Jailbreak Software Task

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A Jailbreak Software Task is a software task of removing limitations that a vendor attempted to hard-code into its software or services.



References

2023

  • (Wikipedia, 2023) ⇒ https://en.wikipedia.org/wiki/Privilege_escalation#Jailbreaking Retrieved:2023-7-10.
    • In computer security, jailbreaking is defined as the act of removing limitations that a vendor attempted to hard-code into its software or services.[1] A common example is the use of toolsets to break out of a chroot or jail in UNIX-like operating systems[2] or bypassing digital rights management (DRM). In the former case, it allows the user to see files outside of the filesystem that the administrator intends to make available to the application or user in question. In the context of DRM, this allows the user to run arbitrarily defined code on devices with DRM as well as break out of chroot-like restrictions. The term originated with the iPhone/iOS jailbreaking community and has also been used as a term for PlayStation Portable hacking; these devices have repeatedly been subject to jailbreaks, allowing the execution of arbitrary code, and sometimes have had those jailbreaks disabled by vendor updates.

       iOS systems including the iPhone, iPad, and iPod Touch have been subject to iOS jailbreaking efforts since they were released, and continuing with each firmware update.[3][4] iOS jailbreaking tools include the option to install package frontends such as Cydia and Installer.app, third-party alternatives to the App Store, as a way to find and install system tweaks and binaries. To prevent iOS jailbreaking, Apple has made the device boot ROM execute checks for SHSH blobs in order to disallow uploads of custom kernels and prevent software downgrades to earlier, jailbreakable firmware. In an "untethered" jailbreak, the iBoot environment is changed to execute a boot ROM exploit and allow submission of a patched low level bootloader or hack the kernel to submit the jailbroken kernel after the SHSH check.

      A similar method of jailbreaking exists for S60 Platform smartphones, where utilities such as HelloOX allow the execution of unsigned code and full access to system files.[5][6] or edited firmware (similar to the M33 hacked firmware used for the PlayStation Portable)[7] to circumvent restrictions on unsigned code. Nokia has since issued updates to curb unauthorized jailbreaking, in a manner similar to Apple.

      In the case of gaming consoles, jailbreaking is often used to execute homebrew games. In 2011, Sony, with assistance from law firm Kilpatrick Stockton, sued 21-year-old George Hotz and associates of the group fail0verflow for jailbreaking the PlayStation 3 (see Sony Computer Entertainment America v. George Hotz and PlayStation Jailbreak).


  1. "Definition of JAILBREAK" (in en). https://www.merriam-webster.com/dictionary/jailbreak. Retrieved 24 December 2022. 
  2. Cyrus Peikari; Anton Chuvakin (2004). Security Warrior: Know Your Enemy. "O'Reilly Media, Inc.". p. 304. ISBN 978-0-596-55239-8. https://archive.org/details/securitywarrior0000peik. 
  3. Template:Citation
  4. Reports: Next iPhone update will break third-party apps, bust unlocks Computerworld on v1.1.3
  5. Phat^Trance (Feb 16, 2010). "Announcement: Forum down for maintaining". http://dailymobile.se/forum/index.php?topic=1165.0. Retrieved August 30, 2016. "Just wanted to let you guys know that the forum is down for maintaining. It will be back online in a day or so (i kinda messed up the config files and need to restore one day old backup, so i thought why not update the entire server platform)" 
  6. HelloOX 1.03: one step hack for Symbian S60 3rd ed. phones, and for Nokia 5800 XpressMusic too
  7. Bypass Symbian Signed & Install UnSigned SISX/J2ME Midlets on Nokia S60 v3 with Full System Permissions