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by grief3r
Wed Aug 15, 2018 10:05 pm
Forum: Programming and Security
Topic: how to locate the "main method" of a PSP game?
Replies: 1
Views: 1198

how to locate the "main method" of a PSP game?

the entry point, or whatever you want to call it. I used to think it was 0x08800000. *FailFish*

it seems to be 08804000 for the game I'm using. But it also say there's a segment 0 and segment 1

segment 1 doesn't contain any code so what is it then, the heap?
by grief3r
Wed Aug 15, 2018 7:46 pm
Forum: Programming and Security
Topic: pspAR unrecognized opcodes
Replies: 0
Views: 786

pspAR unrecognized opcodes

given the source is quite old and many years have passed, and the PSP processor is potentially moded. What is a reference I can use to fully understand each opcode and it's associated instruction?
by grief3r
Tue Dec 26, 2017 12:58 am
Forum: Programming and Security
Topic: pspsdk question module to intercept write to memory
Replies: 0
Views: 605

pspsdk question module to intercept write to memory

breakpoints so to speak, say the game writes to some memory location and i want to build a prx that can output which instruction got executed and at what address
thanks in advance
by grief3r
Fri Jul 28, 2017 9:40 pm
Forum: Programming and Security
Topic: simplistic audio callback?
Replies: 0
Views: 1151

simplistic audio callback?

The following sample code crashes the device i believe the problem has something to do with filling the audio buffer tested on the latest firmware makes me wonder whether there is even memory already allocated for the audio buffer #include <pspkernel.h> #include <pspdebug.h> #include <pspaudiolib.h>...
by grief3r
Wed Aug 03, 2016 9:17 am
Forum: Programming and Security
Topic: any way to reverse vita kernel modules?
Replies: 7
Views: 2465

Re: any way to reverse vita kernel modules?

But wait there is work on psp2sdk api documentation which means someone somehow managed to reverse some of it?
by grief3r
Sun Jul 10, 2016 3:38 pm
Forum: Programming and Security
Topic: any way to reverse vita kernel modules?
Replies: 7
Views: 2465

any way to reverse vita kernel modules?

id like to at least be able to look at the asm code if possible
by grief3r
Sun May 29, 2016 5:13 pm
Forum: Programming and Security
Topic: Reference for VitaSDK?
Replies: 6
Views: 3142

Re: Reference for VitaSDK?

Where might I be able to find more info on vita syscalls? they use a NID table which is basically a random sha-1 of the kernel functions name, whenever a syscall occurs it references that nid and calls the appropriate function by looking it up on the table, this table is in kernel memory so you wou...
by grief3r
Mon May 23, 2016 12:05 am
Forum: Programming and Security
Topic: decrypting prx files?
Replies: 1
Views: 1923

decrypting prx files?

I know prx tool is a great utility for this, however it does not decrypt every type of prx files , im doing a bit of reversing of MGSPW you can see for yourself it has a few imported modules that this tool cannot decrypt the point is, how can i figure out how to decrypt this myself and if possible t...
by grief3r
Sat Feb 13, 2016 7:00 pm
Forum: Programming and Security
Topic: ODE on Ps4?
Replies: 2
Views: 2315

Re: ODE on Ps4?

how it is so easy to find vulnerabilities on the ps4 but the vita still remains relatively secure is beyond me
by grief3r
Sat Feb 13, 2016 6:59 pm
Forum: Programming and Security
Topic: how are libraries under USRDIR\modules\ handled?
Replies: 7
Views: 2589

Re: how are libraries under USRDIR\modules\ handled?

**** dude these libs seem to have tags unsupported by prxtool, what now?

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