Created
April 18, 2023 12:23
-
-
Save snowyegret23/11b56999f5f6fded4b1f3404ce4d9dc2 to your computer and use it in GitHub Desktop.
파일의 특정 부분까지 주어진 xor 키를 사용하여 xor.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import itertools | |
file = "testfile.bundle" | |
xor_key = b"\x43\x73\x6d\x36\x68\x50\x23\x50\x39\x76\x6d\x61" | |
endpoint = 0x400 | |
with open(file, "rb") as f: | |
data = f.read() | |
result = bytes( | |
itertools.starmap( | |
lambda x, y: x ^ y, zip(data[:endpoint], itertools.cycle(xor_key)) | |
) | |
) | |
with open(f"{file}.dec", "wb") as f: | |
f.write(result + data[endpoint:]) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment