HYBRID LET'S GOOO

This commit is contained in:
CTurt 2020-06-29 19:03:35 +01:00
parent 7192bb2469
commit 7f8a425808
13 changed files with 241 additions and 3 deletions

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@ -0,0 +1,19 @@
echo "Building payload"
ee-gcc -Ttext=0x01FFF800 payload.c -o payload.elf -nostartfiles -nostdlib -ffreestanding -Os -Wl,-z,max-page-size=0x1 # 2048
ee-objcopy -O binary payload.elf payload.bin -Wl,-z,max-page-size=0x1
ENTRY=`ee-objdump -t payload.elf | grep " _start"`
echo $ENTRY
# Doesn't seem to work on MinGW toolchain, so set manually if you're using that:
#ENTRY=0x`grep -o "^\S*" <<< $ENTRY`
ENTRY=0x01fff9a8
echo $ENTRY
echo "Building crt0"
ee-gcc -Ttext=0x01500014 -DENTRY=$ENTRY crt0.S -o fullpayload.elf -nostartfiles -nostdlib -ffreestanding -Wl,-z,max-page-size=0x1
ee-objcopy -O binary fullpayload.elf fullpayload.bin -Wl,-z,max-page-size=0x1
echo "Done. Insert fullpayload.bin into VIDEO_TS.IFO at offset 0x2954"

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@ -0,0 +1,65 @@
# OK, so in the hybrid disc, 3.10 stage 2 is at 0x3000 as normal, but 3.11 stage 2 is modified to start at 0x38000
# that's why we need to modify this file, just the LBA load on line 31 and the padding
.set noreorder # If we're writing assembly, why would we want this?
.section .text.startup
.equ getBufferInternal, 0x2986a0
.equ payload, (0x2000000 - 0x800) # End of RAM
.global _start
_start:
#la $a0, 0x7f
#la $v1, 0x01
#syscall 0x01 # ResetEE
#la $a0, relo
la $a0, load
la $a1, 0
la $a2, 0
la $a3, 0
.global ExecPS2
ExecPS2:
la $v1, 7
syscall 7 # ExecPS2
load:
la $a0, 0
la $a1, 0 # 0 = VIDEO_TS.IFO, 1 = VTS_01_0.IFO
la $a2, 0x3800 / 0x800 # lba offset in file
la $a3, payload # Destination
la $t0, 0x800 / 0x800 # Count
la $t1, 0
la $v0, getBufferInternal
jalr $v0
nop
#relo:
# Relocate payload to end of RAM
# la $a0, (0x2000000 - 1024)
# la $a1, payload
# la $a2, 2048
# la $v0, memcpy
# jalr $v0
boot:
la $v1, 0x64; la $a0, 0; syscall 0x64 # FlushCache data writeback
la $v1, 0x64; la $a0, 2; syscall 0x64 # FlushCache instruction invalidate
# Point stack to end of scratchpad RAM
la $sp, 0x70004000
# Execute from relocated place
la $v0, ENTRY
j $v0
nop
#.space (_start + 0x2fe2 - 0x2954) - .
#fpIndex:
# .byte 0xfa
# .byte 0xdc
#.space (_start + 0x3000 - 0x2954) - .
#.incbin "payload.bin"

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@ -0,0 +1,141 @@
#include <stddef.h>
// Pick one
#define LOAD_FROM_VTS_02_0_IFO
//#define LOAD_FROM_SECTOR_RELATIVE_TO_VIDEO_TS_IFO (151 - 138 - 7)
#define min(a, b) (((a) < (b)) ? (a) : (b))
#define pointToIFO ((void (*)(unsigned int index, unsigned int lba, unsigned int offset))0x258a28)
#define getDiscData ((void (*)(unsigned int s, void *d))0x258b98)
#define SifIopReset ((int (*)(char *, int))0x20e7d8)
#define SifIopSync ((int (*)(void))0x20e958)
#define SifInitRpc ((void (*)(int))0x208d80)
#define SifExitRpc ((void (*)(void))0x208f20)
#define getBufferInternal ((int (*)(void *filename, int type, int currentSector, void *dest, unsigned int sectorsRemaining, int curReadPos))0x2952f0)
#define ELF_PT_LOAD 1
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef struct {
u8 ident[16];
u16 type;
u16 machine;
u32 version;
u32 entry;
u32 phoff;
u32 shoff;
u32 flags;
u16 ehsize;
u16 phentsize;
u16 phnum;
u16 shentsize;
u16 shnum;
u16 shstrndx;
} elf_header_t;
typedef struct {
u32 type;
u32 offset;
void *vaddr;
u32 paddr;
u32 filesz;
u32 memsz;
u32 flags;
u32 align;
} elf_pheader_t;
__attribute__((noreturn)) void ExecPS2(void *entry, void *gp, int argc, char **argv) {
asm volatile("la $v1, 7; syscall 7");
//__builtin_unreachable();
}
void *memcpy_(void *dest, void *src, size_t n) {
int i;
for(i = 0; i < n; i++) ((unsigned char *)dest)[i] = ((unsigned char *)src)[i];
return dest;
}
void *memset(void *dest, int c, size_t n) {
int i;
for(i = 0; i < n; i++) ((unsigned char *)dest)[i] = c;
return dest;
}
static void readData(void *dest, unsigned int offset, size_t n) {
unsigned char buffer[0x800];
unsigned int copied = 0;
#define remaining (n - copied)
if(offset % 0x800) {
getBufferInternal("", 1, offset / 0x800, buffer, 1, 0);
memcpy_(dest, buffer + offset % 0x800, min(0x800 - (offset % 0x800), n));
copied += min(0x800 - (offset % 0x800), n);
}
if(remaining >= 0x800) {
getBufferInternal("", 1, (offset + copied) / 0x800, dest + copied, remaining / 0x800, 0);
copied += (remaining / 0x800) * 0x800;
}
if(remaining > 0) {
getBufferInternal("", 1, (offset + copied) / 0x800, buffer, 1, 0);
memcpy_(dest + copied, buffer, remaining);
}
}
__attribute__((noreturn)) void _start(void) {
//Exit(0);
//asm volatile("la $v1, 0x04; la $a0, 0; syscall 0x04");
int i;
#ifdef LOAD_FROM_VTS_02_0_IFO
// point to VTS_02_0.IFO
pointToIFO(2, 0, 0);
// Force a read from VTS_02_0.IFO
char head[64];
getDiscData(64, &head);
#define RELATIVE_SECTOR 0
#else
#define RELATIVE_SECTOR LOAD_FROM_SECTOR_RELATIVE_TO_VIDEO_TS_IFO
#endif
// Based on https://github.com/AKuHAK/uLaunchELF/blob/master/loader/loader.c
elf_header_t eh;
readData(&eh, RELATIVE_SECTOR * 0x800, sizeof(elf_header_t));
elf_pheader_t eph[eh.phnum];
readData(&eph, RELATIVE_SECTOR * 0x800 + eh.phoff, sizeof(elf_pheader_t) * eh.phnum);
for (i = 0; i < eh.phnum; i++) {
if (eph[i].type != ELF_PT_LOAD)
continue;
readData(eph[i].vaddr, RELATIVE_SECTOR * 0x800 + eph[i].offset, eph[i].filesz);
if(eph[i].memsz > eph[i].filesz) memset(eph[i].vaddr + eph[i].filesz, 0, eph[i].memsz - eph[i].filesz);
}
asm volatile("la $v1, 0x64; la $a0, 0; syscall 0x64"); // FlushCache data writeback
asm volatile("la $v1, 0x64; la $a0, 2; syscall 0x64"); // FlushCache instruction invalidate
//while(!SifIopReset("", 0));
//while(!SifIopSync());
//while(!SifIopReset("rom0:UDNL rom0:EELOADCNF", 0));
SifIopReset("rom0:UDNL rom0:EELOADCNF", 0);
while(!SifIopSync());
SifInitRpc(0);
SifExitRpc();
ExecPS2((void *)eh.entry, 0, 0, 0);
}

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@ -14,6 +14,8 @@ Currently only support:
- 3.10 (E or U - maybe other regions too, untested - with English language set in settings) - confirmed working on hardware by CTurt, and others
- 3.11 (all regions - EUMACDGJ - with English language set in settings) - confirmed working on hardware by [MrMario2011](https://twitter.com/MrMario2011/status/1277586569738813440), and others
UPDATE: Experimental hybrid ISO - 3.10 and 3.11 support merged into one now available, burn `PREBUILT ISOs/hybrid 3.10 and 3.11.iso` and set language to English :)
Please don't bother trying on a not supported firmware/language configuration, it won't work...
Language is also confirmed to [affect the exploit](https://www.youtube.com/watch?v=zelVQcD7HCY), so please set your PS2 language in the system configuration to match supported configuration (it should be possible to port to other languages in the future, but I'm prioritising different firmware versions instead of different lanauges to start with, since language can be changed).
@ -27,12 +29,12 @@ You should use DVD-R (others work but put more strain on PS2 laser), and make su
If you intend to make your own image containing additional homebrew / modified initial loader, please read on. Step 1 is the same, first identify firmware version.
### Step 2: Copy your homebrew
Once you've identified your console's DVD Player version, copy all of the homebrew you would like to include on the disc into that directory (EG: `3.10EU/`).
Once you've identified your console's DVD Player version, copy all of the homebrew you would like to include on the disc into that directory in the `Filesystem` (EG: `Filesystem/3.10EU/`).
### Step 3: Make an image
Once you've placed all the homebrew files you'd like into the directory, generate a UDF image of the directory. The easiest way is probably to install `genisoimage` (comes pre-installed on many Linux distributions like Ubuntu) / `mkisofs` and run the following (where `exploit.iso` is the output and `3.10EU` is the directory containing `VIDEO_TS` and any homebrew):
genisoimage -udf -o exploit.iso 3.10EU
genisoimage -udf -o exploit.iso Filesystem/3.10EU
### Step 4: Test and burn
I would recommend you test in PCSX2 first, but since [PCSX2 doesn't support loading the DVD Player](https://github.com/PCSX2/pcsx2/issues/1981), you have to decrypt and repack it yourself, which is beyond the scope of this README. With that said, if you aren't touching anything in `VIDEO_TS`, there shouldn't really be any reason for the exploit to fail.

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@ -54,7 +54,7 @@ Insert fullpayload.bin into VIDEO_TS.IFO at offset 0x2ba4
test, and see ule boot successfully in pcsx2!
3.11E (English language)
3.11 all (English language)
getDiscData and getDiscByte seem the same as in 3.11J
overflow call is also at 0x257564
fpIndex also 0x143bc4a
@ -68,3 +68,14 @@ now break at writing payload (0x1500014)
currentDiscBytePointer points to 0x014ff57d
nearest landmark is "ABOVE 3" string at 0x14ff41b
so payload goes at ABOVE 3 location in IFO + (0x014ff57d - 0x14ff41b) - 1 = 0x2954
hybrid 3.10 + 3.11
so starting with a 3.11 base VIDEO_TS.IFO
currentDiscBytePointer offset for 3.10 is 00002744
for 3.11 is 0000277c
copy 3.10 currentDiscBytePointer and endDiscBytePointer corruption to its offset (8 bytes at 00002744)
fpIndex for 3.10 is offset 00002faa, so copy those 2 bytes over
payload for 3.10 is at 0x2bb4