Source code, and (a little) document on github:
https://github.com/Jimmy-Z/TWLbf/
windows binary download
https://github.com/Jimmy-Z/TWLbf/releases
https://github.com/Jimmy-Z/bfCL/releases OpenCL rewrite
You'll need NAND dump and one of the ID to be possible to brute out the other one.
update: with the brilliant idea from...
TWLbf - a tool to brute force DSi Console ID or EMMC CID
https://github.com/Jimmy-Z/TWLbf/
windows binary download
https://github.com/Jimmy-Z/TWLbf/releases
https://github.com/Jimmy-Z/bfCL/releases OpenCL rewrite
You'll need NAND dump and one of the ID to be possible to brute out the other one.
update: with the brilliant idea from...
TWLbf - a tool to brute force DSi Console ID or EMMC CID