ntrop

Usage

Usage: ntrop [OPTIONS] -- <FILES>...

Arguments:
  <FILES>...  Input files to compress

Options:
  -l, --list                      Shows various information about the files such as compression ratio
  -s, --strip                     Strip target(s) before packing
  -o, --output <OUTPUT>           Set the output filename(s), use '*' as a wildcard [default: *.ntp]
  -f, --filter-level <LOG_LEVEL>  Set the log level filter [default: INFO] [possible values: OFF, ERROR, WARN, INFO, DEBUG, TRACE]
  -h, --help                      Print help
  -V, --version                   Print version    

Supported Targets

	x86 (IA-32)	x86_64 (AMD64)	Armv6 (ARM32)	AArch64 (ARM64)
Windows	✅ pe32/x86	✅ pe64/x86_64	⌛ pe32/arm32	⌛ pe64/arm64
Linux	✅ elf32/x86	✅ elf64/x86_64	⌛ elf32/arm32	⌛ elf64/arm64
Mac	⌛ macho/i386	⌛ macho/amd64	⌛ macho/arm	⌛ macho/arm64

Windows

PE/COFF Parsing
PE Loading
- Properly support non-relocatable binaries (however rare, it’s possible to fail as windows may use their ImageBase address to load a library such as ntdll)
- Warn user about CF_GUARD enabled images
Fix IMAGE_OPTIONAL_HEADER(32/64) CheckSum field as described here and here

Linux

Startup implementation, and linker scripts:
- x86, x86_64
- ⌛ arm
- aarch64, alpha, hppa, htl, hurd, i386, ia64, m68k, mach, microblaze, mips nios2, nptl, powerpc, riscv, s390, sparc

Mac

Mach-O Parsing as described Apple’s OS X ABI Mach-O File Format Reference
Implement a Mach-O loader, documented in Apple’s Macho-O Programming Topics
Integrate Macho-O stub generation into the build system
Have the main executable identify and modify the generated the stub
Add cross-platform MacOS testing, probably through the use of Podman for speed

Releases

⚠️ Releases temporarily yanked due to Microsoft Defender false-positives. ⚠️