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*mUrDeRc0dE*
Joined: 16 Jun 2008
Posts: 13
Location: IDSTORAGE
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 Posted: Sat Sep 06, 2008 7:04 pm Post subject: Prx decryption kill me... |
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| Code: | #include <pspsdk.h>
#include <pspkernel.h>
#include <pspdebug.h>
#include <pspiofilemgr.h>
#include <string.h>
#include "pspDecrypt.h"
#define printf pspDebugScreenPrintf
/* Define the module info section */
PSP_MODULE_INFO("template", 0, 1, 1);
/* Define the main thread's attribute value (optional) */
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER | THREAD_ATTR_VFPU);
PSP_HEAP_SIZE_KB(1000*1024);
int PspUnpack(u8* inBuf, u8* outBuf)
{
int prx_com,prx_upk,prx_dec;
char buf[200*1024];
char c_buf[128*1024];
if(!(prx_com = sceIoOpen("ms0:/PRX/testprx.prx", PSP_O_RDONLY, 0777))) {
printf("Cannot open the source prx\n");
}
if(!(prx_upk = sceIoOpen("ms0:/PRX/testprx_upk.prx", PSP_O_WRONLY|PSP_O_CREAT, 0777))) {
printf("Cannot create the unpacked prx\n");
}
int mod = pspSdkLoadStartModule("pspdecrypt.prx", PSP_MEMORY_PARTITION_KERNEL);
if (mod < 0)
{
printf("Cannot load pspdecrypt module");
}
printf("Prx decompression phase 1 - Bytecopyng\n");
int prxsize = sceIoRead(prx_com,buf,1000000000);
int destsize = prxsize - 336;
sceIoLseek(prx_com,0x150, PSP_SEEK_SET);
sceIoRead(prx_com,buf,1000000000);
memset(&buf,0,sizeof(buf));
printf("Prx size = %ikb(%ib)\n",prxsize / 1024,prxsize);
int decPrxSize = pspDecompress((u8*)buf,(u8*)c_buf,sizeof(c_buf));
sceIoWrite(prx_upk,c_buf,decPrxSize);
sceIoClose(prx_com);
sceIoClose(prx_upk);
sceKernelDelayThread(10000000);
sceKernelExitGame();
return 0;
}
int main(int argc, char *argv[])
{
pspDebugScreenInit();
pspDebugScreenPrintf("Prx unpacker & decrypter\nCode : Murderc0de\n\n");
PspUnpack(10,10);
return 0;
}
#include <pspsdk.h>
#include <pspkernel.h>
#include <pspdebug.h>
#include <pspiofilemgr.h>
#include <string.h>
#include "pspDecrypt.h"
#define printf pspDebugScreenPrintf
/* Define the module info section */
PSP_MODULE_INFO("template", 0, 1, 1);
/* Define the main thread's attribute value (optional) */
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER | THREAD_ATTR_VFPU);
PSP_HEAP_SIZE_KB(1000*1024);
int PspUnpack(u8* inBuf, u8* outBuf)
{
int prx_com,prx_upk,prx_dec;
char buf[200*1024];
char c_buf[128*1024];
if(!(prx_com = sceIoOpen("ms0:/PRX/testprx.prx", PSP_O_RDONLY, 0777))) {
printf("Cannot open the source prx\n");
}
if(!(prx_upk = sceIoOpen("ms0:/PRX/testprx_upk.prx", PSP_O_WRONLY|PSP_O_CREAT, 0777))) {
printf("Cannot create the unpacked prx\n");
}
int mod = pspSdkLoadStartModule("pspdecrypt.prx", PSP_MEMORY_PARTITION_KERNEL);
if (mod < 0)
{
printf("Cannot load pspdecrypt module");
}
printf("Prx decompression phase 1 - Bytecopyng\n");
int prxsize = sceIoRead(prx_com,buf,1000000000);
int destsize = prxsize - 336;
sceIoLseek(prx_com,0x150, PSP_SEEK_SET);
sceIoRead(prx_com,buf,1000000000);
memset(&buf,0,sizeof(buf));
printf("Prx size = %ikb(%ib)\n",prxsize / 1024,prxsize);
int decPrxSize = pspDecompress((u8*)buf,(u8*)c_buf,sizeof(c_buf));
sceIoWrite(prx_upk,c_buf,decPrxSize);
sceIoClose(prx_com);
sceIoClose(prx_upk);
sceKernelDelayThread(10000000);
sceKernelExitGame();
return 0;
}
int main(int argc, char *argv[])
{
pspDebugScreenInit();
pspDebugScreenPrintf("Prx unpacker & decrypter\nCode : Murderc0de\n\n");
PspUnpack(10,10);
return 0;
}
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i used this code for unpacking prx (delete bytes above 0x150) and then decompress the prx with pspDecompress function, but the psp crashes. I tryed to use static u8* buffers but the psp crashes. I tryed the zlib but the psp crashes...
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Source code is for noobs... |
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homemister
Joined: 24 Mar 2008
Posts: 25
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| Posted: Sat Sep 06, 2008 7:31 pm Post subject: |
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| Quote: | | PSP_HEAP_SIZE_KB(1000*1024); |
Your heep size is too big
try PSP_HEAP_SIZE_KB(10*1024);
That is 10Mb, you had 1Gb |
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*mUrDeRc0dE*
Joined: 16 Jun 2008
Posts: 13
Location: IDSTORAGE
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| Posted: Sat Sep 06, 2008 8:51 pm Post subject: |
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no, the heap isn't the problem...the psp crash
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Source code is for noobs... |
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Pirata Nervo
Joined: 09 Oct 2007
Posts: 409
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| Posted: Sat Sep 06, 2008 8:59 pm Post subject: |
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why is the code posted 2 times? or do you really have that in your source code??
by the way, setting the heap to 1gb...is not a problem? :P
and i dont agree with you when you say source code is for noobs, we all learn from reading source codes not only from reading books.
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Upgrade your PSP |
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ne0h
Joined: 21 Feb 2008
Posts: 386
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| Posted: Sat Sep 06, 2008 9:29 pm Post subject: |
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| I've never studied a programming language to school, but I've try to learn C with the online tutorial and read a source code can halp you to understand some things, so I don't think that source code is for noobs! |
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FreePlay
Joined: 04 Jan 2006
Posts: 71
Location: Schenectady, New York, USA
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| Posted: Sun Sep 07, 2008 2:29 am Post subject: |
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| *mUrDeRc0dE* wrote: | | no, the heap isn't the problem...the psp crash |
Yes, the heap IS the problem. You're requesting 1024000 *KB* of space. |
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Actarus
Joined: 19 May 2008
Posts: 33
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| Posted: Sun Sep 07, 2008 2:32 am Post subject: |
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Where is the module pspdecrypt.prx?
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Sam PSP Emulator
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