[IDA] Plugin to Convert an entire segment to float?

[Tanaris4]

Apologies in advance if I shoudn't be posting this here (as it's mainly about IDA), but I'm struggling w/how I could efficiently convert ALL values in my _literal4 and _literal8 Mach-O segments to floats.

Check out this screenshot:


Basically the top 3 I had to selected the value, go to Edit -> Operand Type -> Number -> Float.

Obviously I can't do this for every single one as it would take ages. Would anyone be willing to point me in the direction of how I could create a plugin to do this for me? I'm assuming you could just loop through all the literals in a given segment but I'm not experienced w/IDA plugins.

Would be willing to throw some donation money your way if you could assist. I've always struggled on viewing the OS X binary in IDA as floats are not displayed.

Thanks in advance!

[XTZGZoReX]

Dive into IDC. Check the idc sub-directory of your IDA installation.

[Tanaris4]

Should I go the plugin route? Or is that overkill? I downloaded the SDK + started reading this: http://www.binarypool.com/idapluginwriting/idapw.pdf

Edit: w00t scripts will work, thanks! I'm working on it now!

---------- Post added at 11:46 AM ---------- Previous post was at 10:23 AM ----------

Figured it out - now does anyone know how to search for floats w/in IDA? (w/o writing a script)

Here is the auto-conversion script:

#include <idc.idc>

static _ConvertSegmentToFloats(segStart, segEnd, size){
	
	auto address, flags, result;

	result = 0;
	address = segStart;

	while ( address < segEnd ){
		
		flags = GetFlags(address);

		// we have valid data here
		if ( isData(flags) ){

			// float
			if ( size == 0x4 && !isFloat(flags) ){
				result = OpFloat(address, 0);
				Message("\n [%d] Converting location 0x%X to a float", result, address);
			}

			// double
			else if ( size == 0x8 && !isDouble(flags) ){
				result = OpFloat(address, 0);
				Message("\n [%d] Converting location 0x%X to a double", result, address);
			}
		}

		// increase by size!
		address = address + size;
	}
}

static main(){

	auto segPointer;
	auto segStart, segEnd, segName;

	// Get the pointer to our first segment
	segPointer = FirstSeg();
	
	while (segPointer != BADADDR){

		segName = SegName(segPointer);
		segStart = SegStart(segPointer);
		segEnd = SegEnd(segPointer);

		//Message("\n%s from 0x%X to 0x%X", segName, segStart, segEnd );

		// floats
		if ( segName == "__literal4" ){

			_ConvertSegmentToFloats(segStart, segEnd, 0x4);

		}
		// doubles
		else if ( segName == "__literal8" ){
			_ConvertSegmentToFloats(segStart, segEnd, 0x8);
		}

		segPointer = NextSeg( segPointer );
	}
}