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greatscottgadgets / facedancer

Implement your own USB device in Python, supported by a hardware peripheral such as Cynthion or GreatFET
BSD 3-Clause "New" or "Revised" License
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error from initialize_device in core.py #56

Open pk-mdt opened 3 years ago

pk-mdt commented 3 years ago

I am trying to proxy a device using a GF one. I validated this on 2 separate operating systems, Kali and Ubuntu, virtual and bare metal, respectively. The Ubuntu installation is using Python 3.6.9 and Kali is using Python 3.8.2 I have validated I can see the device using the sample code from the Greatfet issues, so the hardware appears to be working. `import greatfet

gf = greatfet.GreatFET() descriptor = gf.glitchkit.usb.capture_control_in( request= gf.glitchkit.usb.GET_DESCRIPTOR, value = gf.glitchkit.usb.GET_DEVICE_DESCRIPTOR, length = 18 ) print(descriptor) b'\x12\x01\x00\x02\x00\x00\x00@P\x1d\x89\x03\x01\x01\x02\x04\x01' However using the function in Facedancer generates the error: ` u = FacedancerUSBHostApp(verbose=3) Using GreatDancer Host backend.

u.initialize_device(assign_address=1, apply_configuration=1) Traceback (most recent call last): File "", line 1, in File "/usr/local/lib/python3.8/dist-packages/facedancer-2.9-py3.8.egg/facedancer/core.py", line 365, in initialize_device File "/usr/local/lib/python3.8/dist-packages/facedancer-2.9-py3.8.egg/facedancer/core.py", line 401, in read_ep0_max_packet_size File "/usr/local/lib/python3.8/dist-packages/facedancer-2.9-py3.8.egg/facedancer/core.py", line 395, in get_device_descriptor File "/usr/local/lib/python3.8/dist-packages/facedancer-2.9-py3.8.egg/facedancer/core.py", line 386, in get_descriptor File "/usr/local/lib/python3.8/dist-packages/facedancer-2.9-py3.8.egg/facedancer/core.py", line 291, in control_request_in File "/usr/local/lib/python3.8/dist-packages/facedancer-2.9-py3.8.egg/facedancer/backends/greathost.py", line 369, in send_on_endpoint OSError: Stalled! `

Qyriad commented 3 years ago

If you're trying to proxy a device, then you should be using FacedancerUSBApp and USBProxyDevice instead of FacedancerUSBHostApp. Look at scripts like facedancer-usbproxy.py and usbproxy-switch-invertx.py for examples.

pk-mdt commented 3 years ago

True, but I was just trying to enumerate the device so I could confirm USB1 worked, those two scripts I also had issues with and I wanted to confirm I had physical connectivity working before proxying. The OSError seemed to be universal across recent python versions so I wanted to raise the issue.

straithe commented 2 years ago

Do you still need assistance, @pk-r7 ?

pk-mdt commented 2 years ago

Yes the issue was never resolved.

straithe commented 2 years ago

Thank you for the update! I don't quite have the skills to assist you, but I will ensure someone on my team takes a look at this soon.