I have two files that I need help with.
File1.
Zip-file, encrypted with AES-256.
There are five files in the zip-file, and I have 4 of them.
File 2
PDF-file, encrypted with AES-128
Probably a dam long password
I don’t have tools like PRTK. Are there any other tools that I can use? Can the 4 files that I have from the zip-file help me?
yes, elcomsoft also do software, but, as with most, its at a price.
you have 4? , look at plaintext attacks. having files that are in the Zip can help, but only usually if you can use the same zip algorithm to zip them back up.
browse the forums for detail as subject has been covered before. search "plaintext"
some progs can even "guarantee" a crack, with time, but it much depends on which program/version zipped them.
if you have the suspects Pc maybe make a custom dictionary from culled words and run a dictionary attack.
kern
I can’t get plain-text to work with files that is encrypted with AES 256, with other files it works just find. Any tips of program that works on AES 256?
I have four files from the Zip-file the only thing I don’t have is the fifth file that is a text file.
And is there anything I can do with the PDF?
The PDF is just a few lines of text and I think I have some of the words, can that help me?
Elcomsoft and others claim to work with AES. whether or not it will work using plaintext on AES256 they don't make clear.
One problem, you possibly know, they mention plaintext attack expects all files to have used the same password. If they haven't, there's a workaround for that on the elcom site. its not great though.
regarding the PDF file, sorry, i've no idea.
Have you tried (for both of the above) compiling a user profiled dictionary and running with that ?
kern
Have you tried (for both of the above) compiling a user profiled dictionary and running with that ?
kern
Yes, it didnt work
The zip file is 3500kb and i have everything in it except a small text file on 50k.
So when I know 99% of the content of the file, can’t I take advantage of that?