Changed the way the decryption worked to allow 3 different lines to try on each line of the wordlist

child_process.py

@@ -10,7 +10,10 @@ decrypted_workbook = io.BytesIO()
 colors = ["black", "red", "green", "yellow", "blue", "magenta", "cyan", "white", "light_grey", "dark_grey", "light_red",
           "light_green", "light_yellow", "light_blue", "light_magenta", "light_cyan"]
 
-global total_processes
+total_processes = 0
+total_decrypt_attempts = 0
+
+update_rate = 100000
 
 """
 Get a color for a process using an array
@@ -26,10 +29,10 @@ Calculates and prints the number of iterations per seconds
 """
 
 
-def calculate_speed(processNumbar, start_time, iterations, word):
+def calculate_speed(processNumbar, start_time, last_update, word):
     elapsed_time = time.time() - start_time
     if elapsed_time > 0:
-        loop_speed = iterations / elapsed_time
+        loop_speed = (total_decrypt_attempts - last_update) / elapsed_time
         buifulNumbar = '{:,}'.format(round(loop_speed)).replace(',', ' ')
         print_thread(processNumbar, "Loop speed: " + buifulNumbar + " iterations per second (at word " + word + ")")
 
@@ -43,6 +46,31 @@ def print_thread(processNumbar, text):
     cprint("[" + str(processNumbar) + "/" + str(total_processes) + "] " + text, get_color(processNumbar))
 
 
+"""
+Decryption function
+"""
+
+
+def decrypt_file(file, text):
+    global total_decrypt_attempts
+    total_decrypt_attempts = total_decrypt_attempts + 1  # Global loop iterations
+    try:
+        file.load_key(password=text)
+        file.decrypt(decrypted_workbook)
+        return True
+    except Exception as e:
+        return False
+
+
+"""
+Gets multiple different lines to decrypt 
+"""
+
+
+def get_lines(line):
+    return [line, line.lower(), line.upper()]
+
+
 """
 Global function of a child process
 """
@@ -57,27 +85,34 @@ def worldlist_bruteforce_partial(fileToCrack, wordlistPath, total_proc, processN
         office_file = msoffcrypto.OfficeFile(file)
 
         # First definitions...
-        i = 0
-        iterations = 0
+        last_update = total_decrypt_attempts
         start_time = time.time()
 
         # Opens the wordlist and begins cracking
         with open(wordlistPath, 'r', encoding='latin_1') as wordlistToUse:
             # Find the right start position in the wordlist for this process
             print_thread(processNumbar, "Started new process [" + str(startPos) + " -> " + str(endPos) + "]")
+
             wordlistToUse.seek(startPos)
+            # Move backward until a newline character is found or we reach the beginning of the file
+            position = startPos
+            while position > 0:
+                wordlistToUse.seek(position - 1)
+
+                if wordlistToUse.read(1) == '\n':
+                    wordlistToUse.seek(position - 1)
+                    break
+                position -= 1
 
             # I love while True loops
             while True:
-                i = i + 1  # Global loop iterations
-                iterations = iterations + 1  # Resets every status update
-
                 try:
                     line = wordlistToUse.readline()
 
                     # End the thread if it has arrived to its given endPos
                     if wordlistToUse.tell() >= endPos:
-                        print_thread(processNumbar, "Thread done at line " + line + " with " + str(i) + " attempts.")
+                        print_thread(processNumbar, "Thread done at line " + line + " with " + str(
+                            total_decrypt_attempts) + " attempts.")
                         break
                 except Exception as e:
                     print(e)  # When a line fails to decode properly (Probably a wrong text encoding)
@@ -91,17 +126,15 @@ def worldlist_bruteforce_partial(fileToCrack, wordlistPath, total_proc, processN
                 line = line.rstrip()  # Removes line endings
 
                 # Print status every x lines read
-                if iterations == 100000:
-                    calculate_speed(processNumbar, start_time, iterations, line)
+                if last_update == update_rate:
+                    calculate_speed(processNumbar, start_time, last_update, line)
                     start_time = time.time()
-                    iterations = 0
+                    last_update = 0
 
                 # Trying to decrypt the file
-                try:
-                    office_file.load_key(password=line)
-                    office_file.decrypt(decrypted_workbook)
-                    print_thread(processNumbar,
-                                 "!!FOUNDPASSWORD!! \"" + line + "\" with " + str(i) + " attempts.")
-                    sys.exit(111)  # Exit with found code
-                except Exception as e:
-                    pass
+                for lineToDecrypt in get_lines(line):
+                    if decrypt_file(office_file, lineToDecrypt):  # Decrypts
+                        print_thread(processNumbar,
+                                     "!!FOUNDPASSWORD!! \"" + lineToDecrypt + "\" with " + str(
+                                         total_decrypt_attempts) + " attempts.")
+                        sys.exit(111)  # Exit with found code