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m (→‎Exploit: I read the console logs. and was very entertained.)
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[[File:Absinthe204win.png|thumb|right|Absinthe Version 2.0.4 on Windows]]
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Absinthe is the [[S5L8940]] userland jailbreak tool for [[N94ap|iPhone 4S]] and [[iPad 2]] on iOS 5.0 (iPhone 4S only), 5.0.1 (9A405) and [[Telluride 9A406 (iPhone 4S)|iOS 5.0.1 build 9A406]] on iPhone 4S. This tool was released on January 20, 2012, and is available in three incarnations:
  
  +
'''Absinthe''' is the [[S5L8940|A5]] [[userland]] jailbreak tool for [[N94AP|iPhone 4S]] and [[iPad 2]] on iOS 5.0 (iPhone 4S only) and 5.0.1. This tool was released on {{date|2012|01|20}}, and is available in three incarnations:
 
*A GUI tool with the same name, released by the [[Chronic Dev (team)|Chronic Dev Team]]
  
*A GUI tool with the same name, released by the [[Chronic Dev (team)|Chronic Dev Team]]
 
*A command-line version by the [[iPhone Dev Team]], in case troubleshooting is required
  
*A command-line version by the [[iPhone Dev Team]], in case troubleshooting is required
−
*A future integration with [[redsn0w]]
 +
*An integration with [[redsn0w]]
   
  +
Newer versions (2.0 - 2.0.4) supported all devices from iOS 5.0.1 and 5.1.1. This preinstalled [[Rocky Racoon]] from [[Cydia.app|Cydia]] to untether.
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==Installation==
  
  +
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The jailbreak packs [[Corona]] for the [[S5L8940]] and the rest of the firmware patches in a regular [[iTunes]] backup and then restores this backup on to the device, which injects the required files. It is then completed by opening a web clip added to the [[SpringBoard|home screen]] by Absinthe that uses an exploit in [[/Applications/MobileSafari.app|Safari]] to install [[Cydia]]. If this doesn't work, for example, because the [[greenpois0n]] website is down due to the number of people attempting to jailbreak, an alternative is to enable a specially crafted VPN connection in the [[/Applications/Preferences.app|Settings]] app.
  
  +
The name Absinthe was chosen as an homage to [[greenpois0n]], Chronic Dev Team's earlier jailbreak software. [[wikipedia:Absinthe|Absinthe]] is an alcoholic beverage that is often greenish in color and is poisonous in quantity.
  +
  +
== Installation ==
  +
The jailbreak packs [[Corona]] for the [[S5L8940]] and the rest of the firmware patches in a regular [[iTunes]] backup and then restores this backup on to the device, which injects the required files. It is then completed by opening a web clip added to the [[SpringBoard|home screen]] by Absinthe. If this doesn't work, for example, because the [[greenpois0n]] website is down due to the number of people attempting to jailbreak, an alternative is to enable a specially crafted VPN connection in the [[/Applications/Preferences.app|Settings]] app.
   
 
==Exploit==
  
==Exploit==
 
{{main|Corona}}
  
{{main|Corona}}
  +
{{main|Rocky Racoon}}
−  
−
This jailbreak uses the [[Racoon String Format Overflow Exploit]] and [[HFS Heap Overflow]] from [[Corona]] for untether.
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This jailbreak uses the [[Racoon String Format Overflow Exploit]] and [[HFS Heap Overflow]] from [[Corona]] for [[untethered jailbreak|untether]].
 
The exact exploit to jailbreak the two devices is not known yet, but it is assumed that the web clip loads a page that requires an IPsec VPN connection, which causes the [http://ipsec-tools.sourceforge.net racoon] daemon to start and run the jailbreak payload.
  
The exact exploit to jailbreak the two devices is not known yet, but it is assumed that the web clip loads a page that requires an IPsec VPN connection, which causes the [http://ipsec-tools.sourceforge.net racoon] daemon to start and run the jailbreak payload.
   
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However, some poking reveals some unique means of injection. At some point in the jailbreak process, libmobilecopy.dylib and/or MobileBackup are intentionally crashed to produce a crash log. The jailbreak payload reads this crash log in order to obtain memory addresses to continue with the exploit.
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However, some poking reveals some unique means of injection. At some point in the jailbreak process, [[BackupAgent]] is intentionally crashed to produce a crash log. The jailbreak payload reads this crash log in order to obtain the memory address of libcopyfile.dylib to continue with the exploit.
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Opening the <code>webclip_Info.plist</code> file included with the GUI tool, which is the definition file for the web clip, [http://cache.greenpois0n.com/abs0/index.html an URL to the greenpois0n website][dead] is found, which shows a please wait message. The interesting part is the source code of this page has an image linked to <code>http://127.0.0.1/trigger.png</code>, because <code>127.0.0.1</code> was designated as the trigger site for a VPN on-demand configuration and any attempt at accessing a resource on <code>127.0.0.1</code> will trigger the VPN. Note that there is no actual web server running on <code>localhost</code>.
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  +
==Compatibility==
  +
  +
{| class="wikitable"
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|-
  +
! scope="col" |
  +
! scope="col" | 5.0 (9A334)
  +
! scope="col" | 5.0.1 (9A406)
  +
! scope="col" | 5.0.1 (9A405)
  +
! scope="col" | 5.1 (9B179)
  +
! scope="col" | 5.1 (9A405)
  +
! scope="col" | 5.1.1 (9B206)
  +
! scope="col" | 5.1.1 (9B208)
  +
|-
  +
! scope="row" | [[N88AP|iPhone 3GS]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[N90AP|iPhone 4 (GSM)]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{yes}}
  +
|-
  +
! scope="row" | [[N92AP|iPhone 4 (CDMA)]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[N94AP|iPhone 4S]]
  +
| {{yes}}
  +
| {{yes}}
  +
| {{yes}}
  +
| {{no}}
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[K48AP|iPad]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[K93AP|iPad 2 Wi-Fi]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[K94AP|iPad 2 Wi-Fi + 3G (GSM)]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[K95AP|iPad 2 Wi-Fi + 3G (CDMA]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[K93AAP|iPad 2 Wi-Fi (Mid 2012)]]
  +
| {{n/a}}
  +
| {{n/a}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[J1AP|iPad (3rd generation) Wi-Fi]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[J2AP|iPad (3rd generation) Wi-Fi + Cellular (VZ)]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[J2AAP|iPad (3rd generation) Wi-Fi + Cellular]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[N18AP|iPod touch (3rd generation)]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|-
  +
! scope="row" | [[N81AP|iPod touch (4th generation)]]
  +
| {{no}}
  +
| {{yes}}
  +
| {{n/a}}
  +
| {{no}}
  +
| {{n/a}}
  +
| {{yes}}
  +
| {{n/a}}
  +
|}
   
 
[[Category:Hacking Software]]
  
[[Category:Hacking Software]]
 
[[Category:Jailbreaks]]
  
[[Category:Jailbreaks]]
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[[Category:Jailbreaking]]

Latest revision as of 13:30, 8 December 2021

Absinthe Version 2.0.4 on Windows

Absinthe is the A5 userland jailbreak tool for iPhone 4S and iPad 2 on iOS 5.0 (iPhone 4S only) and 5.0.1. This tool was released on 20 January 2012, and is available in three incarnations:

Newer versions (2.0 - 2.0.4) supported all devices from iOS 5.0.1 and 5.1.1. This preinstalled Rocky Racoon from Cydia to untether.

The name Absinthe was chosen as an homage to greenpois0n, Chronic Dev Team's earlier jailbreak software. Absinthe is an alcoholic beverage that is often greenish in color and is poisonous in quantity.

Installation

The jailbreak packs Corona for the S5L8940 and the rest of the firmware patches in a regular iTunes backup and then restores this backup on to the device, which injects the required files. It is then completed by opening a web clip added to the home screen by Absinthe. If this doesn't work, for example, because the greenpois0n website is down due to the number of people attempting to jailbreak, an alternative is to enable a specially crafted VPN connection in the Settings app.

Exploit

Main article: Corona
Main article: Rocky Racoon

This jailbreak uses the Racoon String Format Overflow Exploit and HFS Heap Overflow from Corona for untether. The exact exploit to jailbreak the two devices is not known yet, but it is assumed that the web clip loads a page that requires an IPsec VPN connection, which causes the racoon daemon to start and run the jailbreak payload.

However, some poking reveals some unique means of injection. At some point in the jailbreak process, BackupAgent is intentionally crashed to produce a crash log. The jailbreak payload reads this crash log in order to obtain the memory address of libcopyfile.dylib to continue with the exploit.

Opening the webclip_Info.plist file included with the GUI tool, which is the definition file for the web clip, an URL to the greenpois0n website[dead] is found, which shows a please wait message. The interesting part is the source code of this page has an image linked to http://127.0.0.1/trigger.png, because 127.0.0.1 was designated as the trigger site for a VPN on-demand configuration and any attempt at accessing a resource on 127.0.0.1 will trigger the VPN. Note that there is no actual web server running on localhost.

Compatibility

5.0 (9A334) 5.0.1 (9A406) 5.0.1 (9A405) 5.1 (9B179) 5.1 (9A405) 5.1.1 (9B206) 5.1.1 (9B208)
iPhone 3GS No Yes N/A No N/A Yes N/A
iPhone 4 (GSM) No Yes N/A No N/A Yes Yes
iPhone 4 (CDMA) No Yes N/A No N/A Yes N/A
iPhone 4S Yes Yes Yes No No Yes N/A
iPad No Yes N/A No N/A Yes N/A
iPad 2 Wi-Fi No Yes N/A No N/A Yes N/A
iPad 2 Wi-Fi + 3G (GSM) No Yes N/A No N/A Yes N/A
iPad 2 Wi-Fi + 3G (CDMA No Yes N/A No N/A Yes N/A
iPad 2 Wi-Fi (Mid 2012) N/A N/A N/A No N/A Yes N/A
iPad (3rd generation) Wi-Fi No Yes N/A No N/A Yes N/A
iPad (3rd generation) Wi-Fi + Cellular (VZ) No Yes N/A No N/A Yes N/A
iPad (3rd generation) Wi-Fi + Cellular No Yes N/A No N/A Yes N/A
iPod touch (3rd generation) No Yes N/A No N/A Yes N/A
iPod touch (4th generation) No Yes N/A No N/A Yes N/A
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