#!/usr/bin/env python3 # -*-coding:UTF-8 -* """ The Credential Module ===================== This module is consuming the Redis-list created by the Categ module. It apply credential regexes on paste content and warn if above a threshold. It also split the username and store it into redis for searching purposes. Redis organization: uniqNumForUsername: unique number attached to unique username uniqNumForPath: unique number attached to unique path -> uniqNum are used to avoid string duplication AllCredentials: hashed set where keys are username and value are their uniq number AllCredentialsRev: the opposite of AllCredentials, uniqNum -> username AllPath: hashed set where keys are path and value are their uniq number AllPathRev: the opposite of AllPath, uniqNum -> path CredToPathMapping_uniqNumForUsername -> (set) -> uniqNumForPath """ import time import sys from packages import Paste from pubsublogger import publisher from Helper import Process import datetime import re import redis from pyfaup.faup import Faup import signal class TimeoutException(Exception): pass def timeout_handler(signum, frame): raise TimeoutException signal.signal(signal.SIGALRM, timeout_handler) max_execution_time = 30 #split username with spec. char or with upper case, distinguish start with upper REGEX_CRED = "[a-z]+|[A-Z]{3,}|[A-Z]{1,2}[a-z]+|[0-9]+" REDIS_KEY_NUM_USERNAME = 'uniqNumForUsername' REDIS_KEY_NUM_PATH = 'uniqNumForUsername' REDIS_KEY_ALL_CRED_SET = 'AllCredentials' REDIS_KEY_ALL_CRED_SET_REV = 'AllCredentialsRev' REDIS_KEY_ALL_PATH_SET = 'AllPath' REDIS_KEY_ALL_PATH_SET_REV = 'AllPathRev' REDIS_KEY_MAP_CRED_TO_PATH = 'CredToPathMapping' if __name__ == "__main__": publisher.port = 6380 publisher.channel = "Script" config_section = "Credential" p = Process(config_section) publisher.info("Find credentials") minimumLengthThreshold = p.config.getint("Credential", "minimumLengthThreshold") faup = Faup() server_cred = redis.StrictRedis( host=p.config.get("ARDB_TermCred", "host"), port=p.config.get("ARDB_TermCred", "port"), db=p.config.get("ARDB_TermCred", "db"), decode_responses=True) server_statistics = redis.StrictRedis( host=p.config.get("ARDB_Statistics", "host"), port=p.config.getint("ARDB_Statistics", "port"), db=p.config.getint("ARDB_Statistics", "db"), decode_responses=True) criticalNumberToAlert = p.config.getint("Credential", "criticalNumberToAlert") minTopPassList = p.config.getint("Credential", "minTopPassList") regex_web = "((?:https?:\/\/)[-_0-9a-zA-Z]+\.[0-9a-zA-Z]+)" #regex_cred = "[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,6}:[a-zA-Z0-9\_\-]+" regex_cred = "[a-zA-Z0-9\\._-]+@[a-zA-Z0-9\\.-]+\.[a-zA-Z]{2,6}[\\rn :\_\-]{1,10}[a-zA-Z0-9\_\-]+" regex_site_for_stats = "@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,6}:" while True: message = p.get_from_set() if message is None: publisher.debug("Script Credential is Idling 10s") #print('sleeping 10s') time.sleep(10) continue filepath, count = message.split(' ') paste = Paste.Paste(filepath) content = paste.get_p_content() item_id = filepath # max execution time on regex signal.alarm(max_execution_time) try: creds = set(re.findall(regex_cred, content)) except TimeoutException: p.incr_module_timeout_statistic() # add encoder type err_mess = "Credential: processing timeout: {}".format(item_id) print(err_mess) publisher.info(err_mess) continue else: signal.alarm(0) if len(creds) == 0: continue signal.alarm(max_execution_time) try: sites = re.findall(regex_web, content) #Use to count occurences except TimeoutException: p.incr_module_timeout_statistic() err_mess = "Credential: site, processing timeout: {}".format(item_id) print(err_mess) publisher.info(err_mess) sites = [] else: signal.alarm(0) sites_set = set(sites) message = 'Checked {} credentials found.'.format(len(creds)) if sites_set: message += ' Related websites: {}'.format( (', '.join(sites_set)) ) to_print = 'Credential;{};{};{};{};{}'.format(paste.p_source, paste.p_date, paste.p_name, message, paste.p_rel_path) print('\n '.join(creds)) #num of creds above tresh, publish an alert if len(creds) > criticalNumberToAlert: print("========> Found more than 10 credentials in this file : {}".format( filepath )) publisher.warning(to_print) #Send to duplicate p.populate_set_out(filepath, 'Duplicate') msg = 'infoleak:automatic-detection="credential";{}'.format(filepath) p.populate_set_out(msg, 'Tags') #Put in form, count occurences, then send to moduleStats signal.alarm(max_execution_time) try: site_occurence = re.findall(regex_site_for_stats, content) except TimeoutException: p.incr_module_timeout_statistic() err_mess = "Credential: site occurence, processing timeout: {}".format(item_id) print(err_mess) publisher.info(err_mess) site_occurence = [] else: signal.alarm(0) creds_sites = {} for site in site_occurence: site_domain = site[1:-1] if site_domain in creds_sites.keys(): creds_sites[site_domain] += 1 else: creds_sites[site_domain] = 1 for url in sites: faup.decode(url) domain = faup.get()['domain'] ## TODO: # FIXME: remove me try: domain = domain.decode() except: pass if domain in creds_sites.keys(): creds_sites[domain] += 1 else: creds_sites[domain] = 1 for site, num in creds_sites.items(): # Send for each different site to moduleStats mssg = 'credential;{};{};{}'.format(num, site, paste.p_date) print(mssg) p.populate_set_out(mssg, 'ModuleStats') if sites_set: print("=======> Probably on : {}".format(', '.join(sites_set))) date = datetime.datetime.now().strftime("%Y%m") for cred in creds: maildomains = re.findall("@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,20}", cred.lower())[0] faup.decode(maildomains) tld = faup.get()['tld'] ## TODO: # FIXME: remove me try: tld = tld.decode() except: pass server_statistics.hincrby('credential_by_tld:'+date, tld, 1) else: publisher.info(to_print) print('found {} credentials'.format(len(creds))) #for searching credential in termFreq for cred in creds: cred = cred.split('@')[0] #Split to ignore mail address #unique number attached to unique path uniq_num_path = server_cred.incr(REDIS_KEY_NUM_PATH) server_cred.hmset(REDIS_KEY_ALL_PATH_SET, {filepath: uniq_num_path}) server_cred.hmset(REDIS_KEY_ALL_PATH_SET_REV, {uniq_num_path: filepath}) #unique number attached to unique username uniq_num_cred = server_cred.hget(REDIS_KEY_ALL_CRED_SET, cred) if uniq_num_cred is None: #cred do not exist, create new entries uniq_num_cred = server_cred.incr(REDIS_KEY_NUM_USERNAME) server_cred.hmset(REDIS_KEY_ALL_CRED_SET, {cred: uniq_num_cred}) server_cred.hmset(REDIS_KEY_ALL_CRED_SET_REV, {uniq_num_cred: cred}) #Add the mapping between the credential and the path server_cred.sadd(REDIS_KEY_MAP_CRED_TO_PATH+'_'+str(uniq_num_cred), uniq_num_path) #Split credentials on capital letters, numbers, dots and so on #Add the split to redis, each split point towards its initial credential unique number splitedCred = re.findall(REGEX_CRED, cred) for partCred in splitedCred: if len(partCred) > minimumLengthThreshold: server_cred.sadd(partCred, uniq_num_cred)