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[原创]记一次独特的android逆向过程
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2023-4-21 11:23 28731
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多年之前的有一天，领导说要逆向一个android app，据说，有些不法分子会使用该软件来从事危害国家安全的事，天下兴亡匹夫有责，为了维护国家安全，尽到每个公民的义务和责任，我积极接下了该任务。
拿过来之后，发现可以重打包。用dex2jar将classes.dex文件转换为jar包，利用jd-gui等分析源码，并尝试搜索decrypt，encrypt，decode，encode等关键字，竟然什么也没有！然后就一脸懵逼不会了，我奉劝给位java开发者，在开发的时候，加解密函数最好不要用decrypt，encrypt等字眼，用了的话，最少要混淆一下，否则，后果会很严重。
虽然咱技术差啥也不会，但是会用百度呀，双击打开iexplorer浏览器，并在百度中搜索"java 网络通信"等字样，关键字之间用空格隔开，在结果中，发现java中的网络功能一般都要使用read,readLine等函数，搜索之，发现以下几个地方比较可疑：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 | public abstract class bj implements bg{ private static final int a = 32; private static final ThreadLocal b = new ThreadLocal() { protected char[] a() { return new char['?']; } }; private static final char[] a(char[] paramArrayOfChar, int paramInt1, int paramInt2) { char[] arrayOfChar = new char[paramInt2]; if (paramInt1 > 0) { System.arraycopy(paramArrayOfChar, 0, arrayOfChar, 0, paramInt1); } return arrayOfChar; } protected static final int b(CharSequence paramCharSequence, int paramInt1, int paramInt2) { if (paramInt1 < paramInt2) { int j = paramInt1 + 1; int i = paramCharSequence.charAt(paramInt1); if ((i < 55296) || (i > 57343)) { return i; } if (i <= 56319) { if (j == paramInt2) { return -i; } char c = paramCharSequence.charAt(j); if (Character.isLowSurrogate(c)) { return Character.toCodePoint(i, c); } throw new IllegalArgumentException("Expected low surrogate but got char '" + c + "' with value " + c + " at index " + j); } throw new IllegalArgumentException("Unexpected low surrogate character '" + i + "' with value " + i + " at index " + (j - 1)); } throw new IndexOutOfBoundsException("Index exceeds specified range"); } protected int a(CharSequence paramCharSequence, int paramInt1, int paramInt2) { if (paramInt1 < paramInt2) { i = b(paramCharSequence, paramInt1, paramInt2); if ((i >= 0) && (a(i) == null)) {} } else { return paramInt1; } if (Character.isSupplementaryCodePoint(i)) {} for (int i = 2;; i = 1) { paramInt1 += i; break; } } public Appendable a(final Appendable paramAppendable) { bi.a(paramAppendable); new Appendable() { int a = -1; char[] b = new char[2]; private void a(char[] paramAnonymousArrayOfChar, int paramAnonymousInt) { int i = 0; while (i < paramAnonymousInt) { paramAppendable.append(paramAnonymousArrayOfChar[i]); i += 1; } } public Appendable append(char paramAnonymousChar) { if (this.a != -1) { if (!Character.isLowSurrogate(paramAnonymousChar)) { throw new IllegalArgumentException("Expected low surrogate character but got '" + paramAnonymousChar + "' with value " + paramAnonymousChar); } arrayOfChar = bj.this.a(Character.toCodePoint((char)this.a, paramAnonymousChar)); if (arrayOfChar != null) { a(arrayOfChar, arrayOfChar.length); } for (;;) { this.a = -1; return this; paramAppendable.append((char)this.a); paramAppendable.append(paramAnonymousChar); } } if (Character.isHighSurrogate(paramAnonymousChar)) { this.a = paramAnonymousChar; return this; } if (Character.isLowSurrogate(paramAnonymousChar)) { throw new IllegalArgumentException("Unexpected low surrogate character '" + paramAnonymousChar + "' with value " + paramAnonymousChar); } char[] arrayOfChar = bj.this.a(paramAnonymousChar); if (arrayOfChar != null) { a(arrayOfChar, arrayOfChar.length); return this; } paramAppendable.append(paramAnonymousChar); return this; } public Appendable append(CharSequence paramAnonymousCharSequence) { return append(paramAnonymousCharSequence, 0, paramAnonymousCharSequence.length()); } public Appendable append(CharSequence paramAnonymousCharSequence, int paramAnonymousInt1, int paramAnonymousInt2) { int i; char[] arrayOfChar; if (paramAnonymousInt1 < paramAnonymousInt2) { if (this.a == -1) { break label257; } i = paramAnonymousInt1 + 1; char c1 = paramAnonymousCharSequence.charAt(paramAnonymousInt1); if (!Character.isLowSurrogate(c1)) { throw new IllegalArgumentException("Expected low surrogate character but got " + c1); } arrayOfChar = bj.this.a(Character.toCodePoint((char)this.a, c1)); if (arrayOfChar == null) { break label146; } a(arrayOfChar, arrayOfChar.length); paramAnonymousInt1 += 1; this.a = -1; } for (;;) { i = bj.this.a(paramAnonymousCharSequence, i, paramAnonymousInt2); if (i > paramAnonymousInt1) { paramAppendable.append(paramAnonymousCharSequence, paramAnonymousInt1, i); } if (i == paramAnonymousInt2) { return this; label146: paramAppendable.append((char)this.a); break; } paramAnonymousInt1 = bj.b(paramAnonymousCharSequence, i, paramAnonymousInt2); if (paramAnonymousInt1 < 0) { this.a = (-paramAnonymousInt1); return this; } arrayOfChar = bj.this.a(paramAnonymousInt1); if (arrayOfChar != null) { a(arrayOfChar, arrayOfChar.length); label208: if (!Character.isSupplementaryCodePoint(paramAnonymousInt1)) { break label252; } } label252: for (paramAnonymousInt1 = 2;; paramAnonymousInt1 = 1) { paramAnonymousInt1 = i + paramAnonymousInt1; i = paramAnonymousInt1; break; int j = Character.toChars(paramAnonymousInt1, this.b, 0); a(this.b, j); break label208; } label257: i = paramAnonymousInt1; } } }; } public String a(String paramString) { int i = paramString.length(); int j = a(paramString, 0, i); if (j == i) { return paramString; } return a(paramString, j); } protected final String a(String paramString, int paramInt) { int n = paramString.length(); Object localObject1 = (char[])b.get(); int m = 0; int i = 0; int k = paramInt; paramInt = i; if (k < n) { int i1 = b(paramString, k, n); if (i1 < 0) { throw new IllegalArgumentException("Trailing high surrogate at end of input"); } char[] arrayOfChar = a(i1); i = paramInt; Object localObject3 = localObject1; if (arrayOfChar != null) { i = k - m; j = paramInt + i + arrayOfChar.length; localObject2 = localObject1; if (localObject1.length < j) { localObject2 = a((char[])localObject1, paramInt, j + (n - k) + 32); } j = paramInt; if (i > 0) { paramString.getChars(m, k, (char[])localObject2, paramInt); j = paramInt + i; } i = j; localObject3 = localObject2; if (arrayOfChar.length > 0) { System.arraycopy(arrayOfChar, 0, localObject2, j, arrayOfChar.length); i = j + arrayOfChar.length; localObject3 = localObject2; } } if (Character.isSupplementaryCodePoint(i1)) {} for (paramInt = 2;; paramInt = 1) { m = paramInt + k; k = a(paramString, m, n); paramInt = i; localObject1 = localObject3; break; } } int j = n - m; i = paramInt; Object localObject2 = localObject1; if (j > 0) { i = j + paramInt; localObject2 = localObject1; if (localObject1.length < i) { localObject2 = a((char[])localObject1, paramInt, i); } paramString.getChars(m, n, (char[])localObject2, paramInt); } return new String((char[])localObject2, 0, i); } protected abstract char[] a(int paramInt);} |
以及如下部分：
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 | import com.gtomato.talkbox.TalkBoxApplication;import java.io.BufferedOutputStream;import java.io.IOException;import java.net.Socket;import java.nio.ByteBuffer;import java.nio.channels.SelectableChannel;import java.nio.channels.SelectionKey;import java.nio.channels.Selector;import java.nio.channels.SocketChannel;import java.util.LinkedList;import java.util.Queue;import java.util.concurrent.ConcurrentLinkedQueue;import java.util.concurrent.atomic.AtomicBoolean;public class fa extends et implements Runnable{ private static final int r = 30000; private static final int s = 10000; private static final int t = 1; private static final int u = 3; private static final int v = 10; private static final short w = 6; private static final short x = 7; private static final byte[] y; private Selector A; private Socket B; private fa.b C; private Thread D; private final Object E = new Object(); private final Object F = new Object(); private volatile boolean G; private AtomicBoolean H = new AtomicBoolean(false); private AtomicBoolean I = new AtomicBoolean(false); private gt J = gt.a(); private TalkBoxApplication K = gx.b; private ByteBuffer L = ByteBuffer.allocate(8192); private byte[] M = null; private SocketChannel z; static { if (!fa.class.desiredAssertionStatus()) {} for (boolean bool = true;; bool = false) { q = bool; byte[] arrayOfByte = new byte[2]; arrayOfByte[0] = 1; y = arrayOfByte; return; } } public fa(gj paramgj) { super(paramgj); } private void a(fl paramfl) { if ((!q) && (paramfl == null)) { throw new AssertionError(); } this.K.a(paramfl.c(), paramfl.a(), paramfl.b(), paramfl.d(), paramfl.e()); } private void a(SelectionKey paramSelectionKey) { boolean bool = true; SocketChannel localSocketChannel = (SocketChannel)paramSelectionKey.channel(); this.L.clear(); int i; try { i = localSocketChannel.read(this.L); if (i == -1) { paramSelectionKey.channel().close(); paramSelectionKey.cancel(); throw new IOException(); } } catch (Exception localException) { paramSelectionKey.cancel(); localSocketChannel.close(); throw localException; } paramSelectionKey = this.J; long l = i; byte[] arrayOfByte2; if (gx.d() == 1) { paramSelectionKey.b(l, bool); paramSelectionKey = (byte[])null; paramSelectionKey = (byte[])null; if (this.M != null) { paramSelectionKey = (byte[])this.M.clone(); } arrayOfByte2 = this.L.array(); if (paramSelectionKey == null) { break label192; } byte[] arrayOfByte1 = new byte[paramSelectionKey.length + i]; System.arraycopy(paramSelectionKey, 0, arrayOfByte1, 0, paramSelectionKey.length); System.arraycopy(arrayOfByte2, 0, arrayOfByte1, paramSelectionKey.length, i); paramSelectionKey = arrayOfByte1; } for (;;) { paramSelectionKey = a(paramSelectionKey, localSocketChannel); if (paramSelectionKey == null) { break label208; } this.M = ((byte[])paramSelectionKey.clone()); return; bool = false; break; label192: paramSelectionKey = new byte[i]; System.arraycopy(arrayOfByte2, 0, paramSelectionKey, 0, i); } label208: this.M = null; } private boolean a(ez paramez) { paramez = paramez.a(); if (paramez != null) {} switch (paramez.a()) { case 3: default: return true; } return false; } private byte[] a(byte[] paramArrayOfByte, SocketChannel paramSocketChannel) { if (paramArrayOfByte == null) { paramSocketChannel = null; } do { return paramSocketChannel; paramSocketChannel = paramArrayOfByte; } while (paramArrayOfByte.length < 2); paramArrayOfByte = (byte[])paramArrayOfByte.clone(); if (paramArrayOfByte.length < 2) {} for (;;) { return paramArrayOfByte; byte[] arrayOfByte = new byte[2]; paramArrayOfByte = (byte[])paramArrayOfByte.clone(); System.arraycopy(paramArrayOfByte, 0, arrayOfByte, 0, 2); if (paramArrayOfByte.length > 2) { paramSocketChannel = new byte[paramArrayOfByte.length - 2]; System.arraycopy(paramArrayOfByte, 2, paramSocketChannel, 0, paramArrayOfByte.length - 2); } int i; for (;;) { i = fn.b(arrayOfByte); if (i != 0) { break label112; } gu.c("[PC] HeartBeat Received..."); this.k = System.currentTimeMillis(); paramArrayOfByte = paramSocketChannel; break; paramSocketChannel = new byte[0]; } label112: if (i == 6) { paramArrayOfByte = fn.a(gx.a(String.valueOf(this.h.c())) + ";2"); arrayOfByte = new byte[paramArrayOfByte.length + 2]; System.arraycopy(fn.c(fn.c(paramArrayOfByte.length)), 0, arrayOfByte, 0, 2); System.arraycopy(paramArrayOfByte, 0, arrayOfByte, 2, paramArrayOfByte.length); this.C.a(arrayOfByte); paramArrayOfByte = paramSocketChannel; break; } paramArrayOfByte = paramSocketChannel; if (i == 7) { break; } if (paramSocketChannel.length >= i) { paramArrayOfByte = new byte[i]; System.arraycopy(paramSocketChannel, 0, paramArrayOfByte, 0, i); this.C.a(y); a(fl.a(paramArrayOfByte)); if (paramSocketChannel.length - i > 0) { paramArrayOfByte = new byte[paramSocketChannel.length - i]; System.arraycopy(paramSocketChannel, i, paramArrayOfByte, 0, paramSocketChannel.length - i); paramArrayOfByte = (byte[])paramArrayOfByte.clone(); break; } paramArrayOfByte = new byte[0]; break; } paramArrayOfByte = new byte[paramSocketChannel.length + 2]; System.arraycopy(arrayOfByte, 0, paramArrayOfByte, 0, 2); if (paramSocketChannel.length > 0) { System.arraycopy(paramSocketChannel, 0, paramArrayOfByte, 2, paramSocketChannel.length); } paramArrayOfByte = (byte[])paramArrayOfByte.clone(); } } /* Error */ private void c(int paramInt) { // Byte code: // 0: iload_1 // 1: iconst_3 // 2: if_icmpgt +29 -> 31 // 5: new 224 java/lang/StringBuilder // 8: dup // 9: ldc_w 282 // 12: invokespecial 245 java/lang/StringBuilder:<init> (Ljava/lang/String;)V // 15: iload_1 // 16: invokevirtual 285 java/lang/StringBuilder:append (I)Ljava/lang/StringBuilder; // 19: ldc_w 287 // 22: invokevirtual 251 java/lang/StringBuilder:append (Ljava/lang/String;)Ljava/lang/StringBuilder; // 25: invokevirtual 254 java/lang/StringBuilder:toString ()Ljava/lang/String; // 28: invokestatic 215 gu:c (Ljava/lang/String;)V // 31: aload_0 // 32: getfield 289 fa:G Z // 35: ifeq +64 -> 99 // 38: aload_0 // 39: invokespecial 292 fa:n ()V // 42: iload_1 // 43: iconst_3 // 44: if_icmple +71 -> 115 // 47: aload_0 // 48: monitorenter // 49: aload_0 // 50: getfield 289 fa:G Z // 53: ifeq +25 -> 78 // 56: aload_0 // 57: getfield 97 fa:H Ljava/util/concurrent/atomic/AtomicBoolean; // 60: iconst_0 // 61: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 64: aload_0 // 65: getfield 99 fa:I Ljava/util/concurrent/atomic/AtomicBoolean; // 68: iconst_0 // 69: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 72: aload_0 // 73: iconst_0 // 74: aconst_null // 75: invokevirtual 298 fa:a (ILey;)V // 78: aload_0 // 79: monitorexit // 80: aload_0 // 81: getfield 78 fa:E Ljava/lang/Object; // 84: astore 4 // 86: aload 4 // 88: monitorenter // 89: aload_0 // 90: getfield 78 fa:E Ljava/lang/Object; // 93: invokevirtual 301 java/lang/Object:notify ()V // 96: aload 4 // 98: monitorexit // 99: return // 100: astore 4 // 102: aload_0 // 103: monitorexit // 104: aload 4 // 106: athrow // 107: astore 5 // 109: aload 4 // 111: monitorexit // 112: aload 5 // 114: athrow // 115: aload_0 // 116: monitorenter // 117: aload_0 // 118: getfield 289 fa:G Z // 121: ifeq +9 -> 130 // 124: aload_0 // 125: iconst_2 // 126: aconst_null // 127: invokevirtual 298 fa:a (ILey;)V // 130: aload_0 // 131: monitorexit // 132: iload_1 // 133: sipush 5000 // 136: imul // 137: i2l // 138: lstore_2 // 139: lload_2 // 140: invokestatic 307 java/lang/Thread:sleep (J)V // 143: aload_0 // 144: getfield 289 fa:G Z // 147: ifeq -48 -> 99 // 150: aload_0 // 151: invokespecial 310 fa:l ()V // 154: aload_0 // 155: getfield 289 fa:G Z // 158: ifeq -59 -> 99 // 161: new 224 java/lang/StringBuilder // 164: dup // 165: ldc_w 312 // 168: invokespecial 245 java/lang/StringBuilder:<init> (Ljava/lang/String;)V // 171: aload_0 // 172: getfield 115 fa:B Ljava/net/Socket; // 175: invokevirtual 318 java/net/Socket:getInetAddress ()Ljava/net/InetAddress; // 178: invokevirtual 321 java/lang/StringBuilder:append (Ljava/lang/Object;)Ljava/lang/StringBuilder; // 181: ldc_w 323 // 184: invokevirtual 251 java/lang/StringBuilder:append (Ljava/lang/String;)Ljava/lang/StringBuilder; // 187: aload_0 // 188: getfield 115 fa:B Ljava/net/Socket; // 191: invokevirtual 326 java/net/Socket:getPort ()I // 194: invokevirtual 285 java/lang/StringBuilder:append (I)Ljava/lang/StringBuilder; // 197: invokevirtual 254 java/lang/StringBuilder:toString ()Ljava/lang/String; // 200: invokestatic 215 gu:c (Ljava/lang/String;)V // 203: aload_0 // 204: ldc_w 327 // 207: invokevirtual 329 fa:b (I)V // 210: aload_0 // 211: getfield 265 fa:C Lfa$b; // 214: invokevirtual 331 fa$b:b ()Z // 217: pop // 218: aload_0 // 219: aconst_null // 220: putfield 90 fa:M [B // 223: aload_0 // 224: getfield 88 fa:L Ljava/nio/ByteBuffer; // 227: invokevirtual 156 java/nio/ByteBuffer:clear ()Ljava/nio/Buffer; // 230: pop // 231: aload_0 // 232: getfield 276 fa:z Ljava/nio/channels/SocketChannel; // 235: aload_0 // 236: getfield 333 fa:A Ljava/nio/channels/Selector; // 239: iconst_1 // 240: invokevirtual 337 java/nio/channels/SocketChannel:register (Ljava/nio/channels/Selector;I)Ljava/nio/channels/SelectionKey; // 243: pop // 244: aload_0 // 245: monitorenter // 246: aload_0 // 247: getfield 289 fa:G Z // 250: ifeq +25 -> 275 // 253: aload_0 // 254: getfield 97 fa:H Ljava/util/concurrent/atomic/AtomicBoolean; // 257: iconst_0 // 258: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 261: aload_0 // 262: getfield 99 fa:I Ljava/util/concurrent/atomic/AtomicBoolean; // 265: iconst_0 // 266: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 269: aload_0 // 270: iconst_3 // 271: aconst_null // 272: invokevirtual 298 fa:a (ILey;)V // 275: aload_0 // 276: monitorexit // 277: return // 278: astore 4 // 280: aload_0 // 281: monitorexit // 282: aload 4 // 284: athrow // 285: astore 4 // 287: aload_0 // 288: aload 4 // 290: invokespecial 339 fa:a (Lez;)Z // 293: ifeq +18 -> 311 // 296: aload_0 // 297: iload_1 // 298: iconst_1 // 299: iadd // 300: invokespecial 341 fa:c (I)V // 303: return // 304: astore 4 // 306: aload_0 // 307: monitorexit // 308: aload 4 // 310: athrow // 311: aload_0 // 312: aload 4 // 314: invokevirtual 200 ez:a ()Ley; // 317: invokevirtual 344 fa:a (Ley;)V // 320: return // 321: astore 4 // 323: invokestatic 345 gx:b ()Z // 326: ifeq +11 -> 337 // 329: aload_0 // 330: iload_1 // 331: iconst_1 // 332: iadd // 333: invokespecial 341 fa:c (I)V // 336: return // 337: aload_0 // 338: invokevirtual 348 fa:i ()V // 341: return // 342: astore 4 // 344: goto -201 -> 143 // Local variable table: // start length slot name signature // 0 347 0 this fa // 0 347 1 paramInt int // 138 2 2 l long // 84 13 4 localObject1 Object // 100 10 4 localObject2 Object // 278 5 4 localObject3 Object // 285 4 4 localez ez // 304 9 4 localObject4 Object // 321 1 4 localException Exception // 342 1 4 localInterruptedException InterruptedException // 107 6 5 localObject5 Object // Exception table: // from to target type // 49 78 100 finally // 78 80 100 finally // 102 104 100 finally // 89 99 107 finally // 109 112 107 finally // 246 275 278 finally // 275 277 278 finally // 280 282 278 finally // 150 246 285 ez // 282 285 285 ez // 117 130 304 finally // 130 132 304 finally // 306 308 304 finally // 150 246 321 java/lang/Exception // 282 285 321 java/lang/Exception // 139 143 342 java/lang/InterruptedException } private void l() { System.setProperty("java.net.preferIPv4Stack", "true"); System.setProperty("java.net.preferIPv6Addresses", "false"); if (this.A != null) {} try { if (this.A.isOpen()) { this.A.close(); } this.A = Selector.open(); if (this.z != null) {} try { this.z.close(); this.z = SocketChannel.open(); de localde; if (this.G) { if (!gx.b()) { break label163; } localde = dd.a(gx.a(String.valueOf(this.h.c()))); if (localde.e()) { a(localde.a().replace("http://", ""), localde.b()); } } else { if (this.G) { break label185; } return; } this.i = null; throw new ez(new ey(3, localde.f())); label163: gu.d("No network connection. Please check and reconnect."); throw new ez(new ey(2)); label185: this.z.connect(this.i); this.z.configureBlocking(false); this.B = this.z.socket(); this.C = new fa.b(new BufferedOutputStream(this.B.getOutputStream())); this.C.start(); return; } catch (Exception localException1) { for (;;) {} } } catch (Exception localException2) { for (;;) {} } } private void m() { if (gx.b()) { try { if (!this.G) { return; } if (this.H.get()) { return; } } finally {} this.H.set(true); c(1); return; } a(new ey(2)); } private void n() { gu.c("stop main network connection"); f(); if (this.C != null) { this.C.a(); this.C = null; } if ((gx.l() >= 8) && (this.A != null)) {} try { this.A.close(); } catch (Exception localException1) { for (;;) { gu.d("Error in closing socketSelector"); localException1.printStackTrace(); this.A = null; } } finally { this.A = null; } if (this.B != null) {} try { this.B.close(); } catch (Exception localException2) { for (;;) { gu.d("Error in closing socket"); localException2.printStackTrace(); this.B = null; } } finally { this.B = null; } if (this.z != null) {} try { this.z.close(); SelectionKey localSelectionKey = this.z.keyFor(this.A); if (localSelectionKey != null) { localSelectionKey.cancel(); } } catch (Exception localException3) { for (;;) { gu.d("Error in closing socketChannel"); localException3.printStackTrace(); this.z = null; } } finally { this.z = null; } this.j.clear(); a(0, null); } /* Error */ public void a(ey arg1) { // Byte code: // 0: aload_0 // 1: monitorenter // 2: aload_0 // 3: getfield 289 fa:G Z // 6: istore_2 // 7: iload_2 // 8: ifne +6 -> 14 // 11: aload_0 // 12: monitorexit // 13: return // 14: aload_0 // 15: iconst_0 // 16: putfield 289 fa:G Z // 19: aload_0 // 20: getfield 97 fa:H Ljava/util/concurrent/atomic/AtomicBoolean; // 23: iconst_0 // 24: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 27: aload_0 // 28: getfield 99 fa:I Ljava/util/concurrent/atomic/AtomicBoolean; // 31: iconst_0 // 32: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 35: aload_0 // 36: iconst_0 // 37: aload_1 // 38: invokevirtual 298 fa:a (ILey;)V // 41: aload_0 // 42: getfield 479 fa:D Ljava/lang/Thread; // 45: ifnull +26 -> 71 // 48: aload_0 // 49: getfield 479 fa:D Ljava/lang/Thread; // 52: invokevirtual 482 java/lang/Thread:interrupt ()V // 55: aload_0 // 56: getfield 78 fa:E Ljava/lang/Object; // 59: astore_1 // 60: aload_1 // 61: monitorenter // 62: aload_0 // 63: getfield 78 fa:E Ljava/lang/Object; // 66: invokevirtual 301 java/lang/Object:notify ()V // 69: aload_1 // 70: monitorexit // 71: ldc_w 484 // 74: invokestatic 215 gu:c (Ljava/lang/String;)V // 77: goto -66 -> 11 // 80: astore_1 // 81: aload_0 // 82: monitorexit // 83: aload_1 // 84: athrow // 85: astore_3 // 86: aload_1 // 87: monitorexit // 88: aload_3 // 89: athrow // Local variable table: // start length slot name signature // 0 90 0 this fa // 6 2 2 bool boolean // 85 4 3 localObject Object // Exception table: // from to target type // 2 7 80 finally // 14 62 80 finally // 71 77 80 finally // 88 90 80 finally // 62 71 85 finally // 86 88 85 finally } public void g() { try { if ((this.D != null) && (!this.D.isInterrupted())) { return; } if (this.H.get()) { return; } } finally {} this.H.set(true); synchronized (this.F) { Thread localThread = this.D; if (localThread != null) {} try { this.F.wait(); this.D = null; try { this.I.set(false); a(2, null); this.G = true; this.D = new Thread(this); this.D.start(); return; } finally {} } catch (InterruptedException localInterruptedException) { for (;;) { localInterruptedException.printStackTrace(); } } } } /* Error */ public void h() { // Byte code: // 0: aload_0 // 1: monitorenter // 2: aload_0 // 3: getfield 97 fa:H Ljava/util/concurrent/atomic/AtomicBoolean; // 6: invokevirtual 447 java/util/concurrent/atomic/AtomicBoolean:get ()Z // 9: ifeq +6 -> 15 // 12: aload_0 // 13: monitorexit // 14: return // 15: aload_0 // 16: getfield 479 fa:D Ljava/lang/Thread; // 19: ifnull +17 -> 36 // 22: aload_0 // 23: getfield 479 fa:D Ljava/lang/Thread; // 26: invokevirtual 488 java/lang/Thread:isInterrupted ()Z // 29: ifne +7 -> 36 // 32: aload_0 // 33: invokevirtual 348 fa:i ()V // 36: aload_0 // 37: getfield 97 fa:H Ljava/util/concurrent/atomic/AtomicBoolean; // 40: iconst_1 // 41: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 44: aload_0 // 45: monitorexit // 46: aload_0 // 47: getfield 80 fa:F Ljava/lang/Object; // 50: astore_1 // 51: aload_1 // 52: monitorenter // 53: aload_0 // 54: getfield 479 fa:D Ljava/lang/Thread; // 57: astore_2 // 58: aload_2 // 59: ifnull +10 -> 69 // 62: aload_0 // 63: getfield 80 fa:F Ljava/lang/Object; // 66: invokevirtual 491 java/lang/Object:wait ()V // 69: aload_0 // 70: aconst_null // 71: putfield 479 fa:D Ljava/lang/Thread; // 74: aload_1 // 75: monitorexit // 76: aload_0 // 77: monitorenter // 78: aload_0 // 79: getfield 99 fa:I Ljava/util/concurrent/atomic/AtomicBoolean; // 82: iconst_0 // 83: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 86: aload_0 // 87: iconst_2 // 88: aconst_null // 89: invokevirtual 298 fa:a (ILey;)V // 92: aload_0 // 93: iconst_1 // 94: putfield 289 fa:G Z // 97: aload_0 // 98: new 303 java/lang/Thread // 101: dup // 102: aload_0 // 103: invokespecial 494 java/lang/Thread:<init> (Ljava/lang/Runnable;)V // 106: putfield 479 fa:D Ljava/lang/Thread; // 109: aload_0 // 110: getfield 479 fa:D Ljava/lang/Thread; // 113: invokevirtual 495 java/lang/Thread:start ()V // 116: ldc_w 498 // 119: invokestatic 215 gu:c (Ljava/lang/String;)V // 122: aload_0 // 123: monitorexit // 124: return // 125: astore_1 // 126: aload_0 // 127: monitorexit // 128: aload_1 // 129: athrow // 130: astore_1 // 131: aload_0 // 132: monitorexit // 133: aload_1 // 134: athrow // 135: astore_2 // 136: aload_2 // 137: invokevirtual 496 java/lang/InterruptedException:printStackTrace ()V // 140: goto -71 -> 69 // 143: astore_2 // 144: aload_1 // 145: monitorexit // 146: aload_2 // 147: athrow // Local variable table: // start length slot name signature // 0 148 0 this fa // 125 4 1 localObject2 Object // 130 15 1 localObject3 Object // 57 2 2 localThread Thread // 135 2 2 localInterruptedException InterruptedException // 143 4 2 localObject4 Object // Exception table: // from to target type // 78 124 125 finally // 126 128 125 finally // 2 14 130 finally // 15 36 130 finally // 36 46 130 finally // 131 133 130 finally // 62 69 135 java/lang/InterruptedException // 53 58 143 finally // 62 69 143 finally // 69 76 143 finally // 136 140 143 finally // 144 146 143 finally } public void i() { try { a(null); return; } finally { localObject = finally; throw ((Throwable)localObject); } } protected void j() { gu.c("Heart beat timeout. Close and reconnect."); gu.f("Push connection heart beat timeout"); if (this.G) { m(); } } public boolean k() { boolean bool = false; for (;;) { try { int i = this.e; if (i != 3) { return bool; } if (this.k != 0L) { if (System.currentTimeMillis() - this.k > 600000L) { j(); } } else { this.k = System.currentTimeMillis(); } } finally {} if (this.C != null) { bool = this.C.b(); } } } /* Error */ public void run() { // Byte code: // 0: aload_0 // 1: invokespecial 310 fa:l ()V // 4: aload_0 // 5: getfield 289 fa:G Z // 8: ifeq +119 -> 127 // 11: new 224 java/lang/StringBuilder // 14: dup // 15: ldc_w 312 // 18: invokespecial 245 java/lang/StringBuilder:<init> (Ljava/lang/String;)V // 21: aload_0 // 22: getfield 115 fa:B Ljava/net/Socket; // 25: invokevirtual 318 java/net/Socket:getInetAddress ()Ljava/net/InetAddress; // 28: invokevirtual 321 java/lang/StringBuilder:append (Ljava/lang/Object;)Ljava/lang/StringBuilder; // 31: ldc_w 323 // 34: invokevirtual 251 java/lang/StringBuilder:append (Ljava/lang/String;)Ljava/lang/StringBuilder; // 37: aload_0 // 38: getfield 115 fa:B Ljava/net/Socket; // 41: invokevirtual 326 java/net/Socket:getPort ()I // 44: invokevirtual 285 java/lang/StringBuilder:append (I)Ljava/lang/StringBuilder; // 47: invokevirtual 254 java/lang/StringBuilder:toString ()Ljava/lang/String; // 50: invokestatic 215 gu:c (Ljava/lang/String;)V // 53: aload_0 // 54: ldc_w 327 // 57: invokevirtual 329 fa:b (I)V // 60: aload_0 // 61: getfield 265 fa:C Lfa$b; // 64: invokevirtual 331 fa$b:b ()Z // 67: pop // 68: aload_0 // 69: aconst_null // 70: putfield 90 fa:M [B // 73: aload_0 // 74: getfield 88 fa:L Ljava/nio/ByteBuffer; // 77: invokevirtual 156 java/nio/ByteBuffer:clear ()Ljava/nio/Buffer; // 80: pop // 81: aload_0 // 82: getfield 276 fa:z Ljava/nio/channels/SocketChannel; // 85: aload_0 // 86: getfield 333 fa:A Ljava/nio/channels/Selector; // 89: iconst_1 // 90: invokevirtual 337 java/nio/channels/SocketChannel:register (Ljava/nio/channels/Selector;I)Ljava/nio/channels/SelectionKey; // 93: pop // 94: aload_0 // 95: monitorenter // 96: aload_0 // 97: getfield 289 fa:G Z // 100: ifeq +25 -> 125 // 103: aload_0 // 104: getfield 97 fa:H Ljava/util/concurrent/atomic/AtomicBoolean; // 107: iconst_0 // 108: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 111: aload_0 // 112: getfield 99 fa:I Ljava/util/concurrent/atomic/AtomicBoolean; // 115: iconst_0 // 116: invokevirtual 295 java/util/concurrent/atomic/AtomicBoolean:set (Z)V // 119: aload_0 // 120: iconst_3 // 121: aconst_null // 122: invokevirtual 298 fa:a (ILey;)V // 125: aload_0 // 126: monitorexit // 127: iconst_0 // 128: istore_2 // 129: aload_0 // 130: getfield 289 fa:G Z // 133: ifne +99 -> 232 // 136: aload_0 // 137: getfield 80 fa:F Ljava/lang/Object; // 140: astore 4 // 142: aload 4 // 144: monitorenter // 145: aload_0 // 146: invokespecial 292 fa:n ()V // 149: aload_0 // 150: aconst_null // 151: putfield 479 fa:D Ljava/lang/Thread; // 154: aload_0 // 155: getfield 80 fa:F Ljava/lang/Object; // 158: invokevirtual 514 java/lang/Object:notifyAll ()V // 161: aload 4 // 163: monitorexit // 164: return // 165: astore 4 // 167: aload_0 // 168: monitorexit // 169: aload 4 // 171: athrow // 172: astore 4 // 174: invokestatic 345 gx:b ()Z // 177: ifeq +20 -> 197 // 180: aload_0 // 181: aload 4 // 183: invokespecial 339 fa:a (Lez;)Z // 186: ifeq +11 -> 197 // 189: aload_0 // 190: iconst_1 // 191: invokespecial 341 fa:c (I)V // 194: goto -67 -> 127 // 197: aload_0 // 198: aload 4 // 200: invokevirtual 200 ez:a ()Ley; // 203: invokevirtual 344 fa:a (Ley;)V // 206: goto -79 -> 127 // 209: astore 4 // 211: invokestatic 345 gx:b ()Z // 214: ifeq +11 -> 225 // 217: aload_0 // 218: iconst_1 // 219: invokespecial 341 fa:c (I)V // 222: goto -95 -> 127 // 225: aload_0 // 226: invokevirtual 348 fa:i ()V // 229: goto -102 -> 127 // 232: iload_2 // 233: istore_1 // 234: aload_0 // 235: getfield 99 fa:I Ljava/util/concurrent/atomic/AtomicBoolean; // 238: invokevirtual 447 java/util/concurrent/atomic/AtomicBoolean:get ()Z // 241: ifne +62 -> 303 // 244: iload_2 // 245: istore_1 // 246: aload_0 // 247: getfield 333 fa:A Ljava/nio/channels/Selector; // 250: invokevirtual 517 java/nio/channels/Selector:select ()I // 253: istore_3 // 254: iload_3 // 255: ifne +138 -> 393 // 258: iload_2 // 259: iconst_1 // 260: iadd // 261: istore_2 // 262: iload_2 // 263: istore_1 // 264: iload_2 // 265: bipush 10 // 267: if_icmple +36 -> 303 // 270: aload_0 // 271: getfield 333 fa:A Ljava/nio/channels/Selector; // 274: invokevirtual 370 java/nio/channels/Selector:close ()V // 277: iload_2 // 278: istore_1 // 279: aload_0 // 280: invokestatic 374 java/nio/channels/Selector:open ()Ljava/nio/channels/Selector; // 283: putfield 333 fa:A Ljava/nio/channels/Selector; // 286: iload_2 // 287: istore_1 // 288: aload_0 // 289: getfield 276 fa:z Ljava/nio/channels/SocketChannel; // 292: aload_0 // 293: getfield 333 fa:A Ljava/nio/channels/Selector; // 296: iconst_1 // 297: invokevirtual 337 java/nio/channels/SocketChannel:register (Ljava/nio/channels/Selector;I)Ljava/nio/channels/SelectionKey; // 300: pop // 301: iconst_0 // 302: istore_1 // 303: iload_1 // 304: istore_2 // 305: aload_0 // 306: getfield 99 fa:I Ljava/util/concurrent/atomic/AtomicBoolean; // 309: invokevirtual 447 java/util/concurrent/atomic/AtomicBoolean:get ()Z // 312: ifeq -183 -> 129 // 315: iload_1 // 316: istore_2 // 317: aload_0 // 318: getfield 289 fa:G Z // 321: ifeq -192 -> 129 // 324: aload_0 // 325: getfield 78 fa:E Ljava/lang/Object; // 328: astore 4 // 330: aload 4 // 332: monitorenter // 333: aload_0 // 334: getfield 78 fa:E Ljava/lang/Object; // 337: ldc2_w 518 // 340: invokevirtual 521 java/lang/Object:wait (J)V // 343: aload 4 // 345: monitorexit // 346: aload_0 // 347: getfield 289 fa:G Z // 350: ifeq -47 -> 303 // 353: aload_0 // 354: invokespecial 352 fa:m ()V // 357: goto -54 -> 303 // 360: astore 4 // 362: iload_2 // 363: istore_1 // 364: aload 4 // 366: invokevirtual 473 java/lang/Exception:printStackTrace ()V // 369: goto -92 -> 277 // 372: astore 4 // 374: aload 4 // 376: invokevirtual 473 java/lang/Exception:printStackTrace ()V // 379: aload_0 // 380: getfield 289 fa:G Z // 383: ifeq -247 -> 136 // 386: aload_0 // 387: invokespecial 352 fa:m ()V // 390: goto -87 -> 303 // 393: aload_0 // 394: getfield 333 fa:A Ljava/nio/channels/Selector; // 397: invokevirtual 525 java/nio/channels/Selector:selectedKeys ()Ljava/util/Set; // 400: invokeinterface 531 1 0 // 405: astore 4 // 407: aload 4 // 409: invokeinterface 536 1 0 // 414: ifeq +99 -> 513 // 417: aload_0 // 418: getfield 289 fa:G Z // 421: ifne +8 -> 429 // 424: iconst_0 // 425: istore_1 // 426: goto -123 -> 303 // 429: aload 4 // 431: invokeinterface 539 1 0 // 436: checkcast 146 java/nio/channels/SelectionKey // 439: astore 5 // 441: aload 4 // 443: invokeinterface 542 1 0 // 448: aload 5 // 450: invokevirtual 545 java/nio/channels/SelectionKey:isValid ()Z // 453: ifeq -46 -> 407 // 456: aload 5 // 458: invokevirtual 548 java/nio/channels/SelectionKey:isReadable ()Z // 461: ifeq -54 -> 407 // 464: aload_0 // 465: getfield 289 fa:G Z // 468: ifeq -61 -> 407 // 471: aload_0 // 472: aload 5 // 474: invokespecial 550 fa:a (Ljava/nio/channels/SelectionKey;)V // 477: goto -70 -> 407 // 480: astore 4 // 482: iconst_0 // 483: istore_1 // 484: goto -110 -> 374 // 487: astore 5 // 489: aload 5 // 491: invokevirtual 496 java/lang/InterruptedException:printStackTrace ()V // 494: goto -151 -> 343 // 497: astore 5 // 499: aload 4 // 501: monitorexit // 502: aload 5 // 504: athrow // 505: astore 5 // 507: aload 4 // 509: monitorexit // 510: aload 5 // 512: athrow // 513: iconst_0 // 514: istore_1 // 515: goto -212 -> 303 // Local variable table: // start length slot name signature // 0 518 0 this fa // 233 282 1 i int // 128 235 2 j int // 253 2 3 k int // 140 22 4 localObject1 Object // 165 5 4 localObject2 Object // 172 27 4 localez ez // 209 1 4 localException1 Exception // 360 5 4 localException2 Exception // 372 3 4 localException3 Exception // 405 37 4 localIterator java.util.Iterator // 480 28 4 localException4 Exception // 439 34 5 localSelectionKey SelectionKey // 487 3 5 localInterruptedException InterruptedException // 497 6 5 localObject4 Object // 505 6 5 localObject5 Object // Exception table: // from to target type // 96 125 165 finally // 125 127 165 finally // 167 169 165 finally // 0 96 172 ez // 169 172 172 ez // 0 96 209 java/lang/Exception // 169 172 209 java/lang/Exception // 270 277 360 java/lang/Exception // 246 254 372 java/lang/Exception // 279 286 372 java/lang/Exception // 288 301 372 java/lang/Exception // 364 369 372 java/lang/Exception // 393 407 480 java/lang/Exception // 407 424 480 java/lang/Exception // 429 477 480 java/lang/Exception // 333 343 487 java/lang/InterruptedException // 333 343 497 finally // 343 346 497 finally // 489 494 497 finally // 499 502 497 finally // 145 164 505 finally // 507 510 505 finally } class a extends Thread { private Queue c = new LinkedList(); private volatile boolean d = true; static { if (!fa.class.desiredAssertionStatus()) {} for (boolean bool = true;; bool = false) { b = bool; return; } } private a() {} public void a() { this.d = false; interrupt(); for (;;) { synchronized (this.c) { this.c.notifyAll(); if (this.c.isEmpty()) { return; } } ??? = (fc)this.c.poll(); fa.this.h.b((fc)???); } } public void a(fc paramfc) { if ((!b) && (paramfc == null)) { throw new AssertionError(); } synchronized (this.c) { this.c.add(paramfc); this.c.notifyAll(); return; } } public void run() { for (;;) { if (!this.d) { return; } synchronized (this.c) { boolean bool = this.c.isEmpty(); if (!bool) {} } try { this.c.wait(); if (this.c.isEmpty()) { continue; localObject = finally; throw ((Throwable)localObject); } } catch (InterruptedException localInterruptedException) { while (localInterruptedException.getMessage() == null) {} gu.d(localInterruptedException.getMessage()); return; } fc localfc = (fc)this.c.poll(); fa.this.h.b(localfc); } } } class b extends Thread { private volatile boolean c; private BufferedOutputStream d; private ConcurrentLinkedQueue e = new ConcurrentLinkedQueue(); static { if (!fa.class.desiredAssertionStatus()) {} for (boolean bool = true;; bool = false) { b = bool; return; } } public b(BufferedOutputStream paramBufferedOutputStream) { if ((!b) && (fa.a(fa.this) == null)) { throw new AssertionError(); } this.c = true; this.d = paramBufferedOutputStream; } private boolean b(byte[] paramArrayOfByte) { if ((!b) && (paramArrayOfByte == null)) { throw new AssertionError(); } if (!this.c) { return false; } for (;;) { synchronized (fa.b(fa.this)) { try { Object localObject = ByteBuffer.wrap(paramArrayOfByte); if ((!((ByteBuffer)localObject).hasRemaining()) || (!this.c)) { if (!((ByteBuffer)localObject).hasRemaining()) { localObject = fa.c(fa.this); long l = paramArrayOfByte.length; if (gx.d() != 1) { break label160; } bool = true; ((gt)localObject).a(l, bool); } return true; } fa.b(fa.this).write((ByteBuffer)localObject); continue; gu.d(paramArrayOfByte.getMessage()); } catch (Exception paramArrayOfByte) { if (paramArrayOfByte.getMessage() == null) { break label166; } } if (this.c) { fa.d(fa.this); } return false; } label160: boolean bool = false; continue; label166: gu.d("Fail to retrieve the output stream"); } } public void a() { synchronized (this.e) { this.c = false; this.e.notifyAll(); interrupt(); try { this.d.close(); return; } catch (IOException localIOException) { for (;;) { gu.d("Error in closing output stream"); } } } } public void a(byte[] paramArrayOfByte) { synchronized (this.e) { if (this.c) { this.e.add(paramArrayOfByte); this.e.notifyAll(); } return; } } public boolean b() { gu.c("[PC] Sending heart beat..."); return b(ev.d); } public void run() { for (;;) { if ((!this.c) || (isInterrupted()) || (!fa.a(fa.this).isConnected()) || (fa.a(fa.this).isOutputShutdown()) || (fa.a(fa.this).isClosed())) { return; } synchronized (this.e) { boolean bool = this.e.isEmpty(); if (!bool) {} } try { this.e.wait(); if (this.e.isEmpty()) { continue; localObject = finally; throw ((Throwable)localObject); } } catch (InterruptedException localInterruptedException) { while (localInterruptedException.getMessage() == null) {} gu.d(localInterruptedException.getMessage()); return; } byte[] arrayOfByte = (byte[])this.e.poll(); b(arrayOfByte); } } }} |
算了不装了，分析这些代码的过程其实并不快乐。
这其中涉及的其他代码也还有很多，java加解密过程过于繁琐，还原起来确实费劲。最终经过提炼，解密函数如下：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 | unsigned char TalkboxTable[7][256] ={ { 0x2a,0xaa,0x6a,0xea,0x0a,0x8a,0x4a,0xca,0x3a,0xba,0x7a,0xfa,0x1a,0x9a,0x5a,0xda, 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0x15,0x95,0x55,0xd5,0x35,0xb5,0x75,0xf5,0x05,0x85,0x45,0xc5,0x25,0xa5,0x65,0xe5, 0x19,0x99,0x59,0xd9,0x39,0xb9,0x79,0xf9,0x09,0x89,0x49,0xc9,0x29,0xa9,0x69,0xe9, 0x11,0x91,0x51,0xd1,0x31,0xb1,0x71,0xf1,0x01,0x81,0x41,0xc1,0x21,0xa1,0x61,0xe1 } };int g_checked = 0;int CheckTable(unsigned char TalkboxTable[7][256]){ int x = 0, y = 0 ,n = 0; for (x = 0; x < 7; x ++) { for (n = 0; n < 256; n += 16) { unsigned char TmpChar = TalkboxTable[x][n]; unsigned char Tmp = TmpChar & 0x0f; for (y = n + 1 ; y < n + 16; y ++) { if( (TalkboxTable[x][y] & 0x0f) != Tmp) { return FALSE; } if( TalkboxTable[x][y] == TmpChar ) { return FALSE; } } } for (n = 0; n < 16; n ++ ) { unsigned char TmpChar = TalkboxTable[x][n]; unsigned char Tmp = TmpChar & 0xf0; for (y = n + 16 ; y < 256; y += 16) { if( (TalkboxTable[x][y] & 0xf0) != Tmp) { return FALSE; } if( TalkboxTable[x][y] == TmpChar ) { return FALSE; } } } } return TRUE;}int DecodeMessage(unsigned char * DecodeBuf,const unsigned char * EncodeBuf, size_t EncodeSize){ if(g_checked ==0) { CheckTable(TalkboxTable); g_checked = 1； } unsigned int Flag = FALSE; int x = 0, y = 0; unsigned char * DecodeBuffer = DecodeBuf; for (; EncodeSize ; EncodeSize --) { Flag = FALSE; for (y = 0; y < 256; y ++) { if (TalkboxTable[x][y] == * EncodeBuf) { * DecodeBuffer = y; Flag = TRUE; break; } } if (Flag == FALSE) //找不到说明码表错误 { * DecodeBuffer = TalkboxTable[x][0x20]; printf("Talkbox table error!\n"); //return FALSE; } DecodeBuffer ++; EncodeBuf ++; x ++; if (x == 7) { x = 0; } } return DecodeBuffer - DecodeBuf;} |
声明一下，该解密函数在某些情况下存在问题，会导致解密失败，原因未知。
本文开头被吊起胃口的同学们，不好意思只有这些了。
软件下载地址：
https://download.csdn.net/download/m0_37567738/88415580?spm=1001.2014.3001.5501
[培训]《安卓高级研修班(网课)》月薪三万计划，掌握调试、分析还原ollvm、vmp的方法，定制art虚拟机自动化脱壳的方法
最后于 2024-2-3 15:57
被satadrover编辑
，原因：
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