远程得到任意远程NT主机帐号List的源代码

　　由于看到前些日子retina里有个不需要预先知道帐号就可以获取一般任意
目标NT主机帐号的功能。几个月之前，我为了弄清原理，就做了一个工具。
这次整理硬盘，发现了这个小工具，这本身并不算什么，因为ISS scanner等
软件都包含了这类功能。但是我希望大家能够通过这个例子，了解一些NT的
API和安全性知识。

-- 完整的code(use Delphi)和一个编译好的zip文件在
ftp://202.96.215.252/incoming/sea/getuser.zip

这里贴一下程序的主要代码段：
unit Unit1;
{ 这是一个演示如何去获取目标NT计算机上用户列表的程序，
由于Win32 API的限制，此程序只能在NT平台上正确运行。
由于是为了演示原理，所以没有使用多线程，也没有考虑太高
的健壮性，希望诸位海涵。欢迎和我联系

Vader Yang
[email protected]}
interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dia

logs,
StdCtrls, ComCtrls, ExtCtrls;
// 省略 若干行
{...}

{$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);

var
seaNetResource:NETRESOURCE;
seaResult:DWORD;
seaAccessBuffer:string[255];
seaAccessBufferLength:DWORD;
sidbuffer:string[255];
lpAccessBuffer:PChar;
seaSID:PSID;
seaSIDlength:DWORD;
seaReferencedDomainName:string[255];
seaReferencedDomainNameLength:DWORD;
lpReferencedDomainName:PChar;
seaSIDnameuse:SID_NAME_USE;
tempPchar:Pchar;
SidSubCount:PUCHAR;
i,j:integer;
StoreCount:byte;
tempPDWORD:PDWORD;
tempDWORD:DWORD;
storeSIDsub: array [0..8] of Integer;
seaSidIdentify:PSIDIdentifierAuthority;
newSID:PSID;
seaAccountBuffer:String[255];
pAccountName:LPTSTR;
AccountLength:DWORD;
BlResult:Boolean;
const
AccountType:array [0..8] of string=('','User','Group','Domain','al

ias',
'WelknowGroup','Deleted','Invalid','Unknown');

begin
Button1.Enabled:=False;
lpAccessBuffer:=@seaAccessBuffer;
lpReferencedDomainName:=@seaReferencedDomainName;
seaSID:=@sidbuffer;
seaAccessBufferLength:=64;
seaSIDLength:=255;
seaReferencedDomainNameLength:=255;
seaNetResource.dwScope:=RESOURCE_GLOBALNET;
seaNetResource.dwType:=RESOURCETYPE_ANY;
seaNetResource.lpLocalName:=PChar('');
seaNetResource.lpRemoteName:=PChar('\\'+EdtHostName.Text+'\IPC$');

seaNetResource.lpProvider:=PChar('');
seaResult:=WNetAddConnection2(seaNetResource,PChar(''),PChar(''),C

ONNECT_PROMPT);
if seaResult=NO_ERROR then
begin
if LookupAccountName(PChar('\\'+EdtHostName.Text),Pchar(seedl

ine),seaSID,seaSIDlength,
lpReferencedDomainName,seaReferencedDomainNamelength,seaS

IDnameuse)
then
begin
cpDomain.Caption:=string(lpReferencedDomainName);
seaSidIdentify:=GetSidIdentifierAuthority(seaSID);
SidSubCount:=GetSidSubAuthorityCount(seaSID);
StoreCount:=SidSubCount^;

for i:=0 to Integer(StoreCount)-1 do
begin
tempPDWORD:=GetSidSubAuthority(seaSID,i);
storeSIDsub[i]:=tempPDWORD^;
end;

//start to get username
pAccountName:=@seaAccountBuffer ;
seaReferencedDomainNameLength:=255;
AccountLength:=255;
storeSIDsub[StoreCount-1]:=500;
if AllocateAndInitializeSid(seaSidIdentify^,SidSubCount^

,StoreSidSub[0],
StoreSidSub[1],StoreSidSub[2],StoreSidSub[3],StoreSidSub

[4],
StoreSidSub[5],StoreSidSub[6],StoreSidSub[7],newSID) the

n
begin

if LookupAccountSid(PChar('\\'+EdtHostName.Text),ne

wsid,
pAccountName,AccountLength,lpReferencedDomainName,

seaReferencedDomainNameLength,seaSIDnameuse)
then
begin
lbAdmin.Caption:=String(pAccountName);
ListBox1.Items.Add('\\'+lpReferencedDomainName+

'\'+pAccountName+' Built-in Admin');
end
else
exit;
FreeSid(newSID);
//tempDWORD:=GetLastError;
j:=1;
i:=1000;
while j<=30 do
begin
seaReferencedDomainNamelength:=255;
AccountLength:=255;
StoreSidSub[StoreCount-1]:=i;
AllocateAndInitializeSid(seaSidIdentify^,SidSu

bCount^,StoreSidSub[0],
StoreSidSub[1],StoreSidSub[2],StoreSidSub

[3],StoreSidSub[4],
StoreSidSub[5],StoreSidSub[6],StoreSidSub

[7],newSID);
if LookupAccountSid(PChar('\\'+EdtHostName.Tex

t),newsid,
pAccountName,AccountLength,lpReferencedDo

mainName,
seaReferencedDomainNameLength,seaSIDnameu

se)
then
begin
if seaSIDnameuse=sidTypeInvalid then j:=j+1
else if seaSIDnameuse<>sidTypeDeletedAccount t

hen
begin
j:=0;
ListBox1.Items.Add('\\'+lpReferencedDomainN

ame+
'\'+pAccountName+' '+AccountType

[seaSIDnameuse]);
StatusBar1.SimpleText:=pAccountName;
end;
end
else
j:=j+1;
Application.ProcessMessages;
i:=i+1;
FreeSID(newsid);
end;
end;

end
else ShowMessage('Cannot locate sid infomation!');
end
else ShowMessage('Connection Error!');
WNetCancelConnection2(PChar('\\'+EdtHostName.Text+'\IPC$'),0,true)

;
Button1.Enabled:=True;
end;

{以后code 省略}