148 lines
4.7 KiB
Python
148 lines
4.7 KiB
Python
import io
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import sys
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import msoffcrypto
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import time
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from termcolor import cprint
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decrypted_workbook = io.BytesIO()
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colors = ["black", "red", "green", "yellow", "blue", "magenta", "cyan", "white", "light_grey", "dark_grey", "light_red",
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"light_green", "light_yellow", "light_blue", "light_magenta", "light_cyan"]
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total_processes = 0
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total_decrypt_attempts = 0
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update_rate = 100000
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"""
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Get a color for a process using an array
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"""
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def get_color(processNumbar):
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return colors[int(processNumbar % (len(colors) - 1))]
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"""
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Calculates and prints the number of iterations per seconds
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"""
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def calculate_speed(processNumbar, start_time, last_update, word):
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elapsed_time = time.time() - start_time
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if elapsed_time > 0:
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loop_speed = (total_decrypt_attempts - last_update) / elapsed_time
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buifulNumbar = '{:,}'.format(round(loop_speed)).replace(',', ' ')
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print_thread(processNumbar, "Loop speed: " + buifulNumbar + " iterations per second (at word " + word + ")")
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"""
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Formats and prints with colors for a process
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"""
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def print_thread(processNumbar, text):
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cprint("[" + str(processNumbar) + "/" + str(total_processes) + "] " + text, get_color(processNumbar))
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"""
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Decryption function
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"""
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def decrypt_file(file, text):
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global total_decrypt_attempts
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total_decrypt_attempts = total_decrypt_attempts + 1 # Global loop iterations
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try:
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file.load_key(password=text)
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file.decrypt(decrypted_workbook)
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return True
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except Exception as e:
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return False
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"""
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Gets multiple different lines to decrypt
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"""
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def get_lines(line):
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return [line, line.lower(), line.upper()]
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"""
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Global function of a child process
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"""
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def worldlist_bruteforce_partial(fileToCrack, wordlistPath, total_proc, processNumbar, startPos, endPos):
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global total_processes
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total_processes = total_proc
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# Opens the excel file
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with open(fileToCrack, 'rb') as file:
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office_file = msoffcrypto.OfficeFile(file)
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# First definitions...
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last_update = total_decrypt_attempts
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start_time = time.time()
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# Opens the wordlist and begins cracking
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with open(wordlistPath, 'r', encoding='latin_1') as wordlistToUse:
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# Find the right start position in the wordlist for this process
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print_thread(processNumbar, "Started new process [" + str(startPos) + " -> " + str(endPos) + "]")
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wordlistToUse.seek(startPos)
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# Move backward until a newline character is found or we reach the beginning of the file
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position = startPos
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while position > 0:
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wordlistToUse.seek(position - 1)
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if wordlistToUse.read(1) == '\n':
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wordlistToUse.seek(position - 1)
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break
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position -= 1
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# I love while True loops
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while True:
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try:
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line = wordlistToUse.readline()
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# End the thread if it has arrived to its given endPos
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if wordlistToUse.tell() >= endPos:
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print_thread(processNumbar, "Thread done at line " + line + " with " + str(
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total_decrypt_attempts) + " attempts.")
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break
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except Exception as e:
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print(e) # When a line fails to decode properly (Probably a wrong text encoding)
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line = "error"
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pass
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# If the file is done break
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if not line:
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break
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line = line.rstrip() # Removes line endings
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# Print status every x lines read
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if last_update <= total_decrypt_attempts - update_rate:
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calculate_speed(processNumbar, start_time, last_update, line)
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start_time = time.time()
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last_update = total_decrypt_attempts
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# Trying to decrypt the file
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for lineToDecrypt in get_lines(line):
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if decrypt_file(office_file, lineToDecrypt): # Decrypts
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print_thread(processNumbar,
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"!!FOUNDPASSWORD!! " + lineToDecrypt + " !!FOUNDPASSWORD!!")
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# Writes pass to file
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foundPassFile = open("found.txt", "w")
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foundPassFile.write(lineToDecrypt)
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foundPassFile.close()
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print_thread(processNumbar,
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"Saved in found.txt...")
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sys.exit(111) # Exit with found code
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