How to decipher the machine codes from x86 ASM?

Question

I have following 2 lines from listing (x86 ASM):

0009 66| BB 00000014        mov EBX, (type Tabl1)*2
000F 67| 8D 00000000 R      lea DL, A2[EBX])

Could you explain me what is a meaning of each part of machine code (the left part of line)?

Google "Intel Instruction Encoding" – frasnian Dec 21 '14 at 14:57 — frasnian, Dec 21 '14 at 14:57

score 1 · Answer 1 · answered Dec 21 '14 at 15:09

0009 66| BB 00000014

0009 is an offset in the program
66 is an operand size prefix
BB is an instruction opcode
00000014 is a 32 bit address displacement

000F 67| 8D 00000000

000F is an offset in the program
67 is an address size prefix
8D is an instruction opcode
00000000 is a 32 bit address displacement

1 Answers1