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[MASM32]DLL Injector
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DoomsDay
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PostPosted: Sat Oct 20, 2007 10:22 am    Post subject: [MASM32]DLL Injector Reply with quote

Source included, hope you'll find this usefull (advises\corrections are welcomed).
Link


Last edited by DoomsDay on Sat Apr 05, 2008 1:54 pm; edited 3 times in total
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AJAX88
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PostPosted: Tue Oct 23, 2007 6:43 pm    Post subject: Reply with quote

Nice work Wink
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Hackerdevelopment
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PostPosted: Tue Oct 23, 2007 6:48 pm    Post subject: Reply with quote

wat is this?just want to know.
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HomerSexual
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PostPosted: Tue Oct 23, 2007 6:51 pm    Post subject: Reply with quote

it injects a messagebox into the application. But you can customize it to inject a dll into any app.
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Hackerdevelopment
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PostPosted: Tue Oct 23, 2007 6:58 pm    Post subject: Reply with quote

Ok thanks!
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DeletedUser14087
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PostPosted: Tue Oct 23, 2007 7:18 pm    Post subject: Reply with quote

Great job, but idk masm ;D

if it could be in C/C++/Delphi i'd appreacite Smile
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FerrisBuellerYourMyHero
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PostPosted: Sun Oct 28, 2007 8:32 am    Post subject: Reply with quote

Kaspersky wrote:
Great job, but idk masm ;D

if it could be in C/C++/Delphi i'd appreacite Smile



Kasp! things coded in straight ASM are very fast running and high performance!!!

If you can code it in ASM, then do it!

but you could easily re-create it in c++ or delphi if you wanted too...

but IDK why you'd want to lose some performance by doing that

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DoomsDay
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PostPosted: Sun Oct 28, 2007 9:44 am    Post subject: Reply with quote

Delphi version:
Code:
program Injector;

{$APPTYPE CONSOLE}

uses
  SysUtils, windows, psapi, tlhelp32, inifiles;

var
  WName,PName,DName:string;
  DLLLocation:string;
  ProcessId:DWORD;

procedure PhraseINI();
var
  IniFile:TIniFile;
begin
  if FileExists(GetCurrentDir + '\Injector.ini') then
  begin
    IniFile:=TIniFile.Create(GetCurrentDir + '\Injector.ini');
    WName:=IniFile.ReadString('DLL Injector','Window','');
    PName:=IniFile.ReadString('DLL Injector','Target','notepad.exe');
    DName:=IniFile.ReadString('DLL Injector','DLL','MessageBox.dll');
  end
  else
  begin
    IniFile:=TIniFile.Create(GetCurrentDir + '\Injector.ini');
    IniFile.WriteString('Injector','Window','Untitled - Notepad');
    IniFile.WriteString('Injector','Target','notepad.exe');
    IniFile.WriteString('Injector','DLL','MessageBox.dll');
    PhraseINI();
  end;
end;

procedure GetPID();
var
  TempSnapshot:THandle;
  Process32:TProcessEntry32;
begin
  while (ProcessId=0) do
  begin
    TempSnapshot:=CreateToolhelp32Snapshot(TH32CS_SNAPALL,0);
    Process32First(TempSnapshot,Process32);
    while Process32Next(TempSnapshot,Process32) do
      begin
        if Process32.szExeFile = PName then
            ProcessId:=Process32.th32ProcessID;
      end;
    CloseHandle(TempSnapshot);
  end;
end;

procedure InjectDLL();
var
  Process:THandle;
  TempHandle:THandle;
  AllocatedRegion:pointer;
  Empty:DWORD;
  NumberOfBytesWritten:Cardinal;
begin
  Process:=OpenProcess(PROCESS_ALL_ACCESS,False,ProcessId);
  AllocatedRegion:=VirtualAllocEx(Process,NIL,length(DLLLocation),MEM_COMMIT,PAGE_EXECUTE_READWRITE);
  WriteProcessMemory(Process,AllocatedRegion,pchar(DLLLocation),length(DLLLocation),NumberOfBytesWritten);
  if WName='' then
    sleep(750)
  else
    while FindWindow(nil,pchar(WName))=0 do
      sleep(10);
  TempHandle:=CreateRemoteThread(Process,nil,0,GetProcAddress(GetModuleHandle('kernel32.dll'),'LoadLibraryA'),AllocatedRegion,0,Empty);
  WaitForSingleObject(TempHandle,INFINITE);
  CloseHandle(TempHandle);
end;

begin
  PhraseINI();
  Writeln('- DLL Injector -'+#$0A+#$0D+'----------------');
  DLLLocation:=GetCurrentDir()+'\'+DName;
  if not FileExists(DLLLocation) then
  begin
    Writeln('Unable to locate the DLL');
    sleep(7000);
    exitprocess(0);
  end;
  Writeln('Waiting for process: '+PName);
  GetPID();
  Writeln(' - Process found'+#$0A+#$0D);
  Writeln('Injecting '+DName+' into '+PName);
  InjectDLL();
  Writeln(' - DLL injected');
  sleep(7000);
end.


Last edited by DoomsDay on Sun Oct 28, 2007 2:00 pm; edited 1 time in total
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DeletedUser14087
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PostPosted: Sun Oct 28, 2007 12:28 pm    Post subject: Reply with quote

Thanks DoomsDay ! Very Happy
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giveme
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PostPosted: Wed Oct 31, 2007 8:16 pm    Post subject: Reply with quote

can u make the injector to inject 3 dlls into 3different process?
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charch84
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PostPosted: Sat Apr 05, 2008 10:40 am    Post subject: Reply with quote

Thanks so much DoomsDay! Works well Cool
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NothingToShow
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PostPosted: Sat Apr 05, 2008 12:47 pm    Post subject: Reply with quote

So, can you make a DLL which contains a ShowMessage, and then it would pop up in the application we injected it in?
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HolyBlah
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PostPosted: Sat Apr 05, 2008 1:22 pm    Post subject: Reply with quote

Moller wrote:
So, can you make a DLL which contains a ShowMessage, and then it would pop up in the application we injected it in?
Sure, just call it in the DLLMain procedure.
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atom0s
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PostPosted: Sat Apr 05, 2008 3:47 pm    Post subject: Reply with quote

charch84 wrote:
Thanks so much DoomsDay! Works well Cool


You bumped this even though the link is dead, saying 'works well' lol...?

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NothingToShow
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PostPosted: Sun Apr 06, 2008 1:40 am    Post subject: Reply with quote

Wiccaan wrote:
charch84 wrote:
Thanks so much DoomsDay! Works well Cool


You bumped this even though the link is dead, saying 'works well' lol...?

I think he ment the delphi one.
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