mytechgroup Posted January 27, 2009 Share Posted January 27, 2009 I came across a file which contains a hash code at end of file. if you change any thing from file the file becomes useless i.e invalid file. e.g one of the hash code is 29AD6395CEE1111266CA0F53526FF06C8EAC8D0575888685A0AC7EBD7BC4D232A1F6EFFC262DCE6E can anyone help to decrypt this hash code. Quote Link to comment Share on other sites More sharing options...
digip Posted January 27, 2009 Share Posted January 27, 2009 I came across a file which contains a hash code at end of file. if you change any thing from file the file becomes useless i.e invalid file. e.g one of the hash code is 29AD6395CEE1111266CA0F53526FF06C8EAC8D0575888685A0AC7EBD7BC4D232A1F6EFFC262DCE6E can anyone help to decrypt this hash code. Well, if its straight hex code, then its most likely just compiled program data: )c•ÎáfÊSRoðlŽ¬uˆ†… ¬~½{ÄÒ2¡öïü&-În Quote Link to comment Share on other sites More sharing options...
mytechgroup Posted January 28, 2009 Author Share Posted January 28, 2009 Well, if its straight hex code, then its most likely just compiled program data: )c•ÎáfÊSRoðlŽ¬uˆ†… ¬~½{ÄÒ2¡öïü&-În I Don't think it's a compiled program data as the file is simple text file. one thing i came to know is it contains date-time-stamp.and no. 4 is also there in it. i want to decrypt it so that i can change 4 to 1 Quote Link to comment Share on other sites More sharing options...
H@L0_F00 Posted January 28, 2009 Share Posted January 28, 2009 I Don't think it's a compiled program data as the file is simple text file. one thing i came to know is it contains date-time-stamp.and no. 4 is also there in it. i want to decrypt it so that i can change 4 to 1 You can't really begin to decrypt anything without knowing what encryption method was used. Where did you get this file? And is there anything readable in it? Quote Link to comment Share on other sites More sharing options...
digip Posted January 28, 2009 Share Posted January 28, 2009 Can you post the whole file, give us some more info to go on here? Like, where did you get it, and why is there something you want to change from a 4 to a 1? What kind of file is it? What is it you want to accomplish? Quote Link to comment Share on other sites More sharing options...
stingwray Posted January 28, 2009 Share Posted January 28, 2009 Well unless you know what the hashing function is, you can wait until hell freezes over and then some to be able to brute force the hash. See you next century. Quote Link to comment Share on other sites More sharing options...
aeturnus Posted January 30, 2009 Share Posted January 30, 2009 I came across a file which contains a hash code at end of file. if you change any thing from file the file becomes useless i.e invalid file. e.g one of the hash code is 29AD6395CEE1111266CA0F53526FF06C8EAC8D0575888685A0AC7EBD7BC4D232A1F6EFFC262DCE6E can anyone help to decrypt this hash code. Have you considered that there isn't anything to "decrypt" from this hash? That is, it sounds like the hash is just a digest of the rest of the file used for an integrity check. But again, it'd be easier to tell if we had more information. Quote Link to comment Share on other sites More sharing options...
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