OllyDBG and offsets

Hello for everybody.
First of all I want to say Sorry for my poor english.
I tryed to googling, but found nothing, maybe I'm just blind or something else, but I want to learn How to found offsets anything I need on any main.exe and How to calculate my own offset to replace the default offset from main, like this one:
SetByte(0x0040B4C5,0x50);
Here I understand that first one (0x0040B4C5) is a default offset from Main.exe and 0x50 is calculated offset from brain, but how calculate the second one and how find first one?


UPD:

I learned something. Now I know what is offsets actually where I see them in Olly.
Now I want to change Elf Soldier Wings to custom ones.
I found an array in my main (1.04e my array is 1171 [not hexed]), so I know how to find Elf's Soldier wear: 12*512+3+1171 = 7318 or 1C96 in hex. So I try to find this item and I found it, that was not so hard, but I was happy as hell :D.
Here is the image of that:

http://s009.radikal.ru/i308/1711/a0/876e5df3613c.png
http://radikal.ru/big/pmu11c7kumvfh

But there is two 1C96 offsets: 005F5B42 and 005F5B4B, so I tryed to edit first, second, both - only crash client, what I did wrong?
My code was:
SetByte ((0x005F5B42 + 6),(BYTE)7366); for first one
and
SetByte((0x005F5B4B + 6),(BYTE)7366); for second one.

example max create character main 1.04d/e

https://i.imgur.com/7E3xHIU.png

Code:

---

offset 0x004030D1 | value 0x7
=>
for (int i = 0; i < 7; ++i )
{
}

---

https://i.imgur.com/BIp3riQ.png

Code:

---

=> SetByte(0x004030D1 + 3,0x7);

---

Quote:

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Originally Posted by myheart

example max create character main 1.04d/e

https://i.imgur.com/7E3xHIU.png

Code:

---

offset 0x004030D1 | value 0x7

---

https://i.imgur.com/BIp3riQ.png

Code:

---

=> SetByte(0x004030D1 + 3,0x7);

---

---

Thanks for answer and sorry, because I dont really understand HOW u found an offset of creating character, and what did u changed ? Maximum players to create = 4? or what?

Tell me, please, from the start, how u open main.exe in OllyDBG, do u debug it, what are you doing to find offset of something u need and etc.

By the way I already pushed 'Like' to you, because thats already more, than nothing.

Quote:

---

Originally Posted by DeluxeGM

Thanks for answer and sorry, because I dont really understand HOW u found an offset of creating character, and what did u changed ? Maximum players to create = 4? or what?

Tell me, please, from the start, how u open main.exe in OllyDBG, do u debug it, what are you doing to find offset of something u need and etc.

By the way I already pushed 'Like' to you, because thats already more, than nothing.

---

SetByte((0x004030D1 + 3),0x7);
season 6 MAX CLASS = 7.| 0x6 = no RF, 0x5 = no SU, 0x4 = no DL,...


run debug and try with Breakpoint
and depend your skill and logic.

Quote:

---

Originally Posted by myheart

SetByte((0x004030D1 + 3),0x7);
season 6 MAX CLASS = 7.| 0x6 = no RF, 0x5 = no SU, 0x4 = no DL,...


run debug and try with Breakpoint
and depend your skill and logic.

---

Ok, understood you, thanks.
BUT to get any offset:
1) Main.exe should be unpacked or not?
2) Should I start my main.exe before I put it in Olly?
3) Should I debug in Olly (F9) main.exe after I put it in Olly?
4) And last one is HOW to find offset I want to get?
Like how u understood offset 0x004030D1 is create character offset? How u found this?

Like what should I do to get offset of Elf Buffer wings?
What I'm thinking about this:
1) Start main.exe, go to elf buffer
2) Put main.exe into olly
3) Debug that
4) Trying to find offset 0x1803 (12*512 + 3 = elf 2nd wings in hex = 1803 = 0x1803, right?)
5) Found nothing. What I'm doing wrong? Cant even understand, sorry that I'm so stupid :(

Still need help with my last message.

- - - Updated - - -

UPDATED FIRST POST, Added new information about situation, maybe now someone can help me.

Quote:

---

Originally Posted by DeluxeGM

Hello for everybody.
But there is two 1C96 offsets: 005F5B42 and 005F5B4B, so I tryed to edit first, second, both - only crash client, what I did wrong?
My code was:
SetByte ((0x005F5B42 + 7),(BYTE)7366); for first one
and
SetByte((0x005F5B4B + 7),(BYTE)7366); for second one.

---

first you need to learn data type ranges.


and

Quote:

---

Originally Posted by DeluxeGM

0x005F5B42
0x005F5B4B

---

isn't Elfsoldier preview function.

Quote:

---

Originally Posted by myheart

first you need to learn data type ranges.


and

isn't Elfsoldier preview function.

---

I understood that There should be +6, but not +7.
But if thats not a elfsoildier preview function, so how to find the right one?
http://s019.radikal.ru/i630/1711/6b/12a0f5ef6b81.png

Bump. Help please.

Solved.
Close thread, please.