UPX (Linux amd64) doesn't run in WSL

[kumarharsh]

• Your Windows build number: Version 10.0.17763.253

• What you're doing and what's happening: (Copy&paste the full set of specific command-line steps necessary to reproduce the behavior, and their output. Include screen shots if that helps demonstrate the problem.)

> wget https://github.com/upx/upx/releases/download/v3.95/upx-3.95-amd64_linux.tar.xz
> tar -xf upx-3.95-amd64_linux.tar.xz
> mv upx-3.95-amd64_linux upx64
> ./upx64/upx

• What's wrong / what should be happening instead:
  UPX doesn't run.

Failed to execute process './upx64/upx'. Reason:
exec: Exec format error
The file './upx64/upx' is marked as an executable but could not be run by the operating system.

> readelf -h ./upx64/upx
ELF Header:
  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF64
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           Advanced Micro Devices X86-64
...


> objdump -x -f -h -p ./upx64/upx | clip.exe

./upx64/upx:     file format elf64-x86-64
./upx64/upx
architecture: i386:x86-64, flags 0x00000102:
EXEC_P, D_PAGED
start address 0x0000000000465d10

Program Header:
    LOAD off    0x0000000000000000 vaddr 0x0000000000400000 paddr 0x0000000000400000 align 2**21
         filesz 0x0000000000066f5e memsz 0x0000000000066f5e flags r-x
    LOAD off    0x0000000000000000 vaddr 0x0000000000467000 paddr 0x0000000000467000 align 2**12
         filesz 0x0000000000000000 memsz 0x000000000038af30 flags rw-
   STACK off    0x0000000000000000 vaddr 0x0000000000000000 paddr 0x0000000000000000 align 2**4
         filesz 0x0000000000000000 memsz 0x0000000000000000 flags rw-

Sections:
Idx Name          Size      VMA               LMA               File off  Algn
SYMBOL TABLE:
no symbols

• Strace of the failing command, if applicable: (If some_command is failing, then run strace -o some_command.strace -f some_command some_args, and link the contents of some_command.strace in a gist here).
  https://gist.github.com/kumarharsh/d5f960c8f69645e12ca6ee49198ab70c

I see that #330 was closed some releases ago, but I'm still facing this issue.

[craigloewen-msft]

I was able to reproduce this issue on Windows 10 Version 18837.

[kspalaiologos]

Flat Assembler doesn't work too (installed using sudo apt-get install fasm).

[sein-tao]

this problem can also be reproduced on Windows 10 1903/version 18362, with wsl Ubuntu 18.04 LTS.

[moralrebuild]

Hit the same issue today on Windows 10 WSL Debian.

[casept]

Also facing this issue. Seems like it affects all binaries compressed with UPX, not just UPX itself.

[microsoft-github-policy-service]

This issue has been automatically closed since it has not had any activity for the past year. If you're still experiencing this issue please re-file this as a new issue or feature request.

Thank you!