pkzip password

[eychei]

Its me again

I am hitting a wall here.

So I have a ZipCrypto Deflate XML file in a Zip. This XML file does start with a <?xml version="1.0" .

When using rbkcrack I can get a key buuuuttt this seems not to work for extrating the files. This is reasonable because the file is also compressed and my plaintext is not.

I compiled bkcrack and p7zip just to make sure. No change in the key.

So my problem is, how can I find the deflated plaintext for the XML file?
Can I just use the first 19 bytes and zip it with deflate and use the hex bytes for the attack? How can I find the exact compression method. Because changing anything (compression rate) will change the data.

-e