PL3 est un projet visant le PSFreedom sur d'autres firmware que le 3.41 .
Il c'est donc acheté une PS3 en occasion v3.01 .
Au bout de 4 jours il réussi à dumper le LV2, il est actuellement en train de l'examiner.
Tous ce qui reste à faire pour lui c'est de chercher et de trouver les offsets à modifier pour qu'il soi compatible avec le PSFreedom, en effet ce n'est qu'une question de temps avant qu'il y parvienne !
Ensuite il se plongera au portage pour les version 3.10 ainsi que la 3.15, pour cela il faudra également modifier les offsets.
Pour ce qui est technique concernant l'exploit , vous pouvez lire son logue (en Anglais) que voici :
Hi,
I’ll announce two things, first, let’s talk about PL3.. PL3 is a new project I started in order to have a common repository of payloads that can be used by any ‘jailbreak’ implementation. I got tired of copying payloads from PSGroove, and I had some nice changes in mine that I thought the PSGroove project could benefit from, so I thought I’d create a single repository that both projects, PSFreedom and PSGroove (or any other similar projects) could use.
You can find it in github, so don’t hesitate to submodule it and use it.
Second important news… I’ve bought a new PS3 just for homebrew. Thanks to all who donated money so I can buy it (I didn’t get enough donations to pay for it, but enough to help me). I bought this PS3 used and it came with firmware 3.01! This is good and bad news : I can’t use PSFreedom to jailbreak it, so i’ve put on hold any improvements for it, however, it will allow me to actually port PSFreedom to older firmwares! My plan is to get the jailbreak working on 3.01, then move on to 3.10 and 3.15 (depending on how hard it is, i might skip 3.10).
Another good news is that after 4 days of work, I was finally able to dump the LV2 memory from the 3.01 firmware, and now all that remains is to find the right offsets to patch, and port PSFreedom to 3.01, so all those who are still using this firmware version, you will soon be able to jailbreak it! Once I’m done with that, I’ll try to do the same with the 3.10/3.15 firmware versions!
To dump LV2, I used a trick and algorithms found by marcan42, so big thanks goes to him, as well as many other people who helped me out, RichDevX and Aaron in particular. I used RichDevX’s idea of ignoring the JIG and bruteforcing the address in which the port1 descriptor gets stored until I get a hit, then use that payload to dump lv2, then find the right JIG offset for that particular firmware from the dump. Marcan’s trick was to send the data through the ethernet cable by using LV1 only hypercalls, and it worked!
Now the latest git version of PL3 has a new ‘dump_lv2′ payload which you can use, it is firmware independent, and only uses LV1 hypercalls, so it should just work… It will dump all the lv2 memory through ethernet, so fire up wireshark, save the dump to a .pcap file, and use the tool in PL3/tools to extract the memory dump from the .pcap file.
In other news, I will soon upload to Ps3utils an .idc script that will search and find the syscall table, and correctly resolve all of its functions and name them properly.. maybe even have it automatically find all functions of a dump in order to save time creating procs in IDA. I’ll let you know once I’m done with it.
KaKaRoTo
Source : http://www.ps3-addict.fr/forum/viewtopic.php?t=679Site Officiel : http://kakaroto.homelinux.net/2010/09/ps3-introducing-pl3-and-3-01-firmware-news/
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