📄️ Been Counter
I've struggled to get PyCrypto's counter mode doing what I want, so I've turned ECB mode into CTR myself. My counter can go both upwards and downwards to throw off cryptanalysts! There's no chance they'll be able to read my picture.
📄️ ECB CBC WTF
Here you can encrypt in CBC but only decrypt in ECB. That shouldn't be a weakness because they're different modes... right?
📄️ ECB Oracle
ECB is the most simple mode, with each plaintext block encrypted entirely independently. In this case, your input is prepended to the secret flag and encrypted and that's it. We don't even provide a decrypt function. Perhaps you don't need a padding oracle when you have an "ECB oracle"?
📄️ Flipping Cookie
You can get a cookie for my website, but it won't help you read the flag... I think.
📄️ symmetry
Some block cipher modes, such as OFB, CTR, or CFB, turn a block cipher into a stream cipher. The idea behind stream ciphers is to produce a pseudorandom keystream which is then XORed with the plaintext. One advantage of stream ciphers is that they can work of plaintext of arbitrary length, with no padding required.