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decode passwords using XOR ciphering

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- retrieve phone number from phone rather than hardcoding
This commit is contained in:
Joel Beckmeyer 2024-06-21 12:31:58 -04:00
parent 76bd47869d
commit e5b22ec65e
5 changed files with 369 additions and 2 deletions
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10
.idea/deploymentTargetSelector.xml Normal file
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@ -0,0 +1,10 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="deploymentTargetSelector">
<selectionStates>
<SelectionState runConfigName="app">
<option name="selectionMode" value="DROPDOWN" />
</SelectionState>
</selectionStates>
</component>
</project>

41
.idea/inspectionProfiles/Project_Default.xml Normal file
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@ -0,0 +1,41 @@
<component name="InspectionProjectProfileManager">
<profile version="1.0">
<option name="myName" value="Project Default" />
<inspection_tool class="PreviewAnnotationInFunctionWithParameters" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewApiLevelMustBeValid" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewDimensionRespectsLimit" enabled="true" level="WARNING" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewFontScaleMustBeGreaterThanZero" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewMultipleParameterProviders" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewMustBeTopLevelFunction" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewNeedsComposableAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewNotSupportedInUnitTestFiles" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewPickerAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
</profile>
</component>

263
.idea/other.xml Normal file
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@ -0,0 +1,263 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="direct_access_persist.xml">
<option name="deviceSelectionList">
<list>
<PersistentDeviceSelectionData>
<option name="api" value="27" />
<option name="brand" value="DOCOMO" />
<option name="codename" value="F01L" />
<option name="id" value="F01L" />
<option name="manufacturer" value="FUJITSU" />
<option name="name" value="F-01L" />
<option name="screenDensity" value="360" />
<option name="screenX" value="720" />
<option name="screenY" value="1280" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="28" />
<option name="brand" value="DOCOMO" />
<option name="codename" value="SH-01L" />
<option name="id" value="SH-01L" />
<option name="manufacturer" value="SHARP" />
<option name="name" value="AQUOS sense2 SH-01L" />
<option name="screenDensity" value="480" />
<option name="screenX" value="1080" />
<option name="screenY" value="2160" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="31" />
<option name="brand" value="samsung" />
<option name="codename" value="a51" />
<option name="id" value="a51" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy A51" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1080" />
<option name="screenY" value="2400" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="34" />
<option name="brand" value="google" />
<option name="codename" value="akita" />
<option name="id" value="akita" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 8a" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1080" />
<option name="screenY" value="2400" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="33" />
<option name="brand" value="samsung" />
<option name="codename" value="b0q" />
<option name="id" value="b0q" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy S22 Ultra" />
<option name="screenDensity" value="600" />
<option name="screenX" value="1440" />
<option name="screenY" value="3088" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="32" />
<option name="brand" value="google" />
<option name="codename" value="bluejay" />
<option name="id" value="bluejay" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 6a" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1080" />
<option name="screenY" value="2400" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="29" />
<option name="brand" value="samsung" />
<option name="codename" value="crownqlteue" />
<option name="id" value="crownqlteue" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy Note9" />
<option name="screenDensity" value="420" />
<option name="screenX" value="2220" />
<option name="screenY" value="1080" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="34" />
<option name="brand" value="samsung" />
<option name="codename" value="dm3q" />
<option name="id" value="dm3q" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy S23 Ultra" />
<option name="screenDensity" value="600" />
<option name="screenX" value="1440" />
<option name="screenY" value="3088" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="33" />
<option name="brand" value="google" />
<option name="codename" value="felix" />
<option name="id" value="felix" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel Fold" />
<option name="screenDensity" value="420" />
<option name="screenX" value="2208" />
<option name="screenY" value="1840" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="33" />
<option name="brand" value="google" />
<option name="codename" value="felix_camera" />
<option name="id" value="felix_camera" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel Fold (Camera-enabled)" />
<option name="screenDensity" value="420" />
<option name="screenX" value="2208" />
<option name="screenY" value="1840" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="33" />
<option name="brand" value="samsung" />
<option name="codename" value="gts8uwifi" />
<option name="id" value="gts8uwifi" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy Tab S8 Ultra" />
<option name="screenDensity" value="320" />
<option name="screenX" value="1848" />
<option name="screenY" value="2960" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="34" />
<option name="brand" value="google" />
<option name="codename" value="husky" />
<option name="id" value="husky" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 8 Pro" />
<option name="screenDensity" value="390" />
<option name="screenX" value="1008" />
<option name="screenY" value="2244" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="30" />
<option name="brand" value="motorola" />
<option name="codename" value="java" />
<option name="id" value="java" />
<option name="manufacturer" value="Motorola" />
<option name="name" value="G20" />
<option name="screenDensity" value="280" />
<option name="screenX" value="720" />
<option name="screenY" value="1600" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="33" />
<option name="brand" value="google" />
<option name="codename" value="lynx" />
<option name="id" value="lynx" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 7a" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1080" />
<option name="screenY" value="2400" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="31" />
<option name="brand" value="google" />
<option name="codename" value="oriole" />
<option name="id" value="oriole" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 6" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1080" />
<option name="screenY" value="2400" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="33" />
<option name="brand" value="google" />
<option name="codename" value="panther" />
<option name="id" value="panther" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 7" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1080" />
<option name="screenY" value="2400" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="31" />
<option name="brand" value="samsung" />
<option name="codename" value="q2q" />
<option name="id" value="q2q" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy Z Fold3" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1768" />
<option name="screenY" value="2208" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="34" />
<option name="brand" value="samsung" />
<option name="codename" value="q5q" />
<option name="id" value="q5q" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy Z Fold5" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1812" />
<option name="screenY" value="2176" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="30" />
<option name="brand" value="google" />
<option name="codename" value="r11" />
<option name="id" value="r11" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel Watch" />
<option name="screenDensity" value="320" />
<option name="screenX" value="384" />
<option name="screenY" value="384" />
<option name="type" value="WEAR_OS" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="30" />
<option name="brand" value="google" />
<option name="codename" value="redfin" />
<option name="id" value="redfin" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 5" />
<option name="screenDensity" value="440" />
<option name="screenX" value="1080" />
<option name="screenY" value="2340" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="34" />
<option name="brand" value="google" />
<option name="codename" value="shiba" />
<option name="id" value="shiba" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel 8" />
<option name="screenDensity" value="420" />
<option name="screenX" value="1080" />
<option name="screenY" value="2400" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="33" />
<option name="brand" value="google" />
<option name="codename" value="tangorpro" />
<option name="id" value="tangorpro" />
<option name="manufacturer" value="Google" />
<option name="name" value="Pixel Tablet" />
<option name="screenDensity" value="320" />
<option name="screenX" value="1600" />
<option name="screenY" value="2560" />
</PersistentDeviceSelectionData>
<PersistentDeviceSelectionData>
<option name="api" value="29" />
<option name="brand" value="samsung" />
<option name="codename" value="x1q" />
<option name="id" value="x1q" />
<option name="manufacturer" value="Samsung" />
<option name="name" value="Galaxy S20" />
<option name="screenDensity" value="480" />
<option name="screenX" value="1440" />
<option name="screenY" value="3200" />
</PersistentDeviceSelectionData>
</list>
</option>
</component>
</project>

3
app/src/main/AndroidManifest.xml
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@ -6,6 +6,9 @@
android:name="android.hardware.telephony" android:name="android.hardware.telephony"
android:required="false" /> android:required="false" />
<uses-permission android:name="android.permission.RECEIVE_SMS"/> <uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.READ_PHONE_NUMBERS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<application <application
android:allowBackup="true" android:allowBackup="true"

54
app/src/main/java/us/beckmeyer/vvmsmsreceiver/SmsReceiver.kt
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@ -2,21 +2,29 @@ package us.beckmeyer.vvmsmsreceiver
import android.content.BroadcastReceiver import android.content.BroadcastReceiver
import android.content.Context import android.content.Context
import android.content.Context.TELEPHONY_SERVICE
import android.content.Intent import android.content.Intent
import android.net.Uri
import android.os.Bundle import android.os.Bundle
import android.provider.Telephony import android.provider.Telephony
import android.telephony.SmsMessage import android.telephony.SmsMessage
import android.telephony.TelephonyManager
import android.util.Log import android.util.Log
import kotlin.io.encoding.Base64
import kotlin.io.encoding.ExperimentalEncodingApi
class SmsReceiver : BroadcastReceiver() { class SmsReceiver : BroadcastReceiver() {
private val TAG = "SmsReceiver" private val TAG = "SmsReceiver"
@OptIn(ExperimentalStdlibApi::class) @OptIn(ExperimentalStdlibApi::class, ExperimentalEncodingApi::class)
override fun onReceive(context: Context, intent: Intent) { override fun onReceive(context: Context, intent: Intent) {
val phoneNumber = getNumber(context)
Log.d(TAG, "got phoneNumber = $phoneNumber")
if (intent.action == Telephony.Sms.Intents.SMS_RECEIVED_ACTION || if (intent.action == Telephony.Sms.Intents.SMS_RECEIVED_ACTION ||
intent.action == Telephony.Sms.Intents.DATA_SMS_RECEIVED_ACTION) { intent.action == Telephony.Sms.Intents.DATA_SMS_RECEIVED_ACTION
) {
val bundle: Bundle? = intent.extras val bundle: Bundle? = intent.extras
bundle?.let { bundle?.let {
val pdus = bundle.get("pdus") as Array<ByteArray> val pdus = bundle.get("pdus") as Array<ByteArray>
@ -26,6 +34,15 @@ class SmsReceiver : BroadcastReceiver() {
smsMessage?.let { smsMessage?.let {
if (intent.action == Telephony.Sms.Intents.DATA_SMS_RECEIVED_ACTION) { if (intent.action == Telephony.Sms.Intents.DATA_SMS_RECEIVED_ACTION) {
Log.d(TAG, "Data SMS received on port 5499") Log.d(TAG, "Data SMS received on port 5499")
val bodyUri = Uri.parse("advvm://" + smsMessage.messageBody)
bodyUri.getQueryParameter("p")?.let { p ->
val ciphertext = Base64.decode(p).toString(Charsets.US_ASCII)
Log.d(TAG, "ciphertext = $ciphertext")
if (phoneNumber != null) {
val password = decode(ciphertext, phoneNumber)
Log.d(TAG, "password = $password")
}
}
} }
val messageBody = smsMessage.messageBody val messageBody = smsMessage.messageBody
Log.d(TAG, "Message body: $messageBody") Log.d(TAG, "Message body: $messageBody")
@ -36,4 +53,37 @@ class SmsReceiver : BroadcastReceiver() {
} }
} }
} }
fun getNumber(context: Context): String? {
// Create obj of TelephonyManager and ask for current telephone service
val telephonyManager = context.getSystemService(TELEPHONY_SERVICE) as TelephonyManager
val phoneNumber = telephonyManager.line1Number
return phoneNumber.replace("\\D".toRegex(), "").takeLast(10)
}
private fun stripPrefix(char: Char): Int {
return char.code and 0x0F
}
private fun getStripped(text: String): ByteArray {
val stripped = text.map { stripPrefix(it).toByte() }
return stripped.toByteArray()
}
fun decode(cipher: String, phoneNumber: String): String {
val cipherStripped = getStripped(cipher)
val phoneNumberStripped = getStripped(phoneNumber)
val secret = byteArrayOf(12, 5, 3, 11, 9, 4, 5, 3, 8, 14)
val text = cipherStripped.zip(phoneNumberStripped)
.zip(secret.asIterable()) { (c, p), s -> (c.toInt() xor p.toInt() xor s.toInt()).toByte() }
.toMutableList()
if (cipherStripped.size > 10) {
text.addAll(cipherStripped.slice(10 until cipherStripped.size).toMutableList())
}
return text.toByteArray().map { (it + 0x30).toChar() }.joinToString("")
}
} }