13475084749

Committed 22 Feb 2025 05:29PM UTC coverage: 70.912% (-0.1%) from 71.055%

Build # 13475084749

Build Type

push

github

Committed by

tesuji

Commit Message

change checksec=False on ELF class

There is no need to print checksec details every time. Most usecases
only need to view checksec once in a while.

Here is the `checksec=False` set before this patch:

```
> rg '\sELF\(' | rg checksec
pwnlib/libcdb.py:    local_libc = ELF(shell_path, checksec=False).libc
pwnlib/libcdb.py:    libc = ELF(filename, checksec=False)
pwnlib/libcdb.py:        >>> libc_path = ELF(which('ls'), checksec=False).libc.path
pwnlib/libcdb.py:    libc = ELF(libc_path, checksec=False)
pwnlib/elf/elf.py:                return ELF(lib, self._print_checksec)
pwnlib/elf/elf.py:        return ELF(exepath, checksec=False)
pwnlib/elf/elf.py:        return ELF(exepath, checksec=False)
pwnlib/commandline/libcdb.py:            exe = ELF(path, checksec=False)
pwnlib/commandline/checksec.py:            e = ELF(f)
pwnlib/data/templates/pwnup.mako:       ctx.binary = ELF(binary, checksec=False)
```

Run Details

3600 of 6410 branches covered (56.16%)

10 of 19 new or added lines in 8 files covered. (52.63%)

29 existing lines in 4 files now uncovered.

12833 of 18097 relevant lines covered (70.91%)

0.71 hits per line

Source File
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61.9

/pwnlib/commandline/elfpatch.py

from __future__ import absolute_import
from __future__ import division

import sys

import pwnlib.args
pwnlib.args.free_form = False

from pwn import *
from pwnlib.commandline import common

p = common.parser_commands.add_parser(
    'elfpatch',
    help = 'Patch an ELF file',
    description = 'Patch an ELF file'
)

p.add_argument('elf',help="File to patch")
p.add_argument('offset',help="Offset to patch in virtual address (hex encoded)")
p.add_argument('bytes',help='Bytes to patch (hex encoded)')


def main(a):
    if not a.offset.startswith('0x'):
        a.offset = '0x' + a.offset

    offset = int(a.offset, 16)
    bytes  = unhex(a.bytes)

    elf    = ELF(a.elf, checksec=False)
    elf.write(offset, bytes)
    getattr(sys.stdout, 'buffer', sys.stdout).write(elf.get_data())

if __name__ == '__main__':
    pwnlib.commandline.common.main(__file__, main)

1	from __future__ import absolute_import	1✔
2	from __future__ import division	1✔
3
4	import sys	1✔
5
6	import pwnlib.args	1✔
7	pwnlib.args.free_form = False	1✔
8
9	from pwn import *	1✔
10	from pwnlib.commandline import common	1✔
11
12	p = common.parser_commands.add_parser(	1✔
13	'elfpatch',
14	help = 'Patch an ELF file',
15	description = 'Patch an ELF file'
16	)
17
18	p.add_argument('elf',help="File to patch")	1✔
19	p.add_argument('offset',help="Offset to patch in virtual address (hex encoded)")	1✔
20	p.add_argument('bytes',help='Bytes to patch (hex encoded)')	1✔
21
22
23	def main(a):	1✔
24	if not a.offset.startswith('0x'):	×
25	a.offset = '0x' + a.offset	×
26
27	offset = int(a.offset, 16)	×
28	bytes = unhex(a.bytes)	×
29
NEW 30	elf = ELF(a.elf, checksec=False)	×
31	elf.write(offset, bytes)	×
32	getattr(sys.stdout, 'buffer', sys.stdout).write(elf.get_data())	×
33
34	if __name__ == '__main__':	1!
35	pwnlib.commandline.common.main(__file__, main)	×

Gallopsled / pwntools / 13475084749

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