Revela Decompiler is a tool to decompile Move smart contracts from low-level bytecode form back to high-level source code.

Revela is also available online at revela.verichains.io. Currently our decompiler is compatible with Aptos blockchain.

Verichains is a leading blockchain security provider specializing in cryptanalysis, audits, and app security.

The groundbreaking Move language for smart contracts is revolutionizing the development of secure and resilient blockchains like Aptos. As contracts become more complex and play a vital role in safeguarding digital assets, it is essential to provide users with the means to verify the safety of the underlying code. Unfortunately, it becomes common to see Move-based protocols deployed solely in low-level bytecode form, without accompanying source code. This practice not only obfuscates the smart contracts’ functionality but also presents a significant barrier to security analysis, given that Move is a relatively new language and lacks tooling to easily analyze Move contracts.

In response to this challenge, Verichains has worked with Aptos Labs to develop Revela, the first-ever open-source tool designed to decompile Move bytecode back to its original source code, which can then be fed into the Move compiler once again. By empowering users to independently verify and analyze contract code, Revela establishes new industry standards for security, openness, and trust in the Aptos ecosystem.

Revela requires Rust compiler to build. From the root directory, execute the following command.

$ cargo build -p revela

The resulted binary revela can be found under the directory target/debug.

Run the following command to install Revela.

$ cargo install --path third_party/move/tools/revela

On MacOS and Linux, Revela is typically installed in directory ~/.cargo/bin. Ensure to have this path in your PATH environment variable so Revela can be executed from any location. This step can be done with the below command.

$ export PATH=~/.cargo/bin:$PATH

To decompile a Move bytecode file, pass its file path as a command line argument using --bytecode (or -b), as shown below.

$ revela --bytecode <file_path>

For example:

$ revela --bytecode third_party/move/tools/revela/tests/bytecode/BasicCoin.mv

Revela is released under the open source Apache License. If you utilize Revela, kindly acknowledge it within your product and provide a link to revela.verichains.io.