May 2016 archive

CODEGATEgate

Final Scoreboard as captured by manhluat (l4w) TL;DR CTF team LC↯BC has been banned and stripped of the first place at CODEGATE CTF 2016 Finals. The fact has been announced after competition ended and even after they announced the winners. Disqualification decision was made in the most unprofessional and biased way possible, and the CTF …

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Google CTF – Woodman (Crypto 100)

How honest are you? Running here Summary: breaking a weak PRNG

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Google CTF – Spotted Wobbegong (Crypto 100)

Are you able to defeat 1024-bit RSA? public.pem Summary: breaking RSA with PCKS v1.5 padding and exponent 3.

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Google CTF – Jekyll (Crypto)

Can you access the admin page? You can look at the crypto here. source.py Summary: finding a preimage for a simple 64-bit ARX-based hash.

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Google CTF – Wolf Spider (Crypto 125)

Continuing on from Eucalypt Forest – can you break Message Authentication in Wolf Spider wolf.py Summary: forging signatures by exploiting CBC padding oracle and hash length extenstion

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