Crackmes

Name	Author	Language	Arch	Difficulty	Quality	Platform	Date	Solution	Comments
Eat Sleep Trace Repeat	X3eRo0	Assembler	x86-64	2.0	4.5	Unix/linux etc.	8:36 AM 01/25/2022	1	6
Sabloom Text 6	X3eRo0	C/C++	x86	4.8	5.5	Windows	2:19 PM 06/07/2021	0	6
Pyaz	X3eRo0	C/C++	x86-64	4.0	4.0	Unix/linux etc.	2:17 PM 06/07/2021	1	5
fl04t	X3eRo0	Assembler	x86-64	3.6	4.3	Unix/linux etc.	4:48 AM 04/16/2021	2	2

Crackme	Infos
SerialActivation	The process of creating the keygen is very easy once you understand the way it is generating the key from the input serial. It is easy because it is doing some operations on the input serial to generate and then later that input is checked against another numerical input that is your key for the particular serial you entered. I just implemented the same generation algorithm in a python script and printed the final number that we get. That is our key.

Comment	Link
@Elvis intended solution is to recover flag from just the trace.txt without looking at the shellcode (counting the for loop counter and getting the index in the random bytes array) !XD!	==>
thanks @Elvis. Some writeups are already public because I used this challenge in Zh3r0 CTF v2 last year. I thought I should put it here as well. :)	==>
yes	==>
lazy - Can you post your solution i want to see why Libre calc was useful to you?	==>
4aca7f6c - Dude amazing writeup	==>
It is easy to recognise the registers used by VM if you can recognise the code which emulating lets say the call instruction. it will add or sub from the sp and it will assign something to the pc. so you if you see this pattern you know which variable is sp and which one is pc. this is how you can sort of reconstruct the whole vm context.	==>
flag{M3x1c4nMl4lw4r3_pl3rro}	==>

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