Clear it in 3 steps
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No environment needed
This challenge can be solved with the information in the statement alone. Submit the flag you find directly.
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Investigate the target
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Submit the flag
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Padding Oracle Basics
Mission
Padding oracle attacks use error differences as a plaintext recovery signal. This introductory task decodes leaked Base64 data. Leaked Base64 string: Vmlld1NvdXJjZTpLSU5PQ097cGFkZGluZ19vcmFjbGVfYmFzaWNzfQ== Decode it as Base64 and submit the text after ViewSource: as the flag.
Hints
Hint 1 Show
Decode it as Base64 first
Hint 2 Show
The decoded text starts with ViewSource:
Hint 3 Show
Submit the text after the colon