I bet nobody knows the answer to this question, not even fanjita probbably..

[agent_dark64]

Anyone know how to load a ELF file in IDA without it comming up with that stupid "Unsupported or unknown image type" error? Seams the elf/sony prx files have protection against reverse engineering in ida.

I bet anything this thread gets unanswered which is one reason the mods here should give me access to developers dungon forum which i can't post in.

[iball®]

Why don't you DEVELOP something to gain access to it?

[Soulphalanx]

maybe because its an unsupported format that it doesnt work

[agent_dark64]

Originally Posted by iball®

Why don't you DEVELOP something to gain access to it?

I don't have time unlike most people here, but that doesn't make me a noob coder. In fact i reverse engineer for a hobby, i have in this time looked brefly at the 2.6 decrpyted firmware, especially loadcore.prx. I am however developing something right now, but it'll take awhile though.

[will1234]

freeplay knows i tried to get in contact with him about it but pm wasnt working

[agent_dark64]

Originally Posted by iball®

Why don't you DEVELOP something to gain access to it?

hehe, here some source code for them, maybe i'll go publish this:

#include <pspkernel.h>
#include <pspdebug.h>

int main()
{
pspDebugScreenInit();
pspDebugScreenPrintf("let me in developers dungon, see i can code!");
return 0;
}

[Soulphalanx]

lol, thats just changing text from hello world example
what he means by develop is make an app or game that shows you can code

[soccerPMN]

I think he was trying to make a joke about how the front page will have news stories about programs that are so basic, like 'color change demos' and whatnot.

[iball®]

[sarcasm]

10 Print "Blow me"
20 goto 10

Ooooo! I can code too! Can I have access to the developer's dungeon now?

[/sarcasm]

[Nevada]

Originally Posted by agent_dark64

I don't have time unlike most people here, but that doesn't make me a noob coder. In fact i reverse engineer for a hobby, i have in this time looked brefly at the 2.6 decrpyted firmware, especially loadcore.prx. I am however developing something right now, but it'll take awhile though.

If you really did you'd know how to use IDA properly
Hint, what platform is the PSP ? :|

[Maniakc]

Originally Posted by iball®

[sarcasm]

10 Print "Blow me"
20 goto 10

Ooooo! I can code too! Can I have access to the developer's dungeon now?

[/sarcasm]

What would we do without Iball®?

[_00_]

Originally Posted by agent_dark64

Anyone know how to load a ELF file in IDA without it comming up with that stupid "Unsupported or unknown image type" error? Seams the elf/sony prx files have protection against reverse engineering in ida.

I bet anything this thread gets unanswered which is one reason the mods here should give me access to developers dungon forum which i can't post in.

And 'Set' processor to 'mipsl' when openning. Or you may try to use Hitmen's Allegrex module (http://hitmen.c02.at/html/psp_releases.html)

[mannymix03]

btw developers dont only hang out in the dungeon, if you post the question anywhere they will still answer it

[agent_dark64]

Originally Posted by Fluff

If you really did you'd know how to use IDA properly
Hint, what platform is the PSP ? :|

MIPS R4000 Chipset. ELF executable format, Little endian 32 bit processor - happy?

Double Post Merge

Originally Posted by _00_

And 'Set' processor to 'mipsl' when openning. Or you may try to use Hitmen's Allegrex module (http://hitmen.c02.at/html/psp_releases.html)

I set it to mipsl when opening, i'v even tried mipsl5900 since mipsl doesn't cover some r4000 instructions. It still gives a "unsupported or unknown image type" when loading. Its something about the elf file, not the instruction set because i can load homebrew elfs, just not elfs or decrypted prxs by sony.

[_00_]

Originally Posted by agent_dark64

Its something about the elf file, not the instruction set because i can load homebrew elfs, just not elfs or decrypted prxs by sony.

You have to convert them using PRXTOOL (-e):

Usage: prxtool [options...] file
Options:
-o outfile : Output file. If not specified uses stdout
-c         : Output an IDC file (default)
-x         : Output an XML file
-p         : Output a PRX/PFX (from an ELF)
-e         : Output an ELF (from a PRX)
-d         : Enable debug mode
-s ixrsl   : Specify what to serialize (Imports,Exports,Relocs,Sections,SyslibExp)
-n imp.xml : Specify a XML file containing the nid tables
-t         : Emit stub files for the XML file passed on the command line
-u         : Emit stub files based on the exports of the specified prx files
-k         : Emit new style stubs for the SDK
-q         : Print PRX dependencies. (Should have loaded an XML file to be useful
-m         : Print the module and library information to screen
-f         : Print the imports and exports of a prx

Example 1: prxtool -o output.idc -s xr myfile.prx
Outputs an IDC to output.idc, only serializing Exports and Relocs
Example 2: prxtool -c psplibdoc.xml
Outputs one or more stub .S files to the current directory from the XML file

Download here: http://ps2dev.org/psp/Tools/PRXTool_Win32