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i am new to assembly programming. First i thank to member of tuts4you for being helpful in needy times. 

I am learning assembly from online and books.

i am stuck on point. I am having problem using 

1. lea eax, [esp-04h*2]

2. mov [ebx-04h], bp ;

3. cmp [esi+eax-06h], 'KCUF'

4. cmp word ptr [ebx+18h], 01h

5. cmp dword ptr [esi], 00455000h

or similar code snippet.

Thanks, I know this is very basic question to ask but i wanna learn from here as well.

Please take some moment and explain what address mode it is and what does the code do. 

Thanks