Category PS4 CFW and Hacks       Thread starter PSXHAX       Start date May 2, 2019 at 5:47 AM       11,067       31            
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Following fail0verflow's PS4 Crashdumps / Kernel Dumping and PS4 Aux Hax Documentation alongside his recent PS4 Sflash0 Pack Tool, PlayStation 4 developer @SocraticBliss made available a PS4 Crash Dump Decryptor Python Script for scene devs on Twitter today.

Download: ps4_crash_dump_decryptor.py / ps4_mono_to_il.py (PS4 MONO binaries to IL MONO binaries - updated script to work with the PS4's .dll.sprx and .exe.sprx files to turn them into .dll and .exe to be inspected with something like dnSpy)

From the Tweets below, here's what he had to say on it: "Still tweaking this somewhat, but decided to take a swing at fail0verflow's PS4 Crash Dump Decryptor script (since at this point its fairly outdated), enjoy!

Thanks goes out to notzecoxao, CelesteBlue123, and most of all fail0verflow! :)"

ps4_crash_dump_decryptor.py
Code:
#!/usr/bin/env python
'''

Crash Dump Decryptor by SocraticBliss (R)

Thanks to...
# Team FailOverflow
# CelesteBlue
# zecoxao

1) Replace  AES KEY # with the actual key
2) Replace HMAC KEY # with the actual key
3) Have orbiscore-systemcrash.orbisstate in the same directory
4) python ps4_crash_dump_decryptor.py

'''

from binascii import unhexlify as uhx, hexlify as hx
from Crypto.Cipher import AES
from Crypto.Hash import HMAC, SHA256
import struct
import sys

class Header:
    def __init__(self, f):
        __slots__ = ('VERSION', 'OPEN_PSID', 'PADDING_1', 'PADDING_2',
                     'UNKNOWN', 'STATE', 'DATA_LEN', 'PADDING_3', 'DATA_HMAC')

        # Secure Header
        self.VERSION   = struct.unpack('<I', f.read(4))[0]
        self.PSID_ENC  = struct.unpack('<16s', f.read(16))[0]
        self.PADDING_1 = struct.unpack('<I13Q', f.read(108))[0]
   
        # Padding
        self.PADDING_2 = struct.unpack('<4Q', f.read(32))[0]
   
        # Final Header
        self.UNKNOWN   = struct.unpack('<2Q', f.read(16))[0]
        self.STATE     = struct.unpack('<Q', f.read(8))[0]
        self.DATA_LEN  = struct.unpack('<Q', f.read(8))[0]
        self.PADDING_3 = struct.unpack('<2Q', f.read(16))[0]
        self.DATA_HMAC = struct.unpack('<4Q', f.read(32))[0]

KEYS = [
    ['',''],
    ['AES KEY 1','HMAC KEY 1'], # 1.01
    ['AES KEY 2','HMAC KEY 2'], # 3.55
    ['AES KEY 3','HMAC KEY 3'], # 4.05
    ['AES KEY 4','HMAC KEY 4'], # 4.07
]

def aes_ecb_encrypt(key, data):
    return AES.new(uhx(key), AES.MODE_ECB).encrypt(data)

def aes_ecb_decrypt(key, data):
    return AES.new(uhx(key), AES.MODE_ECB).decrypt(data)

def hmac_sha256(key, data):
    return HMAC.new(uhx(key), msg = data, digestmod = SHA256).digest()

# PROGRAM START
def main (argc, argv):

    # 1) Read the Header
    with open('orbiscore-systemcrash.orbisstate', 'rb') as f:
        ps = Header(f)
   
        KD = KEYS[ps.VERSION][0]
        KC = KEYS[ps.VERSION][1]
        print('\nEncrypted PSID: %s' % hx(ps.PSID_ENC).upper())
   
        PSID_DEC = aes_ecb_decrypt(KD, ps.PSID_ENC)
        print('\nPSID: %s' % hx(PSID_DEC).upper())
        
        # HMAC DIGEST
        DIGEST = hmac_sha256(KC, ps.PSID_ENC)
        print('HASH: %s' % hx(DIGEST).upper())
           
        KD = DIGEST[0x10:]
        KC = DIGEST[:0x10]
          
        print('\nAES : %s' % hx(KC).upper())
        print('HMAC: %s' % hx(KD).upper())
   
        # 2) Dump Starts Here
        f.seek(0x4000)
        DATA_ENC = f.read()

    # 3) Utilize the proper key set to decrypt the data
    IV = '0000000000000000'
    DATA = AES.new(KD, AES.MODE_CBC, IV).decrypt(DATA_ENC)

    # 4) Save the decrypted data
    with open('debug.bin', 'wb') as f:
        f.write(DATA)
   
    print('\nSaved to debug.bin')

if __name__=='__main__':
    sys.exit(main(len(sys.argv), sys.argv))
Crash Dump KeySeed
Code:
kd, kc
KEYS = [
    ['',''],
    [b'8F86DDEDCBF24A44EB6C30607AA26F76', b'4125715AAB8B78E569F512E65CA62DD3'], # 1.01-3.15
    [b'63AEF79DC49969FD8997B2F60DB65F81', b'1800A5DE2D0F0652FA5602FFADD440AA'], # 3.50-3.70
    [b'05205507B7A154E08A7A38B1897563FB', b'AD334D142EAF8B9438DB00D1D0BFF357'], # 4.00-4.05
    [b'04C1A0961BBB0CB2140361B0956AAABA', b'052D2FF3014FB38CAAF6898CB899982A'], # 4.06-4.07 (to test)
]
Sealed Key Values

Keyset 1

AES-CBC-128
Key = B5DAEFFF39E6D90ECA7DC5B029A8153E

SHA-256-HMAC
Hash = 8707960A53468D6C843B3DC9624E22AF

Keyset 2
AES-CBC-128
Key = EC0D347E2A7657471F1FC33E9E916FD4

SHA-256-HMAC
Hash = A6D6583D3217E87D9BE9BCFC4436BE4F

Keyset 3
AES-CBC-128
Key = 51D8BFB4E387FB4120F081FE33E4BE9A

SHA-256-HMAC
Hash = FFF9BDEA803B14824C61850EBB084EE9

Keyset 4
AES-CBC-128
Key = 346B5D231332AC428A44A708B1138F6D

SHA-256-HMAC
Hash = 5DC6B8D1A3A0741852A7D44268714824

Dumped with getSealedKeySecret on 5.05

PS4 Crash Dump Decryptor Python Script via SocraticBliss.jpg
 
:idea: Reminder: Those without a Verified Badge yet on Discord to access the private areas we recommend Joining Us! Why? The waiting process takes a week for new Members, and there's a lot we're unable to share on public forums including the latest PS4 PKG Games. 🏴‍☠️

Comments

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winch03200

Member
Contributor
Verified
thanks for the news
 
:idea: Reminder: Those without a Verified Badge yet on Discord to access the private areas we recommend Joining Us! Why? The waiting process takes a week for new Members, and there's a lot we're unable to share on public forums including the latest PS4 PKG Games. 🏴‍☠️
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