82 lines
4.8 KiB
Markdown
82 lines
4.8 KiB
Markdown
CipherScan
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==========
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A very simple way to find out which SSL ciphersuites are supported by a target.
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On Linux x86_64 run: ./cipherscan www.google.com:443
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On any other *nix or *tux run: ./cipherscan -o /path/to/openssl www.google.com:443
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and watch.
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The newer your version of openssl, the better results you'll get. Versions
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of OpenSSL below 1.0.1 don't support TLS1.2 ciphers, elliptic curves, etc... Build your own or test what your system's OpenSSL supports.
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Cipherscan should work fine on Linux, Mac OS X, Solaris, Illumos, SmartOS, OpenIndiana if you specify a an openssl binary with -o.
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Build OpenSSL with ChaCha20-Poly1305 support (Optional)
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-------------------------------------------------------
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The OpenSSL binary in this repository is built for 64bit Linux. If you wish to build a version with the same features for your own platform, [the snapshot from the OpenSSL gitweb view](http://git.openssl.org/gitweb/?p=openssl.git;a=tree;h=161b23361778c155f9c174694b1db2506a2e0b52;hb=9a8646510b) and build it like this:
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```
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./config no-shared
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make
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```
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And get the binary from `app/openssl`. (`./config` will ask you to run `make depend` which will fail - for our purposes this step is not required)
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Options
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-------
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```
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-a | --allciphers Test all known ciphers individually at the end.
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-b | --benchmark Activate benchmark mode.
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-d | --delay Pause for n seconds between connections
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-D | --debug Output ALL the information.
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-h | --help Shows this help text.
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-j | --json Output results in JSON format.
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-o | --openssl path/to/your/openssl binary you want to use.
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-v | --verbose Increase verbosity.
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```
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Example
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-------
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Testing plain SSL/TLS:
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```
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linux $ ./cipherscan www.google.com:443
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...................
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prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize
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1 ECDHE-RSA-CHACHA20-POLY1305 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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2 ECDHE-RSA-AES128-GCM-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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3 ECDHE-RSA-AES128-SHA TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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4 ECDHE-RSA-RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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5 AES128-GCM-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
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6 AES128-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
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7 AES128-SHA TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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8 RC4-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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9 RC4-MD5 SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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10 ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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11 ECDHE-RSA-AES256-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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12 ECDHE-RSA-AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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13 AES256-GCM-SHA384 TLSv1.2 2048 sha1WithRSAEncryption True
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14 AES256-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True
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15 AES256-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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16 ECDHE-RSA-DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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17 DES-CBC3-SHA SSLv3,TLSv1,TLSv1.1,TLSv1.2 2048 sha1WithRSAEncryption True
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18 ECDHE-RSA-AES128-SHA256 TLSv1.2 2048 sha1WithRSAEncryption True ECDH,P-256,256bits
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```
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Testing STARTTLS:
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```
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darwin $ ./cipherscan -o ./openssl-mine -starttls xmpp jabber.ccc.de:5222
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.........
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prio ciphersuite protocols pubkey_size signature_algorithm trusted pfs_keysize
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1 DHE-RSA-AES256-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
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2 AES256-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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3 EDH-RSA-DES-CBC3-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
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4 DES-CBC3-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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5 DHE-RSA-AES128-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False DH,1024bits
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6 AES128-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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7 RC4-SHA SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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8 RC4-MD5 SSLv3,TLSv1 2048 sha1WithRSAEncryption False
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```
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