I got 3 project on my plant for FX3U (all 3 of them).
1 project was made in GX IEC Developer, there arent problems with uploading him from plc. And there are passwords on the almost all blocks and the libraries.
Like this:
https://image.prntscr.com/image/PNvPyHm ... rsKBbw.png
And to unlock you must write the password in this menu:
https://image.prntscr.com/image/MHmDv66 ... a-cMCA.png
All i can do is download this project in PLC and upload with gx works2 or just developer in just simple LD with tons of code without any comments.
And there is no information about lenght or type of password in the manuals (like how many symbols/ which special symbols like `';></difference between A-a/etc).
2 project was made in GX Works2 and he is easily uploading from the PLC. In the project used user authentication:
https://image.prntscr.com/image/khHn9dA ... XALqYg.png
We know login and password for the user that cant open FBs and do changes:
https://image.prntscr.com/image/6-jO8Jh ... b-ajcw.png
But we know from the menu admin login and there is information about what password can be:
https://image.prntscr.com/image/JzcgxIH ... UYe3_Q.png
We still can use method of reading code like i described in first project.
And 3 project was made in GX Works2 without user authentication, but there passwords on all blocks:
https://image.prntscr.com/image/BuqRydR ... 9VyBLg.png
And we know what password can be:
https://image.prntscr.com/image/vkEoxoU ... N_VmQA.png
In this case of security - you cant upload program from plc even in simple LD, you got message that in the project no symbol information (which you cant upload in FX3U) and some of blocks got password, so... you even can write a password cause there no window for that, just a message.
I hope i described all in details, but if there are any questions - i will answer them. I got some ideas like bruteforce unlocking (put all possible combinations of password) but i cant find any programs for this. Or idk maybe there somewhere in the project hash file with the coded passwords (but in case of gx works2 there only 1 file contain all project). I dont know. I really need help. I googled this questions to death and even find some topics on this forum with the man that offered a help, i pm-ed him, but still no answer =( So... Thanks even if just read this message.
