Remove Captcha on PKO 2 GameServer

[Foxseiz 138]

This guide will teach you how to remove captcha on PKO 2

Author of this guide is V3ct0r, I just posted it as a separate thread so it's visible to anyone.

 

1) Open GameServer.exe in OllyDbg;

2) Select module GameServer (Alt + M);

3) Right click on form with asm code -> Analysis -> Analyse code (Ctrl + A);

4) Then go to address 0x00568CA7 (Ctrl + G);

5) Select code from address 0x00568CA7 to 0x00568CB5. Right click on selection -> Binary edit -> Fill with NOPs:

6) Right click on form with asm code -> Copy to executable -> All modifications. Done.

 

We have deleted code that calls captcha on client.

[Wrexor 61]

You said to select to 0x00568CB5 but in the image NOPs are to 0x00568CB9.

[Foxseiz 138]

Can ask @V3ct0r about that.

[V3ct0r 2,117]

NOPs are from 0x00568CA7 to 0x00568CB9 as on the screenshot.