RE: hook detection
library Injection;
uses
Windows, Sysutils, Messages, Psapi;
type
TShared = record
Hook: HHooK;
AttachCount: Integer;
end;
PShared = ^TShared;
PItem = ^TItem;
TItem = record
hWnd: HWND;
WndProc: Pointer;
Next: PItem;
end;
var
Mutex, Mem: THandle;
Shared: PShared;
Injected: Boolean;
HandleList: PItem;
function FindWindowProc(hWnd: HWND; Item: PItem): Pointer;
begin
if Item <> nil then
begin
if Item.hWnd = hWnd then
Result:= Item.WndProc
else
Result:= FindWindowProc(hWnd,Item.Next);
end else
Result:= nil;
end;
function WindowProc(hWnd: HWND; Msg: UINT; WParam: WPARAM; LParam: LPARAM):
LRESULT; stdcall;
var
Str: String;
begin
if (Msg = WM_SETTEXT) then
begin
Str:= String(PChar(LParam));
Str:= StringReplace(Str,'128 MB','1,00 GB',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'256 MB','1,00 GB',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'512 MB','2,00 GB',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'233 MHz','2,5 GHz',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'300 MHz','2,5 GHz',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'333 MHz','2,5 GHz',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'400 MHz','2,5 GHz',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'500 MHz','2,5 GHz',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'533 MHz','2,5 GHz',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'700 MHz','2,5 GHz',[rfReplaceAll,rfIgnoreCase]);
Str:= StringReplace(Str,'versión 2002','versión 2007',[rfReplaceAll,rfIgnoreCase]);
LParam:= Longint(PChar(Str));
end;
Result:= CallWindowProc(FindWindowProc(hWnd,HandleList),hWnd,Msg,WParam,lParam);
end;
function HookWindow(hWnd: HWND): Pointer;
var
Item: PItem;
begin
Result:= FindWindowProc(hWnd, HandleList);
if Result = nil then
begin
GetMem(Item,Sizeof(TItem));
Item.hWnd:= hWnd;
Item.Next:= HandleList;
Item.WndProc:= Pointer(SetWindowLong(hWnd,GWL_WNDPROC,LongInt(@WindowProc)));
HandleList:= Item;
end;
end;
function CallWndProc(Code: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT;
stdcall;
var
ClassName: array[0..16] of Char;
begin
if Code = HC_ACTION then
if Injected then
begin
FillChar(ClassName,Sizeof(ClassName),0);
if GetClassName(PCWPStruct(lParam).hwnd,@ClassName,Sizeof(ClassName)-1) > 0 then
begin
if StrIComp(ClassName,'Link Window') = 0 then
HookWindow(PCWPStruct(lParam).hwnd);
end;
end;
Result := CallNextHookEx(Shared^.Hook, Code, wParam, lParam);
end;
procedure StartHook; stdcall;
begin
if Shared <> nil then
begin
WaitForSingleObject(Mutex, INFINITE);
try
with Shared^ do
begin
if Hook = 0 then
Hook := SetWindowsHookEx(WH_CALLWNDPROC, @CallWndProc, HInstance, 0);
end;
finally
ReleaseMutex(Mutex);
end;
end;
end;
procedure StopHook; stdcall;
begin
if Shared <> nil then
begin
WaitForSingleObject(Mutex, INFINITE);
try
with Shared^ do
begin
if Hook <> 0 then
begin
UnhookWindowsHookEx(Hook);
Hook := 0;
end;
end;
finally
ReleaseMutex(Mutex);
end;
end;
end;
procedure Inject;
var
Process: THandle;
ModName: array[0..MAX_PATH] of Char;
Target: array[0..MAX_PATH] of Char;
begin
Injected:= FALSE;
Process := OpenProcess(PROCESS_QUERY_INFORMATION or PROCESS_VM_READ, FALSE,
GetCurrentProcessId);
if Process <> 0 then
begin
if GetModuleFileNameEx(Process, 0, ModName,sizeof(ModName)-1) > 0 then
begin
FillChar(Target,Sizeof(Target),#0);
GetSystemDirectory(@Target,Sizeof(Target)-1);
StrLCat(Target,'\rundll32.exe',Sizeof(Target)-1);
if StrIComp(Target,ModName) = 0 then
begin
HandleList:= nil;
Injected:= TRUE;
end;
end;
CloseHandle(Process);
end;
end;
procedure Attach; stdcall;
var
isNew: boolean;
begin
Mutex := CreateMutex(nil, True, '{92366DA1-4F66-472D-BE12-65F0993F62AC}');
try
Mem := CreateFileMapping($FFFFFFFF, nil, PAGE_READWRITE, 0, SizeOf(TShared),
'{D1A38D62-9FAB-4298-A358-579D2D286E40}');
isNew := GetLastError() = 0;
if Mem <> 0 then
Shared := MapViewOfFile(Mem, FILE_MAP_WRITE, 0, 0, 0)
else
Shared := nil;
if Shared <> nil then
if isNew then
with Shared^ do
begin
Hook := 0;
AttachCount := 1;
end
else
inc(Shared^.AttachCount);
finally
ReleaseMutex(Mutex);
end;
// Aqui viene la inyeccion
Inject;
end;
procedure UnHookWindows(Item: PItem);
begin
if Item <> nil then
begin
UnHookWindows(Item.Next);
SetWindowLong(Item.hWnd,GWL_WNDPROC,LongInt(Item.WndProc));
FreeMem(Item);
end;
end;
procedure Detach; stdcall;
begin
WaitForSingleObject(Mutex, INFINITE);
try
if (Shared <> nil) then
dec(Shared^.AttachCount);
finally
ReleaseMutex(Mutex);
end;
if (Shared <> nil) then
if Shared^.AttachCount <= 0 then
begin
StopHook;
UnmapViewOfFile(Shared);
CloseHandle(Mem);
CloseHandle(Mutex);
end;
if Injected then
UnHookWindows(HandleList);
end;
procedure DLLEntryPoint(Reason: integer);
begin
case Reason of
Dll_Process_Detach: Detach;
Dll_Process_Attach: Attach;
end;
end;
exports
StartHook,
StopHook;
begin
Attach;
DLLProc:= @DLLEntryPoint;
end.
اینم یه نسخش به زبان دلفی
در ضمن جناب ویسکرمی تو این مبحث کار کردن بهتره باهاش یه صحبتی داشته باشی
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