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libaibaba, posted Mon Apr 15, 2019 7:05 am (46951)

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Hello everyone,I recently watched a mobile game?overlord?,Its assets are encrypted with XOR and regularly, and I have calculated filexor "0xFF",But I don't know how to implement loops on BMS,This is assets.https://mega.nz/#!mWRR2YyL!gtO4BHq8fkpZqcDSampg1UNMLrib1FLBcNwXVBPTkxw
Finally, please forgive my English and thank you.

chrrox, posted Mon Apr 15, 2019 4:28 pm (46969)

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so starting at offset 1 it reads 8 bytes xored with 0xFF then reads 10 bytes plain and repeats that till the end of the file?
just xor the file with
0x00FFFFFFFFFFFFFFFF000000000000000000

so

Code:

get size asize
get name basename
string name   .dec
filexor "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00\x00\x00\x00\x00\x00\x00\x00"
log name 0 size

libaibaba, posted Mon Apr 15, 2019 5:09 pm (46975)

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chrrox wrote:

so starting at offset 1 it reads 8 bytes xored with 0xFF then reads 10 bytes plain and repeats that till the end of the file?
just xor the file with
0x00FFFFFFFFFFFFFFFF000000000000000000

so

Code:

get size asize
get name basename
string name   .dec
filexor "\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00\x00\x00\x00\x00\x00\x00\x00"
log name 0 size

Succeed!!!! Thanks very much!! Have a good day

Harry_AJMK418, posted Sun Aug 21, 2022 8:10 am (73096)

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I need help in the decryption of xor encrypted files of the unity game Call Of Duty Mobile if anyone could help me out! if can help me out dm me on twitter - @Harry_AJMK418 or discord - Harry$#4180