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test.py
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test.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import sys
import shutil
import re
import traceback
from os.path import dirname, join
from hashlib import md5
from tempfile import mkdtemp
from subprocess import Popen, PIPE
try:
import IPython
except ImportError:
pass
from shellnoob import ShellNoob, cstr, cbytes
GREEN = '\033[92m'
RED = '\033[91m'
ENDC = '\033[0m'
SHELLNOOB_FP = os.path.join(os.path.dirname(__file__), 'shellnoob.py')
SECRET_STR = 'thesecretisthedolphin'
# expcted values for the different tests / architecture-OS
# test functions
supported_features = {
# TODO use regex!
'Linux#i686' : {
'test_resolve_const' : [
(['O_RDONLY'], ('^O_RDONLY ~> 0\n$', '', 0)),
(['O_RDWR'], ('^O_RDWR ~> 2\n$', '', 0)),
],
'test_resolve_syscall' : [
(['read'], ('^i386 ~> 3\n$', '', 0)),
(['write'], ('^i386 ~> 4\n$', '', 0)),
],
'test_conversion' : [
([True], ('^$', '^$', 0)),
],
'test_interactive' : [
(['1\nmov %ebx,%eax\nnop\nquit\n',''], ('[^\n]+~> 89d8\n[^\n]+~> 90', '', 0)),
(['1\nmov eax,ebx\nnop\nquit\n','--intel'], ('[^\n]+~> 89d8\n[^\n]+~> 90', '', 0)),
(['2\n89d890\nquit\n',''], ('0:.*mov\s+%ebx,%eax\n\s+2:.*nop\n', '', 0)),
(['2\n89d890\nquit\n','--intel'], ('0:.*mov\s+eax,ebx\n\s+2:.*nop\n', '', 0)),
],
'test_get_start_address' : [
([], ('^$', '^$', 0)),
],
},
'Linux#x86_64' : {
'test_resolve_const' : [
(['O_RDONLY'], ('^O_RDONLY ~> 0\n$', '', 0)),
(['O_RDWR'], ('^O_RDWR ~> 2\n$', '', 0)),
],
'test_resolve_syscall' : [
(['read'], ('^x86_64 ~> 0\ni386 ~> 3\n$', '', 0)),
(['write'], ('^x86_64 ~> 1\ni386 ~> 4\n$', '', 0)),
],
'test_conversion' : [
([True], ('^$', '^$', 0)),
],
'test_interactive' : [
(['1\nmov %ebx,%eax\nnop\nquit\n',''], ('[^\n]+~> 89d8\n[^\n]+~> 90', '', 0)),
(['1\nmov eax,ebx\nnop\nquit\n','--intel'], ('[^\n]+~> 89d8\n[^\n]+~> 90', '', 0)),
(['1\nmov %rbx,%rax\nnop\nquit\n','--64'], ('[^\n]+~> 4889d8\n[^\n]+~> 90', '', 0)),
(['1\nmov rax,rbx\nnop\nquit\n','--intel --64'], ('[^\n]+~> 4889d8\n[^\n]+~> 90', '', 0)),
(['2\n89d890\nquit\n',''], ('0:.*mov\s+%ebx,%eax\n\s+2:.*nop\n', '', 0)),
(['2\n89d890\nquit\n','--intel'], ('0:.*mov\s+eax,ebx\n\s+2:.*nop\n', '', 0)),
(['2\n4889d890\nquit\n','--64'], ('0:.*mov\s+%rbx,%rax\n\s+3:.*nop\n', '', 0)),
(['2\n4889d890\nquit\n','--intel --64'], ('0:.*mov\s+rax,rbx\n\s+3:.*nop\n', '', 0)),
],
'test_get_start_address' : [
([], ('^$', '^$', 0)),
],
},
'Linux#armv5tejl' : {
'test_resolve_const' : [
(['O_RDONLY'], ('^O_RDONLY ~> 0\n$', '', 0)),
(['O_RDWR'], ('^O_RDWR ~> 2\n$', '', 0)),
],
},
}
def test_resolve_const(const):
stdout, stderr, retval = run_with_args('--get-const %s' % const)
return stdout, stderr, retval
def test_resolve_syscall(syscall):
stdout, stderr, retval = run_with_args('--get-sysnum %s' % syscall)
return stdout, stderr, retval
def test_conversion(with_breakpoint=False):
stdout, stderr = '', ''
tmp_dir = mkdtemp()
asm_fp = join(tmp_dir, 'shellcode.asm')
asm2_fp = join(tmp_dir, 'shellcode2.asm')
obj_fp = join(tmp_dir, 'shellcode.obj')
exe_fp = join(tmp_dir, 'shellcode.exe')
bin_fp = join(tmp_dir, 'shellcode.bin')
bin2_fp = join(tmp_dir, 'shellcode2.bin')
hex_fp = join(tmp_dir, 'shellcode.hex')
c_fp = join(tmp_dir, 'shellcode.c')
python_fp = join(tmp_dir, 'shellcode.py')
bash_fp = join(tmp_dir, 'shellcode.sh')
pretty_fp = join(tmp_dir, 'shellcode.pretty')
safeasm_fp = join(tmp_dir, 'shellcode.safeasm')
secret_fp = '/tmp/secret'
os.system('echo "%s" > %s' % (SECRET_STR, secret_fp))
kernel = ShellNoob.get_kernel()
if kernel == 'Linux':
shutil.copyfile(join(dirname(__file__), 'samples/x86-linux/open-read-write.asm'), asm_fp)
elif kernel == 'FreeBSD':
shutil.copyfile(join(dirname(__file__), 'samples/x86-freebsd/open-read-write.asm'), asm_fp)
else:
raise Exception('testing on kernel %s not supported' % kernel)
_out, _err, _val = run_with_args('%s --to-bin' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-hex' % bin_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-obj' % hex_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-hex' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-bin %s' % (hex_fp, bin2_fp))
stdout += _out; stderr += _err; assert _val == 0;
assert (md5(open(bin_fp,'rb').read()).hexdigest() ==
md5(open(bin2_fp,'rb').read()).hexdigest())
_out, _err, _val = run_with_args('%s --to-obj' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-exe' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-bin' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-hex' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-c' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-python' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-bash' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-pretty' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-safeasm' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-asm %s' % (obj_fp, asm2_fp))
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-exe' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-bin' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-hex' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-c' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-python' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-bash' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-pretty' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('%s --to-safeasm' % obj_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-obj' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-exe' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-bin' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-hex' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-c' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-python' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-bash' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-pretty' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
_out, _err, _val = run_with_args('-c %s --to-safeasm' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
# TODO add "chain" tests
_out, _err, _val = run_with_args('%s --to-exe' % asm_fp)
assert os.popen(exe_fp).read().rstrip() == SECRET_STR
print('Output of the shellcode matches!')
shutil.rmtree(tmp_dir)
os.unlink(secret_fp)
return stdout.strip(), stderr, 0
def test_get_start_address():
stdout, stderr = '', ''
tmp_dir = mkdtemp()
asm_fp = join(tmp_dir, 'shellcode.asm')
exe_fp = join(tmp_dir, 'shellcode.exe')
secret_fp = '/tmp/secret'
os.system('echo "%s" > %s' % (SECRET_STR, secret_fp))
kernel = ShellNoob.get_kernel()
if kernel == 'Linux':
shutil.copyfile(join(dirname(__file__), 'samples/x86-linux/open-read-write.asm'), asm_fp)
elif kernel == 'FreeBSD':
shutil.copyfile(join(dirname(__file__), 'samples/x86-freebsd/open-read-write.asm'), asm_fp)
else:
raise Exception('testing on kernel %s not supported' % kernel)
_out, _err, _val = run_with_args('%s --to-exe' % asm_fp)
stdout += _out; stderr += _err; assert _val == 0;
snoob = ShellNoob()
start_addr = snoob.get_start_address(exe_fp)
assert re.match('0x[0-9a-f]+', start_addr)
shutil.rmtree(tmp_dir)
os.unlink(secret_fp)
return stdout, stderr, 0
def test_interactive(_input, args):
stdout, stderr = '', ''
_out, _err, _val = run_with_args_input(_input, args + ' -i')
stdout += _out; stderr += _err; assert _val == 0;
return stdout, stderr, 0
def run_with_args_input(_input='', args=''):
args += ' -q'
cmd = '%s %s' % (SHELLNOOB_FP, args)
print('Launching: %s (with input)' % (cmd))
p = Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate(input=cbytes(_input))
retval = p.returncode
return cstr(stdout), cstr(stderr), int(retval)
def run_with_args(args=''):
args += ' -q'
cmd = '%s %s' % (SHELLNOOB_FP, args)
print('Launching: %s' % cmd)
p = Popen(cmd, shell=True, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate(input='')
retval = p.returncode
return cstr(stdout), cstr(stderr), int(retval)
def run_all_tests():
kernel, hardware = ShellNoob.get_kernel(), ShellNoob.get_hardware()
entry = '%s#%s' % (kernel, hardware)
tot_test = 0
ok_test = 0
try:
tests = supported_features[entry]
except KeyError:
print('ERROR: No tests for this setup "%s"' % entry)
sys.exit(1)
for test_name, entries in tests.items():
for e in entries:
tot_test += 1
_input, expected = e
print('Running test %s - %s - %s' % (test_name, _input, str(expected)))
e_stdout, e_stderr, e_retval = expected
try:
stdout, stderr, retval = globals()[test_name](*_input)
if not re.search(e_stdout, stdout):
print(RED + 'ERROR STDOUT %s != %s (expected)' % (stdout, e_stdout) + ENDC)
continue
if not re.search(e_stderr, stderr):
print(RED + 'ERROR STDERR?g %s != %s (expected)' % (stderr, e_stderr) + ENDC)
continue
if retval != e_retval:
print(RED + 'ERROR RETVAL %s != %s (expected)' % (retval, e_retval) + ENDC)
continue
print(GREEN + 'OK' + ENDC)
ok_test += 1
except Exception as e:
print(RED + 'ERROR Exception while executing %s' % test_name + ENDC)
print(traceback.format_exc())
print('---------------------------')
if ok_test == tot_test:
print(GREEN + '%s/%s OK' % (ok_test, tot_test) + ENDC)
else:
print(RED + '%s/%s ERROR' % (ok_test, tot_test) + ENDC)
def main():
args = sys.argv
if '-t' in args:
t_idx = args.index('-t')
test_name = args[t_idx+1]
try:
globals()[test_name]()
except Exception as e:
print('ERROR EXCEPTION while running test %s' % test_name)
print(traceback.format_exc())
sys.exit(0)
run_all_tests()
if __name__== '__main__':
main()