From 42e2486143e98e8bd28b980269c1a7d5508c481a Mon Sep 17 00:00:00 2001
From: Michael Chen <git@cnml.de>
Date: Tue, 17 May 2022 13:03:54 +0200
Subject: [PATCH] Added challenge 246

---
 246/level2.flag.txt.enc |  2 ++
 246/level2.py           | 27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 246/level2.flag.txt.enc
 create mode 100644 246/level2.py

diff --git a/246/level2.flag.txt.enc b/246/level2.flag.txt.enc
new file mode 100644
index 0000000..498cf5d
--- /dev/null
+++ b/246/level2.flag.txt.enc
@@ -0,0 +1,2 @@
+TY'1qM:
+X:]
RW]J
\ No newline at end of file
diff --git a/246/level2.py b/246/level2.py
new file mode 100644
index 0000000..5db4b69
--- /dev/null
+++ b/246/level2.py
@@ -0,0 +1,27 @@
+### THIS FUNCTION WILL NOT HELP YOU FIND THE FLAG --LT ########################
+def str_xor(secret, key):
+    #extend key to secret length
+    new_key = key
+    i = 0
+    while len(new_key) < len(secret):
+        new_key = new_key + key[i]
+        i = (i + 1) % len(key)        
+    return "".join([chr(ord(secret_c) ^ ord(new_key_c)) for (secret_c,new_key_c) in zip(secret,new_key)])
+###############################################################################
+
+flag_enc = open('level2.flag.txt.enc', 'rb').read()
+
+
+
+def level_2_pw_check():
+    user_pw = input("Please enter correct password for flag: ")
+    if( user_pw == chr(0x64) + chr(0x65) + chr(0x37) + chr(0x36) ):
+        print("Welcome back... your flag, user:")
+        decryption = str_xor(flag_enc.decode(), user_pw)
+        print(decryption)
+        return
+    print("That password is incorrect")
+
+
+
+level_2_pw_check()