AES-Killer v3.0 - Burp Plugin To Decrypt AES Encrypted Traffic Of Mobile Apps On The Fly

Burpsuite Plugin to decrypt AES Encrypted traffic on the fly.

  • Burpsuite
  • Java

Tested on
  • Burpsuite 1.7.36
  • Windows 10
  • xubuntu 18.04
  • Kali Linux 2018

What it does
  • The IProxyListener decrypt requests and encrypt responses, and an IHttpListener than encrypt requests and decrypt responses.
  • Burp sees the decrypted traffic, including Repeater, Intruder and Scanner, but the client/mobile app and server see the encrypted version.
NOTE: Currently support AES/CBC/PKCS5Padding encryption/decryption.

How it works
  • Require AES Encryption Key (Can be obtained by using frida script or reversing mobile app)
  • Require AES Encryption Initialize Vector (Can be obtained by using frida script or reversing mobile app)
  • Request Parameter (Leave blank in case of whole request body)
  • Response Parameter (Leave blank in case of whole response body)
  • Character Separated with space for obfuscation on request/response (In case of Offuscation)
  • URL/Host of target to decrypt/encrypt request and response

How to Install
Download jar file from Release and add in burpsuite

Original Request/Response

Getting AES Encryption Key and IV
  • First setup frida server on IOS and Android device.
  • Launch Application on mobile device.
  • Run this frida script on your host machine to get AES Encryption Key and IV.

Decrypt Request/Response
  • Provide SecretSpecKey under Secret Key field
  • Procide IV under Initialize Vector field
  • Provide Host/URL to filter request and response for encryption and decryption
  • Press Start AES Killer


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