hook keyboard ISR

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Apolo

Joined: 18 Mar 2017
Posts: 23

Apolo 06 Apr 2017, 12:37

I am trying to hook keyboard ISR but I can't open device because
CreateFile returns 0000007Bh ERROR_INVALID_NAME. Whre is my eeror?

Code:

invoke DefineDosDevice,[raw],filename1,devicename
        lea     rcx,[filename2]
        invoke  CreateFileA,rcx,GENERIC_ALL,FILE_SHARE_WRITE or 

        FILE_SHARE_READ,0,3,0,0
        ret

        section '.data' data writeable readable

        devicename      db '\\Device\\KeyboardClass0',0
        filename1       db 'keyboard',0
        filename2       db '\\.\keyboard',0
        raw

06 Apr 2017, 12:37

Apolo

Joined: 18 Mar 2017
Posts: 23

Apolo 07 Apr 2017, 08:30

Aaarrggghhh!
Why nobody answer?

07 Apr 2017, 08:30

zhak

Joined: 12 Apr 2005
Posts: 501
Location: Belarus

zhak 07 Apr 2017, 15:25

Your devicename path is wrong -- no escaping needed.

Code:

devicename      db '\Device\KeyboardClass0',0

I'm not 100% sure, but devices may not accept all file attributes. Maybe windows coders can shed more light on that.

What is the value of [raw] you pass to the function?

Anyway, try the following code, should open the device. At least it opens it for me on Win7 x64

Code:

include 'include\win64ax.inc'

.code 

start:
        invoke DefineDosDevice, 1, filename1, devicename
        lea     rcx, [filename2]
        invoke  CreateFile, rcx, GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0
        mov [hKbd], rax
        invoke ExitProcess, 0

.end start 

.data 
devicename      db '\Device\KeyboardClass0',0
filename1       db 'kbd',0
filename2       db '\\.\kbd',0
hKbd             dq ?

07 Apr 2017, 15:25

Apolo

Joined: 18 Mar 2017
Posts: 23

Apolo 07 Apr 2017, 16:13

Zach, thanks for answer me, the first problem solved but now I CreateFile get: ERROR_ACCESS_DENIED when I try to open keyboard device. Why it happen???

07 Apr 2017, 16:13

Apolo

Joined: 18 Mar 2017
Posts: 23

Apolo 10 Apr 2017, 10:57

Now i need the number of

Code:

IOCTL_INTERNAL_I8042_HOOK_KEYBOARD

constant. What is this number?

10 Apr 2017, 10:57

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20685
Location: In your JS exploiting you and your system

revolution 10 Apr 2017, 11:44

Apolo wrote:

Now i need the number of
Code:
IOCTL_INTERNAL_I8042_HOOK_KEYBOARD    
constant. What is this number?

Visit my website. It has all the answers you are looking for. Click on the "WWW" icon in this post.

10 Apr 2017, 11:44

system error

Joined: 01 Sep 2013
Posts: 670

system error 10 Apr 2017, 13:40

revolution wrote:

Visit my website. It has all the answers you are looking for. Click on the "WWW" icon in this post.

Your website provides the best answers!
Congratulations from the bottom of my heart.

10 Apr 2017, 13:40

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