81 lines
2.8 KiB
Elixir
81 lines
2.8 KiB
Elixir
# Debug script to trace crypto operations
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# Run with: cd /home/ra/odinsea-elixir && elixir test/debug_crypto.exs
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Code.require_file("lib/odinsea/util/bit_tools.ex", ".")
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Code.require_file("lib/odinsea/net/cipher/ig_cipher.ex", ".")
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Code.require_file("lib/odinsea/net/cipher/aes_cipher.ex", ".")
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Code.require_file("lib/odinsea/net/cipher/shanda_cipher.ex", ".")
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alias Odinsea.Net.Cipher.{IGCipher, AESCipher, ShandaCipher}
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alias Odinsea.Util.BitTools
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import Bitwise
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IO.puts("=== Debugging Crypto ===\n")
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# From the packet log:
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# Server's recv_iv = <<0xA8, 0xBC, 0x0D, 0xB3>> (client's send_iv)
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recv_iv = <<0xA8, 0xBC, 0x0D, 0xB3>>
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# First encrypted packet from client:
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# [Data] 7C A8 7B A8 BF 0A CD DE C7 71 AC
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packet = <<0x7C, 0xA8, 0x7B, 0xA8, 0xBF, 0x0A, 0xCD, 0xDE, 0xC7, 0x71, 0xAC>>
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IO.puts("Raw packet: #{Base.encode16(packet)}")
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IO.puts("Server recv_iv: #{Base.encode16(recv_iv)}")
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# Extract header
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<<raw_seq::little-16, raw_len::little-16, payload::binary>> = packet
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IO.puts("\nHeader:")
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IO.puts(" raw_seq: 0x#{Integer.to_string(raw_seq, 16)} (#{raw_seq})")
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IO.puts(" raw_len: 0x#{Integer.to_string(raw_len, 16)} (#{raw_len})")
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IO.puts(" payload: #{Base.encode16(payload)} (#{byte_size(payload)} bytes)")
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# Validate header
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<<_r0, _r1, r2, r3>> = recv_iv
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enc_version = 112
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seq_base = ((r2 &&& 0xFF) ||| ((r3 <<< 8) &&& 0xFF00)) &&& 0xFFFF
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calculated_version = Bitwise.bxor(raw_seq &&& 0xFFFF, seq_base)
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IO.puts("\nHeader validation:")
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IO.puts(" r2: 0x#{Integer.to_string(r2, 16)} (#{r2})")
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IO.puts(" r3: 0x#{Integer.to_string(r3, 16)} (#{r3})")
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IO.puts(" seq_base: 0x#{Integer.to_string(seq_base, 16)} (#{seq_base})")
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IO.puts(" calculated_version: #{calculated_version}")
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IO.puts(" expected_version: #{enc_version}")
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IO.puts(" valid: #{calculated_version == enc_version}")
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# Get packet length
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packet_len = Bitwise.bxor(raw_seq, raw_len) &&& 0xFFFF
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IO.puts("\nPacket length: #{packet_len}")
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# Decrypt with AES
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IO.puts("\n=== AES Decryption ===")
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aes_decrypted = AESCipher.crypt(payload, recv_iv)
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IO.puts("After AES: #{Base.encode16(aes_decrypted)}")
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# Decrypt with Shanda
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IO.puts("\n=== Shanda Decryption ===")
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shanda_decrypted = ShandaCipher.decrypt(aes_decrypted)
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IO.puts("After Shanda: #{Base.encode16(shanda_decrypted)}")
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# Expected opcode 0x01 = 1
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if byte_size(shanda_decrypted) >= 2 do
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<<opcode::little-16, rest::binary>> = shanda_decrypted
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IO.puts("\n=== Result ===")
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IO.puts("Opcode: 0x#{Integer.to_string(opcode, 16)} (#{opcode})")
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IO.puts("Rest: #{Base.encode16(rest)}")
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if opcode == 1 do
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IO.puts("\n✓ SUCCESS! This is CP_PermissionRequest (0x01)")
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else
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IO.puts("\n✗ FAILED! Expected opcode 0x01, got 0x#{Integer.to_string(opcode, 16)}")
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end
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end
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# Update IV
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new_recv_iv = IGCipher.inno_hash(recv_iv)
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IO.puts("\nUpdated recv_iv: #{Base.encode16(new_recv_iv)}")
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IO.puts("\n=== Done ===")
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