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Update yarGen.py #39

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Update yarGen.py #39

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14 changes: 9 additions & 5 deletions yarGen.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
from hashlib import sha256
import signal as signal_module
from lxml import etree
import requests

RELEVANT_EXTENSIONS = [".asp", ".vbs", ".ps", ".ps1", ".tmp", ".bas", ".bat", ".cmd", ".com", ".cpl",
".crt", ".dll", ".exe", ".msc", ".scr", ".sys", ".vb", ".vbe", ".vbs", ".wsc",
Expand Down Expand Up @@ -456,6 +457,7 @@ def sample_string_evaluation(string_stats, opcode_stats, file_info):
inverse_stats[fileName].append(string)

# SUPER RULE GENERATION -----------------------------------------------

if not nosuper and not args.inverse:

# SUPER RULES GENERATOR - preliminary work
Expand Down Expand Up @@ -1364,7 +1366,7 @@ def generate_rules(file_strings, file_opcodes, super_rules, file_info, inverse_s

rule += " strings:\n"

# Adding the opcodes
# Adding the strings
if file_opcodes.get(filePath) is None:
tmp_file_opcodes = {}
else:
Expand Down Expand Up @@ -1626,7 +1628,8 @@ def get_rule_strings(string_elements, opcode_elements):

string_rule_count += 1

# Adding the opcodes --------------------------------------
# If too few strings - add opcodes
# Adding the strings --------------------------------------
opcodes_included = False
if len(opcode_elements) > 0:
rule_strings += "\n"
Expand Down Expand Up @@ -1901,8 +1904,9 @@ def update_databases():
try:
for filename, repo_url in REPO_URLS.items():
print("Downloading %s from %s ..." % (filename, repo_url))
with urllib.request.urlopen(repo_url) as response, open("./dbs/%s" % filename, 'wb') as out_file:
shutil.copyfileobj(response, out_file)
with requests.get(repo_url,stream=True) as response, open("./dbs/%s" % filename, 'wb') as out_file:
response.raw.decode_content = True
shutil.copyfileobj(response.raw, out_file)
except Exception as e:
if args.debug:
traceback.print_exc()
Expand Down Expand Up @@ -2426,4 +2430,4 @@ def print_welcome():
print("[+] Processing malware files ...")
processSampleDir(args.m)

print("[+] yarGen run finished")
print("[+] yarGen run finished")