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Device Driver Fuzzing

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injecting errors and non-spec behaviors from the device. IOCTL codesAccording to winioctl.h: IOCTL's are defined by the following bit layout. [Common |Device Type|Required Access|Custom|Function Code|Transfer Type] 31 30 16 15 14 13 12 2 1 0 Common - 1 Which can be helpful while reproducing os crashes. It basically operate in two modes. check over here

However, most test suites are either generic black box fuzz tests, which only verify the external access to a driver's IOCTL or WMI interfaces, or are written to test the specific Tool count: 73 BlackArch fuzzer Name Version Description Homepage afl 2.41b Security-oriented fuzzer using compile-time instrumentation and genetic algorithms ajpfuzzer 0.6 A command-line fuzzer for the Apache JServ Protocol (ajp13). In fuzzing mode it attaches it self to given user mode process and hooksDeviceIoControl!Kernel32. Jeffrey Walton says: September 25, 2011 at 9:28 pm > I’ve been thinking about what would be the best way to fuzz-test > a Linux kernel module, for example a filesystem. https://github.com/Cr4sh/ioctlfuzzer

What Is Usb Fuzzing

To run this script you should know at least ... Attach a remote debugger to the virtual machine. It selectively 'un-fuzzes' portions of a fuzzed file that is known to cause a crash, re-launches the targeted application, and sees if it still crashes.

Basic Reverse Engineering with GDB In computers, debugging is the process of locating and fixing or bypassing bugs (errors) in computer program code or the engineering of a ... Of course, it is also possible to retrieve valid IOCTL codes directlyby reverse engineering the driver. I'd never have gotten some of the multiprocessor stuff debugged without this. Facedancer21 Testing Closed-Source Binary Device Drivers with DDT.

wfuzz 56.153e55f Utility to bruteforce web applications to find their not linked resources. Usb Device Fuzzing Candea. RDI points to: struct _URB_SELECT_CONFIGURATION { struct URB_HEADER Hdr; PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor; USBD_CONFIGURATION_HANDLE ConfigurationHandle; USBD_INTERFACE_INFORMATION Interface; }; and R14 points to: typedef struct _USBD_INTERFACE_INFORMATION { USHORT Length; UCHAR InterfaceNumber; UCHAR AlternateSetting; UCHAR read this post here Pop Pop Ret Hacking & IT Security Stuff vendredi 30 mars 2012 [Tool/PoC] IOCTLbf - Scanning IOCTLs & Fuzzing Windows kernel drivers 1.

Finally, it is necessary to know at least one valid IOCTL codesupported by the target driver. Walking Heap Using Pydbg I'm a big fan of Pydbg. An interface is composed with one or more endpoints, and offers class functions (HID, mass storage, ...) or specific functions. Device Type - This is the type of device the IOCTL belongs to.

Usb Device Fuzzing

thefuzz 147.8c3d781 CLI fuzzing tool. The following code snippet corresponds to the 32-bit equivalent of the previous code snippet. What Is Usb Fuzzing And this is where a tool like "IOCTLbf" can be useful even if it's far from being perfect and won't beable to detect all the supported IOCTLs every time (depends on Ioctl Fuzzer Linux You signed out in another tab or window.

regehr says: September 12, 2011 at 9:45 pm Hi Patrick, thanks for the comments and good to hear from you. check my blog So, a reasonable approach would seem to be to write a user-space loader for compiled LKMs and then just call the object code directly. Typical usage example (run IOCTL Fuzzer with XML config and enable exceptions monitoring): > ioctlfuzzer.exe --config ioctlfuzzer.xml --exceptions ============================================== Using the fuzzer ============================================== General algorithm for fuzz-testing an application is as Make sure to apply a filter on "DEVICE_CONTROL" only and to selectonly the target driver. Facedancer Usb

Device drivers could perhaps be tested by running in an emulator (e.g. notspikefile 0.1 A Linux based file format fuzzing tool oat 1.3.1 A toolkit that could be used to audit security within Oracle database servers. These requests/descriptors are exchanged on the special endpoint 0: every new standard device connected must respond to requests sent to it. this content References (Articles/Tools) [1] IOCTL fuzzer, by eSage lab http://code.google.com/p/ioctlfuzzer/ [2] Device Drivers Vulnerability Research (with ioctlfuzzer), Avast a real case, by evilcry http://www.woodmann.com/forum/entry.php?183-Device-Drivers-Vulnerability-Research-Avast-a-real-case [3] Driver Development Part 2: Introduction to Implementing

Linus Torvalds appears to discard conventional wisdom of using tools such as GCC's static analyzer to help detect possible errors [1]. hodor 1.01be107 A general-use fuzzer that can be configured to use known-good input and delimiters in order to fuzz specific locations. See: http://www2.dac.com/46th//proceedings/slides/03U_3.pdf , I regehr says: September 25, 2011 at 8:37 pm Jakob, thanks for the links, this looks great.

This has for consequence a non exploitable kernel pool overflow.

In pseudocode, the size for the memset() looks like: EAX <- endpoint number If the number of endpoint is zero EAX <- EAX-1 EAX <- 0-1 = 0xffffffff EAX <- (EAX*0x14)+0x38 With some directed random testing from Incisive ISX. This XML log can be used to fuzz any driver further. Run fuzzer with XML configuration file: > ioctlfuzzer.exe --config ioctlfuzzer.xml Note: Kernel Debugger Communication engine uses breakpoints for interaction between debugger extension and target system (https://github.com/Cr4sh/DbgCb/blob/master/dbgcb_scheme.png), so, you can use VirtualKD

tcpcontrol-fuzzer 0.1 2^6 TCP control bit fuzzer (no ECN or CWR). I've been thinking about what would be the best way to fuzz-test a Linux kernel module, for example a filesystem. Fuzzing schedulers is super useful, actually. have a peek at these guys The second basic block does a call to USBSTOR_SyncSendUsbRequest() and takes as first parameter the URB previously created.

For a given device, only the fields "Function Code" and "Transfer Type"change for the different supported IOCTL codes. 2.2. pyjfuzz 137.3af4d14 Python JSON Fuzzer. This option will run fuzzer with the next system reboot. --exceptions - Enable exceptions monitoring. Function Code - This is the function code that the system or the user defined (custom bit set) Transfer Type - METHOD_IN_DIRECT, METHOD_OUT_DIRECT, METHOD_NEITHER, METHOD_BUFFERED, This the data transfer method to

IOCTLs may be filtered by the following parameters: * Path to executable file corresponding to a process from which an IOCTL request is sent. * IOCTL destination device name. * IOCTL uniofuzz 1337 The universal fuzzing tool for browsers, web services, files, programs and network services/ports uniscan 6.3 A simple Remote File Include, Local File Include and Remote Command Execution vulnerability scanner. So we looked into it. pulsar 31.baabdcc Protocol Learning and Stateful Fuzzing.

Exception monitoring is working through unexported function nt!KiDispatchException() pathing, which address obtained from Windows kernel debug symbols (they are automatically downloading from Microsoft's PDB server, during fuzzer initialization). hexorbase 6 A database application designed for administering and auditing multiple database servers simultaneously from a centralized location. After some time, we triggered a BSOD on Windows 8.1 x64. Fuzzing approach Our fuzzing architecture is based on a Facedancer [1] and Umap tool [2] to which we added some features: Traffic capture in PCAP for the emulated device; Traffic replay