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Need example for Lua ASM creation

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zxuiji
Advanced Cheater

Reputation: 1

Joined: 26 Sep 2016
Posts: 70

Posted: Sat Oct 13, 2018 2:54 am Post subject: Need example for Lua ASM creation

I'll start with psuedo code for hat I want:

Code:

function OnActivateAction()
...
mem = allocInHookedApp( size )
src = assembleIntoString(([[jmp %x
nop nop]]):format(mem))
dst = assembleIntoString(([[set 0
return]])
writeBytes( ptr, src )
writeBytes( mem, dst )
...
end

I'm basically importing some scripts made by others into my own table but want the ability to fiddle with them later which is easier to do with lua
_________________

Those who do not trust in christ to save them from their sins will only experience hell when their soul is released from it's earthly vessel.

ParkourPenguin
I post too much

Reputation: 150

Joined: 06 Jul 2014
Posts: 4652

Posted: Sat Oct 13, 2018 9:00 am Post subject:

Use the autoAssemble function to write AA scripts in Lua.

Code:

local myscript = [[
[ENABLE]
aobscan(foo,12 34 ab cd)
registersymbol(foo)
foo+2:
db 56 78
[DISABLE]
foo+2:
db ab cd
unregistersymbol(foo)
]]

-- enable script
local enabled, disableinfo = autoAssemble(myscript)
assert(enabled, 'script did not enable')
-- disable script
local disabled = autoAssemble(myscript, disableinfo)
assert(disabled, 'script did not disable')

_________________

I don't know where I'm going, but I'll figure it out when I get there.

zxuiji
Advanced Cheater

Reputation: 1

Joined: 26 Sep 2016
Posts: 70

Posted: Sun Oct 14, 2018 12:00 pm Post subject:

Forgot about this already XD, I tried what you said but failed to get it working so I tried this little snippet in my memory record builder:

Code:

if x.asm then
r.Type = vtAutoAssembler
r.Script = x.asm

Which seems to respond fine but I got a bug elsewhere in my code preveting me from seeing it working so I will get back to you when I fix it.

Edit: Okay, so I managed to fix the bug and seperated the aobscan out for multiple functions to make use of but now I'm struggling to make the asm (for reference sake the original asm was made by Squall8) part work:

Code:

[ENABLE]
sChocoboUseST:
db 90 90 90 90 90 90 90 90

[DISABLE]
sChocoboUseST:
db F3 0F 11 87 CC 00 00 00

Did have the game running (crashed on me while I was typing this) and have confirmed the symbol is found and exists (got memory record above this entry using the symbol for the address and the type as byte array). Any ideas to why it's not working?

Edit 2: Turns out the asm part wasn't actually executing, I must be missing something then

Edit 3: At long last I got it to work by doing both the Type/Script thing AND your autoAssembler method, result is this section of code:

Code:

r.Type = vtAutoAssembler
r.Script = (asm:format(x.asm.enable,x.asm.disable))
--[[
Named list of internal symbols, so one can see if it is functioning, mrAddOffset is just a wrapper for creating memory records using symbols for their address and name
--]]
if x.internal then
for j,y in pairs(x.internal) do
local tmp = mrAddOffset(y,y)
tmp.appendToEntry(r)
end
end
r.OnActivate = function(r,b,c)
local x = s.findSymbolByIndex(r.Index)
if not x then return false end
local success, info = autoAssemble(r.Script)
if not success then return false end
x.disableInfo = info
return true
end
r.OnDeactivate = function(r,b,c)
local x = s.findSymbolByIndex(r.Index)
if not x or not x.disableInfo then
return false
end
local success, msg = autoAssemble(r.Script,x.disableInfo)
if not success then
print(msg)
return false
end
return true
end
r.OnDestroy = function(r)
r.OnDeactivate(r)
end

_________________

Those who do not trust in christ to save them from their sins will only experience hell when their soul is released from it's earthly vessel.

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