![ida pro mac os x ida pro mac os x](https://origin2.cdn.componentsource.com/sites/default/files/styles/image_large/public/images/product_description/hex-rays/ida-pro-hex-rays-decompilers-bundles-windows/img_769401.gif)
You can see it there loading the GDT, and enabling protected mode and SSE extensions before carrying on with the rest of the CPU init stuff. text segment looks OK:Īnd here’s the entry point in 16-bit mode, the first bit of code executed by the CPU when you power on the Mac: Now when we open IDA and drop in our TE binary we get some good news: On OS X this is actually inside the application bundle at idaq.app/Contents/MacOS/loaders/ (idaq64.app looks inside idaq.app as well).
#Ida pro mac os x install
To install the loader, I just symlinked it into IDA’s loaders directory. Once we’ve added all the segments into IDA we mark the entry point, and return 1 to tell IDA all is well. Call file2base() to read the section’s data into IDA at the virtual address specified in the section header, add_segm() to create a segment of the appropriate type at this virtual address, and set_segm_addressing() to mark the segment as 16-bit if necessary. whether it’s data or code or relocations or whatever), and the addressing mode (this is important because the entry point will be in 16-bit mode). Then for each section (segment) we need to determine the class (ie. So we first use the classes we built earlier to parse the headers. entry_point_addr, "_start", 1 ) return 1 name, seg_type ) set_segm_addressing ( get_segm_by_name ( sec. keys () else "DATA" seg_mode = SECTION_MODES if sec. sections : seg_type = SECTION_CLASSES if sec. seek ( 0 ) te = TEImage ( f ) # load binary for sec in te. The main image header looks something like this: typedef struct def load_file ( f, neflags, format ): # parse header f. It is a stripped down version of PE32, so if you’re familiar with that then you’ll probably recognise these fields.
#Ida pro mac os x how to
This post describes both a bit about the TE image format, and how to go about writing a basic image loader for IDA Pro in Python.įirst, a quick look at the TE image format.
![ida pro mac os x ida pro mac os x](https://media.codeweavers.com/pub/crossover/website/appdb/thumb_7463d692d76d345047a22982a68ba6f3.png)
Apple’s EFI firmare (or at least one version I was looking at) uses the TE image format for the SEC phase binary, but IDA Pro doesn’t seem to understand TE, so I decided to have a crack at writing a loader to handle TE images. The document in which this format is defined can be found here. The EFI documentation defines a simplified version of the PE32 image format, called “TE”, which is intended to reduce the overheads of the PE/COFF headers.