Building MinGW32 + Clang 10 + wclang on Ubuntu 20.04

[janedoe-lab]

These changes required to make master branch of donut compile using Clang 10 with Mingw32 under Ubuntu 20.04.

Things working for me:

• Compiling release version of donut and loader 32/64bit in Ubuntu 20.04 using clang+lld from LLVM 10 running under mingw32 and wclang
• Generating donut shellcode using wine donut.exe -o shellcode.bin -b 1 -a 1 exec.exe
• Both 32 and 64 shellcodes work

What doesn't work:

• AMSI bypass does NOT work - it crashes right now inside generated shellcode's loader
• Debug version of loader32.exe/loader64.exe fail to load debug instance - fails on "Resolving address of CreateThread"
• dev branch does not work with these changes for me

[S4ntiagoP]

Nice work @janedoe-lab !
One question: Do you happen to know how to tell clang that it should use Intel syntax from the inline assembly?

[janedoe-lab]

Sorry, not experienced much in all these tools. This branch is a result of bruteforcing a right set of options to get it going, and not based on any prior knowledge of these tools :)

[S4ntiagoP]

understood, thanks 😄

[TheWover]

Since this is incomplete but may still be valuable to anyone attempting to do the same thing, I will not merge it for version 1.0 but will mark it as invalid and may revisit later.