delink [![Build Status]][actions] [![Discord Badge]][discord]

June 24, 2026 · View on GitHub

A splitting tool for decompilation projects.

Supported Formats:

  • Shared Object (.so) files with DWARF
  • Mach-O STABS and SYMTAB
  • Windows PE with PDB's (.exe/.pdb).
  • Any binary IDA can analyse, via the IDA import workflow.

IDA import

When you don't have debug info but do have an IDA database, you can split using IDA's analysis. There are two pieces, decoupled by a JSON file so delink never has to link against IDA:

  1. Export (inside IDA 9.x). Run crates/delink-ida/ida_export.py to write a small, human-readable JSON describing the architecture/segment layout, every function (boundaries + flags), the full address → name map, and the relocations IDA knows (its fixup table and offset-typed operands — the latter being the only relocation record for images with no .reloc, e.g. EXEs). The export carries no bytes:

    # headless (idat64.exe for a 64-bit database)
"idat.exe" -A -S"crates\delink-ida\ida_export.py delink.ida.json" database.idb

    or, interactively, File → Script file… and pick the script.

  2. Import + split (delink). Pass the JSON and the original binary (the bytes and the PE .reloc table come from there):

    delink ida-split delink.ida.json binary.exe -o ./output

    For x86 / x86-64 targets delink disassembles each function with iced-x86 to recover rel32 call/jump relocations, and combines IDA's relocations with the binary's .reloc table for absolute pointers, resolving every target through the exported name map. Output is COFF .obj for PE inputs (use --elf for ELF .o).

    As with the Mach-O splitter, the first run writes an editable idapro.json grouping ({ "<obj>": { "<sym>": {address, size, scope} } }) into the output directory. Edit it to group symbols into objects (and rename keys to rename files), then re-run with --idapro ./out/idapro.json.

Building

Install Rust via rustup.

git clone https://github.com/HaydnTrigg/delink.git
cd delink
cargo run --release

Or install directly with cargo:

cargo install --locked --git https://github.com/HaydnTrigg/delink.git delink

Binaries will be installed to ~/.cargo/bin as delink.

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.