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Peer Pressure, a persistent Xbox 360 softmod exploit released

Peer Pressure, a persistent Xbox 360 softmod exploit by Grimdoomer, has officially released v1.0.477, using DMA attacks during startup to run unsigned code.

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Peer Pressure, a persistent softmod exploit for the Xbox 360 by developer Grimdoomer, has been publicly released as v1.0.477 on GitHub.

The new softmod works by modifying the console's NAND image and HDD security sectors to trigger a series of DMA attacks during startup, exploiting a race condition when the security sectors are read off the hard drive, which results in the freedom to run unsigned code.

GitHub README said:
- Removes all code signing restrictions on executables files allowing you to run homebrew applications.
- Removes licensing and security checks for games, downloadable content, arcade games, indie games, etc.
- Includes 3 different modes to boot your console allowing you to easily switch between a hacked and retail state.
- Integrated softmod settings application with auto update functionality that'll alert you when a new update is available.
- Flash (NAND) write protection to prevent accidental modifications to your console's NAND image which could prevent your console from booting.
- Boot xell (linux, etc.) on startup by powering the console on via the eject button.
- Sideload DLLs into games/apps/etc. which can be used for things like loading RB3Enhanced, or allowing older dashboards (blades, NXE) to be used.
- Boot animation editor that allows for customizing the blades era boot animation.
Click to expand...

Not every single version of the Xbox 360 can use it, however. Xenon, Zephyr, Falcon, Jasper and Trinity boards are good to go but Corona and Winchester are unsupported as they have a hardware level fix for the exploit.

Unfortunately, DashLaunch and its plugins are not supported as those target the same low-level kernel hooks that the softmod exploits.

Installation guides can be found on the project's wiki, and as the disclaimer points out, things can go wrong badly enough to require a hardware NAND flasher to fix so you use it at your own risk!

:arrow: On-going discussion
:arrow: GitHub Repo
 
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"PeerPressure" (Xbox 360) softmod discussion

The posts below are from the above thread by SylverReZ in Microsoft Xbox 360 · 122 replies
SylverReZ
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A new Xbox 360 softmod called "PeerPressure" is currently in beta testing, and will released on October 9th October 7th. I recommend checking out Grimdoomer's video that goes into detail as to how it works. It revolves around a ROP chain when the southbridge retrieves the security sector from the HDD.

 
Last edited by SylverReZ,
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Poor winchester owners, no RGH for years and now no coldboot softmod. At least they still have badavatar.

Hopefully whatever the modification that lets you replace dvd drive with hdd can be ported across to rgh & jtag consoles when it comes out.
 
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Arlisbloxer05 said:
No DashLaunch plugin support fucking sucks, this whole softmod was the reason I bought a trinity to use this + ReLive to have essentially a blades console, now this?

Man, now I don't even fuckin want this softmod. I'll stick with BadAvatar 1.3.
Click to expand...
Just keep using ABadAvatar, that is a limitation of the exploit and that DashLaunch has problems due to how the kernel patches were written.
 
Last edited by SylverReZ,
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Immediately lost my interest when he said he would disallow Xbox Live stealth plugins. Very passive-aggressively.

I don't cheat. I have to make unlicensed copies because my 360 purchases on my Microsoft account do not work properly, and my disc drive is broken. A stealth server is the only way I can play these games online. I also prefer playing them with a Dualshock 4.

I really do not like that Grim dismissed any valid use case for using a stealth service, as if he's my personal Xbox cop and it makes cheating any more difficult. A reverse engineer of all people should know how stupid this is.

I'll keep using BadUpdate 1.2 to NOT cheat. Thanks.
 
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bonkmaykr said:
Immediately lost my interest when he said he would disallow Xbox Live stealth plugins. Very passive-aggressively.

I don't cheat. I have to make unlicensed copies because my 360 purchases on my Microsoft account do not work properly, and my disc drive is broken. A stealth server is the only way I can play these games online. I also prefer playing them with a Dualshock 4.

I really do not like that Grim dismissed any valid use case for using a stealth service, as if he's my personal Xbox cop and it makes cheating any more difficult. A reverse engineer of all people should know how stupid this is.

I'll keep using BadUpdate 1.2 to NOT cheat. Thanks.
Click to expand...
Hopefully others will adapt from his work to allow using that against his will.
 
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Arlisbloxer05 said:
No DashLaunch plugin support fucking sucks, this whole softmod was the reason I bought a trinity to use this + ReLive to have essentially a blades console, now this?

Man, now I don't even fuckin want this softmod. I'll stick with BadAvatar 1.3.
Click to expand...
Trinity is incredibly easy to RGH3. Learn to solder or find an already modded console.
 
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bonkmaykr said:
Immediately lost my interest when he said he would disallow Xbox Live stealth plugins. Very passive-aggressively.

I don't cheat. I have to make unlicensed copies because my 360 purchases on my Microsoft account do not work properly, and my disc drive is broken. A stealth server is the only way I can play these games online. I also prefer playing them with a Dualshock 4.

I really do not like that Grim dismissed any valid use case for using a stealth service, as if he's my personal Xbox cop and it makes cheating any more difficult. A reverse engineer of all people should know how stupid this is.

I'll keep using BadUpdate 1.2 to NOT cheat. Thanks.
Click to expand...
Same I'll probably stay on 1.3 but if it's open source it will be probably have a patch support from a fork
 
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Looking forward to the release! Too bad that we won't be able to make use of SSDs (yet), but I wonder what did he mean about replacing disc drive with secondary HDD which could be SSD? Will we lose the disc drive in favor of HDD? Custom 3d-printed mounting bracket?
 
I'm not worried about online multiplayer, (never used it) though no dashlaunch plugin support is sad.

I have one (Falcon v3) out of two consoles (the other being the E model) that I can softmod if I wish. And if he releases the source, extra features like dl plugin support will be added by one or more people I am sure.
 
Last edited by Vetus_Mundi,
Dragon91Nippon said:
Hopefully others will adapt from his work to allow using that against his will.
Click to expand...
And well, that just happened. Recently, it has been brought to my attention that a leaked build of "PeerPressure" has been circulating around Xbox modding servers that re-allows DashLaunch and stealth servers (such as XBGuard). I'm not sure if I would be allowed to re-upload it here because it's originally a private build, and that it could break GBAtemp's rules, but you'll be able to find it on Discord.
 
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SylverReZ said:
And well, that just happened. Recently, it has been brought to my attention that a leaked build of "PeerPressure" has been circulating around Xbox modding servers that re-allows DashLaunch and stealth servers (such as XBGuard). I'm not sure if I would be allowed to re-upload it here because it's originally a private build, and that it could break GBAtemp's rules, but you'll be able to find it on Discord.
Click to expand...

Hopefully he won't cancel it because of this.
 
Vetus_Mundi said:
Hopefully he won't cancel it because of this.
Click to expand...
Hopefully if he does someone else uses AI to recreate it. Someone less petty than him.

It's not like he can report it to Microsoft to get it patched. All he can do besides nothing is to cope and seethe.
Post automatically merged:

SylverReZ said:
And well, that just happened. Recently, it has been brought to my attention that a leaked build of "PeerPressure" has been circulating around Xbox modding servers that re-allows DashLaunch and stealth servers (such as XBGuard). I'm not sure if I would be allowed to re-upload it here because it's originally a private build, and that it could break GBAtemp's rules, but you'll be able to find it on Discord.
Click to expand...
It probably would. Temp unfortunately tends to side with less respectable people like Grim.
 
Last edited by Dragon91Nippon,
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SylverReZ said:
A new Xbox 360 softmod called "PeerPressure" is currently in beta testing, and will released on October 9th. I recommend checking out Grimdoomer's video that goes into detail as to how it works. It revolves around a ROP chain when the southbridge retrieves the security sector from the HDD.

Click to expand...


Sayonara, ABadAvatar! Hello, PeerPressure!
 
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bonkmaykr said:
Immediately lost my interest when he said he would disallow Xbox Live stealth plugins. Very passive-aggressively.

I don't cheat. I have to make unlicensed copies because my 360 purchases on my Microsoft account do not work properly, and my disc drive is broken. A stealth server is the only way I can play these games online. I also prefer playing them with a Dualshock 4.

I really do not like that Grim dismissed any valid use case for using a stealth service, as if he's my personal Xbox cop and it makes cheating any more difficult. A reverse engineer of all people should know how stupid this is.

I'll keep using BadUpdate 1.2 to NOT cheat. Thanks.
Click to expand...
Arlisbloxer05 said:
No DashLaunch plugin support fucking sucks, this whole softmod was the reason I bought a trinity to use this + ReLive to have essentially a blades console, now this?

Man, now I don't even fuckin want this softmod. I'll stick with BadAvatar 1.3.
Click to expand...
Dragon91Nippon said:
Hopefully others will adapt from his work to allow using that against his will.
Click to expand...
Personally, as someone who does like to actively engage with the some of the Xbox 360-related Discord communities, I find the discourse about no DashLaunch support to be becoming extremely nonsensical with users like this.

This guy literally went in multiple other servers just to vent his hatred for Ryan. For what its worth, after he literally got banned & clowned on by multiple other users, he did apologize about his behavior afterward.
1790960636863.jpeg
 
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Nadaman said:
Personally, as someone who does like to actively engage with the some of the Xbox 360-related Discord communities, I find the discourse about no DashLaunch support to be becoming extremely nonsensical with users like this.

This guy literally went in multiple other servers just to vent his hatred for Ryan. For what its worth, after he literally got banned & clowned on by multiple other users, he did apologize about his behavior afterward. View attachment 593639
Click to expand...
It's very disrespectful that this guy would start a huge drama fest over a complete nothingburger. Ryan has worked hard on making this exploit happen, and for somebody to leak it out in the wild, this shows zero respect towards the developer.

vassilakisdim said:
Is it possible that anyone could share the version with dashlaunch to me?
Click to expand...
Just wait until it comes out. How patient are you? It's just a week away.
 
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