Really poor code quality

[Frago9876543210]

E:\demos>ml64 cleaned_file.asm /link /entry:main
Microsoft (R) Macro Assembler (x64) Version 14.29.30138.0
Copyright (C) Microsoft Corporation.  All rights reserved.

 Assembling: cleaned_file.asm
cleaned_file.asm(109) : error A2075:jump destination too far : by 41 byte(s)

[hasherezade]

Please read the message printed by masm_shc during the conversion. It informs that changing the jumps is required, and this part is currently not automated in the tool, so it has to be done manually:

[INFO] Entry Point: AlignRSP
[INFO] Strings have been inlined. It may require to change some short jumps (jmp SHORT) into jumps (jmp)

It exactly references to the line you mentioned:

cleaned_file.asm(109) : error A2075:jump destination too far : by 41 byte(s)

So you need to change it from:

	jmp	SHORT $LN1@main

to:

	jmp  $LN1@main

it was described in the paper.

[hasherezade]

Another thing that you missed by not reading the messages is, the Entry Point of 64-bit module should not be main, but AlignRSP - this is the added stub that prepares the alignment before the main can be run. In basic cases like this it does not make a much difference, but in other cases the app may crash if you omit this stub.

[INFO] Entry Point: AlignRSP

So it should be:

E:\demos>ml64 cleaned_file.asm /link /entry:AlignRSP