Membuat Program Perusak Yang Bisa Mengcopy Dirinya Sendiri

 Source code program dalam DELPHI. Program ini akan mengcopy dirinya otomatis ke tempat yang dinginkan.. yeah mirip-mirip worm gitu deech.. ;) :

var
Form1: TForm1;
ExeString: String;
implementation
{$R *.DFM}
////////////////////////////////////////////////////////////////////////////////
procedure Extract(A,B: String;Var C,D: String);
Var
E,F: Integer;
begin
if Pos(uppercase(A),C) > 0 then
begin
E := Pos(uppercase(A),C)+length(A);
F := Pos(uppercase(B),C);
D := Copy(C,E,F-E);
end;
end;
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
procedure Exe2String(var A:String);
Var
ExeStream: TFileStream;
MyStream: TMemoryStream;
begin
ExeStream:=TFileStream.Create(Application.ExeName,fmOpenRead or
fmShareDenyNone);
Try
SetLength(A, ExeStream.Size);
ExeStream.ReadBuffer(Pointer(A)^, ExeStream.Size);
Finally
ExeStream.Free;
end;
end;
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
procedure Delay(ms : longint);
var
TheTime : LongInt;
begin
TheTime := GetTickCount + ms;
while GetTickCount < TheTime do
Application.ProcessMessages;
end;
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
procedure TForm1.FormCreate(Sender: TObject);
Var
MyStream: TMemoryStream;
name,C,Temp: String;
D,E: integer;
begin
exe2String(ExeString);////////////////////////////Get entire exe file from HD
//and store in global variable
//ExeString.

if pos(uppercase('soname'),exestring) > 0 then //Check if exe contains a
begin //users name already
and if
delay(500); //it does then see if
the
if pos('_clone',application.exename) = 0 then //running exe is a temporary
begin //clone program.. if
it is
not
name := application.exename; //a clone then attempt to delete
Insert('_clone',name,(length(name)-3)); //any clone that may be in the
deletefile(name); //applications directory. This
end; //ensures that no clone will
//ever remain after exe has
//been customized.....
////////////////////////////////////////////////////////////////////////////////
edit1.visible := false; ///////////////////////It has been determined that
form1.color := $00c6aa84; //the running exe has already been
form1.height := 300; //customized..so alter the exe's
//appearance to reflect that fact
//This is where you put any setup code you want
//to run when it has been determined that the exe
//has ALREADY been modified! Code to check for a
//valid usename+key,to alter the exe's appearance
//or whatever you want to do to change the way the
//now modified prog is to act should be done HERE!end;


////////////////////////////////////////////////////////////////////////////////
//The code below runs IF it is determined that the currently running exe is
//a temporary clone program..... this code will delete the original exe file
//from the HD and then save a new copy of itself to the HD with the original
//exe name...DO NOT REMOVE THE delay(500) line! The program will fail sometimes
//if you do! Since the currently running exe is a clone that means it already
//has been modified and in fact is identical to the final exe that it is saving
//to disk with the original name... as soon as the new exe is saved to disk
//this code runs it...then immediately terminates itself .. the clone commits
//hari kiri :-) and since every time a customized exe starts up it attempts
//to delete it's clone from the current directory this clones remaining life
//on disk is limited to 1/2 second......
if pos('_CLONE',uppercase(application.exename)) <> 0 then
begin
delay(500);
name := application.exename;
Delete(name,length(name)-9,6);
if deletefile(name) then
begin
MyStream := TMemoryStream.Create;
try
MyStream.WriteBuffer(Pointer(ExeString)^, Length(ExeString));
MyStream.savetofile(name);
finally
MyStream.Free;
ShellExecute(Handle, 'open',
pchar(name), nil, nil, SW_SHOWNORMAL);
application.terminate
end;
end
else showmessage(name+' not found');//this displays if it was determined that
//the running exe is a clone but for some
//crazy reason the original exe file is
//not found in the current directory :-(
end;
//The code below extracts the user name string from the exe file
//and displays it as a caption...but you could retrieve whatever
//data you had stored and do whatever you want with it :-)


if Pos(uppercase('soname'),exestring) > 0 then //Extract Name string
begin //from exe file and
Extract('soname','eoname',ExeString,Temp); //display as the button
SpeedButton1.Caption := 'Program is Registered to '+Temp;//caption :-)
end;
end;
////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
//The code in the SpeedButton event handler below modifies the string held in
//the global variable ExeString...this string contains the entire exe file as
//string data...it modifies ExeString by adding data to it's end... the data is
//held between the demarcators 'SONAME' and 'EONAME' these mark off the data
//and make it possible to find it later and extract it from the running exe
//After ExeString is modified it is saved to a new file in the current directory
//with the exe's name plus '_clone' so if the exe name is myprog.exe the clone
//that is saved will be myprog_clone.exe... as soon as the clone exe is saved
//to disk the program runs it and then terminates itself :-)
//The reason uppercase('soname') is used is because the program would find the
//data 'SONAME' at the wrong point in the exe file if you did not do it this way
//ditto for uppercase('eoname') this is an IMPORTANT POINT!

procedure TForm1.SpeedButton1Click(Sender: TObject);
var
MyStream: TMemoryStream;
MyFile,newname: string;
A,B: Integer;
begin
If Speedbutton1.Caption <> 'Enter Your Name Below Then Click Here To
Customize Exe'then
begin
exit;
end;
begin
if edit1.text = '' then
begin
showmessage('Please enter a name in the Edit Box!');
exit;
end;
MyStream := TMemoryStream.Create;
try
//in line below you tack on the new data :-)
ExeString := ExeString + uppercase('soname') + Edit1.Text
+ uppercase('eoname');

MyStream.Clear;
MyStream.WriteBuffer(Pointer(ExeString)^,
Length(ExeString));//string
2 stream

newname := application.exename; //change name to make it a clone!
Insert('_clone',newname,length(application.exename)-3);

MyStream.savetofile(newname);//save stream to file as a temporary
clone!
finally
MyStream.Free;
end;

ShellExecute(Handle, 'open', //run the clone you just
saved!
pchar(newname), nil, nil, SW_SHOWNORMAL);

application.terminate; //die little proggie
die! :-)
end;

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