reversing
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Read more: LabyREnth CTF 2016 – 2 – CupsNote: For this challenge, we need install some things into our Android 5.1 device with Genymotion.For example, an ARM Translator.https://github.com/m9rco/Genymotion_ARM_Translation Download APK: https://lautarovculic.com/my_files/3778e43f21797bb383108182fe200a928be8605ff5b078aaf4feac02850b91f4Password: infected After extract the file, we get the .apkInstall it with adb adb install -r ezFill.apk We can see a login activitySo, for understand what the app do, we need decompile it. apktool d ezFill.apk And open the apk file with jadx (GUI version) We have just one activity…
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Read more: LabyREnth CTF 2016 – 1 – LastChanceDownload IPA: https://lautarovculic.com/my_files/fbfe8ecef4b5f97c40687fd02f74ae009277538490fba314e61830d75b3b4ac5Password: infected When you extract the file, we’ll have the .ipa file, and the LastChance_Simulator.app folder.Inside of this folder we have the LastChance executable. file LastChance LastChance: Mach-O 64-bit x86_64 executable, flags We can use ghidra for inspect this binary.After load, we have the entry point. But, we can search for some functions or hardcoded strings.I found some interesting strings. Let’s found where is used.Taking…
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Read more: Sharif University CTF 2016 – Android AppDescription: Find the Flag!!Note: For this challenge, we need install some things into our Android 5.1 device with Genymotion.For example, an ARM Translator.https://github.com/m9rco/Genymotion_ARM_Translation Download APK: https://lautarovculic.com/my_files/Sharif_CTF.apk Install the apk with adb adb install -r Sharif_CTF.apk Then, decompile with apktool apktool d Sharif_CTF.apk We can see an input that need a serial number for login.Let’s inspect the source code with jadx (GUI Version)The package name is com.example.ctf2 Here’s the MainActivity java code public class MainActivity extends…