Can anyone solve this problem with pointer or using other tricks?

[bs6489570]

What I Have 

1. Dump File

2. Field offset 

3. Void or RVA offset

What I know : Finding out the Field offset value using pointer. (The final value locate generally in Anonymous region)  

What I want : Find out the lib offset / void offset / xa range offset (contains the function of that value) of that field offset value using pointer or other trick

Cause lib value can be used for mod menu. (As per i know Xa range values are easy to modify using hex code. so it can be used directly in modmenu and can be modified with simple hex code) 

 

Now how i can i find the void offset of a field offset.