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Author SHA1 Message Date
SoulKindred
1a2849d698
Add files via upload
Contains Stap, python-script and whitelist.txt
Does not fully work. Requires return-value in start_stap function. If that works, it works fully. Then begin with tidy up work.
2023-06-08 19:32:47 +02:00
3 changed files with 224 additions and 0 deletions

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probe kernel.function("register_keyboard_notifier").call
{
printf("triggered\n")
}

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import subprocess
import time
import multiprocessing
import os
global Smell
#==============================================================================================================
#
#Functions
#
#==============================================================================================================
def list_modules(command):
result = subprocess.run(command, shell = True, capture_output=True, text=True)
if result.returncode == 0:
return result.stdout.strip().split('\n')
else:
print(f"Failed with error:{result.stderr}")
return[]
def get_whitelist(file_path):
try:
with open(file_path, 'r') as file:
lines = file.read().splitlines()
return lines
except IOError:
print(f'Error: Failed to load whitelist{file_path}')
def compare_mods(A, B):
setA = set(A)
setB = set(B)
result = setB - setA
return list(result)
def tidy_up(entries):
cleaned_entries = []
for entry in entries:
modules = entry.split()
if modules:
first_mod = modules[0]
cleaned_entries.append(first_mod)
return cleaned_entries
def unload_mod(modules):
tmp = []
for module in modules:
result = subprocess.run(['sudo','rmmod', module],capture_output = True, text = True)
if result.returncode == 0:
print(f"Unloaded module: {module}")
else:
print(f"Failed to unloaded module: {module}")
tmp.append(module)
print(result.stderr)
result_out = compare_mods(tmp, modules)
print(result_out)
return result_out
#TODO Get Return-value from start_stap()
def start_stap():
print("Starting Sniffer")
output = subprocess.Popen(['stap','funcall_trace.stp'],universal_newlines=True)
if output.stdout != "":
output.terminate()
print("fishy")
Smell = "fishy"
else:
output.terminate()
print("nothing fishy")
Smell = "not fishy"
print(Smell + " smell")
def load_mod(module):
result = subprocess.run(['sudo','insmod', module],capture_output = True, text = True)
if result.returncode == 0:
print(f"Loaded module: {module}")
time.sleep(5)
else:
print(f"Failed to Loaded module: {module}")
print(result.stderr)
def find_file(filename):
result = []
for root, dirs, files in os.walk("/"):
if filename in files:
file_path = os.path.join(root, filename)
result.append(file_path)
result_out = result[0]
result_out = ''.join(result_out)
return result_out
def getpath(sus_modules):
for i in range(len(sus_modules)):
sus_modules[i] = find_file(sus_modules[i] + ".ko")
return sus_modules
def detect_logger(module):
p1 = multiprocessing.Process(target=start_stap)
p1.start()
p2 = multiprocessing.Process(target=load_mod(module))
p2.start()
p1.join()
p2.join()
#==============================================================================================================
#
#Work
#
#==============================================================================================================
whitelist = get_whitelist("whitelist.txt")
lsmod_output = list_modules("lsmod");
sus_modules = compare_mods(whitelist, lsmod_output)
sus_modules = tidy_up(sus_modules)
print(sus_modules)
sus_modules = unload_mod(sus_modules)
time.sleep(1)
print("waited")
sus_modules = getpath(sus_modules)
print(sus_modules)
if len(sus_modules) == 0:
exit()
suspects = []
for module in range(len(sus_modules)):
suspects.append(detect_logger(sus_modules[module]))
print(suspects)

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Module Size Used by
tls 147456 0
uinput 20480 0
isofs 65536 1
snd_seq_dummy 16384 0
snd_hrtimer 16384 1
vboxvideo 36864 0
drm_vram_helper 24576 1 vboxvideo
nf_conntrack_netbios_ns 16384 1
nf_conntrack_broadcast 16384 1 nf_conntrack_netbios_ns
nft_fib_inet 16384 1
nft_fib_ipv4 16384 1 nft_fib_inet
nft_fib_ipv6 16384 1 nft_fib_inet
nft_fib 16384 3 nft_fib_ipv6,nft_fib_ipv4,nft_fib_inet
nft_reject_inet 16384 6
nf_reject_ipv4 16384 1 nft_reject_inet
nf_reject_ipv6 24576 1 nft_reject_inet
nft_reject 16384 1 nft_reject_inet
nft_ct 24576 16
nft_chain_nat 16384 3
nf_nat 65536 1 nft_chain_nat
nf_conntrack 192512 4 nf_nat,nft_ct,nf_conntrack_netbios_ns,nf_conntrack_broadcast
nf_defrag_ipv6 24576 1 nf_conntrack
nf_defrag_ipv4 16384 1 nf_conntrack
ip_set 65536 0
rfkill 40960 3
nf_tables 352256 237 nft_ct,nft_reject_inet,nft_fib_ipv6,nft_fib_ipv4,nft_chain_nat,nft_reject,nft_fib,nft_fib_inet
nfnetlink 20480 3 nf_tables,ip_set
qrtr 57344 4
snd_intel8x0 57344 2
snd_ac97_codec 200704 1 snd_intel8x0
ac97_bus 16384 1 snd_ac97_codec
snd_seq 106496 7 snd_seq_dummy
intel_rapl_msr 20480 0
snd_seq_device 16384 1 snd_seq
intel_rapl_common 36864 1 intel_rapl_msr
snd_pcm 184320 2 snd_intel8x0,snd_ac97_codec
snd_timer 53248 3 snd_seq,snd_hrtimer,snd_pcm
sunrpc 815104 1
rapl 24576 0
binfmt_misc 28672 1
snd 143360 12 snd_seq,snd_seq_device,snd_intel8x0,snd_timer,snd_ac97_codec,snd_pcm
joydev 28672 0
pcspkr 16384 0
soundcore 16384 1 snd
i2c_piix4 36864 0
vboxguest 53248 6
loop 40960 0
zram 32768 2
crct10dif_pclmul 16384 1
crc32_pclmul 16384 0
crc32c_intel 24576 3
polyval_generic 16384 0
video 73728 0
ghash_clmulni_intel 16384 0
vmwgfx 458752 2
drm_ttm_helper 16384 3 vmwgfx,drm_vram_helper,vboxvideo
wmi 45056 1 video
sha512_ssse3 49152 0
e1000 188416 0
serio_raw 20480 0
ttm 102400 3 vmwgfx,drm_vram_helper,drm_ttm_helper
ata_generic 16384 0
pata_acpi 16384 0
ip6_tables 40960 0
ip_tables 40960 0
fuse 212992 5