EDL or Emergency DownLoad Mode is a special boot mode in Qualcomm Android devices that allows OEMs to force-flash firmware files. Specifically, the host uploads the following data structure, to FIREHORSE_BASE + ADDR_SCRATCH_OFFSET: The inner structures are described here (32 bit) and here (64 bit). Ok, thanks for the info, let's not hurry then, I'm still going to upload a batch of new firehoses tonight so that we can test them worldwide. EDL implements Qualcomms Sahara or Firehose protocol (on modern devices) to accept OEM-digitally-signed programmer in ELF file format (or in MBN file format on older devices). For instance, the following XML makes the programmer flash a new Secondary Bootloader (SBL) image (also transfered through USB). However, we soon realized that there were many corner cases with that approach, such as setting breakpoints on instructions that cross their basic block boundary that could cause invalid breakpoints to be hit. In this part we described our debugging framework, that enabled us to further research the running environment. I can't get it running, but I'm not sure, why. This gadget will return to GADGET 2. In this mode, the device identifies itself as Qualcomm HS-USB 9008 through USB. Next, set the CROSS_COMPILE_32 and CROSS_COMPILE_64 enviroment vars as follows: Then call make and the payload for your specific device will be built. Qualcomm's EDL & Firehose demystified. the last gadget will return to the original caller, and the device will keep processing Firehose commands. In this part we extend the capabilities of firehorse even further, making it . Whether that file works for the Schok won't tell you much,
complete Secure-Boot bypass attack for Nokia 6 MSM8937, that uses our exploit framework. Since the programmer replaces the SBL itself, we expect that it runs in very high privileges (hopefully EL3), an assumption we will later be able to confirm/disprove once code execution is achieved. Some of them will get our coverage throughout this series of blog posts. The programmer implements the Firehose protocol which allows the host PC to send commands to write into the onboard storage (eMMC, UFS). Research & Exploitation framework for Qualcomm EDL Firehose programmers, By Roee Hay (@roeehay) & Noam Hadad, Aleph Reseserch, HCL Technologies. We're now entering a phase where fundamental things have to be understood. please tell me the solution. Only unencrypted MSM8909-compatible format (the binary contents must start with ELF or "data ddc" signature). Its main routine is as follows: pbl2sbl_data is the data passed from the PBL to the SBL at the very end of the pbl_jmp_to_sbl function. We showed that such code, may get executed with the highest possible privileges in ARM processors, and can dump Boot ROMs of various such SoCs. Some fields worth noting include sbl_entry which is later set to the SBLs entry point, and pbl2sbl_data which contains parameters passed to the soon-to-be-jumped-to SBL (see next). ignore the access righs completely). I'm not sure if I'm using the right file, but I can see quite a bit of raw data being exchanged by using the client's --debug option. To defeat that, we devised a ROP chain that disables the MMU itself! I dont think the mother board is receiving power as the battery is dead. Credits & Activations. We presented our research framework, firehorse, and showed how we extracted the PBL of various SoCs. A screwdriver and a paper clip - Used to force the device into EDL mode prog_ufs_firehose_8996_lite.elf - Firehose programmer file for use with the EDL utility Since the firehose programmer is copyright LG, I cannot link to it as that would be unauthorized distribution of copyrighted work. HWID: 0x000940e100420050 (MSM_ID:0x000940e1,OEM_ID:0x0042,MODEL_ID:0x0050). Remove libusb1 for windows (libusb0 only), fix reset command, Fix sahara id handling and memory dumping, MDM9x60 support. Our XML Hunter searches the relevant memory for such pokes, and decodes the data, contained in the supplied attribute. If your Qualcomm device is already in a bricked state and shows nothing but a black screen, then chances are that it is already in Emergency Download Mode. Loading the programmer with IDA, quickly revealed that our obtained Firehose programmers also support the peek and poke tags, with the following format: These allow for arbitrary code execution in the context of the programmer, as demonstrated in our blog post. There are many guides [1,2,3,4,5,6,7] across the Internet for unbricking Qualcomm-based mobile devices. I must to tell you, I never, ever slow enough to comment on any site .but I was compelled to stop and say THANK YOU THANK YOU THANK . There are several ways to coerce that device into EDL. A defining property of debuggers is to be able to place breakpoints. In aarch32, each page table entry specifies a domain number (a number from 0 to 15), that controls the way the MMU provisions that pages access rights. Generally if the devices software is corrupted due to a wrong flash or any other software issue, it could be revived by flashing the firmware through Fastboot and Download modes. on this page we share more then 430 Prog_firehose files from different devices & SoC for both EMMC and UFS devices, You can use according your Requirement's. Note: use at own risk How to use: use with supported Box use with qfil Downloads: sbl maintains the SBL contextual data, where its first field points to a copy of pbl2sbl_data. At the beginning we naively implemented breakpoints for 2-byte Thumb instructions with 16-bit long invalid instructions (0xFFFF), however we soon realized it was problematic as they might actually result in valid 32-bit instructions, depending on the adjacent word. The reset handler (address 0x100094) of the PBL roughly looks as follows (some pseudo-code was omitted for readability). The said protocol(s) can then accept commands from a PC over USB to flash the firmware on a device using tools like QPST, QFIL, MSMDownload, etc. EDL mode implements the Qualcomm Sahara protocol, which accepts a digitally-signed programmer (an ELF binary in recent devices), that acts as a Second-stage bootloader. Modern such programmers implement the Firehose protocol. It may not display this or other websites correctly. We also encountered SBLs that test the USB D+/GND pins upon boot (e.g. If it is in a bootloop or cannot enter the OS, move to the second method. XML Hunting. Thats it! It soon loads the digitally-signed SBL to internal memory (imem), and verifies its authenticity. I don't think I've ever had a Qualcomm EDL cable work on a single LG phone I have ever had over the past decade. The figure on the left shows a typical boot process of an Android device, wherein the Primary Bootloader triggers the Secondary Bootloader, which in turn boots the complete Android system. ALEPH-2017029. EDL itself is a part of the Primary Bootloader (PBL) on Qualcomm Devices. Qualcomm EDL Firehose Programmers Peek and Poke Primitives Aleph Research Advisory Identifier QPSIIR-909 Qualcomm ID QPSIIR-909 Severity Critical Product Qualcomm Technical Details MSM (Qualcomm's SoC)-based devices, contain a special mode of operation - Emergency Download Mode (EDL). To know about your device-specific test points, you would need to check up on online communities like XDA. All of these guides make use of Emergency Download Mode (EDL), an alternate boot-mode of the Qualcomm Boot ROM (Primary Bootloader). Alcatel Onetouch Idol 3. As open source tool (for Linux) that implements the Qualcomm Sahara and Firehose protocols has been developed by Linaro, and can be used for program (or unbrick) MSM based devices, such as Dragonboard 410c or Dragonboard 820c. The client does report the programmer successfully uploaded, but I suspect that's not true. If a ufs flash is used, things are very much more complicated. In this mode, the device identifies itself as Qualcomm HS-USB 9008 through USB. (Nexus 6P required root with access to the sysfs context, see our vulnerability report for more details). I have an oppo made android mobile phone model no CPH1901 and want to put it into EDL mode try above mentioned methods using ADB but get not responding results. In the previous part we explained how we gained code execution in the context of the Firehose programmer. Sorry, couldn't talk to Sahara, please reboot the device ! You also wouldnt want your device to turn off while youre flashing the firmware, which could lead to unexpected results. My proposed format is the. You signed in with another tab or window. For aarch64 - CurrentEL, for aarch32 - CPSR.M. I've discovered a few that are unfused (Orbic Journey, Coolpad Snap, and Schok Classic). For example, for Nexus 6P (MSM8994) we used the following chain in order to disable the MMU Similarly to Nokia 6, we found the stack base address (0xFEC04000), dumped it, and chose a stored LR target (0xFEC03F88). Home EMMC Files All Qualcomm Prog eMMC Firehose Programmer file Download. The routine that probes whether or not to go into EDL is pbl_sense_jtag_test_points_edl: By tracing through this code, we concluded that address 0xA606C contains the test points status (0x8000 <=> shortened). Deeper down the rabbit hole, analyzing firehose_main and its descendants sheds light on all of the Firehose-accepted XML tags. Hopefully we will then be able to find a suitable page (i.e one that is both writable and executable), or change (by poke) the access permissions of an existing one. This error is often a false-positive and can be ignored as your device will still enter EDL. As an example, the figures below show these EDL test points on two different OEM devices Redmi Note 5A (on the left) and Nokia 6 (on the right). Nokia 6/5 and old Xiaomi SBLs), and reboot into EDL if these pins are shortened. Did a quick search and found the location of the test points on the Redmi 7A (Click to view the image). GADGET 5: The next gadget copies R0 to [R4], which we can control using GADGET 2: We return from this gadget to the original caller. In this part we presented an arbitrary code execution attack against Firehose programmers. Only input your real first name and valid email address if you want your comment to appear. Connect the phone to your PC while its in Fastboot mode. This method has a small price to pay. No, that requires knowledge of the private signature keys. Multiple usb fixes. Which version of 8110 do you have? In this mode, the device identifies itself as Qualcomm HS-USB 9008 through USB. Which, in our case, is the set of Qualcomm EDL programmer/loader binaries of Firehose standard. Some of these powerful capabilities are covered extensively throughout the next parts. Qualcomm Programmer eMMC UFS Firehose Download folder ArykTECH 349 subscribers Subscribe 40 Share 32K views 5 years ago In this video you will find complete list of available Qualcomm Programmer. All Qualcomm "Prog eMMC Firehose" Programmer file Download Qualcomm EMMC Prog Firehose files is a basic part of stock firmware for Qualcomm phones, It comes with .mbm extensions and stores the partition data, and verifies the memory partition size. EDL is implemented by the PBL. Launch the command-line tool in this same folder. Seems like CAT is using generic HWID for 8909 devices We got very lucky with this. In this part we extend the capabilities of firehorse even further, making it being able to debug Firehose programmers (both aarch32 and aarch64 ones) in runtime. Programmers are pieces of low-level software containing raw flash/read-write functionality that allows for reflashing, similar to Samsung's Odin mode or LG's flash. Does this mean, the firehose should work? As for remediation, vendors with leaked programmers should use Qualcomms Anti-Rollback mechanism, if applicable, in order to prevent them from being loaded by the Boot ROM (PBL), The problem is caused by customizations from OEMsOur Boot ROM supports anti-rollback mechanism for the firehose image., Exploiting Qualcomm EDL Programmers (5): Breaking Nokia 6's Secure Boot, Exploiting Qualcomm EDL Programmers (4): Runtime Debugger, Exploiting Qualcomm EDL Programmers (3): Memory-based Attacks & PBL Extraction, Exploiting Qualcomm EDL Programmers (2): Storage-based Attacks & Rooting, Exploiting Qualcomm EDL Programmers (1): Gaining Access & PBL Internals, Obtain and reverse-engineer the PBL of various Qualcomm-based chipsets (, Obtain the RPM & Modem PBLs of Nexus 6P (, Manifest an end-to-end attack against our Nokia 6 device running Snapdragon 425 (. To place breakpoints the battery is dead our vulnerability report for more details ), MDM9x60 support 're... 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