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Add support for one-time security codes (skotp) #275

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Add support for one-time security codes (skotp) #275

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3 changes: 3 additions & 0 deletions README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -282,6 +282,9 @@ by this tool are:
| Dual prompt | ``.../signin/challenge/dp/...`` |
| (Validate 2FA ) | |
+------------------+-------------------------------------+
| One-time | ``.../signin/challenge/skotp/...`` |
| security codes | |
+------------------+-------------------------------------+
| Backup code | ``... (unknown yet) ...`` |
| (printed codes) | |
+------------------+-------------------------------------+
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39 changes: 39 additions & 0 deletions aws_google_auth/google.py
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Original file line number Diff line number Diff line change
Expand Up @@ -333,6 +333,8 @@ def do_login(self):
sess = self.handle_iap(sess)
elif "challenge/dp/" in sess.url:
sess = self.handle_dp(sess)
elif "challenge/skotp/" in sess.url:
sess = self.handle_skotp(sess)
elif "challenge/ootp/5" in sess.url:
raise NotImplementedError(
'Offline Google App OOTP not implemented')
Expand Down Expand Up @@ -827,6 +829,41 @@ def handle_iap(self, sess):
# Submit SMS/VOICE token
return self.post(challenge_url, data=payload)

def handle_skotp(self, sess):
response_page = BeautifulSoup(sess.text, 'html.parser')
ltmpl = response_page.find('input', {'name': 'ltmpl'}).get('value')
flowname = response_page.find('input', {'name': 'flowName'}).get('value')
tl = response_page.find('input', {'name': 'TL'}).get('value')
gxf = response_page.find('input', {'name': 'gxf'}).get('value')
challenge_url = sess.url.split("?")[0]
challenge_id = challenge_url.split("skotp/")[1]

skotp_code = input("Enter https://g.co/sc one-time security code: ") or None

if not skotp_code:
raise ValueError(
"One-time security code required for {} but none supplied.".format(
self.config.username))

payload = {
'challengeId': challenge_id,
'challengeType': 37,
'continue': self.cont,
'ltmpl': ltmpl,
'scc': 1,
'sarp': 1,
'oauth': 1,
'flowName': flowname,
'faa': 1,
'TL': tl,
'gxf': gxf,
'Pin': skotp_code,
'TrustDevice': 'on',
}

# Submit SKOTP
return self.post(challenge_url, data=payload)

def handle_selectchallenge(self, sess):
response_page = BeautifulSoup(sess.text, 'html.parser')

Expand All @@ -842,6 +879,8 @@ def handle_selectchallenge(self, sess):
challenges.append(['SMS other phone', i.attrs.get("data-challengeentry")])
elif "challenge/sk/" in action:
challenges.append(['YubiKey', i.attrs.get("data-challengeentry")])
elif "challenge/skotp/" in action:
challenges.append(['One-time security code', i.attrs.get("data-challengeentry")])
elif "challenge/az/" in action:
challenges.append(['Google Prompt', i.attrs.get("data-challengeentry")])

Expand Down