misc: add already solved challenges

misc/pw_crack_1/level1.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+### 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()

misc/pw_crack_1/output.txt

@@ -0,0 +1,4 @@
+$ ./level1.py
+Please enter correct password for flag: 8713
+Welcome back... your flag, user:
+picoCTF{545h_r1ng1ng_1b2fd683}