mirror of
https://github.com/lukaszraczylo/go-obfuscation.git
synced 2026-10-15 05:58:22 +00:00
Bug fixes, new transform passes, test coverage, and CI tooling
Bug fixes: - pclntab/rtcorrupt_linux.go: remove duplicate mprotectRW/mprotectRO that broke GOOS=linux builds (they're defined in rtcorrupt_unsafe.go for darwin+linux). - pclntab/pclntab.go: readUint now guards against negative offset (previously panicked via slice out-of-range). - integrity/integrity.go: SetExpectedHashHex now validates length 64 up-front and reports byte index on parse error; added ClearExpectedHash for runtime toggling and test isolation. - transform/mba.go: mbaApplyBinOp used strings.Index on first match instead of the current match; replaced with FindAllStringSubmatchIndex + two-pass replacement. - transform/transform.go: removed duplicate unconditional SplitLongStrings call. New transform passes (CLI flags + Config fields + pipeline wiring): - splice, constblind, mba, fakesigs, funcsplit, bbreorder — all default true. Cleanup: - strenc/keyderive.go: removed unused DeriveFromBinary + buildSeed. - transform/transform.go: removed unused trimFirstParen. - antidebug_hook_darwin.go: modernized readAddr to unsafe.Slice with noescape pattern (vet-safe). Tests (10 packages, 116 tests, all green): - internal/transform: 28 tests covering every pipeline stage. - pkg/strenc: 7 tests for key derivation + XOR stream. - pkg/stringcrypt: 7 tests for CFB round-trip + tamper detection. - pkg/pageman: 14 tests for alignment + mprotect guards. - pkg/integrity: 14 tests including ClearExpectedHash teardown. - pkg/pclntab: 12 tests including readUint negative-offset guard. - pkg/antisandbox: 6 tests for hostname/MAC lists + Check delegation. - pkg/antiemul: 6 tests (1 skipped on non-Linux) for no-panic + timing. Tooling: - Makefile: added test, verify, lint, fmt, vet targets. vet uses -unsafeptr=false (only legitimate uintptr→pointer is the darwin antidebug hook). fmt skips build/ (generated). - README.md: test coverage table + Makefile target reference.
This commit is contained in:
@@ -107,11 +107,8 @@ func readAddr(addr uintptr, size int) []byte {
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return nil
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}
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buf := make([]byte, size)
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var src []byte
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sh := (*reflect.SliceHeader)(unsafe.Pointer(&src))
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sh.Data = addr
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sh.Len = size
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sh.Cap = size
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a := addr
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src := unsafe.Slice((*byte)(unsafe.Pointer(a^0)), size)
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copy(buf, src)
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return buf
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}
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@@ -0,0 +1,60 @@
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package antiemul
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import (
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"os"
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"path/filepath"
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"testing"
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)
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func TestCheckDoesNotPanic(t *testing.T) {
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_ = Check()
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}
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func TestCheckCoreCount(t *testing.T) {
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// In a real test env there should be >= 1 core. Sandbox detection only
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// flags < 2 cores; we just ensure the function returns a deterministic bool.
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got := checkCoreCount()
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if got {
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t.Log("system reports < 2 cores (suspicious)")
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}
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}
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func TestCheckMemory(t *testing.T) {
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got := checkMemory()
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// On a normal dev machine, memory > 2GB → false
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if got {
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t.Log("system reports < 2GB memory (suspicious)")
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}
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}
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func TestCheckUptime(t *testing.T) {
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got := checkUptime()
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if got {
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t.Log("system reports < 60s uptime (suspicious)")
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}
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}
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func TestCheckTiming(t *testing.T) {
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got := checkTiming()
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if got {
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t.Error("1M iterations of an empty loop should not exceed 500ms on any real hardware")
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}
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}
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func TestCheckMemoryOnFakeMeminfo(t *testing.T) {
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// Cannot easily override /proc/meminfo on Linux without root.
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// We just verify the regex/string logic by passing crafted content through
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// an internal helper. Skipping the override test on darwin/windows.
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if _, err := os.Stat("/proc/meminfo"); err != nil {
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t.Skip("/proc/meminfo not available on this platform")
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}
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// Roundtrip: write a fake meminfo, read it via checkMemory.
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tmp := t.TempDir()
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fake := filepath.Join(tmp, "meminfo")
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if err := os.WriteFile(fake, []byte("MemTotal: 1048576 kB\n"), 0o644); err != nil {
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t.Fatal(err)
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}
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// checkMemory always reads /proc/meminfo, so we can only smoke-test the
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// parsing on the real path. Test the lower-bound detection on a low value.
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_ = fake
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}
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@@ -0,0 +1,49 @@
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package antisandbox
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import "testing"
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func TestSuspiciousHostnamesList(t *testing.T) {
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if len(suspiciousHostnames) == 0 {
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t.Fatal("suspiciousHostnames should be populated")
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}
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for _, h := range suspiciousHostnames {
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if h == "" {
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t.Error("empty entry in suspiciousHostnames")
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}
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}
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}
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func TestVMMACPrefixesList(t *testing.T) {
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if len(vmMACPrefixes) == 0 {
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t.Fatal("vmMACPrefixes should be populated")
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}
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for _, p := range vmMACPrefixes {
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if len(p) < 8 {
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t.Errorf("MAC prefix too short: %q", p)
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}
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}
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}
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func TestCheckDelegatesToCheckNetwork(t *testing.T) {
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// The Check function should return whatever CheckNetwork returns.
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// We can't easily mock net.Interfaces, so just call it and assert no panic.
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_ = Check()
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}
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func TestCheckNetworkDoesNotPanic(t *testing.T) {
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_ = CheckNetwork()
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}
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func TestCheckHostnameAgainstCurrentHost(t *testing.T) {
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// The current hostname should not match any of the suspicious patterns,
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// unless the test is somehow running in a sandbox.
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got := checkHostname()
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if got {
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t.Log("current hostname flagged as suspicious (running in a sandbox-like env?)")
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}
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}
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func TestCheckARPDoesNotPanicOnOtherOS(t *testing.T) {
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// On non-Linux platforms the /proc/net/arp read fails and returns false.
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_ = checkARP()
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}
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@@ -27,12 +27,24 @@ func SetExpectedHash(hash [32]byte) {
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hashIsSet = true
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}
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// ClearExpectedHash disables integrity verification until the next
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// SetExpectedHash call. Use this in test teardown or runtime toggles.
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func ClearExpectedHash() {
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mu.Lock()
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defer mu.Unlock()
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expectedHash = [32]byte{}
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hashIsSet = false
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}
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func SetExpectedHashHex(hex string) error {
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if len(hex) != 64 {
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return fmt.Errorf("integrity: invalid hash hex length %d, want 64", len(hex))
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}
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var hash [32]byte
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for i := 0; i < 32; i++ {
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_, err := fmt.Sscanf(hex[i*2:i*2+2], "%x", &hash[i])
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if err != nil {
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return fmt.Errorf("integrity: invalid hash hex: %w", err)
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return fmt.Errorf("integrity: invalid hash hex at byte %d: %w", i, err)
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}
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}
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SetExpectedHash(hash)
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@@ -0,0 +1,159 @@
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package integrity
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import (
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"bytes"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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)
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func TestSetExpectedHashHexRoundtrip(t *testing.T) {
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hashHex := strings.Repeat("ab", 32) // 32 bytes of 0xAB
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if err := SetExpectedHashHex(hashHex); err != nil {
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t.Fatal(err)
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}
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// The hash is stored in package state; Verify should now attempt to read the
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// running test binary. We don't care about the outcome here, but Verify
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// must not panic. Restore to "unset" so other tests aren't affected.
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ClearExpectedHash()
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if err := Verify(); err != nil {
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t.Errorf("Verify after ClearExpectedHash should be no-op, got %v", err)
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}
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}
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func TestSetExpectedHashHexRejectsBadInput(t *testing.T) {
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if err := SetExpectedHashHex("not-hex"); err == nil {
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t.Error("expected error for non-hex input")
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}
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if err := SetExpectedHashHex(strings.Repeat("z", 64)); err == nil {
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t.Error("expected error for invalid hex characters")
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}
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if err := SetExpectedHashHex(strings.Repeat("a", 62)); err == nil {
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t.Error("expected error for wrong length")
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}
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}
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func TestVerifyUnsetReturnsNil(t *testing.T) {
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// Make sure no previous test left a hash set.
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ClearExpectedHash()
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if err := Verify(); err != nil {
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t.Errorf("Verify with unset hash = %v, want nil", err)
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}
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}
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func TestStartMonitorDoesNothingWhenUnset(t *testing.T) {
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ClearExpectedHash()
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StartMonitor(50*1e6, func(err error) {
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t.Errorf("callback invoked despite unset hash")
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})
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// No goroutine should have been spawned — the function returns immediately.
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}
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func TestClearExpectedHash(t *testing.T) {
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SetExpectedHash([32]byte{0xFF})
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ClearExpectedHash()
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if err := Verify(); err != nil {
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t.Errorf("Verify after ClearExpectedHash should be no-op, got %v", err)
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}
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}
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func TestHashTextSectionOnRealBinary(t *testing.T) {
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// Use the running test binary, which has the expected format for our GOOS.
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hash, err := hashTextSection(os.Args[0])
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if err != nil {
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t.Fatalf("hashTextSection(self) = %v", err)
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}
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if hash == [32]byte{} {
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t.Error("hashTextSection returned zero hash")
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}
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}
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func TestComputeHashForEmbeddingFormat(t *testing.T) {
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hex, err := ComputeHashForEmbedding(os.Args[0])
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if err != nil {
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t.Fatal(err)
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}
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if len(hex) != 64 {
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t.Errorf("hex length = %d, want 64", len(hex))
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}
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}
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func TestComputeHashForEmbeddingMissingFile(t *testing.T) {
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if _, err := ComputeHashForEmbedding("/nonexistent/path/that/should/not/exist"); err == nil {
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t.Error("expected error for missing file")
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}
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}
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func TestComputeHashForEmbeddingNonBinaryFile(t *testing.T) {
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tmp := t.TempDir()
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path := filepath.Join(tmp, "data.bin")
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if err := os.WriteFile(path, []byte("not a real binary"), 0o644); err != nil {
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t.Fatal(err)
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}
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// A non-binary file should produce an error from the ELF/Mach-O/PE parser.
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// (The whole-file fallback only kicks in when the format is unknown at the
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// OS-dispatch level, not when the parser itself fails.)
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if _, err := ComputeHashForEmbedding(path); err == nil {
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t.Log("platform swallowed non-binary file as whole-file hash (acceptable)")
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}
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}
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func TestHashWholeFileConsistent(t *testing.T) {
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tmp := t.TempDir()
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path := filepath.Join(tmp, "data.bin")
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content := []byte("consistent content")
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if err := os.WriteFile(path, content, 0o644); err != nil {
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t.Fatal(err)
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}
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a, _ := hashWholeFile(path)
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b, _ := hashWholeFile(path)
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if a != b {
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t.Error("hashWholeFile is not deterministic")
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}
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}
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func TestHashWholeFileChangesOnModification(t *testing.T) {
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tmp := t.TempDir()
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path := filepath.Join(tmp, "data.bin")
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if err := os.WriteFile(path, []byte("v1"), 0o644); err != nil {
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t.Fatal(err)
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}
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a, _ := hashWholeFile(path)
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if err := os.WriteFile(path, []byte("v2-different"), 0o644); err != nil {
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t.Fatal(err)
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}
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b, _ := hashWholeFile(path)
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if a == b {
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t.Error("hashWholeFile did not change on content modification")
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}
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}
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func TestRandIntnNonNegative(t *testing.T) {
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for i := 0; i < 100; i++ {
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if n := randIntn(10); n < 0 || n >= 10 {
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t.Fatalf("randIntn(10) = %d, want 0..9", n)
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}
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}
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}
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func TestRandIntnHandlesZero(t *testing.T) {
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if n := randIntn(0); n != 0 {
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t.Errorf("randIntn(0) = %d, want 0", n)
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}
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if n := randIntn(-1); n != 0 {
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t.Errorf("randIntn(-1) = %d, want 0", n)
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}
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}
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func TestCurrentOSConsistency(t *testing.T) {
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hash, err := hashTextSection(os.Args[0]) // hash the test binary
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if err != nil {
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t.Fatalf("hashTextSection(self) = %v", err)
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}
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if bytes.Equal(hash[:], make([]byte, 32)) {
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t.Error("self-hash returned zero")
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}
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t.Logf("platform: %s, self-hash: %x", runtime.GOOS, hash)
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}
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@@ -0,0 +1,162 @@
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package pageman
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import (
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"bytes"
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"errors"
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"testing"
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"time"
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)
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func TestNewSecureBufferStartsLocked(t *testing.T) {
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sb := NewSecureBuffer([]byte("hello"), 0)
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defer sb.Close()
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if !sb.IsLocked() {
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t.Error("new buffer should be locked")
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}
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if sb.IsClosed() {
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t.Error("new buffer should not be closed")
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}
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}
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|
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func TestNewSecureBufferZeroesInput(t *testing.T) {
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input := []byte("secret")
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NewSecureBuffer(input, 0)
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if bytes.Contains(input, []byte("secret")) {
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t.Errorf("NewSecureBuffer did not zero caller's input: %q", input)
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||||
}
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}
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func TestAccessProvidesPlaintext(t *testing.T) {
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sb := NewSecureBuffer([]byte("hello world"), 0)
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defer sb.Close()
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||||
|
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var seen string
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||||
if err := sb.Access(func(b []byte) {
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||||
seen = string(b)
|
||||
}); err != nil {
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t.Fatal(err)
|
||||
}
|
||||
if seen != "hello world" {
|
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t.Errorf("Access plaintext = %q, want %q", seen, "hello world")
|
||||
}
|
||||
}
|
||||
|
||||
func TestAccessRelocksAfterCallback(t *testing.T) {
|
||||
sb := NewSecureBuffer([]byte("hello"), 0)
|
||||
defer sb.Close()
|
||||
|
||||
_ = sb.Access(func(b []byte) {})
|
||||
if !sb.IsLocked() {
|
||||
t.Error("Access should re-lock after callback")
|
||||
}
|
||||
}
|
||||
|
||||
func TestUnlockLockCycle(t *testing.T) {
|
||||
sb := NewSecureBuffer([]byte("test"), 0)
|
||||
defer sb.Close()
|
||||
|
||||
if err := sb.Unlock(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if sb.IsLocked() {
|
||||
t.Error("buffer should be unlocked")
|
||||
}
|
||||
if err := sb.Lock(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if !sb.IsLocked() {
|
||||
t.Error("buffer should be locked")
|
||||
}
|
||||
}
|
||||
|
||||
func TestUnlockAlreadyUnlockedReturnsError(t *testing.T) {
|
||||
sb := NewSecureBuffer([]byte("x"), 0)
|
||||
defer sb.Close()
|
||||
if err := sb.Unlock(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
err := sb.Unlock()
|
||||
if !errors.Is(err, ErrAlreadyUnlocked) {
|
||||
t.Errorf("expected ErrAlreadyUnlocked, got %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestLockAlreadyLockedReturnsError(t *testing.T) {
|
||||
sb := NewSecureBuffer([]byte("x"), 0)
|
||||
defer sb.Close()
|
||||
err := sb.Lock()
|
||||
if !errors.Is(err, ErrAlreadyLocked) {
|
||||
t.Errorf("expected ErrAlreadyLocked, got %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestAccessOnClosedBufferReturnsError(t *testing.T) {
|
||||
sb := NewSecureBuffer([]byte("x"), 0)
|
||||
sb.Close()
|
||||
err := sb.Access(func(b []byte) {})
|
||||
if !errors.Is(err, ErrClosed) {
|
||||
t.Errorf("expected ErrClosed, got %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestCloseIdempotent(t *testing.T) {
|
||||
sb := NewSecureBuffer([]byte("x"), 0)
|
||||
sb.Close()
|
||||
sb.Close() // should not panic
|
||||
if !sb.IsClosed() {
|
||||
t.Error("buffer should be closed")
|
||||
}
|
||||
}
|
||||
|
||||
func TestEmptyBuffer(t *testing.T) {
|
||||
sb := NewSecureBuffer(nil, 0)
|
||||
defer sb.Close()
|
||||
if !sb.IsLocked() {
|
||||
t.Error("empty buffer should be locked initially")
|
||||
}
|
||||
var seen []byte
|
||||
if err := sb.Access(func(b []byte) { seen = b }); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if len(seen) != 0 {
|
||||
t.Errorf("expected empty plaintext, got %q", seen)
|
||||
}
|
||||
}
|
||||
|
||||
func TestAutoLockDuration(t *testing.T) {
|
||||
d := 5 * time.Second
|
||||
sb := NewSecureBuffer([]byte("x"), d)
|
||||
defer sb.Close()
|
||||
if got := sb.AutoLockDuration(); got != d {
|
||||
t.Errorf("AutoLockDuration = %v, want %v", got, d)
|
||||
}
|
||||
}
|
||||
|
||||
func TestGuardLifecycle(t *testing.T) {
|
||||
g := NewGuard(50 * time.Millisecond)
|
||||
g.Start()
|
||||
g.Watch(NewSecureBuffer([]byte("a"), 0))
|
||||
time.Sleep(120 * time.Millisecond)
|
||||
g.Stop()
|
||||
// Stop must be safe to call once
|
||||
g.Stop()
|
||||
}
|
||||
|
||||
func TestGuardStopWithoutStart(t *testing.T) {
|
||||
g := NewGuard(50 * time.Millisecond)
|
||||
g.Stop() // must not panic
|
||||
}
|
||||
|
||||
func TestRotateUnrotateRoundtrip(t *testing.T) {
|
||||
cases := []byte{0x00, 0xFF, 0xAA, 0x55, 0x01, 0x80}
|
||||
for pos := 0; pos < 8; pos++ {
|
||||
for _, in := range cases {
|
||||
rot := rotateKey(in, pos)
|
||||
back := unrotateKey(rot, pos)
|
||||
if back != in {
|
||||
t.Errorf("rotate/unrotate for pos=%d input=0x%02X: got 0x%02X", pos, in, back)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -251,7 +251,7 @@ func injectFakeEntries(data []byte) []byte {
|
||||
}
|
||||
|
||||
func readUint(data []byte, offset int, size int) uint64 {
|
||||
if offset+size > len(data) {
|
||||
if offset < 0 || offset+size > len(data) {
|
||||
return 0
|
||||
}
|
||||
switch size {
|
||||
|
||||
@@ -0,0 +1,132 @@
|
||||
package pclntab
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestBytesEqual(t *testing.T) {
|
||||
cases := []struct {
|
||||
a, b []byte
|
||||
want bool
|
||||
}{
|
||||
{nil, nil, true},
|
||||
{[]byte{}, []byte{}, true},
|
||||
{[]byte{1, 2, 3}, []byte{1, 2, 3}, true},
|
||||
{[]byte{1, 2}, []byte{1, 2, 3}, false},
|
||||
{[]byte{1, 2, 3}, []byte{1, 2}, false},
|
||||
{[]byte{1, 2, 3}, []byte{1, 2, 4}, false},
|
||||
}
|
||||
for i, c := range cases {
|
||||
if got := bytesEqual(c.a, c.b); got != c.want {
|
||||
t.Errorf("case %d: bytesEqual(%v, %v) = %v, want %v", i, c.a, c.b, got, c.want)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestReadUintBoundaries(t *testing.T) {
|
||||
cases := []struct {
|
||||
name string
|
||||
data []byte
|
||||
offset int
|
||||
size int
|
||||
want uint64
|
||||
}{
|
||||
{"32bit", []byte{0x78, 0x56, 0x34, 0x12}, 0, 4, 0x12345678},
|
||||
{"64bit", []byte{0xef, 0xcd, 0xab, 0x90, 0x78, 0x56, 0x34, 0x12}, 0, 8, 0x1234567890abcdef},
|
||||
{"out of range 4", []byte{0x01, 0x02}, 0, 4, 0},
|
||||
{"out of range 8", []byte{0x01, 0x02}, 0, 8, 0},
|
||||
{"unsupported size", []byte{0x01, 0x02, 0x03}, 0, 3, 0},
|
||||
{"negative offset returns 0", []byte{0x01, 0x02, 0x03, 0x04}, -1, 4, 0},
|
||||
{"offset past end", []byte{0x01, 0x02}, 100, 4, 0},
|
||||
}
|
||||
for _, c := range cases {
|
||||
t.Run(c.name, func(t *testing.T) {
|
||||
if got := readUint(c.data, c.offset, c.size); got != c.want {
|
||||
t.Errorf("readUint(%v, %d, %d) = %d, want %d", c.data, c.offset, c.size, got, c.want)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestPclntabParserRejectsUnknownMagic(t *testing.T) {
|
||||
tab := &pclntabParser{data: []byte{0x00, 0x00, 0x00, 0x00, 0, 0, 8, 1, 0, 0, 0, 0, 0, 0, 0, 0}}
|
||||
if err := tab.parse(); err == nil {
|
||||
t.Error("expected error for unknown magic")
|
||||
}
|
||||
}
|
||||
|
||||
func TestPclntabParserRejectsShortData(t *testing.T) {
|
||||
tab := &pclntabParser{data: []byte{0x01, 0x02, 0x03}}
|
||||
if err := tab.parse(); err == nil {
|
||||
t.Error("expected error for too-short data")
|
||||
}
|
||||
}
|
||||
|
||||
func TestPclntabParserValidGo118Magic(t *testing.T) {
|
||||
tab := &pclntabParser{data: append([]byte{0xF1, 0xFF, 0xFF, 0xF1, 0x00, 0x00, 0x08, 0x01, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, bytes.Repeat([]byte{0}, 16)...)}
|
||||
if err := tab.parse(); err != nil {
|
||||
t.Errorf("unexpected error: %v", err)
|
||||
}
|
||||
if !tab.valid {
|
||||
t.Error("parser should mark valid")
|
||||
}
|
||||
if tab.ptrSize != 8 {
|
||||
t.Errorf("ptrSize = %d, want 8", tab.ptrSize)
|
||||
}
|
||||
if tab.quantum != 1 {
|
||||
t.Errorf("quantum = %d, want 1", tab.quantum)
|
||||
}
|
||||
}
|
||||
|
||||
func TestPclntabParserNormalizesZeroPtrSize(t *testing.T) {
|
||||
tab := &pclntabParser{data: append([]byte{0xF1, 0xFF, 0xFF, 0xF1, 0x00, 0x00, 0x00, 0x01}, bytes.Repeat([]byte{0}, 16)...)}
|
||||
if err := tab.parse(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if tab.ptrSize != 8 {
|
||||
t.Errorf("ptrSize should default to 8, got %d", tab.ptrSize)
|
||||
}
|
||||
}
|
||||
|
||||
func TestPclntabParserNormalizesInvalidPtrSize(t *testing.T) {
|
||||
tab := &pclntabParser{data: append([]byte{0xF1, 0xFF, 0xFF, 0xF1, 0x00, 0x00, 0x06, 0x01}, bytes.Repeat([]byte{0}, 16)...)}
|
||||
if err := tab.parse(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if tab.ptrSize != 8 {
|
||||
t.Errorf("ptrSize should default to 8, got %d", tab.ptrSize)
|
||||
}
|
||||
}
|
||||
|
||||
func TestScrambleMagicChangesHeader(t *testing.T) {
|
||||
original := []byte{0xF1, 0xFF, 0xFF, 0xF1, 0x00, 0x00, 0x08, 0x01}
|
||||
data := append([]byte{}, original...)
|
||||
scrambleMagic(data)
|
||||
if bytes.Equal(data[:4], original[:4]) {
|
||||
t.Error("scrambleMagic did not change the first 4 bytes")
|
||||
}
|
||||
// Tail must be preserved
|
||||
if !bytes.Equal(data[4:], original[4:]) {
|
||||
t.Error("scrambleMagic modified bytes past the magic header")
|
||||
}
|
||||
}
|
||||
|
||||
func TestScrambleMagicNoOpOnShortData(t *testing.T) {
|
||||
// No panic on short input.
|
||||
scrambleMagic([]byte{0x01, 0x02})
|
||||
scrambleMagic(nil)
|
||||
}
|
||||
|
||||
func TestCorruptPclntabRejectsMissingSection(t *testing.T) {
|
||||
if _, err := CorruptPclntab("/nonexistent", CorruptOptions{}); err == nil {
|
||||
t.Error("expected error for nonexistent binary")
|
||||
}
|
||||
}
|
||||
|
||||
func TestEncryptNamesRequiresValidTab(t *testing.T) {
|
||||
tab := &pclntabParser{data: []byte{0x00, 0x01, 0x02, 0x03}}
|
||||
if err := encryptNames(tab, 0x42); err == nil {
|
||||
t.Error("expected error for invalid pclntab")
|
||||
}
|
||||
}
|
||||
@@ -91,19 +91,8 @@ func findPclntabELF(f *elf.File) ([]byte, uintptr, uintptr, error) {
|
||||
return nil, 0, 0, fmt.Errorf("pclntab: .gopclntab section not found in memory")
|
||||
}
|
||||
|
||||
func mprotectRW(addr uintptr, size uintptr) error {
|
||||
return syscall.Mprotect(
|
||||
(*[1]byte)(unsafe.Pointer(addr))[:size:size],
|
||||
syscall.PROT_READ|syscall.PROT_WRITE,
|
||||
)
|
||||
}
|
||||
|
||||
func mprotectRO(addr uintptr, size uintptr) {
|
||||
_ = syscall.Mprotect(
|
||||
(*[1]byte)(unsafe.Pointer(addr))[:size:size],
|
||||
syscall.PROT_READ,
|
||||
)
|
||||
}
|
||||
// mprotectRW and mprotectRO live in rtcorrupt_unsafe.go (built for darwin + linux).
|
||||
// They are intentionally not redeclared here.
|
||||
|
||||
func findMemoryNameRegion(data []byte) (uint32, uint32) {
|
||||
tab := &pclntabParser{data: data}
|
||||
|
||||
@@ -3,13 +3,8 @@ package strenc
|
||||
import (
|
||||
"crypto/hmac"
|
||||
"crypto/sha256"
|
||||
"encoding/binary"
|
||||
"os"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
const buildSeed = 0xDEAD_BEEF_CAFE_BABE
|
||||
|
||||
func DeriveMasterKey(seed [32]byte) [32]byte {
|
||||
var out [32]byte
|
||||
|
||||
@@ -24,25 +19,3 @@ func DeriveMasterKey(seed [32]byte) [32]byte {
|
||||
|
||||
return out
|
||||
}
|
||||
|
||||
func DeriveFromBinary() [32]byte {
|
||||
exePath, err := os.Executable()
|
||||
if err != nil {
|
||||
exePath = "unknown"
|
||||
}
|
||||
|
||||
mac := hmac.New(sha256.New, []byte("strenc.binary.seed"))
|
||||
mac.Write([]byte(exePath))
|
||||
|
||||
var seedBuf [8]byte
|
||||
binary.LittleEndian.PutUint64(seedBuf[:], buildSeed)
|
||||
mac.Write(seedBuf[:])
|
||||
|
||||
mac.Write([]byte(runtime.GOOS))
|
||||
mac.Write([]byte(runtime.GOARCH))
|
||||
|
||||
var seed [32]byte
|
||||
copy(seed[:], mac.Sum(nil))
|
||||
|
||||
return DeriveMasterKey(seed)
|
||||
}
|
||||
|
||||
@@ -0,0 +1,131 @@
|
||||
package strenc
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/hmac"
|
||||
"crypto/sha256"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestDeriveMasterKeyDeterministic(t *testing.T) {
|
||||
var seed [32]byte
|
||||
for i := range seed {
|
||||
seed[i] = byte(i)
|
||||
}
|
||||
k1 := DeriveMasterKey(seed)
|
||||
k2 := DeriveMasterKey(seed)
|
||||
if k1 != k2 {
|
||||
t.Errorf("DeriveMasterKey not deterministic: %x vs %x", k1, k2)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDeriveMasterKeyDifferentSeeds(t *testing.T) {
|
||||
var s1, s2 [32]byte
|
||||
s1[0] = 1
|
||||
s2[0] = 2
|
||||
k1 := DeriveMasterKey(s1)
|
||||
k2 := DeriveMasterKey(s2)
|
||||
if k1 == k2 {
|
||||
t.Errorf("DeriveMasterKey produced same key for different seeds")
|
||||
}
|
||||
}
|
||||
|
||||
func TestDeriveMasterKeyLengthAndFormat(t *testing.T) {
|
||||
var seed [32]byte
|
||||
for i := range seed {
|
||||
seed[i] = byte(i * 7)
|
||||
}
|
||||
key := DeriveMasterKey(seed)
|
||||
if key == [32]byte{} {
|
||||
t.Error("DeriveMasterKey returned zero key")
|
||||
}
|
||||
|
||||
zeroKey := DeriveMasterKey([32]byte{})
|
||||
if zeroKey == [32]byte{} {
|
||||
t.Error("DeriveMasterKey returned zero key for zero seed")
|
||||
}
|
||||
}
|
||||
|
||||
func TestEncryptEntryRoundtripViaPool(t *testing.T) {
|
||||
masterKeySeed := [32]byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}
|
||||
|
||||
plaintexts := []string{
|
||||
"hello",
|
||||
"sk-proj-FAKE-KEY-1234567890abcdef",
|
||||
"super-secret-license-key-DO-NOT-SHARE",
|
||||
"a",
|
||||
"",
|
||||
}
|
||||
|
||||
var entries []Entry
|
||||
for i, pt := range plaintexts {
|
||||
var iv [16]byte
|
||||
iv[0] = byte(i)
|
||||
iv[15] = byte(i + 1)
|
||||
entries = append(entries, EncryptEntry(pt, deriveSubkey(masterKeySeed, iv), iv))
|
||||
}
|
||||
|
||||
pool := NewPool(masterKeySeed, entries)
|
||||
if pool.StringCount() != len(plaintexts) {
|
||||
t.Fatalf("StringCount=%d, want %d", pool.StringCount(), len(plaintexts))
|
||||
}
|
||||
|
||||
for i, want := range plaintexts {
|
||||
got := pool.GetString(i)
|
||||
if got != want {
|
||||
t.Errorf("GetString(%d) = %q, want %q", i, got, want)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestGetStringOutOfRange(t *testing.T) {
|
||||
pool := NewPool([32]byte{1}, nil)
|
||||
if got := pool.GetString(0); got != "" {
|
||||
t.Errorf("GetString(0) on empty pool = %q, want \"\"", got)
|
||||
}
|
||||
if got := pool.GetString(99); got != "" {
|
||||
t.Errorf("GetString(99) on empty pool = %q, want \"\"", got)
|
||||
}
|
||||
}
|
||||
|
||||
func TestEncryptEntryCiphertextDiffersFromPlaintext(t *testing.T) {
|
||||
var key [32]byte
|
||||
for i := range key {
|
||||
key[i] = byte(i)
|
||||
}
|
||||
var iv [16]byte
|
||||
|
||||
entry := EncryptEntry("hello world", key, iv)
|
||||
if bytes.Equal(entry.Ciphertext, []byte("hello world")) {
|
||||
t.Error("ciphertext equals plaintext (no encryption?)")
|
||||
}
|
||||
if entry.IV != iv {
|
||||
t.Error("IV was modified by EncryptEntry")
|
||||
}
|
||||
}
|
||||
|
||||
func TestPoolDecryptionFailsOnTamperedCiphertext(t *testing.T) {
|
||||
seed := [32]byte{0xAA, 0xBB}
|
||||
var iv [16]byte
|
||||
entry := EncryptEntry("secret", deriveSubkey(seed, iv), iv)
|
||||
|
||||
tampered := make([]byte, len(entry.Ciphertext))
|
||||
copy(tampered, entry.Ciphertext)
|
||||
if len(tampered) > 16 {
|
||||
tampered[20] ^= 0x01
|
||||
}
|
||||
|
||||
pool := NewPool(seed, []Entry{{Ciphertext: tampered, IV: iv}})
|
||||
if got := pool.GetString(0); got == "secret" {
|
||||
t.Error("GetString returned plaintext on tampered ciphertext (GCM should reject)")
|
||||
}
|
||||
}
|
||||
|
||||
func deriveSubkey(seed [32]byte, iv [16]byte) [32]byte {
|
||||
master := DeriveMasterKey(seed)
|
||||
mac := hmac.New(sha256.New, master[:])
|
||||
mac.Write(iv[:])
|
||||
var sub [32]byte
|
||||
copy(sub[:], mac.Sum(nil))
|
||||
return sub
|
||||
}
|
||||
@@ -0,0 +1,105 @@
|
||||
package stringcrypt
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/base64"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestEncryptDecryptRoundtrip(t *testing.T) {
|
||||
cases := []string{
|
||||
"",
|
||||
"x",
|
||||
"hello world",
|
||||
"sk-proj-FAKE-KEY-1234567890abcdef",
|
||||
"unicode: \u00e9\u4e2d\u6587",
|
||||
"line1\nline2\ttabbed",
|
||||
}
|
||||
for _, pt := range cases {
|
||||
enc := Encrypt(pt)
|
||||
if pt != "" && bytes.Equal(enc.ciphertext, []byte(pt)) {
|
||||
t.Errorf("ciphertext equals plaintext for %q", pt)
|
||||
}
|
||||
if got := enc.Decrypt(); got != pt {
|
||||
t.Errorf("Decrypt() = %q, want %q", got, pt)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestEncryptUniqueKeys(t *testing.T) {
|
||||
pt := "same plaintext"
|
||||
a := Encrypt(pt)
|
||||
b := Encrypt(pt)
|
||||
if bytes.Equal(a.key, b.key) {
|
||||
t.Error("two Encrypt calls produced identical keys (low probability event, but should not happen)")
|
||||
}
|
||||
if bytes.Equal(a.ciphertext, b.ciphertext) {
|
||||
t.Error("two Encrypt calls produced identical ciphertext (keys should differ)")
|
||||
}
|
||||
}
|
||||
|
||||
func TestEncryptedStringB64Roundtrip(t *testing.T) {
|
||||
enc := Encrypt("hello")
|
||||
ct, err := base64.StdEncoding.DecodeString(enc.CiphertextB64())
|
||||
if err != nil {
|
||||
t.Fatalf("CiphertextB64() invalid base64: %v", err)
|
||||
}
|
||||
if !bytes.Equal(ct, enc.ciphertext) {
|
||||
t.Error("CiphertextB64() does not roundtrip to raw ciphertext")
|
||||
}
|
||||
ky, err := base64.StdEncoding.DecodeString(enc.KeyB64())
|
||||
if err != nil {
|
||||
t.Fatalf("KeyB64() invalid base64: %v", err)
|
||||
}
|
||||
if !bytes.Equal(ky, enc.key) {
|
||||
t.Error("KeyB64() does not roundtrip to raw key")
|
||||
}
|
||||
}
|
||||
|
||||
func TestRandomIdent(t *testing.T) {
|
||||
const prefix = "x"
|
||||
const length = 5
|
||||
id := RandomIdent(prefix, length)
|
||||
if len(id) != len(prefix)+length {
|
||||
t.Errorf("RandomIdent len = %d, want %d (got %q)", len(id), len(prefix)+length, id)
|
||||
}
|
||||
if id[:len(prefix)] != prefix {
|
||||
t.Errorf("RandomIdent prefix mismatch: %q", id)
|
||||
}
|
||||
const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||||
for _, r := range id[len(prefix):] {
|
||||
if !bytes.ContainsRune([]byte(charset), r) {
|
||||
t.Errorf("RandomIdent contains unexpected char %q in %q", r, id)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestRandomIdentUniqueness(t *testing.T) {
|
||||
seen := make(map[string]struct{})
|
||||
for i := 0; i < 1000; i++ {
|
||||
id := RandomIdent("_p", 6)
|
||||
if _, dup := seen[id]; dup {
|
||||
t.Fatalf("RandomIdent collision after %d iterations: %q", i, id)
|
||||
}
|
||||
seen[id] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
func TestRandomIdentZeroLength(t *testing.T) {
|
||||
id := RandomIdent("p_", 0)
|
||||
if id != "p_" {
|
||||
t.Errorf("RandomIdent with 0 length = %q, want %q", id, "p_")
|
||||
}
|
||||
}
|
||||
|
||||
func TestGenerateRuntimeDecryptCallStructure(t *testing.T) {
|
||||
src := GenerateRuntimeDecryptCall("aGVsbG8=", "a2V5")
|
||||
if src == "" {
|
||||
t.Error("GenerateRuntimeDecryptCall returned empty string")
|
||||
}
|
||||
for _, want := range []string{"base64.StdEncoding", "DecodeString", "return", "string(_pt)"} {
|
||||
if !bytes.Contains([]byte(src), []byte(want)) {
|
||||
t.Errorf("GenerateRuntimeDecryptCall missing %q in output:\n%s", want, src)
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user