deadlisting:

[0x080485d4]> pD 100
      0x080485d4  main:
      0x080485d4      8d4c2404         lea ecx, [esp+0x4]
      0x080485d8      83e4f0           and esp, 0xfffffff0
      0x080485db      ff71fc           push dword [ecx-0x4]
      0x080485de      55               push ebp
      0x080485df      89e5             mov ebp, esp
      0x080485e1      53               push ebx
      0x080485e2      51               push ecx
      0x080485e3      81ec40040000     sub esp, 0x440
      0x080485e9      65a114000000     mov eax, [gs:0x14]
      0x080485ef      8945f4           mov [ebp-0xc], eax
      0x080485f2      31c0             xor eax, eax
      0x080485f4      c785e0fbffff130. mov dword [ebp+0xfffffbe0], 0x13
      0x080485fe      c785d8fbffff000. mov dword [ebp+0xfffffbd8], 0x0
      0x08048608      c785d4fbffff000. mov dword [ebp+0xfffffbd4], 0x0
      0x08048612      c785c8fbffff000. mov dword [ebp+0xfffffbc8], 0x0
      0x0804861c      c744240464000000 mov dword [esp+0x4], 0x64
      0x08048624      8d85e3fcffff     lea eax, [ebp+0xfffffce3]
      0x0804862a      890424           mov [esp], eax
      0x0804862d      e8eefeffff       call dword imp.gethostname


debugger:

[0x080485d4]> pD 100
      0x080485d4  rip:
      0x080485d4  b   8d4c2404         lea ecx, [rsp+0x4]
      0x080485d8      83e4f0           and esp, 0xfffffff0
      0x080485db      ff71fc           push qword [rcx-0x4]
      0x080485de      55               push rbp
      0x080485df      89e5             mov ebp, esp
      0x080485e1      53               push rbx
      0x080485e2      51               push rcx
      0x080485e3      81ec40040000     sub esp, 0x440
      0x080485e9      65a114000000894. mov eax, [gs:0x31f4458900000014]
      0x080485f3      c0c785           rol bh, 0x85
      0x080485f6      e0fb             loopnz 0x80485f3
      0x080485f8      ff               invalid
      0x080485f9      ff13             call qword [rbx]
         ; unk(unk, unk, unk, unk) (oeax+0)
      0x080485fb      0000             add [rax], al
      0x080485fd      00c7             add bh, al
      0x080485ff      85d8             test eax, ebx
      0x08048601      fb               sti