游戏精英
 
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本帖最后由 killeraltair 于 2018-8-26 08:51 编辑
原文:
This release contains the latest update from August 21st and all
additional content of the Legendary Edition.
For the reason explained below, we noticed that two of the 38
included fighters (Gorilla and Robin) can have some small
delays/micro freezes when executing certain attacks. The slower
your cpu, the more noticeable the lags are on these two.
Even though the game isnt exactly new anymore, there are still a
lot of bugs left in the legit version.
Some Denuvo Techtalk :
For example when Robin does one of his special attacks, throwing a
smoke bomb on the ground, Denuvo starts writing a private key to the
memory from 000000014C113692:
000000014C113692 | 44 88 07 | mov byte ptr ds:[rdi],r8b
000000014C113695 | 5F | pop rdi
000000014C113696 | 50 | push rax
000000014C113697 | 21 C0 | and eax,eax
000000014C113699 | 9C | pushfq
000000014C11369A | 44 01 C1 | add ecx,r8d
000000014C11369D | 4C 89 F0 | mov rax,r14
000000014C1136A0 | 48 89 C1 | mov rcx,rax
000000014C1136A3 | 48 C7 C0 00 00 00 00 | mov rax,0
000000014C1136AA | 48 09 D0 | or rax,rdx
000000014C1136AD | 48 83 C1 01 | add rcx,1
000000014C1136B1 | 49 89 CE | mov r14,rcx
000000014C1136B4 | C1 C1 08 | rol ecx,8
000000014C1136B7 | 9D | popfq
000000014C1136B8 | 58 | pop rax
Then it fills the buffer at: 000000014779F593.
When everything is filled and the key is obtained by Denuvo itself,
it starts executing anti-tamper checks from 000000014774C37E:
000000014774C37E | 41 89 7D 00 | mov dword ptr ds:[r13],edi
000000014774C382 | 48 29 F3 | sub rbx,rsi
000000014774C385 | 41 54 | push r12
000000014774C387 | C1 CB 0D | ror ebx,D
000000014774C38A | BE D4 72 4D 3E | mov esi,3E4D72D4
000000014774C38F | 4C 8D 25 4F B5 06 FE | lea r12,qword ptr ds:[1457B78E5]
000000014774C396 | 4C 33 24 24 | xor r12,qword ptr ss:[rsp]
000000014774C39A | 48 8B 1C 24 | mov rbx,qword ptr ss:[rsp]
000000014774C39E | 4C 21 E3 | and rbx,r12
000000014774C3A1 | 4C 09 24 24 | or qword ptr ss:[rsp],r12
000000014774C3A5 | 0F BA F8 06 | btc eax,6
000000014774C3A9 | 0F BA F6 0D | btr esi,D
000000014774C3AD | 48 29 1C 24 | sub qword ptr ss:[rsp],rbx
000000014774C3B1 | 4C 89 E3 | mov rbx,r12
000000014774C3B4 | 48 23 1C 24 | and rbx,qword ptr ss:[rsp]
000000014774C3B8 | 4C 0B 24 24 | or r12,qword ptr ss:[rsp]
000000014774C3BC | 49 29 DC | sub r12,rbx
000000014774C3BF | C3 | ret
Here it gets the addresses of the various functions inside the Denuvo code
from r13 register and forces the original bytes, a single DWORD per cycle,
essentially overwriting any potential patches that were applied to these
functions before.
The way our crack works is that it reads a huge amount of encrypted code,
(including the code that the anti-tamper tries to overwrite) and therefore
patching the required place causes some slowdowns thanks to Denuvo and
the devs.
大致意思是游戏中38个角色有两个(大猩猩和罗宾)有些攻击迟滞问题,而且越玩越卡,拖累你的CPU。例如罗宾投掷个烟雾弹,Denuvo开始在内存中执行一串加密代码,然后又对占用内存的这串代码进行反篡改检测,同时不停的重构这些代码,占用了性能。
Codex破的是最新版的Denuvo(V4.9和V4.9++),接下来等着一天一破吧。
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