Crypto

400Curves: turn the RSA leak into a lattice recovery, rebuild the secret values, and decrypt the flag.

Down the Rabinhole: exploit the RSA structure, recover the missing secret, and decrypt the flag.

secure source: reconstruct the PRNG state from the leak, replay it, and recover the flag.

signup: reduce the hash constraint to a small search, test candidates, and recover the flag.

Spooky RSA: exploit the RSA structure, recover the missing secret, and decrypt the flag.

TurboCipher: model the crypto leak, recover the missing secret, and decrypt the flag.

alphascii clashing: reduce the hash constraint to a small search, test candidates, and recover the flag.

Digital-Safety-Annex: use the curve leak or invalid-curve path to recover the secret and decrypt the flag.

Interception: model the leak as a small lattice problem, recover the secret, and verify the flag.

Multipage Recyclings: abuse the AES misuse, derive the missing key material, and decrypt the flag.

Not that random: reconstruct the PRNG state from the leak, replay it, and recover the flag.

Nuclear Sale: model the crypto leak, recover the missing secret, and decrypt the flag.

One Step Closer: exploit the RSA structure, recover the missing secret, and decrypt the flag.

Partial Tenacity: exploit the RSA structure, recover the missing secret, and decrypt the flag.

Permuted: exploit the RSA structure, recover the missing secret, and decrypt the flag.

RLotto: reconstruct the PRNG state from the leak, replay it, and recover the flag.

Weak RSA: exploit the RSA structure, recover the missing secret, and decrypt the flag.

Whole Lotta Candy: abuse the AES misuse, derive the missing key material, and decrypt the flag.

Inside the Matrix: turn the RSA leak into a lattice recovery, rebuild the secret values, and decrypt the flag.

Jenny From The Block: reduce the hash constraint to a small search, test candidates, and recover the flag.

Living with Elegance: model the crypto leak, recover the missing secret, and decrypt the flag.

Lost Modulus: exploit the RSA structure, recover the missing secret, and decrypt the flag.

LunaCrypt: derive the XOR key stream, invert the transform, and recover the flag.

Mayday Mayday: model the leak as a small lattice problem, recover the secret, and verify the flag.

MSS: exploit the RSA structure, recover the missing secret, and decrypt the flag.

AHS512: reconstruct the PRNG state from the leak, replay it, and recover the flag.

Arranged: abuse the AES misuse, derive the missing key material, and decrypt the flag.