Issues with 64-bit DLL Injection Shellcode on OpenBSD Ignoring Integer Pushes
I want to inject a 64 bit DLL into a 64 bit process on OpenBSD. The shellcode needs to push several 64 bit values onto the stack, including the old instruction pointer, the address of the DLL, and the address of the
When I assemble and run this code :
It seems to be ignoring the 64 bit integer pushes.
My assembly syntax should be correct and I have checked that there are no other errors in the code. I've also tried different values for the 64-bit integers, but the issue persists.
Any insights ?
LoadLibraryWhen I assemble and run this code :
It seems to be ignoring the 64 bit integer pushes.
My assembly syntax should be correct and I have checked that there are no other errors in the code. I've also tried different values for the 64-bit integers, but the issue persists.
Any insights ?
Solution
@Marvee Amasi The issue with your shellcode on OpenBSD is likely due to security features like W^X, which prevents memory regions from being writable and executable simultaneously, and strict requirements for stack alignment.
To address this, ensure that the memory region containing your shellcode is executable using
To address this, ensure that the memory region containing your shellcode is executable using
mprotectLoadLibrarypushgdb
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