zambyte.robbyzambito.me
Adversarial C2 Protocol Implemented in Zig
Add GPLv3
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LICENSE.md
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LICENSE.md
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# GNU GENERAL PUBLIC LICENSE
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Version 3, 29 June 2007
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Copyright (C) 2007 Free Software Foundation, Inc.
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<https://fsf.org/>
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Everyone is permitted to copy and distribute verbatim copies of this
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license document, but changing it is not allowed.
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## Preamble
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You may not impose any further restrictions on the exercise of the
460
+
rights granted or affirmed under this License. For example, you may
461
+
not impose a license fee, royalty, or other charge for exercise of
462
+
rights granted under this License, and you may not initiate litigation
463
+
(including a cross-claim or counterclaim in a lawsuit) alleging that
464
+
any patent claim is infringed by making, using, selling, offering for
465
+
sale, or importing the Program or any portion of it.
466
+
467
+
### 11. Patents.
468
+
469
+
A "contributor" is a copyright holder who authorizes use under this
470
+
License of the Program or a work on which the Program is based. The
471
+
work thus licensed is called the contributor's "contributor version".
472
+
473
+
A contributor's "essential patent claims" are all patent claims owned
474
+
or controlled by the contributor, whether already acquired or
475
+
hereafter acquired, that would be infringed by some manner, permitted
476
+
by this License, of making, using, or selling its contributor version,
477
+
but do not include claims that would be infringed only as a
478
+
consequence of further modification of the contributor version. For
479
+
purposes of this definition, "control" includes the right to grant
480
+
patent sublicenses in a manner consistent with the requirements of
481
+
this License.
482
+
483
+
Each contributor grants you a non-exclusive, worldwide, royalty-free
484
+
patent license under the contributor's essential patent claims, to
485
+
make, use, sell, offer for sale, import and otherwise run, modify and
486
+
propagate the contents of its contributor version.
487
+
488
+
In the following three paragraphs, a "patent license" is any express
489
+
agreement or commitment, however denominated, not to enforce a patent
490
+
(such as an express permission to practice a patent or covenant not to
491
+
sue for patent infringement). To "grant" such a patent license to a
492
+
party means to make such an agreement or commitment not to enforce a
493
+
patent against the party.
494
+
495
+
If you convey a covered work, knowingly relying on a patent license,
496
+
and the Corresponding Source of the work is not available for anyone
497
+
to copy, free of charge and under the terms of this License, through a
498
+
publicly available network server or other readily accessible means,
499
+
then you must either (1) cause the Corresponding Source to be so
500
+
available, or (2) arrange to deprive yourself of the benefit of the
501
+
patent license for this particular work, or (3) arrange, in a manner
502
+
consistent with the requirements of this License, to extend the patent
503
+
license to downstream recipients. "Knowingly relying" means you have
504
+
actual knowledge that, but for the patent license, your conveying the
505
+
covered work in a country, or your recipient's use of the covered work
506
+
in a country, would infringe one or more identifiable patents in that
507
+
country that you have reason to believe are valid.
508
+
509
+
If, pursuant to or in connection with a single transaction or
510
+
arrangement, you convey, or propagate by procuring conveyance of, a
511
+
covered work, and grant a patent license to some of the parties
512
+
receiving the covered work authorizing them to use, propagate, modify
513
+
or convey a specific copy of the covered work, then the patent license
514
+
you grant is automatically extended to all recipients of the covered
515
+
work and works based on it.
516
+
517
+
A patent license is "discriminatory" if it does not include within the
518
+
scope of its coverage, prohibits the exercise of, or is conditioned on
519
+
the non-exercise of one or more of the rights that are specifically
520
+
granted under this License. You may not convey a covered work if you
521
+
are a party to an arrangement with a third party that is in the
522
+
business of distributing software, under which you make payment to the
523
+
third party based on the extent of your activity of conveying the
524
+
work, and under which the third party grants, to any of the parties
525
+
who would receive the covered work from you, a discriminatory patent
526
+
license (a) in connection with copies of the covered work conveyed by
527
+
you (or copies made from those copies), or (b) primarily for and in
528
+
connection with specific products or compilations that contain the
529
+
covered work, unless you entered into that arrangement, or that patent
530
+
license was granted, prior to 28 March 2007.
531
+
532
+
Nothing in this License shall be construed as excluding or limiting
533
+
any implied license or other defenses to infringement that may
534
+
otherwise be available to you under applicable patent law.
535
+
536
+
### 12. No Surrender of Others' Freedom.
537
+
538
+
If conditions are imposed on you (whether by court order, agreement or
539
+
otherwise) that contradict the conditions of this License, they do not
540
+
excuse you from the conditions of this License. If you cannot convey a
541
+
covered work so as to satisfy simultaneously your obligations under
542
+
this License and any other pertinent obligations, then as a
543
+
consequence you may not convey it at all. For example, if you agree to
544
+
terms that obligate you to collect a royalty for further conveying
545
+
from those to whom you convey the Program, the only way you could
546
+
satisfy both those terms and this License would be to refrain entirely
547
+
from conveying the Program.
548
+
549
+
### 13. Use with the GNU Affero General Public License.
550
+
551
+
Notwithstanding any other provision of this License, you have
552
+
permission to link or combine any covered work with a work licensed
553
+
under version 3 of the GNU Affero General Public License into a single
554
+
combined work, and to convey the resulting work. The terms of this
555
+
License will continue to apply to the part which is the covered work,
556
+
but the special requirements of the GNU Affero General Public License,
557
+
section 13, concerning interaction through a network will apply to the
558
+
combination as such.
559
+
560
+
### 14. Revised Versions of this License.
561
+
562
+
The Free Software Foundation may publish revised and/or new versions
563
+
of the GNU General Public License from time to time. Such new versions
564
+
will be similar in spirit to the present version, but may differ in
565
+
detail to address new problems or concerns.
566
+
567
+
Each version is given a distinguishing version number. If the Program
568
+
specifies that a certain numbered version of the GNU General Public
569
+
License "or any later version" applies to it, you have the option of
570
+
following the terms and conditions either of that numbered version or
571
+
of any later version published by the Free Software Foundation. If the
572
+
Program does not specify a version number of the GNU General Public
573
+
License, you may choose any version ever published by the Free
574
+
Software Foundation.
575
+
576
+
If the Program specifies that a proxy can decide which future versions
577
+
of the GNU General Public License can be used, that proxy's public
578
+
statement of acceptance of a version permanently authorizes you to
579
+
choose that version for the Program.
580
+
581
+
Later license versions may give you additional or different
582
+
permissions. However, no additional obligations are imposed on any
583
+
author or copyright holder as a result of your choosing to follow a
584
+
later version.
585
+
586
+
### 15. Disclaimer of Warranty.
587
+
588
+
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
589
+
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
590
+
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
591
+
WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
592
+
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
593
+
A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
594
+
PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
595
+
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
596
+
CORRECTION.
597
+
598
+
### 16. Limitation of Liability.
599
+
600
+
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
601
+
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
602
+
CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
603
+
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
604
+
ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
605
+
NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
606
+
LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
607
+
TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
608
+
PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
609
+
610
+
### 17. Interpretation of Sections 15 and 16.
611
+
612
+
If the disclaimer of warranty and limitation of liability provided
613
+
above cannot be given local legal effect according to their terms,
614
+
reviewing courts shall apply local law that most closely approximates
615
+
an absolute waiver of all civil liability in connection with the
616
+
Program, unless a warranty or assumption of liability accompanies a
617
+
copy of the Program in return for a fee.
618
+
619
+
END OF TERMS AND CONDITIONS
620
+
621
+
## How to Apply These Terms to Your New Programs
622
+
623
+
If you develop a new program, and you want it to be of the greatest
624
+
possible use to the public, the best way to achieve this is to make it
625
+
free software which everyone can redistribute and change under these
626
+
terms.
627
+
628
+
To do so, attach the following notices to the program. It is safest to
629
+
attach them to the start of each source file to most effectively state
630
+
the exclusion of warranty; and each file should have at least the
631
+
"copyright" line and a pointer to where the full notice is found.
632
+
633
+
<one line to give the program's name and a brief idea of what it does.>
634
+
Copyright (C) <year> <name of author>
635
+
636
+
This program is free software: you can redistribute it and/or modify
637
+
it under the terms of the GNU General Public License as published by
638
+
the Free Software Foundation, either version 3 of the License, or
639
+
(at your option) any later version.
640
+
641
+
This program is distributed in the hope that it will be useful,
642
+
but WITHOUT ANY WARRANTY; without even the implied warranty of
643
+
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
644
+
GNU General Public License for more details.
645
+
646
+
You should have received a copy of the GNU General Public License
647
+
along with this program. If not, see <https://www.gnu.org/licenses/>.
648
+
649
+
Also add information on how to contact you by electronic and paper
650
+
mail.
651
+
652
+
If the program does terminal interaction, make it output a short
653
+
notice like this when it starts in an interactive mode:
654
+
655
+
<program> Copyright (C) <year> <name of author>
656
+
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657
+
This is free software, and you are welcome to redistribute it
658
+
under certain conditions; type `show c' for details.
659
+
660
+
The hypothetical commands \`show w' and \`show c' should show the
661
+
appropriate parts of the General Public License. Of course, your
662
+
program's commands might be different; for a GUI interface, you would
663
+
use an "about box".
664
+
665
+
You should also get your employer (if you work as a programmer) or
666
+
school, if any, to sign a "copyright disclaimer" for the program, if
667
+
necessary. For more information on this, and how to apply and follow
668
+
the GNU GPL, see <https://www.gnu.org/licenses/>.
669
+
670
+
The GNU General Public License does not permit incorporating your
671
+
program into proprietary programs. If your program is a subroutine
672
+
library, you may consider it more useful to permit linking proprietary
673
+
applications with the library. If this is what you want to do, use the
674
+
GNU Lesser General Public License instead of this License. But first,
675
+
please read <https://www.gnu.org/licenses/why-not-lgpl.html>.
676
+
+10
include/zaprus.h
+10
include/zaprus.h
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
6
+
//
7
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
8
+
//
9
+
// You should have received a copy of the GNU General Public License along with Zaprus. If not, see <https://www.gnu.org/licenses/>.
10
+
1
11
#ifndef ZAPRUS_H
2
12
#define ZAPRUS_H
3
13
+16
src/Client.zig
+16
src/Client.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
const base64_enc = std.base64.standard.Encoder;
2
18
const base64_dec = std.base64.standard.Decoder;
3
19
+16
src/Connection.zig
+16
src/Connection.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
socket: RawSocket,
2
18
headers: EthIpUdp,
3
19
connection: SaprusMessage,
+16
src/EthIpUdp.zig
+16
src/EthIpUdp.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
pub const EthIpUdp = packed struct(u336) { // 42 bytes * 8 bits = 336
2
18
// --- UDP (Last in memory, defined first for LSB->MSB) ---
3
19
udp: packed struct {
+16
src/RawSocket.zig
+16
src/RawSocket.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
const RawSocket = @This();
2
18
3
19
const is_debug = builtin.mode == .Debug;
+16
src/c_api.zig
+16
src/c_api.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
const std = @import("std");
2
18
const zaprus = @import("zaprus");
3
19
+16
src/main.zig
+16
src/main.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
const is_debug = builtin.mode == .Debug;
2
18
3
19
const help =
+16
src/message.zig
+16
src/message.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
pub const MessageTypeError = error{
2
18
NotImplementedSaprusType,
3
19
UnknownSaprusType,
+16
src/root.zig
+16
src/root.zig
···
1
+
// Copyright 2026 Robby Zambito
2
+
//
3
+
// This file is part of zaprus.
4
+
//
5
+
// Zaprus is free software: you can redistribute it and/or modify it under the
6
+
// terms of the GNU General Public License as published by the Free Software
7
+
// Foundation, either version 3 of the License, or (at your option) any later
8
+
// version.
9
+
//
10
+
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
11
+
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12
+
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
+
//
14
+
// You should have received a copy of the GNU General Public License along with
15
+
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
16
+
1
17
pub const Client = @import("Client.zig");
2
18
pub const Connection = @import("Connection.zig");
3
19