Update readme wrt ja3/ja4 + imotr tweaks

etc/client-simulation.wiresharked.md

@@ -12,18 +12,19 @@ testssl.sh uses the file `client-simulation.txt`. Previously we queried the SSLl
 * Look for the ClientHello which matches the source IP + destination you had in mind. Check the destination hostname in the SNI extension so that you can be sure it's the right traffic.
 * Edit `client-simulation.wiresharked.txt` and insert a new section, preferably by copying a previous version of the client.
 * Edit the *names* accordingly and the *short* description. The latter must not contain blanks.
-* Retrieve *handshakebytes* by marking the *TLS 1.x Record Layer* --> Copy --> As a hex stream.
+* Retrieve *handshakebytes* by marking the *TLS 1.x Record Layer* in wireshark --> Copy --> As a hex stream.
 * For *ch_ciphers*: mark *Cipher Suites* --> Copy --> As a hex stream and supply it to `~/utils/hexstream2cipher.sh`. The last line contains the ciphers which you need to copy. For consistency reasons it is preferred you remove the TLS 1.3 ciphers before which start with TLS\*. . The GREASE "ciphers" (?a?a) which you may see in the very beginning don't show up here.
-* *ciphersuites* are TLS 1.3 ciphersuites which you omitted previously. You can identify them as they currently are normallky like 0x13\*\*. Retrieve them from above see `~/utils/hexstream2cipher.sh`. As said, they start with TLS\*.
+* *ciphersuites* are TLS 1.3 ciphersuites which you omitted previously. You can identify them as they currently are normally like 0x13\*\*. Retrieve them from above see `~/utils/hexstream2cipher.sh`. As said, they start with TLS\*.
 * For *curves* mark the *Supported Groups* TLS extension --> Copy --> As a hex stream, remove any leading GREASE ciphers (?a?a) and supply it to `~/utils/hexstream2curves.sh`. Copy the last line into *curves*.
 * Figure out *protos* and *tlsvers* by looking at the *supported_versions* TLS extension (43=0x002b). May work only with recent clients. Be careful as some do not list all TLS versions here (OpenSSL 1.1.1 listed only TLS 1.2/1.3).
 * Adjust *lowest_protocol* and *highest_protocol* accordingly (0301=TLS 1.0, 0302=TLS 1.1, 0303=TLS 1.2, 0304=TLS 1.3)
-* Review TLS extension 13 (=0x000d) "signature_algorithm" whether any SHA1 signature algorithm is listed. If not *requiresSha2* is true.
+* Review TLS extension "signature_algorithm" 13 (=0x000d)  whether any SHA1 signature algorithm is listed. If not *requiresSha2* is true.
 * Leave *maxDhBits*/*minDhBits* and *minRsaBits*/*maxRsaBit* at -1, unless you know for sure what the client can handle.
 * Retrieve *alpn* by looking at the *application_layer_protocol_negotiation* TLS extension 16 (=0x0010).
-* When using wireshark, copy also the ja3 and ja4 values accordingly (copy --> value), see e.g. like *java_80442*.  This could be used in the future.
+* Figure out the *services* by applying a good piece of human logic. Or have a look at a different version of the client. Any (modern) browser is probably "HTTP", OpenSSL or Java "ANY" whereas mail clients as Thunderbird support a variety of protocols.
-* Figure out the *services* by applying a good piece of human logic. Or have a look at a different version of the client. Any (modern) browser is probably "HTTP", OpenSSL or Java "ANY"  whereas mail clients as Thunderbird support a variety of protocols.
+* For ja3 and ja4: This is to uniquely identify the client handshake. Also we can consolidate client handshake section (see e.g. Android 13 = Android 14).  Retrieve *ja3* or *ja4* by using Copy --> value.
 * When you're done copy your inserted section from `client-simulation.wiresharked.txt` into `client-simulation.txt`.
 * Before submitting a PR: test it yourself! You can also watch it again via wireshark.
 
 
+The license of self harvested client simulations is the same as the whole tool see ../LICENSE .