Solution to Flare-on 2020's challenge no 2 - garbage

solve.py

def decrypt(text, alphabet):
	l = 0x66
	cnt = len(text)
	i = 0
	res = []
	while i < cnt:
		res.append(chr(text[i] ^ ord(alphabet[i%l])))
		i += 1

	return ''.join(res)
	
from struct import unpack,pack

fileName =  b"\x3b\x02\x0e\x38"[::-1]
fileName += b"\x34\x1b\x3b\x19"[::-1]
fileName += b"\x3e\x23\x0c\x1b"[::-1]
fileName += b"\x42\x11\x08\x33"[::-1]
fileName += b"\x73\x1e\x12\x39"[::-1]

alphabet = "nPTnaGLkIqdcQwvieFQKGcTGOTbfMjDNmvibfBDdFBhoPaBbtfQuuGWYomtqTFqvBSKdUMmciqKSGZaosWCSoZlcIlyQpOwkcAgw "
alphabet2 = "KglPFOsQDxBPXmclOpmsdLDEPMRWbMDzwhDGOyqAkVMRvnBeIkpZIhFznwVylfjrkqprBPAdPuaiVoVugQAlyOQQtxBNsTdPZgDH "

content =  b"\x2c\x33\x23\x23"[::-1]
content += b"\x49\x64\x3f\x0e"[::-1]
content += b"\x04\x0a\x1e\x0a"[::-1]
content += b"\x1a\x02\x16\x23"[::-1]
content += b"\x24\x08\x66\x44"[::-1]
content += b"\x2c\x74\x11\x32"[::-1]
content += b"\x0f\x42\x2d\x2a"[::-1]
content += b"\x0d\x64\x50\x3e"[::-1]
content += b"\x17\x1b\x04\x5d"[::-1]
content += b"\x05\x03\x36\x16"[::-1]
content += b"\x08\x09\x20\x34"[::-1]
content += b"\x0e\x24\x21\x63"[::-1]
content += b"\x58\x34\x14\x15"[::-1]
content += b"\x3a\x79\x29\x1a"[::-1]
content += b"\x58\x56\x00\x00"[::-1]
content += b'\x54';

print(decrypt(fileName, alphabet2))
print(decrypt(content, alphabet))