Someone

#include <sys/mman.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>

#define ELF_MAGIC "\x7F\x45\x4C\x46"
#define END_ELF "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"

unsigned char *mapfile(const char *path, unsigned long *size)
{
  int fd;
  struct stat s;
  unsigned char *ret;

  if ((fd = open(path, O_RDONLY, 0400)) < 0)
    {
      fprintf(stderr, "[X] %s : %s\n", path, strerror(errno));
      return NULL;
    }

  if (fstat(fd, &s) < 0)
    {
      perror("[X] fstat");
      return NULL;
    }
  *size = (unsigned long) s.st_size;
  if ((ret = (unsigned char *) mmap(0, s.st_size, PROT_READ, MAP_SHARED, fd, 0)) == NULL)
    {
      perror("[X] mmap");
      return NULL;
    }
  printf("[*] File %s mapped at %p, %ld bytes\n", path, ret, *size);
  return ret;
}

int extractelf(unsigned char *map, unsigned long size)
{
  unsigned char *cur_map;
  unsigned char *begin, *end;
  unsigned int i;
  unsigned long cur_size;
  
  for (cur_map = map, cur_size = size, i = 0; cur_size > 1; i++)
    {
      if ((begin = (unsigned char *) memmem(cur_map, cur_size, ELF_MAGIC, 4)) == NULL)
        break;
      cur_size -= (unsigned long) begin - (unsigned long) cur_map;
      cur_map = begin;
      if ((end = (unsigned char *) memmem(cur_map, cur_size, END_ELF, 16)) == NULL)
        break;
      cur_size -= (unsigned long) end - (unsigned long) cur_map;
      cur_map = end;
      printf("\t-> ELF file #%d at : begin=%p end=%p size=%lu\n",
             i, begin, end, (unsigned long) end - (unsigned long) begin);
    }
  printf("[*] All OK.\n");
  return 0;
}

int main(int argc, const char **argv)
{
  unsigned char *mapped;
  unsigned long size;

  if (argc < 2)
    {
      fprintf(stderr, "Usage: %s <file>\n", argv[0]);
      return 1;
    }
  if ((mapped = mapfile(argv[1], &size)) == NULL)
    return 1;
  return extractelf(mapped, size);
}