How to interpret the opcode manually?

Question

77f4bcbc 8945fc          mov     dword ptr [ebp-4],eax

And here\'s the rule:

88  /r   MOV r/m8,r8       2/2           Move byte reg         


        

Answer 1

If you want to write your own disassembler, here is what you need.

For a quick summary, look here