### Solve.py```python# solve.pyfrom pwn import *
conn = remote('104.199.9.13', 1338)
nulls = '00'*32 # 32 null bytes
conn.sendlineafter('(hex)]>  ', nulls)
# get the ciphertext that the program gives# and decode it from hexcipher = bytes.fromhex(conn.recvline().decode().split()[-1])
# Extract key and flag from cipherkey = cipher[:32]flag = cipher[32:]
flag = xor(flag, key)
print(flag.decode())```
flag: `BSNoida{how_can_you_break_THE_XOR_?!?!}`