Welcome back.
We now continue.
So we have already fished out the first three characters.
And then now we entered the first three characters correctly, 932.
The fourth character, fifth, and so on.
We still don't know.
So we click okay now, and hits our breakpoint.
Continue to step over.
Now it's comparing the first character, which is nine.
This is correct.
And then now it's comparing the second character, which is three.
So we are here, nine, three.
Continue stepping.
Now it's going to look back up.
Now is comparing the third character, which is two, which is over here.
So now we are going to look for the fourth character.
So we continue to step.
And over here, click on this.
You see that we entered the fourth character as four, but it is looking for two.
So the fourth character of the serial key, of the serial number, is two.
Okay.
So now we run, and it shows the bad message.
Run again, and this time we are going to enter 9322, 9322, and replace the four with two, and hit okay.
This time we are targeting the fifth character, hits our breakpoint.
Nine.
Three.
Look back.
Two.
Two again.
So we got 9322.
Now we're going to look for the fifth character.
So we step over, look backwards.
This is the fifth character.
Let's see what it is.
We enter five as the fifth character, but it is looking for seven.
So seven is our fifth character of the serial key.
Now we run, and it shows the bad message. Run again.
This time we enter 932279, 932279.
So the fifth character we have just fished out is seven.
The sixth character is our next target.
So we hit enter.
Now hit our breakpoint.
Nine.
Three.
Two.
Look.
Seven.
So we are now at seven character.
We are now at the fifth character.
Next one is going to be the sixth character.
Continue stepping and let's check it out.
So the sixth character, we entered six.
But it is checking for nine.
So that means the sixth character should be nine.
Okay, so we run, that message shows, run again.
And now we are going to enter 932279, 932279, and change the sixth character to nine.
Next one we are going to target the seventh character over here.
Click okay.
We hit our breakpoint.
Now we continue to step over.
This is nine.
Three.
Two.
Seven.
Okay, so we've got this.
Seven.
Next one is nine.
Nine.
Correct.
So now we are going to look for the seventh character.
So let's step over.
Loop.
Click on this, and the seventh character is a null terminator.
- is zero.
If this were a character, you have it will have a quote, a single quote, but it is not.
Therefore, this is a null terminator.
That means our serial key is only 932279, 932279, because the seventh character is a null terminator.
So now we have already fished out the serial password.
Okay, so let's run this, and we are going to test it.
Now click on this, run again.
And we are going to delete all the back one and just leave 932279, 932279.
Sorry.
So let's click okay now to see whether it's right.
Here's our breakpoint, run again.
And we got the good message.
Good work.
So this is how we can do a deep loop tracing to fish out the serial key.
That's all for this video.
In the next one, we will try to do a patching to always show the good message.
No matter what the serial key, you give it a try first before you watch the next one.
Thank you.