![]() So, from my understanding, the binary won't execute unless a full system is emulated. ![]() But did'nt work and errored out with the same issue as before. I also tried chrooting and executing qemu in user mode. Tried to execute the webserver binary using QEMU user mode. At this point my suspicions are pointed towards some custom function baked inside the kernel that executes this command.) This mentioned command executes whenever a new process is created. I have narrowed it down to " sh -c kill -9 `ls -l /proc/*/exe 2>/dev/null |" <- This command. (An unknown process kills it periodically. But, whenever I try to do this, it gets killed automatically. Placed a pre-compiled gdbserver binary and tried to run it directly in the router. To do that, I have tried the following steps: What I want is to dynamically analyze the library file and catch the function calls from the webserver to the library file using gdb. My research found out that vendor has precompiled the webserver binaries as a stripped file and all of the server side processing functions are compiled as a stripped custom library file. But, I don't want to stop there, as I am pretty sure that this webserver contains tons of other vulnerabilities. However, I have already found a vulnerability, which I've disclosed to the vendor. ![]() The firmware is released this year so, I'm almost sure that the vendor has patched them. I have tested each and every one against the target router but none of it worked. The router runs an ancient webserver called Boa and this has several publicly available vulnerabilities. Need tips on emulation of MIPS-BE system using QEMU with the help of squashfs image file and uBoot Kernel image file extracted from the firmware file.Ī cheap unpopular GPON (Fiber ONU) device, which I have root shell access to.īeginner skills (binwalk, gdb, basic buffer overflow etc.)
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