How to send the ATA command 34h with DeviceIoControl

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Atlas

Joined: 05 Jun 2017
Posts: 7

Atlas 05 Jun 2017, 11:44

How to send the ATA command 34h(write sector(s) with DeviceIoControl using the ATA_PASS_THRU structure? I dont know how to declare this struct in FASM but im MASM i declare:

Code:

ATA_PASS_THRU STRUCT DWORD
        Length1                         WORD  ?
        AtaFlags                        WORD  ?
        PathId                          BYTE  ? 
        TargetId                        BYTE  ?
        Lun                             BYTE  ?
        Reserved1                       BYTE  ?
        DataTransferLength              DWORD  ?
        TimeOutValue                    DWORD  ?
        Reserved2                       DWORD  ?
        DATABUFFEROFFSET                DWORD  ?
        align 8
        Ata1                            ATA_STRUCT1 <>
        align 8
        Ata2                            ATA_STRUCT2 <>
        ATA_PASS_THRU ENDS
        PTE1 ATA_PASS_THRU <>

How to declare this structure in FASM and how to use the ATA command write sector LBA-48?

05 Jun 2017, 11:44

Atlas

Joined: 05 Jun 2017
Posts: 7

Atlas 06 Jun 2017, 08:40

Aaahhrrr! If nobody answer I will have a hysterical attack. I am being mad!

06 Jun 2017, 08:40

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 06 Jun 2017, 09:10

06 Jun 2017, 09:10

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20309
Location: In your JS exploiting you and your system

revolution 06 Jun 2017, 09:20

Atlas == Apolo

06 Jun 2017, 09:20

Atlas

Joined: 05 Jun 2017
Posts: 7

Atlas 06 Jun 2017, 10:41

I just want to know how to declare struct inside struct as I show above. How to issue ATA command 34h with an IOCTL_ATA_PASS_THROUGH_DIRECT request to write at hard disk sector ?

06 Jun 2017, 10:41

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 06 Jun 2017, 10:51

Atlas wrote:

I just want to know how to declare struct inside struct as I show above. How to issue ATA command 34h with an IOCTL_ATA_PASS_THROUGH_DIRECT request to write at hard disk sector ?

You can declare structures inside structures in FASM, regardless of whether you use the native "struc{}" form or any of the "struct" macro forms.

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06 Jun 2017, 10:51

Atlas

Joined: 05 Jun 2017
Posts: 7

Atlas 06 Jun 2017, 11:02

JohnFound wrote:

use the native "struc{}" form or any of the "struct" macro forms.

How to use struct{} and struct macro? Please give me an example

06 Jun 2017, 11:02

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 06 Jun 2017, 11:09

Why not to read the FASM manual?

Here for structures: https://flatassembler.net/docs.php?article=manual#2.3.4
Here for general data definitions: https://flatassembler.net/docs.php?article=manual#1.2.2

Well, simple example:

Code:

struc POINT {
  .x dd ?
  .y dd ?
}

struc RECT {
  .p1 POINT
  .p2 POINT
}

With "struct" in FreshLib definition:

Code:

struct POINT
  .x dd ?
  .y dd ?
ends

struct RECT
  .p1 POINT
  .p2 POINT
ends

06 Jun 2017, 11:09

Atlas

Joined: 05 Jun 2017
Posts: 7

Atlas 06 Jun 2017, 13:08

How to get size of these structs? I already try sizeof.RECT but I kant get the size.

06 Jun 2017, 13:08

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 06 Jun 2017, 14:10

sizeof.RECT will work only for the "struct ends" macros. For pure "struc" it is a little bit more complex:

Code:

virtual at 0
  RECT RECT
  sizeof.RECT = $
end virtual

Read about "virtual" in the manual.

06 Jun 2017, 14:10

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