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Forums > Requests > Looking for a cracker!
2017-01-07 00:40
Shine

Registered: Jul 2012
Posts: 181
Looking for a cracker!

<Post edited by moderator on 7/1-2017 02:11>

Hey dudes,

Mario Kriwanek ( MOK ) asked me to help him with a password protection on a music creation tool.

Name: Twice Effect Music Editor

It's not released until now of course. (AFAIK)

DOWNLOAD:
https://www.dropbox.com/s/x0zqmkhswbu27g9/tme%20b.prg
 
... 15 posts hidden. Click here to view all posts....
 
2017-01-07 04:00
CRT

Registered: Oct 2012
Posts: 85
A quick skimming of the machine code. It takes a 4 letter password and then takes each of those 4 letters to do various INC's and EOR's quite irregularly. No good entropy seen, horrible encryption in modern standards.

So roughly 400K combinations A-Z (a second on a modern PC to try them all) but a pain in the ass to verify that the result is complete (in a way a good encryption against lazy CSDB crackers).
2017-01-07 04:30
insane

Registered: Nov 2006
Posts: 8
And the first letter is <arrow-left> - petscii code $5f
2017-01-07 04:34
insane

Registered: Nov 2006
Posts: 8
<arrow-left>123 is the password :)
2017-01-07 04:39
CRT

Registered: Oct 2012
Posts: 85
insane: my only excuse: I had beers and was lazy :-D
2017-01-07 06:12
Shine

Registered: Jul 2012
Posts: 181
CRT = Cracking Rapid Transformation !!! <3

THANK YOU MATE! :D
2017-01-07 06:19
CRT

Registered: Oct 2012
Posts: 85
Shine, don't thank me. Thank insane.

I had put it for a task tomorrow but got beaten ;-)
2017-01-07 06:19
Shine

Registered: Jul 2012
Posts: 181
insane ... Sorry ... i was too fast with my eyes ... You are the guy. THANK YOU VERY MUCH!!! <3
2017-01-07 10:50
Angel of Death

Registered: Apr 2008
Posts: 164
Startaddress of the unpacked editor is $C000.
Unpacked memory range is about $1800 to $E800.
Put $99 in $200A to fix the graphicsbug in the font.
You're welcome. :)
2017-01-07 20:07
insane

Registered: Nov 2006
Posts: 8
@Shine: No Prob. @CRT: Beer was involved over here,too.
But I was right inside my Ballmer Peak :)
2017-01-07 20:35
CreaMD

Registered: Dec 2001
Posts: 2438
This was fun to read ;-)
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