keylogger without INT

[Hercules]

Hi! I'm writing a keylogger for all OSes(include windows) my code works fine when press a key the key is logged but the keyboard seems locked. Why it happens? I think that the problem is at the value at input status byte. This is part of my code:

Code: Select all

Begin:
in al,64h
test al,1
jz Begin
test al,20h
jnz Begin
in al,60h
...

What is wrong at the code above? Why the keyboard lock with this code?

[iansjack]

You don't appear to be sending the end-of-interrupt command.

[Hercules]

No! This is NOT a interrupt. This is the code to get a key without interruopts.

[Combuster]

include[sic] windows

You're stealing the scancode from the driver. Driver sad. Driver dies from starvation. RIP windows.

But seriously, start with explaining why you're even doing this.

[bluemoon]

And anyone still using PS/2 keyboard or have an ancient OS that uses PS/2 emulation mode?

[iansjack]

No! This is NOT a interrupt. This is the code to get a key without interruopts.

You're joking, aren't you?

[Hercules]

You're joking, aren't you?

No! I'm NOT joking and do NOT provoke me because I am going to have a hysterical attack.
The question is that this code don't works because the value at port 64h that I think is 21h is NOT 21h then what is the value of input status byte(64h) for I can read scancode of port 60h?

[Minoto]

The question is that this code don't works because the value at port 64h that I think is 21h is NOT 21h then what is the value of input status byte(64h) for I can read scancode of port 60h?

Have you tried searching the Wiki? The article about the 8042 PS/2 controller might have the information you need.

[iansjack]

You're joking, aren't you?

No! I'm NOT joking.

That's sad.

[Combuster]

do NOT provoke me because I am going to have a hysterical attack.

Have we met before? Or was it some relative?

If you can't control yourself, that's your problem. Your actions are your responsibility.

[nerdguy]

do NOT provoke me because I am going to have a hysterical attack.

I guess someone once said that you need to be emotionally strong before doing something that requires intellectual strength like programming.

......without INT

Troll? Why are you doing this? It isn't a good challenge I guess.

[Hercules]

Look this code:

Code: Select all

Begin:
in al,64h
test al,1
jz Begin
test al,20h
jnz Begin

Why my keylogger with this part of code lock the keys when I release a key? This code only works whe I press and do NOT release a key. Why?

[Combuster]

I hear echoes.

Should I post echoes?

[iansjack]

Look this code:

Code: Select all

Begin:
in al,64h
test al,1
jz Begin
test al,20h
jnz Begin

Why my keylogger with this part of code lock the keys when I release a key? This code only works whe I press and do NOT release a key. Why?

You've already been told the answer to this question. Do you believe that if you ask it enough times the truth will magically change?

Insanity: doing the same thing over and over again and expecting different results.

Albert Einstein