Edit (patch) a binary file in IDA Pro

Question

Hi, i would like to know how to edit a binary file in ida pro (i just need to change one instruction!)

(its ARM binary)

thanks

Answer 1

I think IDA used to have a feature to do that, but it's not present in the current versions.

You should just use a hex editor. Note the file offset in IDA and edit the file at that address. If you'd like to see the changes in IDA, use the "File" -> "Load file" -> "Reload the input file" menu item.

Answer 2

Possibly edit:

idagui.cfg: DISPLAY_PATCH_SUBMENU = YES

If the menu is not enabled, then use

Edit/Patch code/Change Byte

Answer 3

First do as Lundman suggested, then choose File / Produce / DIF file.

Then apply the diff file using an external tool