OWASP Security Shepherd's SQL Injection Challenge 5 focuses on Boolean-based Blind SQL Injection, requiring users to extract hidden data by inputting TRUE/FALSE queries to infer information. Attackers exploit this by analyzing application responses to guess characters one-by-one using SQL functions like SUBSTRING()
OWASP Security Shepherd SQL Injection Challenge 5 (also known as SQL Injection Escaping) focuses on bypassing filters that attempt to escape or remove single quotes to prevent injection. Challenge Overview The objective is to obtain a VIP Coupon Code
to complete a purchase without being charged, which ultimately reveals the result key. Exploitation Steps Identify the Filter : Standard payloads like ' OR 1=1;--
often fail because the application specifically removes or escapes the single quote character ( Bypass Technique backslash (
to escape the application's own escaping mechanism or to manipulate how the query interprets the next character. Sql Injection Challenge 5 Security Shepherd
By inputting a backslash in the username field, you effectively "neutralize" the closing quote of that field in the backend SQL query, causing the query to treat the subsequent AND password= portion as part of the string. The Payload OR username="admin";-- -
(or similar logic to force a true condition for the administrator account). Retrieving the Key
: Once logged in or authorized, use the revealed VIP Coupon Code in the "Troll" purchase screen. Ensure the troll amount is set to is greater than or equal to 1
to trigger the "free" purchase and receive your solution key. Key Takeaway This challenge demonstrates that blacklist-based filtering OWASP Security Shepherd's SQL Injection Challenge 5 focuses
(manually removing characters like quotes) is often insufficient, as alternative characters like backslashes can be used to restructure the query logic. For more details, you can refer to the OWASP SQL Injection Prevention Cheat Sheet AI responses may include mistakes. Learn more couponcode from challenges SQL injection 5 #323 - GitHub
Before attempting to inject code, we must determine how the query is structured. A standard lookup query often looks like this:
SELECT * FROM users WHERE username = '$input';
To test for vulnerability, we use the classic "Single Quote" test.
OWASP Security Shepherd 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. To test for vulnerability, we use the classic
SQL Injection Challenge 5 marks a step up in difficulty from the previous challenges. While earlier challenges often rely on obvious error messages or simple authentication bypasses, Challenge 5 typically requires a deeper understanding of how data is retrieved and displayed to the user. This article breaks down the analysis, the theory, and the solution for this specific challenge.
Input: '
If the application throws an SQL error (or shows a blank page where data used to be), the input is breaking the syntax. This confirms the input is not being sanitized.