Notice that single byte patches were combined into larger consecutive buffers to make it easier to manage.

The traditional way of doing this involves opening the Hex subview and changing the appropriate byte corresponding to jz (0x74) to jnz (0x75) as follows: Let’s patch the application to reverse the logic and change jz to jnz. text:00401030Īs you can see, the program will always follow the “Terminating…” branch since the conditional jump at 00401007 will never be true (argc is normally greater than 0). text:0040101F push offset aYouHavePatched 'patched.'. text:00401009 push offset Format 'Terminating. '. text:00401000 int _cdecl main(int argc, char **argv). This guide will walk you through various features of the plugin by examining and patching a simple program below. However, it was only extensively tested on IDA Pro 6.5 for Windows and OS X with x86, x86–64 and ARM binaries. The plugin us es pure IDA Python API, so it should be compatible with recent versions of IDA (6.2+) on different platforms. The plugin will be automatically loaded the next time you start IDA Pro. Simply copy idapatcher.py into IDA's plugins folder.

Ida pro plugin