Is it possible to unpassword codesys project?

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eftm8904
Posts: 2
Joined: Thu Jan 15, 2015 1:11 pm

Is it possible to unpassword codesys project?

Post by eftm8904 » Thu Jan 15, 2015 1:53 pm

Is it possible to unpassword codesys project (user group level 0-1 passwords)?
If yes, then how?

eftm8904
Posts: 2
Joined: Thu Jan 15, 2015 1:11 pm

Re: Is it possible to unpassword codesys project?

Post by eftm8904 » Wed Apr 29, 2015 5:14 pm

It was easy to unpassword groups. It took less than hour (If you going to do this manually)

Equal rojects with different passwords have field difference in 3 zones:
1) at address 162h 163h there is different signaturres that depends of some file parameters
2) at the end of file there is 4 bytes (apparently CRC\checksum)
3) at the tail of file there is group password fields in the structure like this:

- find label in text mode (this could be in Deutch or other language): Variable_Configuration
- then after label find in hex mode FF FF FF FF field
- after this folow fields with [lengthes+1] of group passwords (in my example 0B=11, so length 10 symbols)
- then find mark 01h after this follows encripted password
- there could be more passwords for other groups, they separated by 00h, 01h, 02h...
- end of password field markes with signature [cd cd cd cd cd cd cd cd]h
CoDeSys+ file v.2.3.9.25 example:
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56 61 72 69 61 62 6c 65 5f 43 6f 6e 66 69 67 75
72 61 74 69 6f 6e 00 00 09 00 00 00 ff ff ff ff
00 00 0b 00 00 00 01 94 97 96 91 90 93 92 9d 9c
95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 08
00 00 00 00 00 00 cd cd cd cd cd cd cd cd
How to decript: password encripted with symbol table. Every encripted byte matches always the same ASCII charbyte. Just create project and save it with differet passwords to see, what code mathes to what char.
Here you some chars from symboltable:
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"1" - 94h
"2" - 97h
"3" - 96h
"4" - 91h
"5" - 90h
"6" - 93h
"7" - 92h
"8" - 9Dh
"9" - 9Ch
"0" - 95h
"a" - E4h
"s" - F6h
"d" - E1h
"f" - E3h
"g" - E2h
"h" - EDh
"j" - EFh
"k" - EEh
"l" - E9h
"q" - F4h
"w" - F2h
"e" - E0h
"r" - F7h
"t" - F1h
"y" - FCh
"u" - F0h
"i" - ECh
"o" - EAh
"p" - F5h
"z" - FFh
"x" - FDh
"c" - E6h
"v" - F3h
"b" - E7h
"n" - EBh
"m" - E8h

la-ma
Posts: 6
Joined: Mon Jul 16, 2012 8:40 am

Re: Is it possible to unpassword codesys project?

Post by la-ma » Sat Feb 20, 2016 12:36 pm

Thanks, your method realy help me.
i have no need to crack my project. Only find what's wrong with machine it can't start.
So now it is possible to analise any condition at machine.

sergiotherock
Posts: 1
Joined: Sun Apr 21, 2013 2:54 am

Re: Is it possible to unpassword codesys project?

Post by sergiotherock » Wed Mar 25, 2020 5:34 pm

Additional caracters
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"°"-15h
"!"-84h
" " "-87h
"#"-86h
"$"-81h
"%"-80h
"&"-83h
"/"-8Ah
"("-8Dh
")"-8Ch
"="-98h
"?"-9Ah
"¡"-04h
"*"-8Fh
"¨"-0Dh
"["-FEh
"]"-F8h
"_"-FAh
":"-9Fh
";"-9Eh
"¿"-1Ah
" ' "-82h

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