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Added spaghetti to work around 7.20 packet handler

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Flawed
2025-03-24 22:45:50 -07:00
parent 34b0dc673e
commit 5c456a3a71
2 changed files with 65 additions and 7 deletions
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minor_patch_diff.py
+48 -5
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@@ -7,16 +7,50 @@ fucked_distance = 0xFFFFFFFF
max_size_diff = 10
def get_zone_proto_down_sig(exe_file: str):
def get_sem_ver(exe_file: str):
res = re.match(".*ffxiv_dx11\.(\d).(\d)(\d)(\w?)\.exe", exe_file)
sem_ver = f"{res.group(1)}.{res.group(2)}.{res.group(3)}"
if res.group(4) != "":
sem_ver = f"{sem_ver}+{res.group(4)}"
if semver.compare(sem_ver, "6.4.0") >= 0:
return sem_ver
def get_zone_proto_down_sig(sem_ver: str):
if semver.compare(sem_ver, "7.2.0") >= 0:
return "40 55 53 56 57 41 55 41 56 41 57 48 8D AC 24 ? ? ? ? B8 ? ? ? ? E8 ? ? ? ? 48 2B E0 48 8B 05 ? ? ? ? 48 33 C4 48 89 85 ? ? ? ? 45 0F B7 78 ?"
# return "E8 ? ? ? ? 41 83 C7 9A EB 1B"
elif semver.compare(sem_ver, "6.4.0") >= 0:
return "40 53 56 48 81 EC ? ? ? ? 48 8B 05 ? ? ? ? 48 33 C4 48 89 44 24 ? 8B F2"
else:
return "48 89 ? 24 ? ? 48 83 EC 50 8B F2 49 8B"
def get_opcode_offset_sig(sem_ver: str):
if semver.compare(sem_ver, "7.2.0") >= 0:
return "E8 ? ? ? ? 41 83 C7 9A EB 1B"
elif semver.compare(sem_ver, "6.4.0") >= 0:
return "40 53 56 48 81 EC ? ? ? ? 48 8B 05 ? ? ? ? 48 33 C4 48 89 44 24 ? 8B F2"
else:
return "48 89 ? 24 ? ? 48 83 EC 50 8B F2 49 8B"
def get_opcode_offset_7_20(r2):
orig_loc = r2.cmd("s") # Save original spot
r2.cmd("aei") # Initialize ESIL VM
r2.cmd("aeim") # Initialize ESIL VM stack
r2.cmd("aeip") # Initialize ESIL VM IP to curseek
r2.cmd("aeso") # step over call
r2.cmd("aer r15=0x500") # set r15 to some arbitrary number
r2.cmd("aeso") # step
regs = r2.cmdj("arj")
opcode_offset = 0x500 - regs["r15"]
# Clear the ESIL environment
r2.cmd("ar0")
r2.cmd("aeim-")
r2.cmd("aei-")
r2.cmd(f"s {orig_loc}") # Seek back to original spot
return opcode_offset
def get_opcode_offset(r2):
orig_loc = r2.cmd("s") # Save original spot
@@ -105,10 +139,10 @@ def extract_opcode_data(exe_file):
sync_r2_output(r2)
p = create_r2_byte_pattern(get_zone_proto_down_sig(exe_file))
sem_ver = get_sem_ver(exe_file)
p = create_r2_byte_pattern(get_zone_proto_down_sig(sem_ver))
target = r2.cmd(f"/x {p}").split()[0] # Find byte pattern
packet_handler_ea = int(target, 16)
r2.cmd(f"s {target}") # Seek to target
## STEP 1: Grab switch cases
@@ -119,10 +153,19 @@ def extract_opcode_data(exe_file):
eprint(f" Loaded switch cases")
## STEP 2: Grab opcode offset
p = create_r2_byte_pattern(get_opcode_offset_sig(sem_ver))
opcode_offset_target = r2.cmd(f"/x {p}").split()[0] # Find byte pattern
packet_handler_ea = int(opcode_offset_target, 16)
r2.cmd(f"s {opcode_offset_target}") # Seek to target
opcode_offset = get_opcode_offset(r2)
if semver.compare(sem_ver, "7.2.0") >= 0:
opcode_offset = get_opcode_offset_7_20(r2)
else:
opcode_offset = get_opcode_offset(r2)
eprint(f" Found opcode offset: {opcode_offset}")
r2.cmd(f"s {target}") # Seek to original target
## STEP 3: Grab blocks from packet handler
blocks = r2.cmdj("afbj")