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Limit payloads to 63 characters #62

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Merged
initstring merged 2 commits into from
Oct 10, 2023
Merged

Limit payloads to 63 characters #62

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1c8cab1
Limit payloads to 63 characters
initstring Oct 10, 2023
2a22a84
Add DNS name validation
initstring Oct 10, 2023
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Add DNS name validation
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@initstring
initstring committed Oct 10, 2023
commit 2a22a84e1f841702d02d82306c5aa6948e3e6870
24 changes: 24 additions & 0 deletions enum_tools/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
import json
from multiprocessing.dummy import Pool as ThreadPool
from functools import partial
from urllib.parse import urlparse
try:
import requests
import dns
Expand Down Expand Up @@ -41,6 +42,23 @@ def init_logfile(logfile, fmt):
log_writer.write(f"\n\n#### CLOUD_ENUM {now} ####\n")


def is_valid_domain(domain):
"""
Checks if the domain has a valid format and length
"""
# Check for domain total length
if len(domain) > 253: # According to DNS specifications
return False

# Check each label in the domain
for label in domain.split('.'):
# Each label should be between 1 and 63 characters long
if not (1 <= len(label) <= 63):
return False

return True


def get_url_batch(url_list, use_ssl=False, callback='', threads=5, redir=True):
"""
Processes a list of URLs, sending the results back to the calling
Expand All @@ -52,6 +70,9 @@ def get_url_batch(url_list, use_ssl=False, callback='', threads=5, redir=True):
tick['total'] = len(url_list)
tick['current'] = 0

# Filter out invalid URLs
url_list = [url for url in url_list if is_valid_domain(url)]

# Break the url list into smaller lists based on thread size
queue = [url_list[x:x+threads] for x in range(0, len(url_list), threads)]

Expand Down Expand Up @@ -149,6 +170,9 @@ def fast_dns_lookup(names, nameserver, callback='', threads=5):

print(f"[*] Brute-forcing a list of {total} possible DNS names")

# Filter out invalid domains
names = [name for name in names if is_valid_domain(name)]

# Break the url list into smaller lists based on thread size
queue = [names[x:x+threads] for x in range(0, len(names), threads)]

Expand Down