MIMIC 2021 [Rev] fastjs

Posted on

fastjs

IDA Pro打开，可以在string窗口中发现quickjs字样。

通过main函数中的：

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lea     rsi, unk_AA6A0
xor     ecx, ecx
mov     edx, 8DDh
mov     rdi, rbp
call    sub_96DB0

可知JavaScript字节码存储在unk_AA6A0，且长度为0x8DD。

将其dump出来，

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/* File generated automatically by the QuickJS compiler. */

#include "quickjs-libc.h"

const uint32_t qjsc_ctf_size = 0x8dd;

const uint8_t qjsc_ctf[0x8dd] = {
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        0xFF, 0x38, 0xE4, 0x00, 0x00, 0x00, 0x38, 0xE1, 0x00, 0x00, 0x00, 0xC5,
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        0xD1, 0xE9, 0xA3, 0xEA, 0x47, 0x38, 0x09, 0x01, 0x00, 0x00, 0xD1, 0x42,
        0x0A, 0x01, 0x00, 0x00, 0xC6, 0xB6, 0x24, 0x02, 0x00, 0xBD, 0x10, 0xF0,
        0xB9, 0xA0, 0x38, 0x09, 0x01, 0x00, 0x00, 0xD1, 0x42, 0x0A, 0x01, 0x00,
        0x00, 0xC6, 0x8F, 0xCE, 0xB6, 0x24, 0x02, 0x00, 0xBD, 0x10, 0xF0, 0xAF,
        0xCF, 0xBE, 0xFF, 0x00, 0xAD, 0xCB, 0xC5, 0x38, 0x99, 0x00, 0x00, 0x00,
        0x42, 0xF5, 0x00, 0x00, 0x00, 0xC7, 0x24, 0x01, 0x00, 0x9D, 0xC9, 0x93,
        0x01, 0xEC, 0xB5, 0xC5, 0x28, 0xDE, 0x03, 0x4A, 0x09, 0x03, 0x0D, 0x0D,
        0x21, 0xDA, 0x21, 0x58, 0x0D, 0x0D, 0x0E, 0x43, 0x06, 0x00, 0xCC, 0x03,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x29, 0xDE, 0x03, 0x56,
        0x01, 0x03, 0x0E, 0x43, 0x06, 0x00, 0x00, 0x01, 0x09, 0x01, 0x04, 0x00,
        0x00, 0xE6, 0x01, 0x0A, 0xB0, 0x01, 0x00, 0x01, 0x00, 0x8E, 0x04, 0x00,
        0x00, 0x00, 0x90, 0x04, 0x00, 0x01, 0x00, 0x96, 0x04, 0x00, 0x02, 0x00,
        0x98, 0x04, 0x00, 0x03, 0x00, 0x9A, 0x04, 0x00, 0x04, 0x00, 0x9C, 0x04,
        0x00, 0x05, 0x00, 0x9E, 0x04, 0x00, 0x06, 0x00, 0xA0, 0x04, 0x00, 0x07,
        0x00, 0xE8, 0x03, 0x00, 0x08, 0x00, 0xC1, 0xC9, 0xC1, 0xCC, 0xC1, 0xC3,
        0x07, 0xB5, 0xC3, 0x08, 0xD1, 0x42, 0xF9, 0x00, 0x00, 0x00, 0xC2, 0x08,
        0x91, 0xC3, 0x08, 0x24, 0x01, 0x00, 0xCA, 0xD1, 0x42, 0xF9, 0x00, 0x00,
        0x00, 0xC2, 0x08, 0x91, 0xC3, 0x08, 0x24, 0x01, 0x00, 0xCB, 0xD1, 0x42,
        0xF9, 0x00, 0x00, 0x00, 0xC2, 0x08, 0x91, 0xC3, 0x08, 0x24, 0x01, 0x00,
        0xCC, 0xC6, 0xB7, 0xA1, 0xC3, 0x04, 0xC6, 0xB8, 0xAD, 0xB9, 0xA0, 0xC7,
        0xB9, 0xA1, 0xAF, 0xC3, 0x05, 0xC7, 0xBD, 0x0F, 0xAD, 0xB7, 0xA0, 0xC8,
        0xBB, 0xA1, 0xAF, 0xC3, 0x06, 0xC8, 0xBD, 0x3F, 0xAD, 0xC3, 0x07, 0x38,
        0x11, 0x01, 0x00, 0x00, 0xC7, 0xEF, 0xEA, 0x09, 0xBD, 0x40, 0xC4, 0x07,
        0xC3, 0x06, 0xEC, 0x0E, 0x38, 0x11, 0x01, 0x00, 0x00, 0xC8, 0xEF, 0xEA,
        0x05, 0xBD, 0x40, 0xC3, 0x07, 0xC5, 0x38, 0xE6, 0x00, 0x00, 0x00, 0x41,
        0xEA, 0x00, 0x00, 0x00, 0x42, 0x12, 0x01, 0x00, 0x00, 0xC2, 0x04, 0x24,
        0x01, 0x00, 0x9D, 0x38, 0xE6, 0x00, 0x00, 0x00, 0x41, 0xEA, 0x00, 0x00,
        0x00, 0x42, 0x12, 0x01, 0x00, 0x00, 0xC2, 0x05, 0x24, 0x01, 0x00, 0x9D,
        0x38, 0xE6, 0x00, 0x00, 0x00, 0x41, 0xEA, 0x00, 0x00, 0x00, 0x42, 0x12,
        0x01, 0x00, 0x00, 0xC2, 0x06, 0x24, 0x01, 0x00, 0x9D, 0x38, 0xE6, 0x00,
        0x00, 0x00, 0x41, 0xEA, 0x00, 0x00, 0x00, 0x42, 0x12, 0x01, 0x00, 0x00,
        0xC2, 0x07, 0x24, 0x01, 0x00, 0x9D, 0xC9, 0xC1, 0xD0, 0xCF, 0xCA, 0xC1,
        0xC4, 0x07, 0xC4, 0x06, 0xC4, 0x05, 0xC3, 0x04, 0xC2, 0x08, 0xD1, 0xE9,
        0xA3, 0x6A, 0x2A, 0xFF, 0xFF, 0xFF, 0xC5, 0x28, 0xDE, 0x03, 0x59, 0x18,
        0x03, 0x0D, 0x0D, 0x12, 0x13, 0x4E, 0x4E, 0x4E, 0x1C, 0x3A, 0x3F, 0x21,
        0x30, 0x21, 0x3A, 0x18, 0x08, 0x6C, 0x6C, 0x6C, 0x71, 0x17, 0x30, 0x35,
        0x0E, 0x43, 0x06, 0x00, 0xCE, 0x03, 0x01, 0x04, 0x01, 0x04, 0x00, 0x00,
        0x84, 0x01, 0x05, 0xD0, 0x03, 0x00, 0x01, 0x00, 0xB0, 0x01, 0x00, 0x00,
        0x00, 0xA6, 0x04, 0x00, 0x01, 0x00, 0xA8, 0x04, 0x00, 0x02, 0x00, 0xAC,
        0x01, 0x00, 0x03, 0x00, 0xD1, 0xE9, 0xB6, 0xA3, 0xEA, 0x0D, 0x38, 0x15,
        0x01, 0x00, 0x00, 0x04, 0xEE, 0x00, 0x00, 0x00, 0xEF, 0x29, 0x38, 0x15,
        0x01, 0x00, 0x00, 0x04, 0x16, 0x01, 0x00, 0x00, 0xD1, 0xB5, 0x47, 0x9D,
        0xEF, 0x0E, 0xD1, 0xB5, 0x47, 0xC9, 0x38, 0xE6, 0x00, 0x00, 0x00, 0x42,
        0xEB, 0x00, 0x00, 0x00, 0xC5, 0x24, 0x01, 0x00, 0xCA, 0x04, 0x17, 0x01,
        0x00, 0x00, 0x11, 0x39, 0x18, 0x01, 0x00, 0x00, 0x0E, 0x38, 0xE3, 0x00,
        0x00, 0x00, 0xC6, 0x38, 0x18, 0x01, 0x00, 0x00, 0xF0, 0xCF, 0xE9, 0xBD,
        0x70, 0xAA, 0xEA, 0x0D, 0x38, 0x15, 0x01, 0x00, 0x00, 0x04, 0xEE, 0x00,
        0x00, 0x00, 0xEF, 0x29, 0x04, 0x19, 0x01, 0x00, 0x00, 0xCC, 0xC7, 0xC8,
        0xA9, 0xEA, 0x0E, 0x38, 0x15, 0x01, 0x00, 0x00, 0x04, 0x1A, 0x01, 0x00,
        0x00, 0xEF, 0x0E, 0x29, 0x38, 0x15, 0x01, 0x00, 0x00, 0x04, 0xEE, 0x00,
        0x00, 0x00, 0xEF, 0x29, 0xDE, 0x03, 0x76, 0x11, 0x03, 0x21, 0x3B, 0x08,
        0x54, 0x17, 0x4F, 0x3F, 0x40, 0x26, 0x3B, 0x09, 0x21, 0x1D, 0x3F, 0x09,
        0x3C
};

static JSContext *JS_NewCustomContext(JSRuntime *rt)
{
  JSContext *ctx = JS_NewContextRaw(rt);
  if (!ctx)
    return NULL;
  JS_AddIntrinsicBaseObjects(ctx);
  JS_AddIntrinsicDate(ctx);
  JS_AddIntrinsicEval(ctx);
  JS_AddIntrinsicStringNormalize(ctx);
  JS_AddIntrinsicRegExp(ctx);
  JS_AddIntrinsicJSON(ctx);
  JS_AddIntrinsicProxy(ctx);
  JS_AddIntrinsicMapSet(ctx);
  JS_AddIntrinsicTypedArrays(ctx);
  JS_AddIntrinsicPromise(ctx);
  JS_AddIntrinsicBigInt(ctx);
  return ctx;
}

int main(int argc, char **argv)
{
  JSRuntime *rt;
  JSContext *ctx;
  rt = JS_NewRuntime();
  js_std_set_worker_new_context_func(JS_NewCustomContext);
  js_std_init_handlers(rt);
  JS_SetModuleLoaderFunc(rt, NULL, js_module_loader, NULL);
  ctx = JS_NewCustomContext(rt);
  js_std_add_helpers(ctx, argc, argv);
  js_std_eval_binary(ctx, qjsc_ctf, qjsc_ctf_size, 0);
  js_std_loop(ctx);
  JS_FreeContext(ctx);
  JS_FreeRuntime(rt);
  return 0;
}

可以使用 js_dump_function_bytecode(s->ctx, b); 让其输出字节码。

字节码：

1
2
3
4
5
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8
9
10
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811
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830
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832
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1016
1017
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1021
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1024
1025
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1038
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1111
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1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
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1234
1235
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1261
1262
0000:  02 3a                    58 atom indexes {
1"long2str"
1"str2long"
1"sdfsfsdf"
1"str2Hex"
1"hex2str"
1"xxxfss"
1"main"
1"args"
1"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
1"_keyStr"
1"dfsfs"
1"scriptArgs"
1"shift"
1"error"
1"./test_encode.js"
1"v"
1"w"
1"vl"
1"sl"
1"i"
1"fromCharCode"
1"substring"
1"s"
1"len"
1"charCodeAt"
1"str"
1"key"
1"k"
1"n"
1"z"
1"y"
1"delta"
1"mx"
1"e"
1"q"
1"sum"
1"p"
1"floor"
1"output"
1"chr1"
1"parseInt"
1"substr"
1"chr2"
1"chr3"
1"enc1"
1"enc2"
1"enc3"
1"enc4"
1"isNaN"
1"charAt"
1"dfsfdsfsd"
1"fwderf"
1"print"
1"your input: "
1"no_thing_is_true"
1"dfdfwf3"
1"05aed0ce441f80b5bc36af4c698509fc6cc3c97146353de5a95c6abea07fd4a7070932d86ac32d628672a59123e5972331db5dffe7057362"
1"yes"
0002:  10 6c 6f 6e 67 32 73 74
       72 10 73 74 72 32 6c 6f
       6e 67 10 73 64 66 73 66
       73 64 66 0e 73 74 72 32
       48 65 78 0e 68 65 78 32
       73 74 72 0c 78 78 78 66
       73 73 08 6d 61 69 6e 08
       61 72 67 73 82 01 41 42
       43 44 45 46 47 48 49 4a
       4b 4c 4d 4e 4f 50 51 52
       53 54 55 56 57 58 59 5a
       61 62 63 64 65 66 67 68
       69 6a 6b 6c 6d 6e 6f 70
       71 72 73 74 75 76 77 78
       79 7a 30 31 32 33 34 35
       36 37 38 39 2b 2f 3d 0e
       5f 6b 65 79 53 74 72 0a
       64 66 73 66 73 14 73 63
       72 69 70 74 41 72 67 73
       0a 73 68 69 66 74 0a 65
       72 72 6f 72 20 2e 2f 74
       65 73 74 5f 65 6e 63 6f
       64 65 2e 6a 73 02 76 02
       77 04 76 6c 04 73 6c 02
       69 18 66 72 6f 6d 43 68
       61 72 43 6f 64 65 12 73
       75 62 73 74 72 69 6e 67
       02 73 06 6c 65 6e 14 63
       68 61 72 43 6f 64 65 41
       74 06 73 74 72 06 6b 65
       79 02 6b 02 6e 02 7a 02
       79 0a 64 65 6c 74 61 04
       6d 78 02 65 02 71 06 73
       75 6d 02 70 0a 66 6c 6f
       6f 72 0c 6f 75 74 70 75
       74 08 63 68 72 31 10 70
       61 72 73 65 49 6e 74 0c
       73 75 62 73 74 72 08 63
       68 72 32 08 63 68 72 33
       08 65 6e 63 31 08 65 6e
       63 32 08 65 6e 63 33 08
       65 6e 63 34 0a 69 73 4e
       61 4e 0c 63 68 61 72 41
       74 12 64 66 73 66 64 73
       66 73 64 0c 66 77 64 65
       72 66 0a 70 72 69 6e 74
       18 79 6f 75 72 20 69 6e
       70 75 74 3a 20 20 6e 6f
       5f 74 68 69 6e 67 5f 69
       73 5f 74 72 75 65 0e 64
       66 64 66 77 66 33 e0 01
       30 35 61 65 64 30 63 65
       34 34 31 66 38 30 62 35
       62 63 33 36 61 66 34 63
       36 39 38 35 30 39 66 63
       36 63 63 33 63 39 37 31
       34 36 33 35 33 64 65 35
       61 39 35 63 36 61 62 65
       61 30 37 66 64 34 61 37
       30 37 30 39 33 32 64 38
       36 61 63 33 32 64 36 32
       38 36 37 32 61 35 39 31
       32 33 65 35 39 37 32 33
       33 31 64 62 35 64 66 66
       65 37 30 35 37 33 36 32
       06 79 65 73              }
020e:  0e                       function {
020f:  00 06 00 a0 01 00 01 00
       03 00 08 e4 01 01          name: "<eval>"
                                  args=0 vars=1 defargs=0 closures=0 cpool=8
                                  stack=3 bclen=228 locals=1
                                  vars {
021d:  a2 01 00 00 00               name: "<ret>"
                                  }
                                  bytecode {
0222:  3f e1 00 00 00 40 3f e2
       00 00 00 40 3f e3 00 00
       00 40 3f e4 00 00 00 40
       3f e5 00 00 00 40 3f e6
       00 00 00 40 3f e7 00 00
       00 40 3f e8 00 00 00 00
       c0 00 40 e1 00 00 00 00
       c0 01 40 e2 00 00 00 00
       c0 02 40 e3 00 00 00 00
       c0 03 40 e4 00 00 00 00
       c0 04 40 e5 00 00 00 00
       c0 05 40 e6 00 00 00 00
       c0 07 40 e7 00 00 00 00
       3e e8 00 00 00 00 38 e6
       00 00 00 04 e9 00 00 00
       15 43 ea 00 00 00 c9 38
       e6 00 00 00 c0 06 15 43
       eb 00 00 00 c9 06 c9 37
       ec 00 00 00 f4 eb 1d 38
       ec 00 00 00 11 39 e8 00
       00 00 c9 38 e8 00 00 00
       42 ed 00 00 00 24 00 00
       c9 ec 25 06 c9 37 4d 00
       00 00 f4 eb 0f 38 4d 00
       00 00 11 39 e8 00 00 00
       c9 ec 0d 04 ee 00 00 00
       11 39 e8 00 00 00 c9 38
       e7 00 00 00 38 e8 00 00
       00 ef cd 28                  at 1, fixup atom: long2str
                                    at 7, fixup atom: str2long
                                    at 13, fixup atom: sdfsfsdf
                                    at 19, fixup atom: str2Hex
                                    at 25, fixup atom: hex2str
                                    at 31, fixup atom: xxxfss
                                    at 37, fixup atom: main
                                    at 43, fixup atom: args
                                    at 51, fixup atom: long2str
                                    at 59, fixup atom: str2long
                                    at 67, fixup atom: sdfsfsdf
                                    at 75, fixup atom: str2Hex
                                    at 83, fixup atom: hex2str
                                    at 91, fixup atom: xxxfss
                                    at 99, fixup atom: main
                                    at 105, fixup atom: args
                                    at 111, fixup atom: xxxfss
                                    at 116, fixup atom: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
                                    at 122, fixup atom: _keyStr
                                    at 128, fixup atom: xxxfss
                                    at 136, fixup atom: dfsfs
                                    at 144, fixup atom: scriptArgs
                                    at 152, fixup atom: scriptArgs
                                    at 158, fixup atom: args
                                    at 164, fixup atom: args
                                    at 169, fixup atom: shift
                                    at 182, fixup atom: arguments
                                    at 190, fixup atom: arguments
                                    at 196, fixup atom: args
                                    at 204, fixup atom: error
                                    at 210, fixup atom: args
                                    at 216, fixup atom: main
                                    at 221, fixup atom: args
                                  }
                                  debug {
0306:  de 03 01 13 f1 00 3e b0
       01 58 00 05 36 00 09 40
       35 3f 49 3f 3f 0d 41         filename: "./test_encode.js"
                                  }
                                  cpool {
031d:  0e                           function {
031e:  43 06 00 c2 03 02 03 02
       09 00 01 6e 05                 name: long2str
                                      args=2 vars=3 defargs=2 closures=0 cpool=1
                                      stack=9 bclen=110 locals=5
                                      vars {
032b:  e0 03 00 01 00                   name: v
0330:  e2 03 00 01 00                   name: w
0335:  e4 03 00 00 00                   name: vl
033a:  e6 03 00 01 00                   name: sl
033f:  e8 03 00 02 00                   name: i
                                      }
                                      bytecode {
0344:  d1 e9 c9 d1 c5 b6 9e 47
       bf 00 ad ca b5 cb c7 c5
       a3 ea 3b d1 c7 71 38 99
       00 00 00 42 f5 00 00 00
       d1 c7 47 be ff 00 ad d1
       c7 47 bd 08 a2 be ff 00
       ad d1 c7 47 bd 10 a2 be
       ff 00 ad d1 c7 47 bd 18
       a2 be ff 00 ad 24 04 00
       49 93 02 ec c2 d2 ea 15
       d1 42 5b 00 00 00 c1 24
       01 00 42 f6 00 00 00 b5
       c6 25 02 00 d1 42 5b 00
       00 00 c1 25 01 00                at 23, fixup atom: String
                                        at 28, fixup atom: fromCharCode
                                        at 82, fixup atom: join
                                        at 91, fixup atom: substring
                                        at 102, fixup atom: join
                                      }
                                      debug {
03b2:  de 03 01 0b 03 12 30 27
       67 35 35 49 17 12 69             filename: "./test_encode.js"
                                      }
                                      cpool {
03c1:  06                               float64 {
03c2:  00 00 e0 ff ff ff ef 41            4.29497e+09
                                        }
                                      }
./test_encode.js:1: function: long2str
  args: v w
  locals:
    0: var vl
    1: var sl
    2: var i
  stack_size: 9
  opcodes:
        get_arg0 0: v
        get_length
        put_loc0 0: vl
        get_arg0 0: v
        get_loc0 0: vl
        push_1 1
        sub
        get_array_el
        push_const8 0: 4294967295
        and
        put_loc1 1: sl
        push_0 0
        put_loc2 2: i
   14:  get_loc2 2: i
        get_loc0 0: vl
        lt
        if_false8 77
        get_arg0 0: v
        get_loc2 2: i
        to_propkey2
        get_var String
        get_field2 fromCharCode
        get_arg0 0: v
        get_loc2 2: i
        get_array_el
        push_i16 255
        and
        get_arg0 0: v
        get_loc2 2: i
        get_array_el
        push_i8 8
        shr
        push_i16 255
        and
        get_arg0 0: v
        get_loc2 2: i
        get_array_el
        push_i8 16
        shr
        push_i16 255
        and
        get_arg0 0: v
        get_loc2 2: i
        get_array_el
        push_i8 24
        shr
        push_i16 255
        and
        call_method 4
        put_array_el
        inc_loc 2: i
        goto8 14
   77:  get_arg1 1: w
        if_false8 100
        get_arg0 0: v
        get_field2 join
        push_empty_string
        call_method 1
        get_field2 substring
        push_0 0
        get_loc1 1: sl
        tail_call_method 2
  100:  get_arg0 0: v
        get_field2 join
        push_empty_string
        tail_call_method 1

                                    }
03ca:  0e                           function {
03cb:  43 06 00 c4 03 02 03 02
       07 00 00 5d 05                 name: str2long
                                      args=2 vars=3 defargs=2 closures=0 cpool=0
                                      stack=7 bclen=93 locals=5
                                      vars {
03d8:  ee 03 00 01 00                   name: s
03dd:  e2 03 00 01 00                   name: w
03e2:  f0 03 00 00 00                   name: len
03e7:  e0 03 00 01 00                   name: v
03ec:  e8 03 00 02 00                   name: i
                                      }
                                      bytecode {
03f1:  d1 e9 c9 26 00 00 ca b5
       cb c7 c5 a3 ea 46 c6 c7
       b7 a1 71 d1 42 f9 00 00
       00 c7 24 01 00 d1 42 f9
       00 00 00 c7 b6 9d 24 01
       00 bd 08 a0 af d1 42 f9
       00 00 00 c7 b7 9d 24 01
       00 bd 10 a0 af d1 42 f9
       00 00 00 c7 b8 9d 24 01
       00 bd 18 a0 af 49 b9 94
       02 ec b7 d2 ea 06 c6 c6
       e9 c5 49 c6 28                   at 21, fixup atom: charCodeAt
                                        at 31, fixup atom: charCodeAt
                                        at 47, fixup atom: charCodeAt
                                        at 63, fixup atom: charCodeAt
                                      }
                                      debug {
044e:  de 03 13 0b 03 12 17 27
       4e 53 53 58 1c 12 1d             filename: "./test_encode.js"
                                      }
./test_encode.js:19: function: str2long
  args: s w
  locals:
    0: var len
    1: var v
    2: var i
  stack_size: 7
  opcodes:
        get_arg0 0: s
        get_length
        put_loc0 0: len
        array_from 0
        put_loc1 1: v
        push_0 0
        put_loc2 2: i
    9:  get_loc2 2: i
        get_loc0 0: len
        lt
        if_false8 83
        get_loc1 1: v
        get_loc2 2: i
        push_2 2
        sar
        to_propkey2
        get_arg0 0: s
        get_field2 charCodeAt
        get_loc2 2: i
        call_method 1
        get_arg0 0: s
        get_field2 charCodeAt
        get_loc2 2: i
        push_1 1
        add
        call_method 1
        push_i8 8
        shl
        or
        get_arg0 0: s
        get_field2 charCodeAt
        get_loc2 2: i
        push_2 2
        add
        call_method 1
        push_i8 16
        shl
        or
        get_arg0 0: s
        get_field2 charCodeAt
        get_loc2 2: i
        push_3 3
        add
        call_method 1
        push_i8 24
        shl
        or
        put_array_el
        push_4 4
        add_loc 2: i
        goto8 9
   83:  get_arg1 1: w
        if_false8 91
        get_loc1 1: v
        get_loc1 1: v
        get_length
        get_loc0 0: len
        put_array_el
   91:  get_loc1 1: v
        return

                                    }
045d:  0e                           function {
045e:  43 06 00 c6 03 02 0b 02
       06 00 04 f8 01 0d              name: sdfsfsdf
                                      args=2 vars=11 defargs=2 closures=0 cpool=4
                                      stack=6 bclen=248 locals=13
                                      vars {
046c:  f4 03 00 01 00                   name: str
0471:  f6 03 00 01 00                   name: key
0476:  e0 03 00 00 00                   name: v
047b:  f8 03 00 01 00                   name: k
0480:  fa 03 00 02 00                   name: n
0485:  fc 03 00 03 00                   name: z
048a:  fe 03 00 04 00                   name: y
048f:  80 04 00 05 00                   name: delta
0494:  82 04 00 06 00                   name: mx
0499:  84 04 00 07 00                   name: e
049e:  86 04 00 08 00                   name: q
04a3:  88 04 00 09 00                   name: sum
04a8:  8a 04 00 0a 00                   name: p
                                      }
                                      bytecode {
04ad:  d1 c1 a9 ea 03 c1 28 38
       e2 00 00 00 d1 0a f0 c9
       38 e2 00 00 00 d2 09 f0
       ca c5 e9 b6 9e cb c5 c7
       47 cc c5 b5 47 c3 04 bf
       00 c3 05 38 9d 00 00 00
       42 06 01 00 00 bb bd 34
       c7 b6 9d 9b 9d 24 01 00
       c3 08 b5 c3 09 c2 08 90
       c3 08 b5 a5 69 9b 00 00
       00 c2 09 c2 05 9d bf 01
       ad c4 09 b7 a2 b8 ad c3
       07 b5 c3 0a c2 0a c7 a3
       ea 43 c5 c2 0a b6 9d 47
       c3 04 c8 ba a2 c2 04 b7
       a0 ae c2 04 b8 a2 c8 b9
       a0 ae 9d c2 09 c2 04 ae
       c6 c2 0a b8 ad c2 07 ae
       47 c8 ae 9d ae c3 06 c5
       c2 0a 71 c5 c2 0a 47 c2
       06 9d bf 02 ad 16 49 cc
       93 0a ec b9 c5 b5 47 c3
       04 c8 ba a2 c2 04 b7 a0
       ae c2 04 b8 a2 c8 b9 a0
       ae 9d c2 09 c2 04 ae c6
       c2 0a b8 ad c2 07 ae 47
       c8 ae 9d ae c3 06 c5 c7
       71 c5 c7 47 c2 06 9d bf
       03 ad 16 49 cc ed 5f ff
       38 e4 00 00 00 38 e1 00
       00 00 c5 09 f0 23 01 00          at 8, fixup atom: str2long
                                        at 17, fixup atom: str2long
                                        at 44, fixup atom: Math
                                        at 49, fixup atom: floor
                                        at 233, fixup atom: str2Hex
                                        at 238, fixup atom: long2str
                                      }
                                      debug {
05a5:  de 03 23 15 03 1c 08 08
       30 30 1d 44 85 3f 35 21
       30 2b bc 58 17 1c bc 4e
       13                               filename: "./test_encode.js"
                                      }
                                      cpool {
05be:  06                               float64 {
05bf:  00 00 20 37 ef c6 e3 41            2.65444e+09
                                        }
05c7:  06                               float64 {
05c8:  00 00 e0 ff ff ff ef 41            4.29497e+09
                                        }
05d0:  06                               float64 {
05d1:  00 00 e0 ff ff ff ef 41            4.29497e+09
                                        }
05d9:  06                               float64 {
05da:  00 00 e0 ff ff ff ef 41            4.29497e+09
                                        }
                                      }
./test_encode.js:35: function: sdfsfsdf
  args: str key
  locals:
    0: var v
    1: var k
    2: var n
    3: var z
    4: var y
    5: var delta
    6: var mx
    7: var e
    8: var q
    9: var sum
   10: var p
  stack_size: 6
  opcodes:
        get_arg0 0: str
        push_empty_string
        eq
        if_false8 7
        push_empty_string
        return
    7:  get_var str2long
        get_arg0 0: str
        push_true
        call2 2
        put_loc0 0: v
        get_var str2long
        get_arg1 1: key
        push_false
        call2 2
        put_loc1 1: k
        get_loc0 0: v
        get_length
        push_1 1
        sub
        put_loc2 2: n
        get_loc0 0: v
        get_loc2 2: n
        get_array_el
        put_loc3 3: z
        get_loc0 0: v
        push_0 0
        get_array_el
        put_loc8 4: y
        push_const8 0: 2654435769
        put_loc8 5: delta
        get_var Math
        get_field2 floor
        push_6 6
        push_i8 52
        get_loc2 2: n
        push_1 1
        add
        div
        add
        call_method 1
        put_loc8 8: q
        push_0 0
        put_loc8 9: sum
   69:  get_loc8 8: q
        post_dec
        put_loc8 8: q
        push_0 0
        gt
        if_false 232
        get_loc8 9: sum
        get_loc8 5: delta
        add
        push_const8 1: 4294967295
        and
        set_loc8 9: sum
        push_2 2
        shr
        push_3 3
        and
        put_loc8 7: e
        push_0 0
        put_loc8 10: p
  100:  get_loc8 10: p
        get_loc2 2: n
        lt
        if_false8 172
        get_loc0 0: v
        get_loc8 10: p
        push_1 1
        add
        get_array_el
        put_loc8 4: y
        get_loc3 3: z
        push_5 5
        shr
        get_loc8 4: y
        push_2 2
        shl
        xor
        get_loc8 4: y
        push_3 3
        shr
        get_loc3 3: z
        push_4 4
        shl
        xor
        add
        get_loc8 9: sum
        get_loc8 4: y
        xor
        get_loc1 1: k
        get_loc8 10: p
        push_3 3
        and
        get_loc8 7: e
        xor
        get_array_el
        get_loc3 3: z
        xor
        add
        xor
        put_loc8 6: mx
        get_loc0 0: v
        get_loc8 10: p
        to_propkey2
        get_loc0 0: v
        get_loc8 10: p
        get_array_el
        get_loc8 6: mx
        add
        push_const8 2: 4294967295
        and
        insert3
        put_array_el
        put_loc3 3: z
        inc_loc 10: p
        goto8 100
  172:  get_loc0 0: v
        push_0 0
        get_array_el
        put_loc8 4: y
        get_loc3 3: z
        push_5 5
        shr
        get_loc8 4: y
        push_2 2
        shl
        xor
        get_loc8 4: y
        push_3 3
        shr
        get_loc3 3: z
        push_4 4
        shl
        xor
        add
        get_loc8 9: sum
        get_loc8 4: y
        xor
        get_loc1 1: k
        get_loc8 10: p
        push_3 3
        and
        get_loc8 7: e
        xor
        get_array_el
        get_loc3 3: z
        xor
        add
        xor
        put_loc8 6: mx
        get_loc0 0: v
        get_loc2 2: n
        to_propkey2
        get_loc0 0: v
        get_loc2 2: n
        get_array_el
        get_loc8 6: mx
        add
        push_const8 3: 4294967295
        and
        insert3
        put_array_el
        put_loc3 3: z
        goto16 69
  232:  get_var str2Hex
        get_var long2str
        get_loc0 0: v
        push_false
        call2 2
        tail_call 1

                                    }
05e2:  0e                           function {
05e3:  43 06 00 c8 03 01 03 01
       04 00 01 32 04                 name: str2Hex
                                      args=1 vars=3 defargs=1 closures=0 cpool=1
                                      stack=4 bclen=50 locals=4
                                      vars {
05f0:  b0 01 00 01 00                   name: input
05f5:  8e 04 00 00 00                   name: output
05fa:  90 04 00 01 00                   name: chr1
05ff:  e8 03 00 02 00                   name: i
                                      }
                                      bytecode {
0604:  c1 c9 c1 ca b5 cb d1 42
       f9 00 00 00 c7 91 cb 24
       01 00 42 37 00 00 00 bd
       10 24 01 00 ce e9 b6 a9
       ea 06 bf 00 c6 9d ca c6
       94 00 c7 d1 e9 a3 eb d7
       c5 28                            at 8, fixup atom: charCodeAt
                                        at 19, fixup atom: toString
                                      }
                                      debug {
0636:  de 03 3e 08 03 0d 0d 0e
       76 35 12 21                      filename: "./test_encode.js"
                                      }
                                      cpool {
0642:  07                               string {
1"0"
0643:  02 30                            }
                                      }
./test_encode.js:62: function: str2Hex
  args: input
  locals:
    0: var output
    1: var chr1
    2: var i
  stack_size: 4
  opcodes:
        push_empty_string
        put_loc0 0: output
        push_empty_string
        put_loc1 1: chr1
        push_0 0
        put_loc2 2: i
    6:  get_arg0 0: input
        get_field2 charCodeAt
        get_loc2 2: i
        post_inc
        put_loc2 2: i
        call_method 1
        get_field2 toString
        push_i8 16
        call_method 1
        set_loc1 1: chr1
        get_length
        push_1 1
        eq
        if_false8 39
        push_const8 0: 1"0"
        get_loc1 1: chr1
        add
        put_loc1 1: chr1
   39:  get_loc1 1: chr1
        add_loc 0: output
        get_loc2 2: i
        get_arg0 0: input
        get_length
        lt
        if_true8 6
        get_loc0 0: output
        return

                                    }
0645:  0e                           function {
0646:  43 06 00 ca 03 01 03 01
       06 00 00 52 04                 name: hex2str
                                      args=1 vars=3 defargs=1 closures=0 cpool=0
                                      stack=6 bclen=82 locals=4
                                      vars {
0653:  b0 01 00 01 00                   name: input
0658:  8e 04 00 00 00                   name: output
065d:  e8 03 00 01 00                   name: i
0662:  f8 03 00 02 00                   name: k
                                      }
                                      bytecode {
0667:  c1 c9 b5 ca c6 d1 e9 a3
       ea 47 38 09 01 00 00 d1
       42 0a 01 00 00 c6 b6 24
       02 00 bd 10 f0 b9 a0 38
       09 01 00 00 d1 42 0a 01
       00 00 c6 8f ce b6 24 02
       00 bd 10 f0 af cf be ff
       00 ad cb c5 38 99 00 00
       00 42 f5 00 00 00 c7 24
       01 00 9d c9 93 01 ec b5
       c5 28                            at 11, fixup atom: parseInt
                                        at 17, fixup atom: substr
                                        at 32, fixup atom: parseInt
                                        at 38, fixup atom: substr
                                        at 61, fixup atom: String
                                        at 66, fixup atom: fromCharCode
                                      }
                                      debug {
06b9:  de 03 4a 09 03 0d 0d 21
       da 21 58 0d 0d                   filename: "./test_encode.js"
                                      }
./test_encode.js:74: function: hex2str
  args: input
  locals:
    0: var output
    1: var i
    2: var k
  stack_size: 6
  opcodes:
        push_empty_string
        put_loc0 0: output
        push_0 0
        put_loc1 1: i
    4:  get_loc1 1: i
        get_arg0 0: input
        get_length
        lt
        if_false8 80
        get_var parseInt
        get_arg0 0: input
        get_field2 substr
        get_loc1 1: i
        push_1 1
        call_method 2
        push_i8 16
        call2 2
        push_4 4
        shl
        get_var parseInt
        get_arg0 0: input
        get_field2 substr
        get_loc1 1: i
        inc
        set_loc1 1: i
        push_1 1
        call_method 2
        push_i8 16
        call2 2
        or
        set_loc2 2: k
        push_i16 255
        and
        put_loc2 2: k
        get_loc0 0: output
        get_var String
        get_field2 fromCharCode
        get_loc2 2: k
        call_method 1
        add
        put_loc0 0: output
        inc_loc 1: i
        goto8 4
   80:  get_loc0 0: output
        return

                                    }
06c6:  0e                           function {
06c7:  43 06 00 cc 03 00 00 00
       00 00 00 01 00                 name: xxxfss
                                      args=0 vars=0 defargs=0 closures=0 cpool=0
                                      stack=0 bclen=1 locals=0
                                      bytecode {
06d4:  29                             }
                                      debug {
06d5:  de 03 56 01 03                   filename: "./test_encode.js"
                                      }
./test_encode.js:86: function: xxxfss
  stack_size: 0
  opcodes:
        return_undef

                                    }
06da:  0e                           function {
06db:  43 06 00 00 01 09 01 04
       00 00 e6 01 0a                 name: "<null>"
                                      args=1 vars=9 defargs=1 closures=0 cpool=0
                                      stack=4 bclen=230 locals=10
                                      vars {
06e8:  b0 01 00 01 00                   name: input
06ed:  8e 04 00 00 00                   name: output
06f2:  90 04 00 01 00                   name: chr1
06f7:  96 04 00 02 00                   name: chr2
06fc:  98 04 00 03 00                   name: chr3
0701:  9a 04 00 04 00                   name: enc1
0706:  9c 04 00 05 00                   name: enc2
070b:  9e 04 00 06 00                   name: enc3
0710:  a0 04 00 07 00                   name: enc4
0715:  e8 03 00 08 00                   name: i
                                      }
                                      bytecode {
071a:  c1 c9 c1 cc c1 c3 07 b5
       c3 08 d1 42 f9 00 00 00
       c2 08 91 c3 08 24 01 00
       ca d1 42 f9 00 00 00 c2
       08 91 c3 08 24 01 00 cb
       d1 42 f9 00 00 00 c2 08
       91 c3 08 24 01 00 cc c6
       b7 a1 c3 04 c6 b8 ad b9
       a0 c7 b9 a1 af c3 05 c7
       bd 0f ad b7 a0 c8 bb a1
       af c3 06 c8 bd 3f ad c3
       07 38 11 01 00 00 c7 ef
       ea 09 bd 40 c4 07 c3 06
       ec 0e 38 11 01 00 00 c8
       ef ea 05 bd 40 c3 07 c5
       38 e6 00 00 00 41 ea 00
       00 00 42 12 01 00 00 c2
       04 24 01 00 9d 38 e6 00
       00 00 41 ea 00 00 00 42
       12 01 00 00 c2 05 24 01
       00 9d 38 e6 00 00 00 41
       ea 00 00 00 42 12 01 00
       00 c2 06 24 01 00 9d 38
       e6 00 00 00 41 ea 00 00
       00 42 12 01 00 00 c2 07
       24 01 00 9d c9 c1 d0 cf
       ca c1 c4 07 c4 06 c4 05
       c3 04 c2 08 d1 e9 a3 6a
       2a ff ff ff c5 28                at 12, fixup atom: charCodeAt
                                        at 27, fixup atom: charCodeAt
                                        at 42, fixup atom: charCodeAt
                                        at 90, fixup atom: isNaN
                                        at 107, fixup atom: isNaN
                                        at 121, fixup atom: xxxfss
                                        at 126, fixup atom: _keyStr
                                        at 131, fixup atom: charAt
                                        at 142, fixup atom: xxxfss
                                        at 147, fixup atom: _keyStr
                                        at 152, fixup atom: charAt
                                        at 163, fixup atom: xxxfss
                                        at 168, fixup atom: _keyStr
                                        at 173, fixup atom: charAt
                                        at 184, fixup atom: xxxfss
                                        at 189, fixup atom: _keyStr
                                        at 194, fixup atom: charAt
                                      }
                                      debug {
0800:  de 03 59 18 03 0d 0d 12
       13 4e 4e 4e 1c 3a 3f 21
       30 21 3a 18 08 6c 6c 6c
       71 17 30 35                      filename: "./test_encode.js"
                                      }
./test_encode.js:89: function: <null>
  args: input
  locals:
    0: var output
    1: var chr1
    2: var chr2
    3: var chr3
    4: var enc1
    5: var enc2
    6: var enc3
    7: var enc4
    8: var i
  stack_size: 4
  opcodes:
        push_empty_string
        put_loc0 0: output
        push_empty_string
        put_loc3 3: chr3
        push_empty_string
        put_loc8 7: enc4
        push_0 0
        put_loc8 8: i
   10:  get_arg0 0: input
        get_field2 charCodeAt
        get_loc8 8: i
        post_inc
        put_loc8 8: i
        call_method 1
        put_loc1 1: chr1
        get_arg0 0: input
        get_field2 charCodeAt
        get_loc8 8: i
        post_inc
        put_loc8 8: i
        call_method 1
        put_loc2 2: chr2
        get_arg0 0: input
        get_field2 charCodeAt
        get_loc8 8: i
        post_inc
        put_loc8 8: i
        call_method 1
        put_loc3 3: chr3
        get_loc1 1: chr1
        push_2 2
        sar
        put_loc8 4: enc1
        get_loc1 1: chr1
        push_3 3
        and
        push_4 4
        shl
        get_loc2 2: chr2
        push_4 4
        sar
        or
        put_loc8 5: enc2
        get_loc2 2: chr2
        push_i8 15
        and
        push_2 2
        shl
        get_loc3 3: chr3
        push_6 6
        sar
        or
        put_loc8 6: enc3
        get_loc3 3: chr3
        push_i8 63
        and
        put_loc8 7: enc4
        get_var isNaN
        get_loc2 2: chr2
        call1 1
        if_false8 106
        push_i8 64
        set_loc8 7: enc4
        put_loc8 6: enc3
        goto8 119
  106:  get_var isNaN
        get_loc3 3: chr3
        call1 1
        if_false8 119
        push_i8 64
        put_loc8 7: enc4
  119:  get_loc0 0: output
        get_var xxxfss
        get_field _keyStr
        get_field2 charAt
        get_loc8 4: enc1
        call_method 1
        add
        get_var xxxfss
        get_field _keyStr
        get_field2 charAt
        get_loc8 5: enc2
        call_method 1
        add
        get_var xxxfss
        get_field _keyStr
        get_field2 charAt
        get_loc8 6: enc3
        call_method 1
        add
        get_var xxxfss
        get_field _keyStr
        get_field2 charAt
        get_loc8 7: enc4
        call_method 1
        add
        put_loc0 0: output
        push_empty_string
        set_loc3 3: chr3
        set_loc2 2: chr2
        put_loc1 1: chr1
        push_empty_string
        set_loc8 7: enc4
        set_loc8 6: enc3
        set_loc8 5: enc2
        put_loc8 4: enc1
        get_loc8 8: i
        get_arg0 0: input
        get_length
        lt
        if_true 10
        get_loc0 0: output
        return

                                    }
081c:  0e                           function {
081d:  43 06 00 ce 03 01 04 01
       04 00 00 84 01 05              name: main
                                      args=1 vars=4 defargs=1 closures=0 cpool=0
                                      stack=4 bclen=132 locals=5
                                      vars {
082b:  d0 03 00 01 00                   name: args
0830:  b0 01 00 00 00                   name: input
0835:  a6 04 00 01 00                   name: dfsfdsfsd
083a:  a8 04 00 02 00                   name: fwderf
083f:  ac 01 00 03 00                   name: target
                                      }
                                      bytecode {
0844:  d1 e9 b6 a3 ea 0d 38 15
       01 00 00 04 ee 00 00 00
       ef 29 38 15 01 00 00 04
       16 01 00 00 d1 b5 47 9d
       ef 0e d1 b5 47 c9 38 e6
       00 00 00 42 eb 00 00 00
       c5 24 01 00 ca 04 17 01
       00 00 11 39 18 01 00 00
       0e 38 e3 00 00 00 c6 38
       18 01 00 00 f0 cf e9 bd
       70 aa ea 0d 38 15 01 00
       00 04 ee 00 00 00 ef 29
       04 19 01 00 00 cc c7 c8
       a9 ea 0e 38 15 01 00 00
       04 1a 01 00 00 ef 0e 29
       38 15 01 00 00 04 ee 00
       00 00 ef 29                      at 7, fixup atom: print
                                        at 12, fixup atom: error
                                        at 19, fixup atom: print
                                        at 24, fixup atom: "your input: "
                                        at 39, fixup atom: xxxfss
                                        at 44, fixup atom: dfsfs
                                        at 54, fixup atom: no_thing_is_true
                                        at 60, fixup atom: dfdfwf3
                                        at 66, fixup atom: sdfsfsdf
                                        at 72, fixup atom: dfdfwf3
                                        at 85, fixup atom: print
                                        at 90, fixup atom: error
                                        at 97, fixup atom: "05aed0ce441f80b5bc36af4c698509fc6cc3c97146353de5a95c6abea07fd4a7070932d86ac32d628672a59123e5972331db5dffe7057362"
                                        at 108, fixup atom: print
                                        at 113, fixup atom: yes
                                        at 121, fixup atom: print
                                        at 126, fixup atom: error
                                      }
                                      debug {
08c8:  de 03 76 11 03 21 3b 08
       54 17 4f 3f 40 26 3b 09
       21 1d 3f 09 3c                   filename: "./test_encode.js"
                                      }
./test_encode.js:118: function: main
  args: args
  locals:
    0: var input
    1: var dfsfdsfsd
    2: var fwderf
    3: var target
  stack_size: 4
  opcodes:
        get_arg0 0: args
        get_length
        push_1 1
        lt
        if_false8 18
        get_var print
        push_atom_value error
        call1 1
        return_undef
   18:  get_var print
        push_atom_value "your input: "
        get_arg0 0: args
        push_0 0
        get_array_el
        add
        call1 1
        drop
        get_arg0 0: args
        push_0 0
        get_array_el
        put_loc0 0: input
        get_var xxxfss
        get_field2 dfsfs
        get_loc0 0: input
        call_method 1
        put_loc1 1: dfsfdsfsd
        push_atom_value no_thing_is_true
        dup
        put_var dfdfwf3
        drop
        get_var sdfsfsdf
        get_loc1 1: dfsfdsfsd
        get_var dfdfwf3
        call2 2
        set_loc2 2: fwderf
        get_length
        push_i8 112
        neq
        if_false8 96
        get_var print
        push_atom_value error
        call1 1
        return_undef
   96:  push_atom_value "05aed0ce441f80b5bc36af4c698509fc6cc3c97146353de5a95c6abea07fd4a7070932d86ac32d628672a59123e5972331db5dffe7057362"
        put_loc3 3: target
        get_loc2 2: fwderf
        get_loc3 3: target
        eq
        if_false8 120
        get_var print
        push_atom_value yes
        call1 1
        drop
        return_undef
  120:  get_var print
        push_atom_value error
        call1 1
        return_undef

                                    }
                                  }
./test_encode.js:1: function: <eval>
  locals:
    0: var <ret>
  stack_size: 3
  opcodes:
        check_define_var long2str,64
        check_define_var str2long,64
        check_define_var sdfsfsdf,64
        check_define_var str2Hex,64
        check_define_var hex2str,64
        check_define_var xxxfss,64
        check_define_var main,64
        check_define_var args,0
        fclosure8 0: [bytecode long2str]
        define_func long2str,0
        fclosure8 1: [bytecode str2long]
        define_func str2long,0
        fclosure8 2: [bytecode sdfsfsdf]
        define_func sdfsfsdf,0
        fclosure8 3: [bytecode str2Hex]
        define_func str2Hex,0
        fclosure8 4: [bytecode hex2str]
        define_func hex2str,0
        fclosure8 5: [bytecode xxxfss]
        define_func xxxfss,0
        fclosure8 7: [bytecode main]
        define_func main,0
        define_var args,0
        get_var xxxfss
        push_atom_value "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
        insert2
        put_field _keyStr
        put_loc0 0: "<ret>"
        get_var xxxfss
        fclosure8 6: [bytecode <null>]
        insert2
        put_field dfsfs
        put_loc0 0: "<ret>"
        undefined
        put_loc0 0: "<ret>"
        get_var_undef scriptArgs
        typeof_is_undefined
        if_true8 179
        get_var scriptArgs
        dup
        put_var args
        put_loc0 0: "<ret>"
        get_var args
        get_field2 shift
        call_method 0
        put_loc0 0: "<ret>"
        goto8 215
  179:  undefined
        put_loc0 0: "<ret>"
        get_var_undef arguments
        typeof_is_undefined
        if_true8 203
        get_var arguments
        dup
        put_var args
        put_loc0 0: "<ret>"
        goto8 215
  203:  push_atom_value error
        dup
        put_var args
        put_loc0 0: "<ret>"
  215:  get_var main
        get_var args
        call1 1
        set_loc0 0: "<ret>"
        return

                                }
error

经过分析可知，输入字符串后，会对该字符串进行TEA加密，key为no_thing_is_true，密文是05aed0ce441f80b5bc36af4c698509fc6cc3c97146353de5a95c6abea07fd4a7070932d86ac32d628672a59123e5972331db5dffe7057362，对其解密即可。