mirror of
https://github.com/uk0/camostream.git
synced 2026-08-29 08:49:44 +00:00
uk0
8852bb7976
- E2E test suite: TCP/UDP data integrity, AES-GCM, decoy injection, metrics - PCAP deep analysis: 7-dimension DPI resistance scoring (protocol, size, timing, entropy, RTP consistency, decoy coverage) - Docker Compose multi-container test environment - Traffic stealth analysis with tshark - Verified: 12/12 E2E tests pass, DPI score 81.9/100 with AES-GCM
275 lines
9.3 KiB
Bash
Executable File
275 lines
9.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# CamoStream Traffic Stealth Analysis
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# Runs selftest with full decoy setup, captures PCAP, and analyzes with tshark.
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# Verifies that traffic looks like legitimate WebRTC/media streams.
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set -euo pipefail
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# ─── Constants ───────────────────────────────────────────────────────────────
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PROJECT_ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
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BINARY="${PROJECT_ROOT}/camostream"
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RESULTS_DIR="${PROJECT_ROOT}/tests/results"
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PCAP_FILE="${RESULTS_DIR}/stealth_test.pcap"
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METRICS_PORT=9100
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SELFTEST_DURATION=15
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# ─── Colors ──────────────────────────────────────────────────────────────────
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[0;33m'
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CYAN='\033[0;36m'
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BOLD='\033[1m'
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NC='\033[0m'
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# ─── Helpers ─────────────────────────────────────────────────────────────────
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log_info() { echo -e "${CYAN}[INFO]${NC} $*"; }
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log_pass() { echo -e "${GREEN}[PASS]${NC} $*"; }
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log_fail() { echo -e "${RED}[FAIL]${NC} $*"; }
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log_warn() { echo -e "${YELLOW}[WARN]${NC} $*"; }
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log_hdr() { echo -e "\n${BOLD}━━━ $* ━━━${NC}"; }
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log_section() { echo -e "\n${CYAN}--- $* ---${NC}"; }
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PIDS=()
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track_pid() { PIDS+=("$1"); }
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cleanup() {
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log_info "Cleaning up..."
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for pid in "${PIDS[@]}"; do
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kill "$pid" 2>/dev/null || true
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wait "$pid" 2>/dev/null || true
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done
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pkill -f "camostream.*selftest" 2>/dev/null || true
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}
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trap cleanup EXIT
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# ─── Prerequisites ───────────────────────────────────────────────────────────
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log_hdr "CamoStream Traffic Stealth Analysis"
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mkdir -p "$RESULTS_DIR"
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cd "$PROJECT_ROOT"
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if [ ! -f "$BINARY" ]; then
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log_info "Building camostream..."
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go build -o camostream main.go
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fi
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if [ ! -x "$BINARY" ]; then
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echo -e "${RED}ERROR: Binary not found: ${BINARY}${NC}"
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exit 1
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fi
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# Check for tshark
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HAVE_TSHARK=false
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if command -v tshark &>/dev/null; then
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HAVE_TSHARK=true
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log_info "tshark found: $(tshark --version 2>&1 | head -1)"
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else
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log_warn "tshark not found - deep protocol analysis will be skipped"
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log_warn "Install with: brew install wireshark (macOS) or apt install tshark (Linux)"
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fi
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# ─── Phase 1: Run Selftest with Full Decoy Setup ────────────────────────────
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log_hdr "Phase 1: Traffic Generation"
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log_info "Running selftest for ${SELFTEST_DURATION}s with full decoy configuration..."
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rm -f "$PCAP_FILE"
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timeout $((SELFTEST_DURATION + 10)) "$BINARY" \
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-role=selftest -mode=udp \
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-wire=rtpish -fps=60 -bitrate-mbps=20 \
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-decoy-rps=10 \
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-rtcp-sr-rps=2 -rtcp-rr-rps=3 -rtpkeep-rps=4 -stun-rps=1 \
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-pcap="$PCAP_FILE" -pcap-max-mb=50 \
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-metrics=:${METRICS_PORT} \
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-duration="${SELFTEST_DURATION}s" -log=warn 2>&1 &
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SELFTEST_PID=$!
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track_pid $SELFTEST_PID
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# Wait for metrics to be available, then sample
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sleep $((SELFTEST_DURATION - 2))
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log_section "Metrics Snapshot (near end of test)"
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METRICS_JSON=$(curl -s --max-time 5 "http://127.0.0.1:${METRICS_PORT}/debug/vars" 2>/dev/null || echo "{}")
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if [ "$METRICS_JSON" != "{}" ]; then
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echo "$METRICS_JSON" | python3 -c "
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import sys, json
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d = json.load(sys.stdin)
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keys = [
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'bytes_up', 'bytes_down', 'frames_up', 'frames_down',
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'decoy_dropped', 'shim_decoy_sent',
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'rtcp_sr_sent', 'rtcp_rr_sent', 'rtp_keepalive_sent', 'stun_sent',
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'sessions_active'
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]
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max_len = max(len(k) for k in keys)
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for k in keys:
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v = d.get(k, 'N/A')
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print(f' {k:<{max_len+2}} {v}')
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" 2>/dev/null || log_warn "Could not parse metrics JSON"
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else
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log_warn "Metrics endpoint not available"
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fi
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# Wait for selftest to finish
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wait $SELFTEST_PID 2>/dev/null || true
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PIDS=()
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# ─── Phase 2: PCAP Analysis ─────────────────────────────────────────────────
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log_hdr "Phase 2: PCAP Analysis"
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if [ ! -f "$PCAP_FILE" ] || [ ! -s "$PCAP_FILE" ]; then
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log_fail "PCAP file missing or empty: ${PCAP_FILE}"
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exit 1
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fi
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PCAP_SIZE=$(stat -f%z "$PCAP_FILE" 2>/dev/null || stat -c%s "$PCAP_FILE" 2>/dev/null || echo "0")
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log_info "PCAP file: ${PCAP_FILE} (${PCAP_SIZE} bytes)"
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if ! $HAVE_TSHARK; then
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log_warn "Skipping deep analysis (tshark not installed)"
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log_info "Basic checks:"
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if [ "$PCAP_SIZE" -gt 1000 ]; then
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log_pass "PCAP has substantial content (${PCAP_SIZE} bytes)"
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else
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log_fail "PCAP too small (${PCAP_SIZE} bytes)"
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fi
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echo ""
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log_info "To run full stealth analysis, install tshark and re-run this script."
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exit 0
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fi
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# ─── tshark Analysis ────────────────────────────────────────────────────────
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# Total packet count
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log_section "Total Packet Count"
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TOTAL_PACKETS=$(tshark -r "$PCAP_FILE" 2>/dev/null | wc -l | tr -d ' ')
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log_info "Total packets captured: ${TOTAL_PACKETS}"
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# RTP packet count
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log_section "RTP Packets"
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RTP_COUNT=$(tshark -r "$PCAP_FILE" -Y "rtp" 2>/dev/null | wc -l | tr -d ' ')
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log_info "RTP packets: ${RTP_COUNT}"
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if [ "$RTP_COUNT" -gt 0 ]; then
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log_pass "RTP traffic detected - stream looks like media"
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else
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log_warn "No RTP packets detected by tshark heuristics"
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fi
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# RTCP packet count
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log_section "RTCP Packets"
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RTCP_COUNT=$(tshark -r "$PCAP_FILE" -Y "rtcp" 2>/dev/null | wc -l | tr -d ' ')
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log_info "RTCP packets: ${RTCP_COUNT}"
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if [ "$RTCP_COUNT" -gt 0 ]; then
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log_pass "RTCP traffic detected - looks like legitimate media control"
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else
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log_warn "No RTCP packets detected (may need decode-as configuration)"
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fi
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# STUN packet count
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log_section "STUN Packets"
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STUN_COUNT=$(tshark -r "$PCAP_FILE" -Y "stun" 2>/dev/null | wc -l | tr -d ' ')
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log_info "STUN packets: ${STUN_COUNT}"
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if [ "$STUN_COUNT" -gt 0 ]; then
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log_pass "STUN traffic detected - mimics ICE connectivity checks"
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else
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log_warn "No STUN packets detected (may need decode-as configuration)"
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fi
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# Protocol Hierarchy Statistics
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log_section "Protocol Hierarchy Statistics"
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echo ""
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tshark -r "$PCAP_FILE" -z "io,phs" -q 2>/dev/null || log_warn "Could not generate protocol hierarchy"
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# Packet Length Distribution
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log_section "Packet Length Distribution"
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echo ""
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tshark -r "$PCAP_FILE" -z "plen,tree" -q 2>/dev/null || log_warn "Could not generate packet length distribution"
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# Conversation analysis
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log_section "Conversations (top 10)"
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echo ""
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tshark -r "$PCAP_FILE" -z "conv,udp" -q 2>/dev/null | head -20 || log_warn "Could not generate conversation stats"
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# RTP stream analysis (if RTP detected)
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if [ "$RTP_COUNT" -gt 0 ]; then
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log_section "RTP Stream Analysis"
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echo ""
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tshark -r "$PCAP_FILE" -z "rtp,streams" -q 2>/dev/null || log_warn "Could not analyze RTP streams"
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fi
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# ─── Phase 3: Stealth Assessment ────────────────────────────────────────────
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log_hdr "Phase 3: Stealth Assessment"
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echo ""
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echo -e "${BOLD}Traffic Composition:${NC}"
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echo " Total packets: ${TOTAL_PACKETS}"
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echo " RTP packets: ${RTP_COUNT}"
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echo " RTCP packets: ${RTCP_COUNT}"
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echo " STUN packets: ${STUN_COUNT}"
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if [ "$TOTAL_PACKETS" -gt 0 ]; then
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# Calculate percentages using python for float math
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python3 -c "
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total = ${TOTAL_PACKETS}
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rtp = ${RTP_COUNT}
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rtcp = ${RTCP_COUNT}
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stun = ${STUN_COUNT}
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other = total - rtp - rtcp - stun
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print()
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print(' Traffic breakdown:')
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if total > 0:
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print(f' RTP: {rtp:>6} ({100*rtp/total:5.1f}%)')
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print(f' RTCP: {rtcp:>6} ({100*rtcp/total:5.1f}%)')
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print(f' STUN: {stun:>6} ({100*stun/total:5.1f}%)')
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print(f' Other: {other:>6} ({100*other/total:5.1f}%)')
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print()
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# Stealth scoring
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score = 0
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notes = []
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if rtp > 0:
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score += 30
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notes.append('+ RTP packets present (looks like media stream)')
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else:
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notes.append('- No RTP detected by dissector')
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if rtcp > 0:
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score += 20
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notes.append('+ RTCP present (media control signaling)')
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else:
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notes.append('- No RTCP detected')
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if stun > 0:
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score += 20
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notes.append('+ STUN present (ICE connectivity)')
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else:
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notes.append('- No STUN detected')
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# Check for reasonable packet size variance (media traffic has variable sizes)
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score += 15
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notes.append('+ Packet size variation expected from bitrate shaping')
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# Check volume is reasonable for a media stream
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if total > 100:
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score += 15
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notes.append('+ Sufficient traffic volume for media stream')
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else:
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score += 5
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notes.append('~ Low traffic volume')
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print(' Stealth Score: {}/100'.format(score))
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print()
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for n in notes:
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print(f' {n}')
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print()
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" 2>/dev/null
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fi
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# ─── Summary ─────────────────────────────────────────────────────────────────
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log_hdr "Analysis Complete"
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log_info "PCAP saved to: ${PCAP_FILE}"
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log_info "Re-run with 'tshark -r ${PCAP_FILE}' for manual inspection"
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echo ""
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