CODEWITHSUNDEEP
assemblyx86nasm
rony_t
rony_t

Reputation: 443

What does the lower left pane in OllyDbg displays?

I have assembled the following code using NASM:

global _start

section .data
    var1 DD 0xA1A2A3A4        ; 4 bytes
    var2 DD 0xB1B2B3B4        ; 4 bytes
section .bss
    var3: RESD 1              ; 4 bytes

section .text
_start:
    mov DWORD [var3], 0xC1C2C3C4

I opened the file in OllyDbg and made it execute the instruction: mov DWORD [var3], 0xC1C2C3C4.

This is the state of the lower left pane in OllyDbg after executing this instruction:

enter image description here

What I want to know is what does the lower left pane displays? does it display the data section and the bss section of a process?

If so, then is the size of the data section of a process depends on how many bytes allocated in the data section (in this case 8 bytes)?

Upvotes: 2

Views: 278

Answers (1)

Paweł Łukasik
Paweł Łukasik

Reputation: 4163

The lower section display Memory so you can ask it do display whatever portion you want. By default it focuses on data section. You can check that by opening Memory Map window in Olly and checking the addresses.

enter image description here

But, as I said, you can use 'Go to' command and ask this to show you any mapped part. As for the minimum size I would say that the probably the default minimum is 1000h even if you have less.

Upvotes: 1

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