About 0x00000150 vs 0x00000011:

0x00000150 means D_PAGED | DYNAMIC | HAS_SYM
and 0x00000011 means HAS_SYMS | HAS_RELOC

Here, (from bfd/bfd-in2.h in binutils sources)

  /* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
     linker sets this by default, but clears it for -r or -n or -N).  */
  #define D_PAGED

  /* BFD contains relocation entries.  */
  #define HAS_RELOC                   0x1

  /* BFD is a dynamic object.  */
  #define DYNAMIC                    0x40

I believe this is a dead end.
Writing "int r(void){return 0;}" to a.c
and running "gcc -c -shared -fpic a.c" on my x86_64
and "objdump -x a.o", I see

architecture: i386:x86-64, flags 0x00000011:
HAS_RELOC, HAS_SYMS
start address 0x0000000000000000

(The flags are identical)

Greetings,
Maxime.