ssl - 解密 Wireshark 中的 HTTPS 流量不起作用

Question

我在 Windows Server 2008 R2 上运行 Wireshark 1.8.6 并尝试解密传入的 HTTPS 通信以调试我遇到的问题。

我的 RSA key 列表设置正确(我认为)，但 Wireshark 出于某种原因不会解密 SSL 流量。我过去在调试与其他客户端系统的交换时已经使它起作用所以我想知道它是否与这里使用的 TLS 有关(即我读过如果使用 Diffie-Hellman 则无法解密但我可以'告诉是否那是正在使用的)。

我的 RSA key 列表条目如下:

IP Address: 192.168.1.27 (the IP address of the server)
Port: 7447
Protocol: http
Key File: set to my .pem (which I created using openssl from a .pfx containing both the public and private key).
Password: blank because it doesn't seem to need it for a .pem (Wireshark actually throws an error if I enter one).

在我的 Wireshark 跟踪中，我可以看到 Client Hello 和 Server Hello，但应用程序数据未被解密(右键单击 -> Follow SSL Stream 显示任何内容)。

我的 SSL 日志粘贴在下面——这里是否有我遗漏的东西可以告诉我解密失败的原因？我看到一些这样的条目让我很担心，但我不确定如何解释它们:

packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
dissect_ssl3_handshake iteration 1 type 16 offset 5 length 258 bytes, remaining 267 
ssl_decrypt_pre_master_secret key exchange 0 different from KEX_RSA (16)
dissect_ssl3_handshake can't decrypt pre master secret
  record: offset = 267, reported_length_remaining = 59

SSL 日志:

ssl_association_remove removing TCP 7447 - http handle 00000000041057D0
Private key imported: KeyID 02:bb:83:4f:80:cf:39:59:39:cd:74:ab:b4:4b:c7:20:...
ssl_load_key: swapping p and q parameters and recomputing u
ssl_init IPv4 addr '192.168.1.27' (192.168.1.27) port '7447' filename 'C:\Users\username\Desktop\Certs\server_cert.pem.pem' password(only for p12 file) ''
ssl_init private key file C:\Users\username\Desktop\Certs\server_cert.pem.pem successfully loaded.
association_add TCP port 7447 protocol http handle 00000000041057D0

dissect_ssl enter frame #2968 (first time)
ssl_session_init: initializing ptr 0000000006005E40 size 680
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 123
dissect_ssl3_record: content_type 22 Handshake
decrypt_ssl3_record: app_data len 118, ssl state 0x00
association_find: TCP port 59050 found 0000000000000000
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
dissect_ssl3_handshake iteration 1 type 1 offset 5 length 114 bytes, remaining 123 
packet_from_server: is from server - FALSE
ssl_find_private_key server 192.168.1.27:7447
dissect_ssl3_hnd_hello_common found CLIENT RANDOM -> state 0x01

dissect_ssl enter frame #2971 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 326
dissect_ssl3_record found version 0x0301(TLS 1.0) -> state 0x11
dissect_ssl3_record: content_type 22 Handshake
decrypt_ssl3_record: app_data len 262, ssl state 0x11
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
dissect_ssl3_handshake iteration 1 type 16 offset 5 length 258 bytes, remaining 267 
ssl_decrypt_pre_master_secret key exchange 0 different from KEX_RSA (16)
dissect_ssl3_handshake can't decrypt pre master secret
  record: offset = 267, reported_length_remaining = 59
dissect_ssl3_record: content_type 20 Change Cipher Spec
dissect_ssl3_change_cipher_spec
packet_from_server: is from server - FALSE
ssl_change_cipher CLIENT
  record: offset = 273, reported_length_remaining = 53
dissect_ssl3_record: content_type 22 Handshake
decrypt_ssl3_record: app_data len 48, ssl state 0x11
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
dissect_ssl3_handshake iteration 1 type 166 offset 278 length 4253081 bytes, remaining 326 

dissect_ssl enter frame #2972 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 59
dissect_ssl3_record: content_type 20 Change Cipher Spec
dissect_ssl3_change_cipher_spec
packet_from_server: is from server - TRUE
ssl_change_cipher SERVER
  record: offset = 6, reported_length_remaining = 53
dissect_ssl3_record: content_type 22 Handshake
decrypt_ssl3_record: app_data len 48, ssl state 0x11
packet_from_server: is from server - TRUE
decrypt_ssl3_record: using server decoder
decrypt_ssl3_record: no decoder available
dissect_ssl3_handshake iteration 1 type 8 offset 11 length 5212462 bytes, remaining 59 

dissect_ssl enter frame #2973 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 277
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 272, ssl state 0x11
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
association_find: TCP port 59050 found 0000000000000000
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #2990 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 53
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 48, ssl state 0x11
packet_from_server: is from server - TRUE
decrypt_ssl3_record: using server decoder
decrypt_ssl3_record: no decoder available
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #2991 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 1380
  need_desegmentation: offset = 0, reported_length_remaining = 1380

dissect_ssl enter frame #2999 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 8565
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 8560, ssl state 0x11
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
association_find: TCP port 59050 found 0000000000000000
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #3805 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 389
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 384, ssl state 0x11
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
association_find: TCP port 59050 found 0000000000000000
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #3807 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 53
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 48, ssl state 0x11
packet_from_server: is from server - TRUE
decrypt_ssl3_record: using server decoder
decrypt_ssl3_record: no decoder available
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #3808 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 1380
  need_desegmentation: offset = 0, reported_length_remaining = 1380

dissect_ssl enter frame #3815 (first time)
  conversation = 00000000060056C0, ssl_session = 0000000006005E40
  record: offset = 0, reported_length_remaining = 8469
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 8464, ssl state 0x11
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
association_find: TCP port 59050 found 0000000000000000
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #2968 (already visited)
  conversation = 00000000060056C0, ssl_session = 0000000000000000
  record: offset = 0, reported_length_remaining = 123
dissect_ssl3_record: content_type 22 Handshake
dissect_ssl3_handshake iteration 1 type 1 offset 5 length 114 bytes, remaining 123 

dissect_ssl enter frame #2971 (already visited)
  conversation = 00000000060056C0, ssl_session = 0000000000000000
  record: offset = 0, reported_length_remaining = 326
dissect_ssl3_record: content_type 22 Handshake
dissect_ssl3_handshake iteration 1 type 16 offset 5 length 258 bytes, remaining 267 
  record: offset = 267, reported_length_remaining = 59
dissect_ssl3_record: content_type 20 Change Cipher Spec
dissect_ssl3_change_cipher_spec
  record: offset = 273, reported_length_remaining = 53
dissect_ssl3_record: content_type 22 Handshake
dissect_ssl3_handshake iteration 1 type 166 offset 278 length 4253081 bytes, remaining 326 

dissect_ssl enter frame #2973 (already visited)
  conversation = 00000000060056C0, ssl_session = 0000000000000000
  record: offset = 0, reported_length_remaining = 277
dissect_ssl3_record: content_type 23 Application Data
association_find: TCP port 59050 found 0000000000000000
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #2999 (already visited)
  conversation = 00000000060056C0, ssl_session = 0000000000000000
  record: offset = 0, reported_length_remaining = 8565
dissect_ssl3_record: content_type 23 Application Data
association_find: TCP port 59050 found 0000000000000000
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #3805 (already visited)
  conversation = 00000000060056C0, ssl_session = 0000000000000000
  record: offset = 0, reported_length_remaining = 389
dissect_ssl3_record: content_type 23 Application Data
association_find: TCP port 59050 found 0000000000000000
association_find: TCP port 7447 found 0000000004FCF520

dissect_ssl enter frame #2968 (already visited)
  conversation = 00000000060056C0, ssl_session = 0000000000000000
  record: offset = 0, reported_length_remaining = 123
dissect_ssl3_record: content_type 22 Handshake
dissect_ssl3_handshake iteration 1 type 1 offset 5 length 114 bytes, remaining 123 

dissect_ssl enter frame #2968 (already visited)
  conversation = 00000000060056C0, ssl_session = 0000000000000000
  record: offset = 0, reported_length_remaining = 123
dissect_ssl3_record: content_type 22 Handshake
dissect_ssl3_handshake iteration 1 type 1 offset 5 length 114 bytes, remaining 123 

Answer 1

ssl_decrypt_pre_master_secret key exchange 0 different from KEX_RSA (16)

看起来您正在使用 DHE 密码套件(至少不是带有 RSA key 交换的密码套件)，它将提供Perfect Forward Secrecy 并防止这些数据包被解密，即使你有私钥。

您可能感兴趣:

• > This Security.SE question
• > SSL/TLS & Perfect Forward Secrecy by Vincent Bernat

如果这是为了调试，请尝试关闭 DHE 密码套件。

您应该能够通过查看 Wireshark 中的 Server Hello 数据包来了解您正在使用的密码套件。

---

较新的版本也可以直接使用预主 key (阅读 Wireshark wiki SSL page 的“使用 (Pre)-Master-Secret”部分)。在某些情况下，这也是您可以从客户端获得的东西。无论哪种方式，要使其发挥作用，您都需要从两方中的一方获得预主 key 。以下是 Wireshark wiki 该部分的几个链接:

• > Ask.Wireshark: Follow SSL stream using Master-key and Session-ID
• > Security.SE: Decrypting TLS in Wireshark when using DHE_RSA ciphersuites