assembly - IDA "Invalid Operand" error when patching -



assembly - IDA "Invalid Operand" error when patching -

i attempting patch binary in ida using "assemble" option, , every time come in instruction arithmetic calculate offset, receive invalid operand error. example:

mov [bp-4], bx

returns invalid operand, while

mov ax, bx

works.

i've attempted playing around format of instruction (eg include word ptr, utilize 4h, etc) nil seems work. there way error, or entering byte code patching option?

assembly x86 patch disassembling ida

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