In this episode we solve the No Padding, No Problem @picoCTF challenge. It takes us a while as we try to remember how RSA works and figure out the weakness and formulas we need to us.
We leave our struggles in the video so people don’t feel like they are the only ones who can’t figure something out in 10 minutes. That said, you can watch the beginning then jump to 1:25:00 – where Omar figures out the formula to use.
Is there a better way to solve this problem? Let us know in the comments.
GitHub repo of the solution: https://github.com/mrbiggred/picoCTF/tree/main/no_padding_no_problem
picoCTF (now CyLab):
https://picoctf.org/
Wiki Page with the formula we used:
https://en.wikipedia.org/wiki/Malleability_(cryptography)
SaturdayMP:
https://saturdaymp.com/
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