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Xctf mobile--app2 problem solving
2022-07-03 12:39:00 【Passers by. Hello】
1. take apk Drag in jadx in
2. Get into SecondActivity.class
doRawData() by native function . Get into ida analysis
3. ida Find doRawData()
It can be seen that aes encryption , secret key ：thisisatestkey==
4. Decrypt 
6. Input found error , Then static analysis , Find out
Decryption is
Cas3_0f_A_CAK3
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