Delphi 如何定义DEP在系统中处于启用状态
DelphiXe;Xp、Vista、Win7、WSrv2008R2 0.支持DEP(数据执行预防)CPUDelphi 如何定义DEP在系统中处于启用状态,delphi,dep,Delphi,Dep,DelphiXe;Xp、Vista、Win7、WSrv2008R2 0.支持DEP(数据执行预防)CPU Function isCpuDEP:bool; begin Result:=... //??? end; 1.如何定义DEP在系统中处于启用状态 Function isEnableDEP:bool; // Win Xp comparable begin Result:=false;if isCpuDEP=false then exit; Result:=... //??? end;
Function isCpuDEP:bool;
begin
Result:=... //???
end;
1.如何定义DEP在系统中处于启用状态
Function isEnableDEP:bool; // Win Xp comparable
begin
Result:=false;if isCpuDEP=false then exit;
Result:=... //???
end;
2.定义是否启用DEP,以及是否为所有程序和服务启用DEP
Function isEnableDEPForAllProgram:bool;
begin
Result:=false;if isEnableDEP=false then exit;
Result:=... //???
end;
3.获取DEP计划列表
Function GetDEPProgramList:TStringList;
begin
Result:=nil;if isEnableDEPForAllProgram=false then exit;
Result:=Tstringlist.Create;
Result:=... //???
end;
WMi类有4个属性,它们报告DEP的状态
- DataExecutionPrevention\u可用
- DataExecutionPrevention\u 32位应用程序
- DataExecutionPrevention\u驱动程序
- 数据执行预防支持策略
{$APPTYPE CONSOLE}
uses
SysUtils,
ActiveX,
ComObj,
Variants;
function DEPStatus(Status : integer) : string;
begin
case Status of
0 : Result:='Always Off';
1 : Result:='DEP is turned off for all 32-bit applications on the computer with no exceptions. This setting is not available for the user interface.';
2 : Result:='DEP is enabled for all 32-bit applications on the computer. This setting is not available for the user interface.';
3 : Result:='DEP is enabled by default for all 32-bit applications. A user or administrator can explicitly remove support for a 32-bit application by adding the application to an exceptions list.';
else
Result:='unknown';
end;
end;
procedure GetDEPStatusInfo;
const
WbemUser ='';
WbemPassword ='';
WbemComputer ='localhost';
wbemFlagForwardOnly = $00000020;
var
FSWbemLocator : OLEVariant;
FWMIService : OLEVariant;
FWbemObjectSet: OLEVariant;
FWbemObject : OLEVariant;
oEnum : IEnumvariant;
iValue : LongWord;
begin;
FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
FWMIService := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);
FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM Win32_OperatingSystem','WQL',wbemFlagForwardOnly);
oEnum := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
if oEnum.Next(1, FWbemObject, iValue) = 0 then
begin
Writeln(Format('DataExecutionPrevention_32BitApplications %s',[FWbemObject.DataExecutionPrevention_32BitApplications]));// Boolean
Writeln(Format('DataExecutionPrevention_Available %s',[FWbemObject.DataExecutionPrevention_Available]));// Boolean
Writeln(Format('DataExecutionPrevention_Drivers %s',[FWbemObject.DataExecutionPrevention_Drivers]));// Boolean
Writeln(Format('DataExecutionPrevention_SupportPolicy %s',[FWbemObject.DataExecutionPrevention_SupportPolicy]));// Uint8
Writeln(DEPStatus(FWbemObject.DataExecutionPrevention_SupportPolicy));
end;
end;
begin
try
CoInitialize(nil);
try
GetDEPStatusInfo;
finally
CoUninitialize;
end;
except
on E:EOleException do
Writeln(Format('EOleException %s %x', [E.Message,E.ErrorCode]));
on E:Exception do
Writeln(E.Classname, ':', E.Message);
end;
Writeln('Press Enter to exit');
Readln;
end.
这里有一个简单但非正统的检查DEP的方法,但它只适用于当前程序
function IsDepOn:Boolean;
var
shellcode : array [0..1] of byte;
begin
shellcode[0] := $90;
shellcode[1] := $C3;
try
asm
lea eax,shellcode
call eax
end;
Result:=False;
except
Result:=True;
end;
end;
以下用于第(1)点:
对于第(2)点,您可以使用类似的方式
对于第(3)点,您可以枚举进程并找出与DEP一起运行的进程。我有.NET背景,但可以帮助回答第一个和第二个问题。尝试在我们使用System.Process的.NET中运行以下wmic OS Get DataExecutionPrevention_SupportPolicy。0=AlwaysOff–DEP对所有进程禁用,1=AlwaysOn–DEP对所有进程启用,2=OptIn–DEP为Windows系统组件和服务启用,3=OptOut–DEP为所有进程启用。要获取DEP例外列表,必须检查Windows注册表项
HKEY\U LOCAL\u MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
,并使用该值筛选所有条目DisableNXShowUI
type
TGetProcessDEPPolicy =
function(Process: THandle; out Flags: DWORD; out Permanent: Bool): Bool; stdcall;
const
PROCESS_DEP_ENABLE = $00000001;
PROCESS_DEP_DISABLE_ATL_THUNK_EMULATION = $00000002;
procedure TForm1.Button1Click(Sender: TObject);
var
GetProcessDEPPolicy: TGetProcessDEPPolicy;
DEPFlags: DWORD;
IsPermanent: Bool;
begin
@GetProcessDEPPolicy :=
GetProcAddress(GetModuleHandle(kernel32), 'GetProcessDEPPolicy');
if Assigned(GetProcessDEPPolicy) then begin
if GetProcessDEPPolicy(GetCurrentProcess, DEPFlags, IsPermanent) then begin
if (DEPFlags and PROCESS_DEP_ENABLE) = PROCESS_DEP_ENABLE then
ShowMessage('DEP enabled')
else
ShowMessage('DEP disabled');
end else
raise EOSError.Create(SysErrorMessage(GetLastError));
end else
raise EOSError.Create('Unsupported OS');
end;