How to call a relative address?

[marcussacana]

I'm trying catch the RIP in the code with this:

call +0 ;0xE8 00 00 00 00
pop RAX

Therefore if I use the Instruction.CreateBranch the assembler will take my '0' address as a absolute memory address;
then is there a way to assembly a call instruction with a relative address?

Notice that I can't use labels in the code without rewrite my tool, for me, should be more easy just manually put the 0xE8 00 00 00 00 in the memory after encode instead rewrite.

[wtfsck]

If you're using the Assembler C# class you can just call call(Label) and put the label after the call instruction. But since you say you can't use labels, you can just add the bytes yourself with db(0xE8,0,0,0,0)

[marcussacana]

db is a good idea, thx