Merge pull request #1632 from AFLplusplus/dev

push to stable

frida_mode/README.md

@@ -193,6 +193,13 @@ instrumented address block translations.
   backpatching information. By default, the child will report applied
   backpatches to the parent so that they can be applied and then be inherited by
   the next child on fork.
+* `AFL_FRIDA_INST_NO_SUPPRESS` - Disable deterministic branch suppression.
+  Deterministic branch suppression skips the preamble which generates coverage
+  information at the start of each block, if the block is reached by a
+  deterministic branch. This reduces map polution, and may improve performance
+  when all the executing blocks have been prefetched and backpatching applied.
+  However, in the event that backpatching is incomplete, this may incur a
+  performance penatly as branch instructions are disassembled on each branch.
 * `AFL_FRIDA_INST_SEED` - Sets the initial seed for the hash function used to
   generate block (and hence edge) IDs. Setting this to a constant value may be
   useful for debugging purposes, e.g., investigating unstable edges.

frida_mode/frida.map

@@ -22,6 +22,7 @@
     js_api_set_instrument_no_optimize;
     js_api_set_instrument_regs_file;
     js_api_set_instrument_seed;
+    js_api_set_instrument_suppress_disable;
     js_api_set_instrument_trace;
     js_api_set_instrument_trace_unique;
     js_api_set_instrument_unstable_coverage_file;

frida_mode/include/instrument.h

@@ -15,6 +15,7 @@ extern guint64  instrument_hash_zero;
 extern char    *instrument_coverage_unstable_filename;
 extern gboolean instrument_coverage_insn;
 extern char    *instrument_regs_filename;
+extern gboolean instrument_suppress;
 
 extern gboolean instrument_use_fixed_seed;
 extern guint64  instrument_fixed_seed;

frida_mode/src/instrument/instrument.c

@@ -27,6 +27,7 @@ gboolean instrument_optimize = false;
 gboolean instrument_unique = false;
 guint64  instrument_hash_zero = 0;
 guint64  instrument_hash_seed = 0;
+gboolean instrument_suppress = false;
 
 gboolean instrument_use_fixed_seed = FALSE;
 guint64  instrument_fixed_seed = 0;
@@ -290,6 +291,7 @@ void instrument_config(void) {
       (getenv("AFL_FRIDA_INST_UNSTABLE_COVERAGE_FILE"));
   instrument_coverage_insn = (getenv("AFL_FRIDA_INST_INSN") != NULL);
   instrument_regs_filename = getenv("AFL_FRIDA_INST_REGS_FILE");
+  instrument_suppress = (getenv("AFL_FRIDA_INST_NO_SUPPRESS") == NULL);
 
   instrument_debug_config();
   instrument_coverage_config();
@@ -321,6 +323,9 @@ void instrument_init(void) {
   FOKF(cBLU "Instrumentation" cRST " - " cGRN "instructions:" cYEL " [%c]",
        instrument_coverage_insn ? 'X' : ' ');
 
+  FOKF(cBLU "Instrumentation" cRST " - " cGRN "suppression:" cYEL " [%c]",
+       instrument_suppress ? 'X' : ' ');
+
   if (instrument_tracing && instrument_optimize) {
 
     WARNF("AFL_FRIDA_INST_TRACE implies AFL_FRIDA_INST_NO_OPTIMIZE");

frida_mode/src/instrument/instrument_arm64.c

@@ -196,7 +196,15 @@ static void instrument_coverage_switch(GumStalkerObserver *self,
   insn = instrument_disassemble(from_insn);
   deterministic = instrument_is_deterministic(insn);
   cs_free(insn, 1);
-  if (!deterministic) { return; }
+
+  /*
+   * If the branch is deterministic, then we should start execution at the
+   * begining of the block. From here, we will branch and skip the coverage
+   * code and jump right to the target code of the instrumented block.
+   * Otherwise, if the branch is non-deterministic, then we need to branch
+   * part way into the block to where the coverage instrumentation starts.
+   */
+  if (deterministic) { return; }
 
   /*
    * Since each block is prefixed with a restoration prologue, we need to be
@@ -305,7 +313,7 @@ void instrument_coverage_optimize(const cs_insn    *instr,
 
   // gum_arm64_writer_put_brk_imm(cw, 0x0);
 
-  instrument_coverage_suppress_init();
+  if (instrument_suppress) { instrument_coverage_suppress_init(); }
 
   code_addr = cw->pc;
 
@@ -325,9 +333,13 @@ void instrument_coverage_optimize(const cs_insn    *instr,
   block_start =
       GSIZE_TO_POINTER(GUM_ADDRESS(cw->code) - GUM_RESTORATION_PROLOG_SIZE);
 
-  if (!g_hash_table_add(coverage_blocks, block_start)) {
+  if (instrument_suppress) {
 
-    FATAL("Failed - g_hash_table_add");
+    if (!g_hash_table_add(coverage_blocks, block_start)) {
+
+      FATAL("Failed - g_hash_table_add");
+
+    }
 
   }
 
@@ -363,7 +375,17 @@ void instrument_coverage_optimize(const cs_insn    *instr,
 
   code.code.mov_x1_curr_loc_shr_1 |= (area_offset_ror << 5);
 
-  gum_arm64_writer_put_bytes(cw, code.bytes, sizeof(afl_log_code));
+  if (instrument_suppress) {
+
+    gum_arm64_writer_put_bytes(cw, code.bytes, sizeof(afl_log_code));
+
+  } else {
+
+    size_t offset = offsetof(afl_log_code, code.stp_x0_x1);
+    gum_arm64_writer_put_bytes(cw, &code.bytes[offset],
+                               sizeof(afl_log_code) - offset);
+
+  }
 
 }
 

frida_mode/src/instrument/instrument_x64.c

@@ -380,11 +380,15 @@ void instrument_coverage_optimize(const cs_insn    *instr,
 
   }
 
-  instrument_coverage_suppress_init();
+  if (instrument_suppress) {
 
-  if (!g_hash_table_add(coverage_blocks, GSIZE_TO_POINTER(cw->code))) {
+    instrument_coverage_suppress_init();
 
-    FATAL("Failed - g_hash_table_add");
+    if (!g_hash_table_add(coverage_blocks, GSIZE_TO_POINTER(cw->code))) {
+
+      FATAL("Failed - g_hash_table_add");
+
+    }
 
   }
 

frida_mode/src/instrument/instrument_x86.c

@@ -203,13 +203,17 @@ void instrument_coverage_optimize(const cs_insn    *instr,
 
   code.code = template;
 
-  instrument_coverage_suppress_init();
+  if (instrument_suppress) {
 
-  // gum_x86_writer_put_breakpoint(cw);
+    instrument_coverage_suppress_init();
 
-  if (!g_hash_table_add(coverage_blocks, GSIZE_TO_POINTER(cw->code))) {
+    // gum_x86_writer_put_breakpoint(cw);
 
-    FATAL("Failed - g_hash_table_add");
+    if (!g_hash_table_add(coverage_blocks, GSIZE_TO_POINTER(cw->code))) {
+
+      FATAL("Failed - g_hash_table_add");
+
+    }
 
   }
 

frida_mode/src/js/api.js

@@ -170,6 +170,12 @@ class Afl {
     static setInstrumentSeed(seed) {
         Afl.jsApiSetInstrumentSeed(seed);
     }
+    /*
+     * See `AFL_FRIDA_INST_NO_SUPPRESS`
+     */
+    static setInstrumentSuppressDisable() {
+        Afl.jsApiSetInstrumentSuppressDisable();
+    }
     /**
      * See `AFL_FRIDA_INST_TRACE_UNIQUE`.
      */
@@ -339,6 +345,7 @@ Afl.jsApiSetInstrumentLibraries = Afl.jsApiGetFunction("js_api_set_instrument_li
 Afl.jsApiSetInstrumentNoOptimize = Afl.jsApiGetFunction("js_api_set_instrument_no_optimize", "void", []);
 Afl.jsApiSetInstrumentRegsFile = Afl.jsApiGetFunction("js_api_set_instrument_regs_file", "void", ["pointer"]);
 Afl.jsApiSetInstrumentSeed = Afl.jsApiGetFunction("js_api_set_instrument_seed", "void", ["uint64"]);
+Afl.jsApiSetInstrumentSuppressDisable = Afl.jsApiGetFunction("js_api_set_instrument_suppress_disable", "void", []);
 Afl.jsApiSetInstrumentTrace = Afl.jsApiGetFunction("js_api_set_instrument_trace", "void", []);
 Afl.jsApiSetInstrumentTraceUnique = Afl.jsApiGetFunction("js_api_set_instrument_trace_unique", "void", []);
 Afl.jsApiSetInstrumentUnstableCoverageFile = Afl.jsApiGetFunction("js_api_set_instrument_unstable_coverage_file", "void", ["pointer"]);

frida_mode/src/js/js_api.c

@@ -289,6 +289,13 @@ __attribute__((visibility("default"))) void js_api_set_instrument_cache_size(
 
 }
 
+__attribute__((visibility("default"))) void
+js_api_set_instrument_suppress_disable(void) {
+
+  instrument_suppress = false;
+
+}
+
 __attribute__((visibility("default"))) void js_api_set_js_main_hook(
     const js_main_hook_t hook) {
 

frida_mode/test/png/GNUmakefile

@@ -25,7 +25,7 @@ HARNESS_URL:="https://raw.githubusercontent.com/llvm/llvm-project/main/compiler-
 
 PNGTEST_FILE:=$(PNGTEST_BUILD_DIR)target.cc
 PNGTEST_OBJ:=$(PNGTEST_BUILD_DIR)target.o
-PNGTEST_URL:="https://raw.githubusercontent.com/google/fuzzbench/master/benchmarks/libpng-1.2.56/target.cc"
+PNGTEST_URL:="https://raw.githubusercontent.com/google/fuzzbench/e0c4a994b6999bae46e8dec5bcea9a73251b8dba/benchmarks/libpng-1.2.56/target.cc"
 
 TEST_BIN:=$(BUILD_DIR)test
 ifeq "$(shell uname)" "Darwin"

frida_mode/ts/lib/afl.ts

@@ -201,6 +201,13 @@ class Afl {
     Afl.jsApiSetInstrumentSeed(seed);
   }
 
+  /*
+   * See `AFL_FRIDA_INST_NO_SUPPRESS`
+   */
+  public static setInstrumentSuppressDisable(): void{
+    Afl.jsApiSetInstrumentSuppressDisable();
+  }
+
   /**
    * See `AFL_FRIDA_INST_TRACE_UNIQUE`.
    */
@@ -451,6 +458,11 @@ class Afl {
     "void",
     ["uint64"]);
 
+  private static readonly jsApiSetInstrumentSuppressDisable = Afl.jsApiGetFunction(
+    "js_api_set_instrument_suppress_disable",
+    "void",
+    []);
+
   private static readonly jsApiSetInstrumentTrace = Afl.jsApiGetFunction(
     "js_api_set_instrument_trace",
     "void",

frida_mode/ts/package-lock.json

@@ -1,11 +1,433 @@
 {
-  "requires": true,
+  "name": "@worksbutnottested/aflplusplus-frida",
+  "version": "1.0.1",
   "lockfileVersion": 1,
+  "requires": true,
   "dependencies": {
-    "tsc": {
+    "@babel/code-frame": {
-      "version": "2.0.3",
+      "version": "7.18.6",
-      "resolved": "https://registry.npmjs.org/tsc/-/tsc-2.0.3.tgz",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.18.6.tgz",
-      "integrity": "sha512-SN+9zBUtrpUcOpaUO7GjkEHgWtf22c7FKbKCA4e858eEM7Qz86rRDpgOU2lBIDf0fLCsEg65ms899UMUIB2+Ow==",
+      "integrity": "sha512-TDCmlK5eOvH+eH7cdAFlNXeVJqWIQ7gW9tY1GJIpUtFb6CmjVyq2VM3u71bOyR8CRihcCgMUYoDNyLXao3+70Q==",
+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.18.6"
+      }
+    },
+    "@babel/helper-validator-identifier": {
+      "version": "7.19.1",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.19.1.tgz",
+      "integrity": "sha512-awrNfaMtnHUr653GgGEs++LlAvW6w+DcPrOliSMXWCKo597CwL5Acf/wWdNkf/tfEQE3mjkeD1YOVZOUV/od1w==",
+      "dev": true
+    },
+    "@babel/highlight": {
+      "version": "7.18.6",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.18.6.tgz",
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+        "chalk": "^2.0.0",
+        "js-tokens": "^4.0.0"
+      }
+    },
+    "@types/frida-gum": {
+      "version": "16.5.1",
+      "resolved": "https://registry.npmjs.org/@types/frida-gum/-/frida-gum-16.5.1.tgz",
+      "integrity": "sha512-t+2HZG6iBO2cEKtb2KvtP33m/7TGmzSd42YqznToA34+TkS97NttsFZ9OY2s0hPyDQOg+hZTjR1QggRkEL/Ovg=="
+    },
+    "@types/node": {
+      "version": "14.18.36",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.18.36.tgz",
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+      "dev": true
+    },
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+      "dev": true,
+      "requires": {
+        "color-convert": "^1.9.0"
+      }
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+    "argparse": {
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include/envs.h

@@ -68,6 +68,7 @@ static char *afl_environment_variables[] = {
     "AFL_FRIDA_INST_NO_OPTIMIZE",
     "AFL_FRIDA_INST_NO_PREFETCH",
     "AFL_FRIDA_INST_NO_PREFETCH_BACKPATCH",
+    "AFL_FRIDA_INST_NO_SUPPRESS"
     "AFL_FRIDA_INST_RANGES",
     "AFL_FRIDA_INST_REGS_FILE",
     "AFL_FRIDA_INST_SEED",

src/afl-fuzz.c

@@ -1345,12 +1345,11 @@ int main(int argc, char **argv_orig, char **envp) {
   }
 
   #endif
-  if (afl->sync_id && afl->is_main_node &&
+  if (!afl->skip_deterministic && afl->afl_env.afl_custom_mutator_only) {
-      afl->afl_env.afl_custom_mutator_only) {
 
-    WARNF(
+    FATAL(
-        "Using -M main node with the AFL_CUSTOM_MUTATOR_ONLY mutator options "
+        "Using -D determinstic fuzzing is incompatible with "
-        "will result in no deterministic mutations being done!");
+        "AFL_CUSTOM_MUTATOR_ONLY!");
 
   }