def main(args):
try:
o = getattr(sys.stdout, 'buffer', sys.stdout)
if not args.hex:
s = getattr(sys.stdin, 'buffer', sys.stdin).read().translate(None, whitespace.encode('ascii'))
o.write(unhex(s))
else:
o.write(unhex(''.join(args.hex)))
except TypeError as e:
sys.stderr.write(str(e) + '\n')
def main():
args = parser.parse_args()
try:
if not args.hex:
s = sys.stdin.read()
s = re.sub(r'\s', '', s)
sys.stdout.buffer.write(unhex(s))
else:
sys.stdout.buffer.write(unhex(''.join(sys.argv[1:])))
except TypeError as e:
sys.stderr.write(str(e) + '\n')
def main():
args = parser.parse_args()
try:
if not args.hex:
s = sys.stdin.read()
s = re.sub(r'\s', '', s)
sys.stdout.buffer.write(unhex(s))
else:
sys.stdout.buffer.write(unhex(''.join(sys.argv[1:])))
except TypeError as e:
sys.stderr.write(str(e) + '\n')
def binfmt_lookup(self):
"""Parses /proc/sys/fs/binfmt_misc to find the interpreter for a file"""
binfmt_misc = '/proc/sys/fs/binfmt_misc'
if not isinstance(self.process, process):
log.debug("Not a process")
return ''
if self.process._qemu:
return self.process._qemu
if not os.path.isdir(binfmt_misc):
log.debug("No binfmt_misc dir")
return ''
exe_data = bytearray(self.read(self.exe))
for entry in os.listdir(binfmt_misc):
keys = {}
path = os.path.join(binfmt_misc, entry)
try:
data = self.read(path)
except Exception:
continue
for line in data.splitlines():
try:
k,v = line.split(None)
except ValueError:
continue
keys[k] = v
if 'magic' not in keys:
continue
magic = bytearray(unhex(keys['magic']))
mask = bytearray('\xff' * len(magic))
if 'mask' in keys:
mask = bytearray(unhex(keys['mask']))
for i, mag in enumerate(magic):
if exe_data[i] & mask[i] != mag:
break
else:
return keys['interpreter']
return ''
def binfmt_lookup(self):
"""Parses /proc/sys/fs/binfmt_misc to find the interpreter for a file"""
binfmt_misc = '/proc/sys/fs/binfmt_misc'
if not isinstance(self.process, process):
log.debug("Not a process")
return ''
if self.process._qemu:
return self.process._qemu
if not os.path.isdir(binfmt_misc):
log.debug("No binfmt_misc dir")
return ''
exe_data = bytearray(self.read(self.exe))
for entry in os.listdir(binfmt_misc):
keys = {}
path = os.path.join(binfmt_misc, entry)
try:
data = self.read(path)
except Exception:
continue
for line in data.splitlines():
try:
k,v = line.split(None)
except ValueError:
continue
keys[k] = v
if 'magic' not in keys:
continue
magic = bytearray(unhex(keys['magic']))
mask = bytearray('\xff' * len(magic))
if 'mask' in keys:
mask = bytearray(unhex(keys['mask']))
for i, mag in enumerate(magic):
if exe_data[i] & mask[i] != mag:
break
else:
return keys['interpreter']
return ''
def main():
a = p.parse_args()
if not a.offset.startswith('0x'):
a.offset = '0x' + a.offset
offset = int(a.offset, 16)
bytes = unhex(a.bytes)
elf = ELF(a.elf)
elf.write(offset, bytes)
sys.stdout.write(elf.get_data())
def main():
a = p.parse_args()
if not a.offset.startswith('0x'):
a.offset = '0x' + a.offset
offset = int(a.offset, 16)
bytes = unhex(a.bytes)
elf = ELF(a.elf)
elf.write(offset, bytes)
sys.stdout.write(elf.get_data())
def json_send(hsh):
request = json.dumps(hsh).encode()
r.sendline(request)
for i in range(100):
received = json_recv()
encoding = received["type"]
enc_value = received["encoded"]
if encoding == "base64":
decoded = fiddling.b64d(enc_value).decode("utf-8")
elif encoding == "hex":
decoded = fiddling.unhex(enc_value).decode("utf-8")
elif encoding == "rot13":
decoded = codecs.decode(enc_value, "rot13")
elif encoding == "bigint":
decoded = long_to_bytes(int(enc_value, 16)).decode("utf-8")
elif encoding == "utf-8":
decoded = "".join(chr(n) for n in enc_value)
print(f"{i + 1} - Encoding: {encoding}:")
print(f"{enc_value} ==> {decoded}\n")
json_send({"decoded": decoded})
flag = r.recvline()
flag = json.loads(flag.decode())
print("\nFLAG:")
