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index vtable and call

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Frouk
Grandmaster Cheater

Reputation: 5

Joined: 22 Jun 2021
Posts: 510

Posted: Sat Sep 03, 2022 10:16 am Post subject: index vtable and call

so i want to do like this:

Code:

return player:GetVTable()[2](...) --Note: custom function in player class, passed through GetVTable function but having a little modified version, still calls function

and i have a little code here:

Code:

function GetVTable(obj, size)
if obj == nil or size == nil then
return nil
end
local vtbl = {}
for i = 0, size / 4 do
vtbl[i] = readPointer(readPointer(obj) + i * 0x4)
end
return vtbl
end

function returns vtable functions values and i wanted to pass the address through my Call functon

Dark Byte
Site Admin

Reputation: 470

Joined: 09 May 2003
Posts: 25791
Location: The netherlands

Posted: Sun Sep 04, 2022 12:10 am Post subject:

instead of

Code:

for i = 0, size / 4 do
vtbl[i] = readPointer(readPointer(obj) + i * 0x4)
end

do something like

Code:

for i = 0, size / 4 do
local address=readPointer(readPointer(obj) + i * 0x4)
vtbl[i] = function(...)
return executeMethod(0, nil, address, obj, <parse parameters here>)
end
end

you just need to parse the ... parameters and it should behave the way you intended in the first part
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Frouk
Grandmaster Cheater

Reputation: 5

Joined: 22 Jun 2021
Posts: 510

Posted: Sun Sep 04, 2022 12:37 am Post subject:

Its exactly what i wanted. Thank you

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