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4jax_cheater
Cheater
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Joined: 14 Apr 2009
Posts: 31
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 Posted: Wed Feb 03, 2010 6:13 pm Post subject: Scan MemoryAddress 004000 x 7FFFFFF help dark byte |
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dark byte hello, I'm making a memory editor and found a code in the programming of cheatengine here ... it is possible to scan in memoryaddress 00400000 x 7FFFFFFFF?real values!
with this code? :
| Quote: | var
canberead:MEMORY_BASIC_INFORMATION;
SystemInfo: SYSTEM_INFO;
startaddress,endaddress,eaddress:dword;
PageSize:cardinal;
temp:dword;
data:Array[0..004000] of dword;
scan:integer;
PidHandle:Thandle;
begin
if GetProcessID(ProgramName, PidId) then
begin
startaddress:=($00400000);
endaddress:=($7FFFFFFF);
eaddress:=startaddress;
GetSystemInfo(SystemInfo);
PageSize:=Systeminfo.dwPageSize;
scan:=0;
PidHandle := OpenProcess(PROCESS_ALL_ACCESS,False,PidId);
repeat
if ReadProcessMemory(PidHandle, Pointer(eaddress),@data,PageSize,temp)=false then
begin
Virtualqueryex(PidHandle,pointer(eaddress),canberead,PageSize);
ReadProcessMemory(PidHandle, Pointer(canberead.BaseAddress),@data,canberead.RegionSize,temp);
end;
repeat
if data[scan]=strtoint(Edit1.Text) then
begin
ValueListEditor1.InsertRow(inttostr(scan+eaddress),Edit1.Text,true);
end;
scan:=scan+1;
until scan=PageSize+1;
until eaddress=endaddress+1;
end;
end; |
thanks...
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Dark Byte
Site Admin
 Reputation: 470
Joined: 09 May 2003
Posts: 25788
Location: The netherlands
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| Posted: Wed Feb 03, 2010 8:28 pm Post subject: |
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No, you'll get into a problem with canberead.RegionSize and a static array
VirtualQueryEx can put a value bigger than 16004 bytes into canberead.RegionSize, so you're going to cause a big memory problem.
I recommend a dynamic array you change after each call to virtualqueryex to take on the biggest size, or enumerate all the regions before calling and then find the biggest region
also, your compare routine is slow, it calls strtoint for every address, I bet you can store the result of that inside a variable
and you're initializing scan to 0 at the wrong spot, do it after the first repeat statement
and, just for neatness: Virtualqueryex needs the size of the memory_basic_information structure
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4jax_cheater
Cheater
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Joined: 14 Apr 2009
Posts: 31
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| Posted: Thu Feb 04, 2010 7:12 am Post subject: |
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| thanks dark byte!
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