mobileProhard

Infinity Bank

HackTheBox

Task: Flutter Android banking app with RSA+AES encrypted API communication. Solution: Decompiled Dart AOT code with blutter to discover crypto params go in HTTP headers, then exploited IDOR in transfer endpoint to steal from bank's system account.

jwt idor android aes_cbc flutter hybrid_encryption rsa_oaep banking_app dart_aot blutter

idor_exploitationflutter_aot_decompilationrsa_oaep_aes_cbc_hybrid_cryptopin_xor_decodingjwt_alg_none_bypass

$ ls tags/ techniques/

jwt idor android aes_cbc flutter hybrid_encryption rsa_oaep banking_app dart_aot blutter

idor_exploitationflutter_aot_decompilationrsa_oaep_aes_cbc_hybrid_cryptopin_xor_decodingjwt_alg_none_bypass

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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