey, Sep 10 '11 at 06:24
Call your functions Function1 through Function999. Use macros in a header file to give them mnemonic names. — Raymond Chen, Sep 10 '11 at 06:27
@Raymond: +1 for solution and implementation (I wouldn't have thought of it). If you had given an answer instead of commenting, I'd have you upvoted as well - with a better impact. — glglgl, Sep 10 '11 at 07:12
#define PlanBirthday Function1 #define InviteBestFriend Function2 (etc) Now your code can say `InviteBestFriend()` and all that shows up in the DLL is `Function2`. — Raymond Chen, Sep 10 '11 at 15:45

score 1 · Accepted Answer · edited May 23 '17 at 11:43

1

You can use a .def file, in which you can either give exported functions other names, or just export them by ordinal. See Exporting from a DLL Using DEF Files and .def files C/C++ DLLs.

edited May 23 '17 at 11:43

Community

answered Sep 10 '11 at 07:12

Eran

Its sounds easy eran. In shell32.dll, I have seen such ordinals in export. I tired using ordinal numbers for 2 or 3 functions in the list,but I could find the name still in exports section. – Muthukumar Palaniappan Sep 10 '11 at 09:24
OK, I found it. I tried it with NONAME. I mean like this EXPORTS fun1 @1 NONAME Fun2 @2 NONAME. this gives me the success. – Muthukumar Palaniappan Sep 10 '11 at 09:39

1 Answers1