parse fat macho binary

main.c

#include <iostream>
#include <math.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <mach-o/fat.h>






int main () {
  
		std::string FileName = "/bin/ls";
		char * File;
		FILE *fp;
		int fsize;
        fp = fopen(FileName.c_str(), "r");
        if (!fp) {
            fprintf(stderr, "[!] ERROR: Could not open file to read %s\n", FileName.c_str());
            exit(1);
        }
        
        fseek(fp, 0, SEEK_END);
        fsize = ftell(fp);
        fseek(fp, 0, SEEK_SET);
        File = (char *) malloc(fsize);
        fread(File, fsize, 1, fp);
        fclose(fp);



        struct fat_header *FH = (struct fat_header *)File;
        struct fat_arch   *FA;
        
        FA = (struct fat_arch   *)(File + sizeof(struct fat_header));
        printf ("%i - %i - %i - %i - %i\n",ntohl(FA->cputype), ntohl(FA->cpusubtype), ntohl(FA->offset), ntohl(FA->size), ntohl(FA->align));
        
        FA = (struct fat_arch   *)(File + sizeof(struct fat_header) + sizeof(struct fat_arch));
        printf ("%i - %i - %i - %i - %i\n",ntohl(FA->cputype), ntohl(FA->cpusubtype), ntohl(FA->offset), ntohl(FA->size), ntohl(FA->align));

        /* according to MachOView output shouled be
			CPUTYPE_X86_64_ALL - CPUTSUBYPE_X86_64_ALL - 4096  - 39584 - 12
			CPU_TYPE_i386 	   - CPUTSUBYPE_X86_ALL    - 45056 - 35696 - 12
        */

        free(File);
}