Adversarial C2 Protocol Implemented in Zig
+40
-11
+40
-11
src/main.zig
+40
-11
src/main.zig
···
97
97
const linux_socket = std.os.linux.socket(AF.PACKET, SOCK.RAW, 0);
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98
const errno = std.os.linux.errno(linux_socket);
99
99
if (errno != .SUCCESS) {
100
-
std.debug.log("Failed to open socket: {t}\n", .{errno});
100
+
std.debug.print("Failed to open socket: {t}\n", .{errno});
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return error.Error; // TODO: better error
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102
}
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break :blk linux_socket;
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104
};
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const socket_fd = blk: {
106
-
const socket_fd = std.os.linux.bind(linux_socket, @bitCast(std.os.linux.sockaddr.ll{
107
-
.protocol = ,
106
+
const socket_fd = std.os.linux.bind(@intCast(linux_socket), @bitCast(std.os.linux.sockaddr.ll{
107
+
// https://codeberg.org/jeffective/gatorcat/src/commit/1da40c85c2d063368e2e5c130e654cb32b6bff0e/src/module/nic.zig#L137
108
+
.protocol = std.mem.nativeToBig(u16, @as(u16, std.os.linux.ETH.P.ALL)),
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109
.ifindex = 1,
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-
.hatype = ,
110
-
.pkttype = ,
111
-
.halen = ,
110
+
.hatype = 0,
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+
.pkttype = 0,
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+
.halen = 0,
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.addr = @splat(0),
113
-
}), @sizeOf(std.os.linux.sockaddr.ll));
114
+
}), @sizeOf(std.os.linux.sockaddr.ll));
115
+
116
+
const errno = std.os.linux.errno(socket_fd);
117
+
118
+
if (errno != .SUCCESS) {
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+
std.debug.print("Failed to create link layer socket: {t}\n", .{errno});
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+
return error.Error; // TODO: better error
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+
}
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+
break :blk socket_fd;
114
123
};
115
-
const ip: std.Io.net.IpAddress = .{ .ip4 = .unspecified(0) };
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-
const socket = try ip.bind(init.io, .{ .mode = .raw, .protocol = .raw });
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defer socket.close(init.io);
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124
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-
try socket.send(init.io, &.{ .ip4 = try .parse("255.255.255.255", 8888) }, "foo");
125
+
const EthIpUdp = struct {
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+
// eth
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+
dst_mac: [6]u8 = @splat(0xff),
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+
src_mac: [6]u8,
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+
eth_type: u16 = std.os.linux.ETH.P.IP,
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+
// ip
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+
ip_version: u4 = 4,
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+
};
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+
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+
// const ip: std.Io.net.IpAddress = .{ .ip4 = .unspecified(0) };
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+
// const socket = try ip.bind(init.io, .{ .mode = .rdm, .protocol = .raw });
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+
// defer socket.close(init.io);
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+
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+
// try socket.send(init.io, &.{ .ip4 = .{ .bytes = @splat(255), .port = 8888 } }, "foo");
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139
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// var sock_buffer: [1500]u8 = undefined;
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// var raw_socket_writer: RawSocketWriter = try .init("enp7s0", &sock_buffer); // /proc/net/dev
···
169
188
const SaprusClient = zaprus.Client;
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const SaprusMessage = zaprus.Message;
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const RawSocketWriter = zaprus.RawSocketWriter;
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+
192
+
// Import C headers for network constants and structs
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const c = @cImport({
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+
@cInclude("sys/socket.h");
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+
@cInclude("linux/if_packet.h");
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@cInclude("net/ethernet.h");
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+
@cInclude("sys/ioctl.h");
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@cInclude("net/if.h");
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@cInclude("arpa/inet.h");
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});
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const AF = std.os.linux.AF;
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const SOCK = std.os.linux.SOCK;