Hacking How to backport 7.xx games to 6.72 or 5.05?

Zubair91

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Hello everyone, Got a problem and need some help.I've a pro on 6.72 using leeful's v10 host and it works greats with a very few failed exploits. The problem comes when I try to run newly dumped games like ac Valhalla, watch dogs legion, miles Morales, ghost of tsuhima and many other games.Every time i try to run any of these games it shows me error ce-40740-5. I've tried with spoofing the firmware to 7.55,8.03, 9,00 and 9.99 but still no luck and get the same ce-40740-5 error. then i tried back porting them using modded warfare and retro gamer74'''s tools but i get corrupt data error or reinstall game message when launching these back ported games with these tools. Can anyone please explain or help me backporting these by myself to run on lower firmware just like Cyb1k and opossio 893 do?
 

MostlyUnharmful

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You need to change the FW required (can be automated with tools) and if the title was developed with an SDK linked with a recent FW, you also need to replace the syscalls introduced with the new FW and used by the title with the equivalent in older FWs...
 
Last edited by MostlyUnharmful, , Reason: clarification

Zubair91

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You need to change the FW required (can be automated with tools) and if the title was developed with an SDK linked with a recent FW, you also need to replace the syscalls introduced with the new FW and used by the title with the equivalent in older FWs...
Thanks for the reply but can share a guide on how this can be done?
 

MostlyUnharmful

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Sure thing.

Assuming you have no idea on where to start, I'll suggest first to look on how arguments are passed to functions using the C calling conventions via the stack. Next step is get familiar with disassemblers, like Radare, Ghidra or Ida (Ida is probably the more famous but it's license isn't cheap).

You'll will also need to look at the ELF file format, so get a general idea how libraries are linked dynamically to executables and how to calculate the load address of a function cause you will not haven't a linker to do it for you but you are going to do it manually. I would say, try to modify a binary on a PC in a controlled environment with the help of a debugger before adventuring doing it blind on an hostile environment like a game console.

I'll guess that connecting the console's UART to a PC with a serial to USB adapter (you need to solder three wires) would help getting some clues on what's failing when running a binary that requires a higher FW. I'm sure there's a payload that can redirect errors to a serial port

When you are done with the above you can come back and we can get further... ^__~
 

Zubair91

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Sure thing.

Assuming you have no idea on where to start, I'll suggest first to look on how arguments are passed to functions using the C calling conventions via the stack. Next step is get familiar with disassemblers, like Radare, Ghidra or Ida (Ida is probably the more famous but it's license isn't cheap).

You'll will also need to look at the ELF file format, so get a general idea how libraries are linked dynamically to executables and how to calculate the load address of a function cause you will not haven't a linker to do it for you but you are going to do it manually. I would say, try to modify a binary on a PC in a controlled environment with the help of a debugger before adventuring doing it blind on an hostile environment like a game console.

I'll guess that connecting the console's UART to a PC with a serial to USB adapter (you need to solder three wires) would help getting some clues on what's failing when running a binary that requires a higher FW. I'm sure there's a payload that can redirect errors to a serial port

When you are done with the above you can come back and we can get further... ^__~
Thank you for being sarcastic.
 
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AncientBoi

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wakawaka

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viper3344

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Is 5.05 still more stable than 7.55? I just did a cold boot 7.55 EST right into HEN 1.1 3 times in a row. How much more stable can you be?
 

viper3344

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I just think the headache or maybe getting 1-2 KPs on 7.55 if that is much less time invested than backporting all these games.

Never have I spent more than 10 min getting my pro running HEN from a cold boot. Rest mode works perfectly. Just not worth it to not be on 7.55 imo
 

arfgh

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i wanted to backport some Conan Exiles update, but i cant understand the way to create the backports... It is about modules... i think !
 

White_Raven_X

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Is autobackport v1.11 any good? Anyone try it?

*Update*
After downloading it (and removing the attached Trojan virus) I installed and used the app... It's simple and works perfectly. You can even attach update files to the backport app and it automatically does everything for you. When finished it creates a folder with the game title and that's where the backport\update file is located. I backported all my 6.72 games to 5.05 and tested them. Works great!
 
Last edited by White_Raven_X,
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monkeytrident

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White_Raven_X can you upload this clean version you are using, I checked many sources for a clean version and saw many trojans thanks.
 

White_Raven_X

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White_Raven_X can you upload this clean version you are using, I checked many sources for a clean version and saw many trojans thanks.
I could not find a clean version, so I downloaded to usb and installed on offline computer. Then I removed Trojan and app still works. Let me see if I can zip it and put it up for u.

https://www.dropbox.com/s/fklm91mefuafk6x/AutoBackPort_V1_11.rar?dl=0

*This is not my software and i cant be held responsible for anything related to this software. Ive only removed the trojan virus and re compressed. use at your own risk.


Thanks and thumbs up is always appreciated.
 
Last edited by White_Raven_X,
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