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sitapea1337
Newbie cheater
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Joined: 29 Mar 2010
Posts: 19
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 Posted: Thu Aug 16, 2012 6:51 am Post subject: New to LUA |
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Hello
I've been trying to get this script working, but no success.
It does print address quite fine (in HEX), but doesn't change value of address to "08".
| Code: | function DEC_HEX(IN)
local B,K,OUT,I,D=16,"0123456789ABCDEF","",0
while IN>0 do
I=I+1
IN,D=math.floor(IN/B),math.mod(IN,B)+1
OUT=string.sub(K,D,D)..OUT
end
return OUT
end
debugProcess() -- Attach Debugger to the process.
function debugger_onBreakpoint()
HEXADDR=DEC_HEX(ESI+19105885)
print(HEXADDR)
writeInteger(HEXADDR,08)
return 1 --Not Break
end
debug_setBreakpoint(0x005057C2) -- Address where to set breakpoint |
Weird thing is that when I print "ESI" value, then it's in dec, not hex.
So do I need to convert "ESI+19105885" into HEX or I can simply change that address value while it's in DEC?
PS: Is it possible to breakpoint address "test.exe+1057C2"?
"debug_setBreakpoint(test.exe+0x1057C2)" doesn't work.
Thanks in advance,
Sitapea1337
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oLaudix
Expert Cheater
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Joined: 25 Mar 2010
Posts: 138
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| Posted: Thu Aug 16, 2012 8:40 am Post subject: |
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| Do you want to use ESI as value it stores or [ESI] as address under which the value is stored? I dont know how LUA in cheat engine handle this stuff but when i tried to get addresses they were coming out in string -_-
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Dark Byte
Site Admin
 Reputation: 470
Joined: 09 May 2003
Posts: 25807
Location: The netherlands
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| Posted: Thu Aug 16, 2012 8:47 am Post subject: |
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Use getAddress.
getAddress takes a string formatted in ce's symbolhandler and returns the address as a value
two methods
1:
address=getAddress("test.exe")+0x1057c2
2:
address=getAddress("test.exe+1057c2")
and then debug_setBreakpoint(address)
use getAddress to get the
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sitapea1337
Newbie cheater
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Joined: 29 Mar 2010
Posts: 19
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| Posted: Thu Aug 16, 2012 8:59 am Post subject: |
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| oLaudix wrote: | | Do you want to use ESI as value it stores or [ESI] as address under which the value is stored? I dont know how LUA in cheat engine handle this stuff but when i tried to get addresses they were coming out in string -_- |
Value which ESI stores - not the address of ESI.
At the moment print shows ESI value as decimal.
| Code: | HEXADDR=DEC_HEX(ESI+19105885)
print(HEXADDR)
writeInteger(HEXADDR,08) |
Shows correct address, but "writeInteger(HEXADDR,0 " part doesn't change the value of address, which HEXADDR contains, to "08".
| Dark Byte wrote: | Use getAddress.
getAddress takes a string formatted in ce's symbolhandler and returns the address as a value
two methods
1:
address=getAddress("test.exe")+0x1057c2
2:
address=getAddress("test.exe+1057c2")
and then debug_setBreakpoint(address)
use getAddress to get the |
Thank you very much - works perfectly 
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oLaudix
Expert Cheater
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Joined: 25 Mar 2010
Posts: 138
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| Posted: Thu Aug 16, 2012 9:34 am Post subject: |
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| Oh, now i know what you mean. I dont really know if LUA treats HEXADDR as int in this place. Try $HEXADDR.
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sitapea1337
Newbie cheater
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Joined: 29 Mar 2010
Posts: 19
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| Posted: Thu Aug 16, 2012 11:29 am Post subject: |
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Nope - only gives an error.
Print prints HEXADDR correctly - as HEX address-
Though "writeInteger" doesn't change that addresses value...
Is "writeInteger" even the right command for changing memory address value?
EDIT: It seems like that DEC_HEX function returns string value which cannot be used.
Though - "ESI+0x123885D" returns decimal value, it still is correct (tested manually with calculator).
How can I use that decimal value as address? I'd like to change "ESI+0x123885D" address value to "08".
Manually, when address is in HEX, using writeInteger works perfectly.
I think right now the problem is that "ESI+0x123885D" returns as DEC, not HEX, so I can't use it as an address...
Could anyone help me out here? It's the only problem that's standing in my way...
EDIT2:
I feel a bit stupid... I'm trying to change that addresses value and it does change, but very soon after it gets changed again to normal.
Breakpoint hits BEFORE actual ASM code.
I set breakpoint to next address and now my code works fine
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