added default.nix and various ctf examples

test.py

@@ -1,28 +0,0 @@
-import string
-
-from imp.attacks import paddingoracle
-
-from Crypto.Cipher import AES
-from Crypto.Util.Padding import pad
-
-CHARSET = [c.encode() for c in string.printable]
-
-KEY = b'you wont get me!'
-FLAG = b'imbaud{omg_you_catched_me}'
-CIPHER = AES.new(KEY, AES.MODE_ECB)
-
-def encrypt(b: bytes, debug=False) -> bytes:
-    padded = pad(b + FLAG, 16)
-    if debug:
-        print(padded)
-    # print(padded)
-    return CIPHER.encrypt(padded)
-
-def main() -> None:
-    paddingoracle.crack(encrypt, pad, CHARSET, 16, batch_size=50, debug=True)
-
-if __name__ == '__main__':
-    try:
-        main()
-    except (KeyboardInterrupt, EOFError):
-        print('\n[!] Interrupt')