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Reverse engineering a software crack

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Re: Reverse engineering a software crack

#11

Post by Agingcoder »

doix wrote: post #4

This was a pretty long read and I didn't really get much from it. The format of a million tweets is awful. tl;dr it patches the executable by having a shim dll that does the patch when it gets loaded. Pretty common in the game modding community. It finds where it needs to patch by scanning for a byte pattern. What does the actual patch do? No idea, that's what I was waiting for and I never got it. I was expecting a d…

Same here - I was interested in the mechanics of the crack, having spent a fair amount of time reverse engineering binaries back in the days.

This is just a bunch of screenshots with ‘lol’ interspersed.

Re: Reverse engineering a software crack

#13

Post by carom »

doix wrote: post #4

This was a pretty long read and I didn't really get much from it. The format of a million tweets is awful. tl;dr it patches the executable by having a shim dll that does the patch when it gets loaded. Pretty common in the game modding community. It finds where it needs to patch by scanning for a byte pattern. What does the actual patch do? No idea, that's what I was waiting for and I never got it. I was expecting a d…

Agree, this was just a really long thread of someone creating structs in Ida.

Re: Reverse engineering a software crack

#14

Post by mrguyorama »

doix wrote: post #4

This was a pretty long read and I didn't really get much from it. The format of a million tweets is awful. tl;dr it patches the executable by having a shim dll that does the patch when it gets loaded. Pretty common in the game modding community. It finds where it needs to patch by scanning for a byte pattern. What does the actual patch do? No idea, that's what I was waiting for and I never got it. I was expecting a d…

I feel like this person is trying to copy Foone's voice but just doesn't get it

Re: Reverse engineering a software crack

#16

Post by kaladin-jasnah »

doix wrote: post #4

This was a pretty long read and I didn't really get much from it. The format of a million tweets is awful. tl;dr it patches the executable by having a shim dll that does the patch when it gets loaded. Pretty common in the game modding community. It finds where it needs to patch by scanning for a byte pattern. What does the actual patch do? No idea, that's what I was waiting for and I never got it. I was expecting a d…

Is this akin to using LD_PRELOAD on Linux to hook something like __libc_start_main and modifying specific data in one of the data sections of the ELF binary or something?

Re: Reverse engineering a software crack

#19

Post by amatecha »

can16358p wrote: post #15

Why can't I see the rest but only the first title tweet? Is that the case or is it a bug?

"as designed", due to the gradual decrease in Twitter's functionality due to unknown reasons (probably trying to manipulate people into signing up to boost user count and ad revenue)
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