From 1144db567f060af6289930f001d6cd4bb8a80075 Mon Sep 17 00:00:00 2001
From: Michael Chen <git@cnml.de>
Date: Tue, 17 May 2022 12:59:39 +0200
Subject: [PATCH] Added challenge 245

---
 245/level1.flag.txt.enc | Bin 0 -> 30 bytes
 245/level1.py           |  28 ++++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 245/level1.flag.txt.enc
 create mode 100644 245/level1.py

diff --git a/245/level1.flag.txt.enc b/245/level1.flag.txt.enc
new file mode 100644
index 0000000000000000000000000000000000000000..83dc710d9549d1123560b684001458413e8795ff
GIT binary patch
literal 30
lcmeZ>3yP^uF8APNW{FOBWr&Suiw{X>3ucT9X6NSi0sw$G2U`FD

literal 0
HcmV?d00001

diff --git a/245/level1.py b/245/level1.py
new file mode 100644
index 0000000..8e3145e
--- /dev/null
+++ b/245/level1.py
@@ -0,0 +1,28 @@
+### 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('level1.flag.txt.enc', 'rb').read()
+
+
+
+def level_1_pw_check():
+    user_pw = input("Please enter correct password for flag: ")
+    if( user_pw == "8713"):
+        print("Welcome back... your flag, user:")
+        decryption = str_xor(flag_enc.decode(), user_pw)
+        print(decryption)
+        return
+    print("That password is incorrect")
+
+
+
+level_1_pw_check()