[pwntools]pwnlib.util

pwntools 모듈 정리

pwnlib.util

bits

pwnlib.util.fiddling.bits(s, endian = 'big', zero = 0, one = 1) → list

>>> bits(100)
'[0, 1, 1, 0, 0, 1, 0, 0]'
>>> sum(bits(100)
3
>>> bits('ABC')
[0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1]
>>> ''.join(bits(511,zero='_',one='-'))
'________---------'
>>> ''.join(bits(511,endian='little',zero='_',one='-')
'---------_______' 

unbits

pwnlib.util.fiddling.unbits(s, endian = 'big') → str

>>> unbits('0100000101000001')
'AA'

bits_str

pwnlib.util.fiddling.bits_str(s, endian = 'big', zero = '0', one = '1') → str

bits()는 list로 반환하는 반면에 bits_str()은 비트 값을 str로 반환한다.

>>> bits_str('flag')
'01100110011011000110000101100111'

bitswap

pwnlib.util.fiddling.bitswap(s) → str

1바이트씩 bit값을 뒤집는다고 보면 된다.

ex) 01101101 -> 10110110

>>> bitswap('ab')
'\x86F'

enhex

pwnlib.util.fiddling.enhex(x) → str

>>> enhex('abcd')
'61626364'
>>> 'abcd'.encode('hex')
'61626364'

unhex

pwnlib.util.fiddling.unhex(s) → str

>>> unhex('666c6167')
'flag'
>>> '666c6167'.decode('hex')
'flag'

hexdump

pwnlib.util.fiddling.hexdump(s, width=16, skip=True, hexii=False, begin=0, style=None, highlight=None, cyclic=False)

>>> hexdump(list(map(chr, range(256))),width=16,begin=0x12345678)
12345678  00 01 02 03  04 05 06 07  08 09 0a 0b  0c 0d 0e 0f  │····│····│····│····│
12345688  10 11 12 13  14 15 16 17  18 19 1a 1b  1c 1d 1e 1f  │····│····│····│····│
12345698  20 21 22 23  24 25 26 27  28 29 2a 2b  2c 2d 2e 2f  │ !"#│$%&'│()*+│,-./│
123456a8  30 31 32 33  34 35 36 37  38 39 3a 3b  3c 3d 3e 3f  │0123│4567│89:;│<=>?│
123456b8  40 41 42 43  44 45 46 47  48 49 4a 4b  4c 4d 4e 4f  │@ABC│DEFG│HIJK│LMNO│
123456c8  50 51 52 53  54 55 56 57  58 59 5a 5b  5c 5d 5e 5f  │PQRS│TUVW│XYZ[│\]^_│
123456d8  60 61 62 63  64 65 66 67  68 69 6a 6b  6c 6d 6e 6f  │`abc│defg│hijk│lmno│
123456e8  70 71 72 73  74 75 76 77  78 79 7a 7b  7c 7d 7e 7f  │pqrs│tuvw│xyz{│|}~·│
123456f8  80 81 82 83  84 85 86 87  88 89 8a 8b  8c 8d 8e 8f  │····│····│····│····│
12345708  90 91 92 93  94 95 96 97  98 99 9a 9b  9c 9d 9e 9f  │····│····│····│····│
12345718  a0 a1 a2 a3  a4 a5 a6 a7  a8 a9 aa ab  ac ad ae af  │····│····│····│····│
12345728  b0 b1 b2 b3  b4 b5 b6 b7  b8 b9 ba bb  bc bd be bf  │····│····│····│····│
12345738  c0 c1 c2 c3  c4 c5 c6 c7  c8 c9 ca cb  cc cd ce cf  │····│····│····│····│
12345748  d0 d1 d2 d3  d4 d5 d6 d7  d8 d9 da db  dc dd de df  │····│····│····│····│
12345758  e0 e1 e2 e3  e4 e5 e6 e7  e8 e9 ea eb  ec ed ee ef  │····│····│····│····│
12345768  f0 f1 f2 f3  f4 f5 f6 f7  f8 f9 fa fb  fc fd fe ff  │····│····│····│····│

b64e

pwnlib.util.fiddling.b64e(s) → str

>>> b64e('test')
'dGVzdA=='

b64d

pwnlib.util.fiddling.b64d(s) → str

>>> b64d('dGVzdA==')
'test'

urlencode

pwnlib.util.fiddling.urlencode(s) → str

>>> urlencode('/bin/sh')
'%2f%62%69%6e%2f%73%68'

urldecode

pwnlib.util.fiddling.urldecode(s, ignore_invalid = False) → str

>>> urldecode('%2f%62%69%6e%2f%73%68')
'/bin/sh'

xor

pwnlib.util.fiddling.xor(*args, cut = 'max') → str

xor_key

pwnlib.util.fiddling.xor_key(data, size=None, avoid='x00n') -> None or (int, str)

xor_pair

pwnlib.util.fiddling.xor_pair(data, avoid = 'x00n') -> None or (str, str)