Editing SPU Isolated Modules Reverse Engineering

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*<span style="text-decoration: line-through;">http://git.fail0verflow.com/?p=anergistic.git</span>
*<span style="text-decoration: line-through;">http://git.fail0verflow.com/?p=anergistic.git</span>


=== Usage ===
=== usage ===


anergistic can be launched in two different modes, one that '''only emulates''' (runs) the program through the SPU and the the other that lets you '''debug''' the process through gdb  
anergistic can be launched in two different modes, one that '''only emulates''' (runs) the program through the SPU and the the other that lets you '''debug''' the process through gdb  
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==== only emulate ====
==== only emulate ====


{{keyboard|content=<syntaxhighlight lang="bash">./anergistic spu_elf_name.elf</syntaxhighlight>}}
{{keyboard|content=./anergistic spu_elf_name.elf}}


this mode runs an elf with all the parameters and actions defined on main.c, channel.c a
this mode runs an elf with all the parameters and actions defined on main.c, channel.c a


==== debug ====
==== debug ====
terminal 1
terminal 1
{{keyboard|content=<syntaxhighlight lang="bash">./anergistic -g1234 spu_elf_name.elf</syntaxhighlight>}}
{{keyboard|content=./anergistic -g1234 spu_elf_name.elf}}


simulate debug server in the local host on port 1234
simulate debug server in the local host on port 1234


terminal 2
terminal 2
{{keyboard|content=<syntaxhighlight lang="bash">
{{keyboard|content=spu-gdb spu_elf_name.elf  
spu-gdb spu_elf_name.elf  
(gdb)target remote :1234}}
(gdb)target remote :1234
</syntaxhighlight>}}


connect to the local host on port 1234
connect to the local host on port 1234
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=== Customizations ===
=== Customizations ===


See example below.
see example below


'''Running in aim_spu_module anergistic'''  
'''Running in aim_spu_module anergistic'''  
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=== Problems ===
=== Problems ===


==== Connection problem ====
====Connection proble====
 
when in debugger mode
when in debugger mode
<pre>
<pre>
Line 62: Line 59:
recv failed: Success
recv failed: Success
</pre>
</pre>
====Solution====
use spu-gdb


==== Solution ====
=== Tools ===
 
[http://pastie.org/2810870 gnuify_ida.pl]
Use spu-gdb.
 
=== Tools ===
 
[http://pastie.org/2810870 gnuify_ida.pl][http://paste.ubuntu.com/25615421/ mirror]


Use this to convert IDA disassembly into a format suitable for GNU AS. Literals in IDA are unsigned while AS expects signed literals. Conversion of literals is a work in progress.
Use this to convert IDA disassembly into a format suitable for GNU AS. Literals in IDA are unsigned while AS expects signed literals. Conversion of literals is a work in progress.
== Loading Isolated Modules in GameOS ==
This code kinda represents how GameOS applications load and execute isolated SPU SELFs. For example: psp emulator.
<source lang="C">
  sys_spu_initialize(1,1);
  syscall(230, sys_spu_t *id,img &iso_spuSCEself,void *arg,0,0,0); //sys_isolated_spu_create
  sys_ppu_thread_create(sys_ppu_thread_t *thread_id,void* iso_spu_handler,sys_spu_t *id, 0x64, 0x1000, 2,"iso_spu_handler");
  syscall(233, sys_spu_t *id,2,0,sys_interrupt_tag_t intrtag);  //sys_iso_spu_create_interrupt_tag
  sys_interrupt_thread_establish(sys_interrupt_thread_handle_t *ih,sys_interrupt_tag_t intrtag,sys_ppu_thread_t t_id,
  sys_spu_t id,0);
  syscall(234, sys_spu_t *id,2,7); //sys_iso_spu_set_int_mask
  syscall(232, sys_spu_t *id);    //sys_iso_spu_start
  ...
  iso_spu_handler(...) {
  syscall(237, sys_spu_t id,2,void *out1);  // sys_iso_spu_get_int_stat
  syscall(240, void *out2, out1);          // sys_iso_spu_mmio_read / sys_isolated_spu_read_puint_mb ?
  syscall(236, sys_spu_t id,2, out1)        // sys_iso_spu_set_int_stat
  sys_interrupt_thread_eoi()
  }
</source>


== aim_spu_module ==
== aim_spu_module ==
It is used to retrieve the device type, device id, open psid and the pscode from the EID0 data that is passed in.


It is used to retrieve the device type, Device Id, OpenPSID and the PsCode from the EID0 data that is passed in.


=== Debug messages ===
=== Debug messages ===
{| class="wikitable"
{| class="wikitable"
! colspan="2" | Address !! rowspan="2" | Message
! colspan="2" | Address !! rowspan="2" | Message
Line 115: Line 85:
| 0x3790 || 0x3610 || "(spu) PU DMA area size is not equall to AIM_DMA_SIZE\n"
| 0x3790 || 0x3610 || "(spu) PU DMA area size is not equall to AIM_DMA_SIZE\n"
|}
|}
This messages are DMAed to the ppu if a debug output address is specified.


These messages are sent via DMA to the PPU if a debug output address is specified.


=== Data ===
=== Data ===
{| class="wikitable"
{| class="wikitable"
! colspan="2" | Address !! rowspan="2" | Message
! colspan="2" | Address !! rowspan="2" | Message
Line 125: Line 94:
! ?&nbsp;3.41&nbsp;? !! 355&nbsp;CEX
! ?&nbsp;3.41&nbsp;? !! 355&nbsp;CEX
|-
|-
| 0x37e0 || - || Reference Tool fallback IDPS
| 0x37e0 || - || Reference tool fallback IDPS
|-
|-
| 0x37f0 - ... || 0x3650 - ... || Start of [[Keys#aim_spu_module_Keys|aim_spu_module keys]]
| 0x37f0 - ... || 0x3650 - ... || Start of AIM keys [[Keys#aim_keys]]
|-
|-
| 0x3ac0 || 0x3870 || AES sbox (16*16 bytes)
| 0x3ac0 || 0x3870 || AES sbox (16*16 bytes)
Line 133: Line 102:
| 0x3c70 || 0x3a20 || AES inverse sbox (16*16 bytes)
| 0x3c70 || 0x3a20 || AES inverse sbox (16*16 bytes)
|}
|}


=== Functions ===
=== Functions ===
{| class="wikitable"
{| class="wikitable"
! colspan="2" | Address !! rowspan="2" | Name !! rowspan="2" | Parameters !! rowspan="2" | Info
! colspan="2" | Address !! rowspan="2" | Name !! rowspan="2" | Parameters !! rowspan="2" | Info
Line 171: Line 140:
| 0x3168 ||  || write_tag_mask_bit || mask_bit:$4 || Used to set a specific bit in MFC_WrTagMask.
| 0x3168 ||  || write_tag_mask_bit || mask_bit:$4 || Used to set a specific bit in MFC_WrTagMask.
|}
|}


==== Disasm ====
==== Disasm ====
The complete disassembly is available at [http://pastebin.com/7vArGweJ].


The complete disassembly is available at [http://pastebin.com/7vArGweJ].


== Decrypting EID ==
==Decrypting EID==


=== Dumper iso.self ===
=== Dumper iso.self ===
Is there one ?


=== Dumper Payload ===
=== Dumper Payload ===
* <span style="text-decoration: line-through;">http://pastie.org/pastes/2101977</span>
* http://paste.ubuntu.com/25615310/


* [https://web.archive.org/web/20150912102728/http://pastie.org/pastes/2101977 Dumper payload code]
=== Running in aim_spu_module anergistic ===
* [http://paste.ubuntu.com/25615310/ mirror]
//Partial code modified to run aim_spu_module
 
* <span style="text-decoration: line-through;">http://pastie.org/2000330 [http://www.ps3devwiki.com/files/devtools/anergistic/#2000330-Pastie.txt]</span>
=== Running aim_spu_module in anergistic ===
* http://paste.ubuntu.com/25615344/
 
* [https://web.archive.org/web/20150912053633/http://pastie.org/2000330 Partial code modified to run aim_spu_module]
* [http://paste.ubuntu.com/25615344/ mirror]


== isoldr ==
== isoldr ==
loads, decrypts, runs isolated modules, and creates through aes the required key in LS 0x0


Loads, decrypts, runs isolated modules, and creates through AES the required key in LS 0x0.


=== Debug messages ===
=== Debug messages ===
 
This module doesnt contain debug messages
This module doesn't contain debug messages.


=== Data ===
=== Data ===
{| class="wikitable"
{| class="wikitable"
! colspan="2" | Address !! rowspan="2" | Message
! colspan="2" | Address !! rowspan="2" | Message
Line 216: Line 181:


=== Functions ===
=== Functions ===
{| class="wikitable"
{| class="wikitable"
! colspan="2" | Address !! rowspan="2" | Name !! rowspan="2" | Parameters !! rowspan="2" | Info
! colspan="2" | Address !! rowspan="2" | Name !! rowspan="2" | Parameters !! rowspan="2" | Info
Line 271: Line 235:
|}
|}


* [https://web.archive.org/web/20141118195818/http://pastie.org/2774207 REed functions names from FW 3.41 isoldr] (offsets relative to segment start).
from isoldr 3.41 iirc -> http://pastie.org/2774207 //offsets relative to segment start
* [http://paste.ubuntu.com/25615363/ mirror]




{{Reverse engineering}}<noinclude>[[Category:Main]]</noinclude>
{{Reverse engineering}}<noinclude>[[Category:Main]]</noinclude>
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