Gallopsled / pwntools / 1

Committed 28 Jan 2022 10:58AM UTC coverage: 0.0% (-73.8%) from 73.823%

Build # 1

Build Type

push

github

Committed by

web-flow

Commit Message

Fix CI after Groovy Gorilla went away for libc unstrip test (#2025)

* Fix CI after Groovy Gorilla went away for libc unstrip test

Build elfutils 0.181 from source since we can't use builds
from a newer ubuntu version anymore.

* Install python wheels in CI

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13713 existing lines in 142 files now uncovered.

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/pwnlib/commandline/constgrep.py

1	#!/usr/bin/env python2
UNCOV 2	from __future__ import absolute_import	×
UNCOV 3	from __future__ import division	×
4
UNCOV 5	import argparse	×
UNCOV 6	import functools	×
UNCOV 7	import re	×
8
UNCOV 9	import pwnlib.args	×
UNCOV 10	pwnlib.args.free_form = False	×
11
UNCOV 12	from pwn import *	×
UNCOV 13	from pwnlib.commandline import common	×
14
UNCOV 15	p = common.parser_commands.add_parser(	×
16	'constgrep',
17	help = "Looking up constants from header files.\n\nExample: constgrep -c freebsd -m ^PROT_ '3 + 4'",
18	description = "Looking up constants from header files.\n\nExample: constgrep -c freebsd -m ^PROT_ '3 + 4'",
19	formatter_class = argparse.RawDescriptionHelpFormatter,
20	)
21
UNCOV 22	p.add_argument(	×
23	'-e', '--exact',
24	action='store_true',
25	help='Do an exact match for a constant instead of searching for a regex',
26	)
27
UNCOV 28	p.add_argument(	×
29	'regex',
30	help='The regex matching constant you want to find',
31	)
32
UNCOV 33	p.add_argument(	×
34	'constant',
35	nargs = '?',
36	default = None,
37	type = safeeval.expr,
38	help = 'The constant to find',
39	)
40
UNCOV 41	p.add_argument(	×
42	'-i', '--case-insensitive',
43	action = 'store_true',
44	help = 'Search case insensitive',
45	)
46
UNCOV 47	p.add_argument(	×
48	'-m', '--mask-mode',
49	action = 'store_true',
50	help = 'Instead of searching for a specific constant value, search for values not containing strictly less bits that the given value.',
51	)
52
UNCOV 53	p.add_argument(	×
54	'-c', '--context',
55	metavar = 'arch_or_os',
56	action = 'append',
57	type = common.context_arg,
58	choices = common.choices,
59	help = 'The os/architecture/endianness/bits the shellcode will run in (default: linux/i386), choose from: %s' % common.choices,
60	)
61
UNCOV 62	def main(args):	×
UNCOV 63	if args.exact:	×
64	# This is the simple case
UNCOV 65	print(cpp(args.regex).strip())	×
66	else:
67	# New we search in the right module.
68	# But first: We find the right module
UNCOV 69	if context.os == 'freebsd':	×
UNCOV 70	mod = constants.freebsd	×
71	else:
UNCOV 72	mod = getattr(getattr(constants, context.os), context.arch)	×
73
74	# Compile the given regex, for optimized lookup
75	if args.case_insensitive:	×
UNCOV 76	matcher = re.compile(args.regex, re.IGNORECASE)	×
77	else:
UNCOV 78	matcher = re.compile(args.regex)	×
79
80	# The found matching constants and the length of the longest string
UNCOV 81	out = []	×
UNCOV 82	maxlen = 0	×
83
UNCOV 84	constant = args.constant	×
85
UNCOV 86	for k in dir(mod):	×
87	# No python stuff
UNCOV 88	if k.endswith('__') and k.startswith('__'):	×
UNCOV 89	continue	×
90
91	# Run the regex
UNCOV 92	if not matcher.search(k):	×
UNCOV 93	continue	×
94
95	# Check the constant
UNCOV 96	if constant is not None:	×
UNCOV 97	val = getattr(mod, k)	×
UNCOV 98	if args.mask_mode:	×
UNCOV 99	if constant & val != val:	×
UNCOV 100	continue	×
101	else:
UNCOV 102	if constant != val:	×
103	continue	×
104
105	# Append it
UNCOV 106	out.append((getattr(mod, k), k))	×
UNCOV 107	maxlen = max(len(k), maxlen)	×
108
109	# Output all matching constants
UNCOV 110	for _, k in sorted(out):	×
UNCOV 111	print('#define %s %s' % (k.ljust(maxlen), cpp(k).strip()))	×
112
113	# If we are in match_mode, then try to find a combination of
114	# constants that yield the exact given value
115	# We do not want to find combinations using the value 0.
UNCOV 116	if constant and args.mask_mode:	×
UNCOV 117	mask = constant	×
UNCOV 118	good = []	×
UNCOV 119	out = [(v, k) for v, k in out if v != 0]	×
120
UNCOV 121	while mask and out:	×
UNCOV 122	cur = out.pop()	×
UNCOV 123	mask &= ~cur[0]	×
UNCOV 124	good.append(cur)	×
125
UNCOV 126	out = [(v, k) for v, k in out if mask & v == v]	×
127
UNCOV 128	if functools.reduce(lambda x, cur: x \| cur[0], good, 0) == constant:	×
UNCOV 129	print('')	×
UNCOV 130	print('(%s) == %s' % (' \| '.join(k for v, k in good), args.constant))	×
131
UNCOV 132	if __name__ == '__main__':	×
UNCOV 133	pwnlib.commandline.common.main(__file__)	×

Gallopsled / pwntools / 1

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