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doesn't decrypt proto prxs properly (0.6.5 arc) #47

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zecoxao opened this issue Jun 3, 2022 · 2 comments
Open

doesn't decrypt proto prxs properly (0.6.5 arc) #47

zecoxao opened this issue Jun 3, 2022 · 2 comments

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@zecoxao
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zecoxao commented Jun 3, 2022

for some reason the tool doesn't decrypt prxs from proto 0.6.5 archive but the old tool i used to use (decrypt_prx) does
@zecoxao
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zecoxao commented Jan 23, 2024

my friend Zer0Tolerance has found out why. the last step with kirk 0xB (SHA1) fails, pspdecrypt uses this, my prx decrypter does not.

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zecoxao commented Jan 26, 2024

John Doe, [26/01/2024 21:50]
*(_DWORD *)(a1 + 0x44) = 0

John Doe, [26/01/2024 21:52]
this modification was done in the CheckPspCompress()

John Doe, [26/01/2024 21:53]
SHA1 OK!

John Doe, [26/01/2024 22:04]
just set 0 for u32(prx+0x44)

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