[Tutorial] Same-sex marriage in perfect world properly done

[Bola]

------------------- server -------------------

Open libtask.so in IDA Pro

Go to function ATaskTempl:CheckMarriage(Task Interface*)

in IDA View-A
search for this

cmp al, [ebp+m2.m_bMale]



click on jnz
Go to Menu > Edit > Patch Program > Change Byte

change the first byte 75 to EB

Go to Menu > Edit > Patch Program > Apply Patches to input file.

------------------- client -------------------

this is the hardest part since client doesnt have debug symbols, we have to find using strings and things to be used as reference.

i have looked at source code from client leaked by scena, and we can find a function called CheckMarriage inside TaskTempl.inl, then i check where this function is called, and i find one that has a string to be tracked, so lets start this part.

first you gonna press on IDA View, then press CTRL + T and search for this string "CheckPrerequisite: ret"
press F5 so you will find a giant IF Else code, this code will looks like this.



then you will need to find the function checkmarriage, i have set a comentary block in picture down bellow but you can find yourself looking for a function that first return is value 51 and next returns is 20 until return 0.



after you click on function, it will looks like this



select the last IF that return 20 code, press tab to return on IDA Pro View with the jz selected,

Go to Menu > Edit > Patch Program > Change Byte

change the first byte 74 to EB ( maybe can be 75, it depends on the compiler decision, replace by EB anyway )




Go to Menu > Edit > Patch Program > Apply Patches to input file.

-----------------------------------------
Create box with quest mission,
use in party and complete in NPC.

-----------------------------------------------------------

credits to @Scena that shares source code from perfect world to the public that could make this guide possible.

here the source code references for the client code above.

[MentaL]

[Teemo Cell]

Looks really good and it works. Tyvm for the Tut.

[jv90]

In 1.5.3 I made these exact changes to libtask.so and in the elementclient I found two byte sequences within the same function that match the one at the end for that function that has 51 20 20 20 and return 0.

Did all the patches correctly but we still can't take the items to npc and marry two of the same gender it feels like another layer of protection somewhere. Tasks.data is correctly configured, Can we only marry via box?

[Bola]

In 1.5.3 I made these exact changes to libtask.so and in the elementclient I found two byte sequences within the same function that match the one at the end for that function that has 51 20 20 20 and return 0.

Did all the patches correctly but we still can't take the items to npc and marry two of the same gender it feels like another layer of protection somewhere. Tasks.data is correctly configured, Can we only marry via box?

Clone the two existent tasks for marriage, and set on those two new tasks, the requirement for marriage for any type, then place a new item for sure, both for same task if you want, then you free to go

[jv90]

So the specific item ids and specific task IDs cause a problem / limitation?