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https://github.com/ValdikSS/GoodbyeDPI.git
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Add TLS ClientHello fake packet generator
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@ -67,6 +67,10 @@ Usage: goodbyedpi.exe [OPTION...]
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--fake-from-hex <value> Load fake packets for Fake Request Mode from HEX values (like 1234abcDEF).
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This option can be supplied multiple times, in this case each fake packet
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would be sent on every request in the command line argument order.
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--fake-with-sni <value> Generate fake packets for Fake Request Mode with given SNI domain name.
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The packets mimic Mozilla Firefox 130 TLS ClientHello packet
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(with random generated fake SessionID, key shares and ECH grease).
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Can be supplied multiple times for multiple fake packets.
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--fake-gen <value> Generate random-filled fake packets for Fake Request Mode, value of them
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(up to 30).
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--fake-resend <value> Send each fake packet value number of times.
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@ -57,6 +57,91 @@ static const unsigned char fake_https_request[] = {
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0x00, 0x00, 0x00, 0x00, 0x00
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};
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// Captured from Firefox 130.0.1
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static const unsigned char fake_clienthello_part0[] = { // 116 bytes
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// TLS 1.2 ClientHello header (DD for length placeholder)
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0x16, 0x03, 0x01, 0xDD, 0xDD, 0x01, 0x00, 0xDD, 0xDD, 0x03, 0x03,
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// Random bytes (AA for placeholder)
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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// Random Session ID
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0x20,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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// Cipher Suites
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0x00, 0x22, 0x13, 0x01, 0x13, 0x03, 0x13, 0x02, 0xC0, 0x2B, 0xC0, 0x2F, 0xCC, 0xA9, 0xCC, 0xA8,
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0xC0, 0x2C, 0xC0, 0x30, 0xC0, 0x0A, 0xC0, 0x09, 0xC0, 0x13, 0xC0, 0x14, 0x00, 0x9C, 0x00, 0x9D,
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0x00, 0x2F, 0x00, 0x35,
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// Compression Methods
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0x01, 0x00,
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// Extensions Length
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0xDD, 0xDD,
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};
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// SNI: 00 00 L1 L1 L2 L2 00 L3 L3 (sni)
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// L1 = L+5, L2 = L+3, L3 = L // 9 + L bytes
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static const unsigned char fake_clienthello_part1[] = { // 523 bytes
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// extended_master_secret
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0x00, 0x17, 0x00, 0x00,
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// renegotiation_info
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0xFF, 0x01, 0x00, 0x01, 0x00,
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// supported_groups
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0x00, 0x0A, 0x00, 0x0E,
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0x00, 0x0C, 0x00, 0x1D, 0x00, 0x17, 0x00, 0x18, 0x00, 0x19, 0x01, 0x00, 0x01, 0x01,
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// ex_point_formats
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0x00, 0x0B, 0x00, 0x02, 0x01, 0x00,
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// session_ticket
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0x00, 0x23, 0x00, 0x00,
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// ALPN
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0x00, 0x10, 0x00, 0x0E,
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0x00, 0x0C, 0x02, 0x68, 0x32, 0x08, 0x68, 0x74, 0x74, 0x70, 0x2F, 0x31, 0x2E, 0x31,
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// status_request
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0x00, 0x05, 0x00, 0x05, 0x01, 0x00, 0x00, 0x00, 0x00,
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// delegated_credentials
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0x00, 0x22, 0x00, 0x0A, 0x00, 0x08, 0x04, 0x03, 0x05, 0x03, 0x06, 0x03, 0x02, 0x03,
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// key_share
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0x00, 0x33, 0x00, 0x6B, 0x00, 0x69, 0x00, 0x1D, 0x00, 0x20,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0x00, 0x17, 0x00, 0x41, 0x04,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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// supported_versions
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0x00, 0x2B, 0x00, 0x05, 0x04, 0x03, 0x04, 0x03, 0x03,
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// signature_algorithms
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0x00, 0x0D, 0x00, 0x18, 0x00, 0x16, 0x04, 0x03, 0x05, 0x03, 0x06, 0x03, 0x08, 0x04, 0x08, 0x05,
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0x08, 0x06, 0x04, 0x01, 0x05, 0x01, 0x06, 0x01, 0x02, 0x03, 0x02, 0x01,
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// psk_key_exchange_modes
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0x00, 0x2D, 0x00, 0x02, 0x01, 0x01,
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// record_size_limit
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0x00, 0x1C, 0x00, 0x02, 0x40, 0x01,
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// encrypted_client_hello
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0xFE, 0x0D, 0x01, 0x19, 0x00, 0x00, 0x01, 0x00, 0x01, 0xAA, 0x00, 0x20,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0x00, 0xEF,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
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0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA
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};
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// JA4: t13d1715h2_5b57614c22b0_5c2c66f702b0
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// JA4_r: t13d1715h2_002f,0035,009c,009d,1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0017,001c,0022,0023,002b,002d,0033,fe0d,ff01_0403,0503,0603,0804,0805,0806,0401,0501,0601,0203,0201
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// JA3 Fullstring: 771,4865-4867-4866-49195-49199-52393-52392-49196-49200-49162-49161-49171-49172-156-157-47-53,0-23-65281-10-11-35-16-5-34-51-43-13-45-28-65037,29-23-24-25-256-257,0
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// JA3: b5001237acdf006056b409cc433726b0
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static int send_fake_data(const HANDLE w_filter,
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const PWINDIVERT_ADDRESS addr,
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const char *pkt,
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@ -311,3 +396,46 @@ int fake_load_random(unsigned int count, unsigned int maxsize) {
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}
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return 0;
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}
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void set_uint16be(unsigned char *buffer, int offset, int value) {
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buffer[offset] = (value >> 8) & 0xFF;
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buffer[offset + 1] = value & 0xFF;
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}
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int fake_load_from_sni(const char *domain_name) {
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if (!domain_name) {
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return 1; // just extra safeguard against NPE
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}
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// calculate sizes
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const int name_size = strlen(domain_name);
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const int part0_size = sizeof(fake_clienthello_part0);
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const int part1_size = sizeof(fake_clienthello_part1);
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const int sni_head_size = 9;
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const int packet_size = part0_size + part1_size + sni_head_size + name_size;
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// allocate memory
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unsigned char *packet = malloc(packet_size);
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// copy major parts of packet
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memcpy(packet, fake_clienthello_part0, part0_size);
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memcpy(&packet[part0_size + sni_head_size + name_size], fake_clienthello_part1, part1_size);
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// replace placeholders with random generated values
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unsigned int random = 0;
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for (int i = 0; i < packet_size; i++) {
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if (packet[i] == 0xAA) {
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rand_s(&random);
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packet[i] = random & 0xFF;
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}
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}
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// write size fields into packet
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set_uint16be(packet, 0x0003, packet_size - 5);
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set_uint16be(packet, 0x0007, packet_size - 9);
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set_uint16be(packet, 0x0072, packet_size - 116);
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// write SNI extension
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set_uint16be(packet, part0_size + 0, 0x0000);
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set_uint16be(packet, part0_size + 2, name_size + 5);
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set_uint16be(packet, part0_size + 4, name_size + 3);
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packet[part0_size + 6] = 0x00;
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set_uint16be(packet, part0_size + 7, name_size);
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memcpy(&packet[part0_size + sni_head_size], domain_name, name_size);
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// add packet to fakes
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return fake_add(packet, packet_size);
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}
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@ -19,4 +19,5 @@ int send_fake_https_request(const HANDLE w_filter,
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const BYTE set_seq
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);
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int fake_load_from_hex(const char *data);
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int fake_load_from_sni(const char *domain_name);
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int fake_load_random(unsigned int count, unsigned int maxsize);
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@ -189,6 +189,7 @@ static struct option long_options[] = {
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{"reverse-frag",no_argument, 0, '(' },
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{"max-payload", optional_argument, 0, '|' },
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{"fake-from-hex", required_argument, 0, 'u' },
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{"fake-with-sni", required_argument, 0, '}' },
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{"fake-gen", required_argument, 0, 'j' },
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{"fake-resend", required_argument, 0, 't' },
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{"debug-exit", optional_argument, 0, 'x' },
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@ -948,6 +949,11 @@ int main(int argc, char *argv[]) {
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printf("WARNING: bad fake HEX value %s\n", optarg);
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}
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break;
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case '}': // --fake-with-sni
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if (fake_load_from_sni(optarg)) {
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printf("WARNING: bad domain name for SNI: %s\n", optarg);
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}
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break;
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case 'j': // --fake-gen
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if (fake_load_random(atoub(optarg, "Fake generator parameter error!"), 200)) {
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puts("WARNING: fake generator has failed!");
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@ -1013,6 +1019,10 @@ int main(int argc, char *argv[]) {
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" --fake-from-hex <value> Load fake packets for Fake Request Mode from HEX values (like 1234abcDEF).\n"
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" This option can be supplied multiple times, in this case each fake packet\n"
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" would be sent on every request in the command line argument order.\n"
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" --fake-with-sni <value> Generate fake packets for Fake Request Mode with given SNI domain name.\n"
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" The packets mimic Mozilla Firefox 130 TLS ClientHello packet\n"
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" (with random generated fake SessionID, key shares and ECH grease).\n"
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" Can be supplied multiple times for multiple fake packets.\n"
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" --fake-gen <value> Generate random-filled fake packets for Fake Request Mode, value of them\n"
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" (up to 30).\n"
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" --fake-resend <value> Send each fake packet value number of times.\n"
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