SSRF Sheriff - A Simple SSRF-testing Sheriff Written In Go


This is an SSRF testing sheriff written in Go. It was originally created for the Uber H1-4420 2019 London Live Hacking Event, but it is now being open-sourced for other organizations to implement and contribute back to.

Features
  • Repsond to any HTTP method (GET, POST, PUT, DELETE, etc.)
  • Configurable secret token (see base.example.yaml)
  • Content-specific responses
    • With secret token in response body
      • JSON
      • XML
      • HTML
      • CSV
      • TXT
    • Without token in response body
      • GIF
      • PNG
      • JPEG
      • MP3
      • MP4

Usage
go get github.com/teknogeek/ssrf-sheriff
cd $GOPATH/src/github.com/teknogeek/ssrf-sheriff
cp config/base.example.yaml config/base.yaml

# ... configure ...

go run main.go

Example Requests:
Plaintext
$ curl -sSD- http://127.0.0.1:8000/foobar
HTTP/1.1 200 OK
Content-Type: text/plain
X-Secret-Token: SUP3R_S3cret_1337_K3y
Date: Mon, 14 Oct 2019 16:37:36 GMT
Content-Length: 21

SUP3R_S3cret_1337_K3y
XML
$ curl -sSD- http://127.0.0.1:8000/foobar.xml
HTTP/1.1 200 OK
Content-Type: application/xml
X-Secret-Token: SUP3R_S3cret_1337_K3y
Date: Mon, 14 Oct 2019 16:37:41 GMT
Content-Length: 81

<SerializableResponse><token>SUP3R_S3cret_1337_K3y</token></SerializableResponse>

TODO
  • Dynamically generate valid responses with the secret token visible for
    • GIF
    • PNG
    • JPEG
    • MP3
    • MP4
  • Secrets in HTTP response generated/created/signed per-request, instead of returning a single secret for all requests
  • TLS support

Credit
Inspired (and requested) by Frans Rosén during his talk at BountyCon '19 Singapore


SSRF Sheriff - A Simple SSRF-testing Sheriff Written In Go SSRF Sheriff - A Simple SSRF-testing Sheriff Written In Go Reviewed by Zion3R on 9:00 AM Rating: 5