I am new want to learn programming

Do I need any header to convert the hash back ?

Do I need any header to convert the hash back ?

Which hash shall I use, MD5, Sha256 or any others ?

Collision = when two different inputs generate the same output

guys i want to copy function to void* pointer like: my_func() { // code ... } void* copyback; start() { copyfunc(&my_func,copyback); }

wat?

Copy whole function to a pointer

there are an infinite amount of strings that produce the same hash

where is the problem with collisions?

:/ COPY WHOLE MEMORY OF FUNCTION TO a Pointer

That you don't like them :P but was not the real problem

copy the memory of a function to a pointer? what?

are you talking about the stack?

no

where is the problem with collisions?

you can gain access without knowing the password? you can manipulate files without the victim knowing it?

you need to know a password that produces a similar hash

yes, and that is an issue caused by collisions

but that is not such an issue, is it?

I consider using a different password, that accidently produces the same hash, to access my account a serious issue

because that's the memory of a function

4 example function B start address 0x000000 end address 0x000FFF copying 0x000000 until 0x000FFF to a pointer ???!

do you know what a pointer is? it's not a magical way of getting 16**3 free bits

you want to use somethign like memcpy?

mempcy (void* src, void* dest, int size)

can i copy function to a pointer and call the pointer?

why not?

Nice can u give me example?

a: mov eax, 1 mov ebx, 1 ret b: <copied a to b> global _main: call a call b

you don't know the size of a function

but we can search for "ret"

it will be different on every architecture

google "movfuscator"

just accept that you can't avoid reverse engineering

IMHO it is even highly immoral to