All Questions
24 questions
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+50
How can I compare different execution traces of the same exe, but ran with different parameters?
Context
I'm working on analyzing how a software's behavior changes when run with different parameters.
My goal is to compare the execution traces (e.g., function calls, memory accesses, or instruction ...
- 35
0
votes
0
answers
47
views
How to get which Tedit is referenced when retrieving text
Reversing a borland builder 6 application, I came across this function: @Controls@TControl@GetText$qqrv
Now, the two parameters for the function are:
LEA param_2=>local_8,[EBP + -0x4]
MOV param_1,...
- 1
0
votes
0
answers
51
views
Why a breakpoint works in x64dbg but not in IDA?
I've spent all morning trying to find a solution to debug with IDA the same function I'm debugging in x64dbg.
In x64dbg, I just go to Symbols -> ws2_32.dll -> WSARecvFrom -> F2 (set ...
- 161
2
votes
1
answer
143
views
Understanding the logic behind decompiled code
Hi I was learning reverse engineering by doing some crackme(s) found online using IDA and x64dbg.
I'm quite confused on the below decompiled code.
bool Logic()
{
char CODE[] = "RAND_STRING&...
- 161
2
votes
1
answer
586
views
Instead of doing a (long) analysis of an .exe, can i run that .exe, attach Ida Pro's debugger to it, and get the pseudo code of functions i want?
Basically, I have this 64 bits game.exe file which is about 400mb. It takes about 24 hours to do the analysis of the file in Ida pro 64 bits free version.
Problem is i have to do it again cause there ...
- 73
2
votes
0
answers
162
views
Find an address of injected code via GetModuleHandleA
I am reversing really old game (20 years old).
l2.exe loads Dsetup.dll Network.dll. (not sure about order)
inside of the Dsetup.dll i found and injection (kind of protection) into module Network.dll. ...
- 121
0
votes
1
answer
780
views
How do I find a function and find out what it does using reverse engineering?
I am attempting to find a function in a specific game. Is there any way that, using the assembly code I get from decompiling the game in either IDA or x64dbg, I can locate a function I am specifically ...
- 39
2
votes
1
answer
861
views
Finding function from pattern
I have been trying to reverse engineer a game for a while now. I have a pattern already for the function I want to find:
\x89\x54\x24\x10\x4C\x89\x44\x24\x18\x4C
\x89\x4C\x24\x20\x48\x83\xEC\x28\x48\...
- 39
2
votes
0
answers
417
views
Strange exception thrown while debugging in Win10, but not Win7
I am disassembling a legacy 32-bit (x86) application using IDA Home (7.6) (for x86 disassembly) in a 64-bit Windows 10 environment running in a virtual machine (VMWare Fusion for Mac). The application ...
- 121
1
vote
1
answer
830
views
A tutorial or docs to unpack a custom packed PE
I am facing an odd situation. I have a licensed game that's doing odd actions on the system. I isolated it as I could and observed the behavior both network and so forth, and I suspect it's a custom-...
- 11
1
vote
0
answers
917
views
Is there a clear Ollydbg successor?
I used Ollydbg 2.01 back in 2014 when Olly was working to create a 64-bit version. I was very eager to see the 64-bit version, but sadly that never came to pass. I abandoned reverse engineering for ...
- 11
0
votes
2
answers
1k
views
Breaking on string access from StringTable (resource)
If I have a resource like this:
STRINGTABLE
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
{
100, "OK"
101, "Warning"
102, "Error"
103, "Name"
104, &...
- 319
1
vote
1
answer
382
views
Reverse engineer sticky notes to allow external script to open new notes
For a silly little project I wanted to do, I wanted to make it so that I could open new notes (Microsoft Sticky Notes) from an external script - preferably python. Although I'm not good at reverse ...
0
votes
2
answers
2k
views
Finding function in IDA from x64dbg
I've found a function I want to call in x64dbg, and wanted to see it's prototype and how it looks like in IDA. However, I was expecting to see a function in IDA but land in the middle of one.
The ...
- 3
0
votes
1
answer
611
views
Debug with IDA Pro right click option
So I was wondering if is there a way for IDA to appears in the righ click options of an executable.
As you can see, Debug with x64dbg was built by itself, IDA 32 didn't do, so I just changed it in ...
- 153
-2
votes
1
answer
4k
views
Debug and crack .NET executable PE
i'm trying to learn reverse engineering for penetration testing my codes and i believe i won't learn unless i can do some practical so
I'm trying to crack an application that is written in C# and all ...
- 101
0
votes
1
answer
9k
views
How to use memory address information from IDAFree to set a breakpoint in x32dbg?
I have a DLL paused at EntryPoint in x32dbg. I am interested in examining memory following a specific API call that this DLL makes. I found the API call in the imports section when I open the DLL in ...
- 233
1
vote
1
answer
296
views
Getting started with RE, with eventually goal being able to make a keygen [closed]
I want to get started in RE and eventually want to be able to figure out how to calculate a serial from a username/license number from program number, etc... (meaning the software tests the serial ...
- 11
1
vote
1
answer
1k
views
Is there any debugger that supports step-back? [duplicate]
In Ida when I use debugger, but I can't step back.
Is there any debugger that allow go backwards?
- 11
1
vote
1
answer
823
views
identifying function prototype from dll
I have an exe file and a dll file. This exe file uses the dll to decode input file. This exe file is gui based and does not support command line execution.
So my requirement is to create a program ...
- 13
2
votes
2
answers
2k
views
Record all calls to specific function? Olly/x64dbg
I need to find values of arguments that are passed to specific function.
Normally I set INT3 breakpoint and check registers and the stack whenever it is reached. But there is too many calls to this ...
- 23
2
votes
0
answers
327
views
How can I fix an unpacked binary which calls out-of-bounds memory?
I've unpacked a binary which was packed with PECompact v2.2 (according to Detect It Easy) and successfully rebuilt the IAT. The binary actually does run, but when I open it in IDA Pro debugger, it is ...
- 1,880
5
votes
1
answer
451
views
School project - Cracking a school emulator
John here. I'm in the last half of our IT school, and we got a side project from one of our teachers. He wrote a emulator back in 2009 in delphi, which is in use till that time. Nothing special, just ...
- 51
4
votes
1
answer
3k
views
Displaying IDA names in x64dbg or OllyDbg
I like x64dbg, but, without seeing IDA's names, it's hard to keep track of all the hex. Is there any way to export IDA's names into x64dbg (ideally contiuously)
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