Questions tagged [ollydbg]
A very popular Windows 32bits debugger written by Oleh Yuschuk. It is free and lightweight and yet powerful and extendable through plugins.
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19 views
Ollydbg skippingover breakpoint
I am new to the ollydbg world- I am in the middle of injecting shellcode (created with msfvenom...) into a small PE, and during debugging, I can't get it to halt at the breakpoints I set.
If I run the ...
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0answers
35 views
Ollydbg 110 vs Ollydbg 201 - Different assembly code (lena151 tutorials)
i started RE with lena151 tutorials. i downloaded latest version of ollydbg -> version 2.01
Then i open first sample : reverseMe.exe .
In ollydbg 2.01 the first jump is JNE
But in ollydbg 1.10 the ...
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1answer
58 views
Calling MessageBoxW x64 confused about pointer
OK, I am very new to x64dbg. I used to use OllyDbg a lot and I'm having some problems with this.
I just made a customized version of MS-PAINT for practice by changing a few things like the default ...
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1answer
93 views
Calling/debugging calls to DLL via ollydbg or x64dbg
I have used dependency walker on a DLL of an old game from 2001. I have found a function which I want to be able to analyze. I see the name of the function and the entry point (at the end).
How do I ...
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1answer
64 views
How to find out what stack frame EBP belongs to
i'm newbie to all the subject of RE so this question may sound easy.
on OllyDbg i see a lot of references to EBP & i can not understand to which stack frame does EBP belongs to, since there are ...
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55 views
Unable to debug with Debuggers
I can't debug Screen Recorders on any debugger. I tried every possible way including anti debugging plugins, editing up the instructions but every time I failed. Mostly they land on pushad (which ...
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45 views
finding best way to bypassing password check process
i am working to openning or bypassing a password . at first there is a password with 8 chracters ( letter,number , sign) that i attached a picture of password requst window i opened it by ollydbg and ...
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1answer
73 views
What is physical address on a pe reader?
What is physical address on a Pe file? I had search on the microsoft website article about pe files and don't have found anything.
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1answer
37 views
what means “ilegal use of registers”?
I read pe program using a Pe Reader to view all sections, the .text section starts is "0x0001000":
What is in the pe program reader:
And is this what i see on the debugguer :
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78 views
x64dbg execute till next call OR return
I am using x64dbg and I want to know if there's any way to run the code till next Call statement?
I know there is an "Execute till return" option,
but I want to execute till next call ...
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1answer
66 views
Debugging Encrypted Malware with Multiple Threads
What is the best approach when debugging a multithreaded program that is yet to be encrypted? Where is the best place to put Breakpoints using Ollydbg?
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1answer
88 views
OllyDBG saved executable crashes
I'm kind of new to this sort of thing so I hope someone can help me. I'm currently trying to understand how most malwares infect other files/modify an exe. Using Visual Studio 2017 I made an exe (with ...
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1answer
56 views
Is it possible to view PE headers in xdbg just like ollydbg?
In ollydbg you can view the PE header of a module, by going into memory map and double clicking on the PE headers, but i couldn't find a way to do this in XDBG, is it possible?
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68 views
Shellcode doesn't match OllyDbg
I have created a simple program that is susceptible to a buffer overflow using strcat(buffer1, buffer2). I have successfully overflowed into the EIP and have placed an address located in NTDLL which ...
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1answer
79 views
ollydbg: CMP - what the difference
What is the difference between:
MOV SI,WORD PTR DS:[ESI+0D]
CMP SI,1388
and
CMP WORD PTR DS:[ESI+0d],1388
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45 views
Develop a Hello World plugin for Ollydbg
I wanted to write a plugin for Ollydbg 2 which shows just a simple message. I write the following one but it doesn't load in ollydbg. I am using ollydbg 2 and my DLL can't load by it. Where is the ...
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34 views
Ollydbg Plugin Development
I wanted to write a simple Ollydbg plugin that shows me, for example, a simple message like hello world. in further, I wanted to learn how can I write a complex plugin to hook a function and to modify ...
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1answer
88 views
OllyDbg - change loaded file name - Fix error caused by renamed file
There is a tool called LuteBot which is used in the game Mordhau to be able to make the player play midi files with the in game lute.
In the tool you need to specify the location of the file ...
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28 views
Protections against disassembly tools
I am very new to reverse engineering and thus, I struggle to even know the right search terms for effective research.
I have been trying to reverse engineering an encryption algorithm of a software ...
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2answers
102 views
Patched Application causes Acces Violation c0000005
I've been working with this application to remove it's trial limitations.
But every byte I change, it throws an acces violation.
Piece of the code:
Original:
003354C6 - 0F85 D3000000 - jne ...
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0answers
34 views
How to see the full info of a handle in IDA debugger, just like other debuggers like xdbg?
So in xdb, whenever i see a handle value like 0xA0, i can easily go to handle tabs and see what type of handle it is and for example if its a file handle, what file.
how can i do this in IDA ...
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1answer
87 views
Dump array of char* ASCII text to file? (ollydbg or x32dbg)
This question is similar to: List arrays (de-reference pointers) in Ollydbg
I have an array of pointers that point to character arrays. I followed the above link and can view the ASCII values from ...
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1answer
94 views
HIEW Sharing Violation On Edit
I'm still very new to the whole reverse engineering field. I wanted to start learning by bypassing an activation code prompt. I found the line in OllyDbg, and moved the EXE to HIEW (Hacker Eye View) ...
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1answer
142 views
Nop the string in online games
So i found a string "RespawnTime" in online games and i just edit the string to nop and it worked perfectly, my player is no more waiting to respawn
My question is how is that possible? I just edit ...
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1answer
53 views
OllyDbg: Constant does not fit into operand
I'm trying to assemble this instruction:
I'm not being able to do it..
When I test with MOV AX,55000 I get this error:
I tested before in Cheat Engine, and this is working as AOB injection: MOV AX,#...
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1answer
123 views
Can't find injected DLL in OllyDbg
I am trying to learn about injecting a DLL into a process and I wanted to simply execute a code which injects an already built DLL so that I could then check with OllyDbg if it worked.
I am using the ...
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1answer
293 views
Entry point of a program
im new to assembly and reverse engineering, i have a question regarding to how the address work.
I examined the entry point of a program using varies PE tools, the result is 0x00043b33, but when i ...
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1answer
110 views
Detailed API call descriptions not available in x64dbg
I am following a RE tutorial, and the guy is using Ollydbg while I use x64dbg... and I don't find all the descriptions in that Olly has, and it's quite annoying !
There is an example from the two ...
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1answer
507 views
How to change the title of a windows GUI app when patching? (the title that usually writes the application name)
So I'm trying to patch a binary (its a GUI app), and i want to patch the title of it as well when I'm patching it, and by title i mean the text that appears on top of the app that usually is the ...
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2answers
54 views
Which APIs are responsible for terminating process icons in Taskbar?
I am trying to reverse and debug a program but it exists after certain point, tried setting breakpoint on any inter module call that starts with exit or terminate, now here's the weird part :
it does ...
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0answers
87 views
How can one replace bitmap (image) inside exe?
I have an application (something like a text editor) that has a background image.
I understand how to replace text in exe file, but what about image?
I wonder how difficult and what is the way to ...
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2answers
185 views
Ollydbg: How to set a conditinal breakpoint for a register gets special value
I read this question about "set conditional break point on a register value" ; but its about setting a bp on special address!
I want to set a bp when for example ECX == 12345678 , i can do this on ...
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1answer
153 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 ...
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223 views
How to bring the message box other than error message box
The program asks serial number. I've searched the API call which triggers the wrong password message box and force it into accepting an incorrect serial number in x64dbg’s string references. I found ...
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1answer
633 views
Finding out what calls win32u.dll functions
There's a button which, when clicked, writes some data to the clipboard.
I'm trying to call the function this button executes using DLL Injection.
I managed to find the function in win32u.dll which ...
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3answers
1k views
Cyber security student wanting to start learning reverse engineering [duplicate]
I'm really interested in learning reverse engineering. Especially in regards to malware. Any help is much appreciated
What should I learn before I start to learn reverse engineering?
Is learning C/...
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120 views
OllyDbg - After restarting program, breakpoints lost
I am new to OllyDbg and I made a small (.NET Console App) program to test if I can crack the password. To set the break point where it writes Incorrect password. I need to run the program first. But ...
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0answers
148 views
Process terminating when breakpoint reached
I want to set breakpoint on the recv function to replace the received packets. But, I can not put breakpoint on any instruction in the program, the process simply closes with code 4000001f. I also ...
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0answers
119 views
How to redirect stdin in OllyDbg?
When I use IDA, I can use stdin from the file as in bash.
When I tried to do it in OllyDbg, it processed the parameters simply as a string.
Can I redirect stdin in OllyDbg?
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1answer
118 views
To find a keyboard shortcut inside an application
The app has a "secret dialog window" and I'm sure it appears after pressing combination of some buttons. How I can find the combination in this app?
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70 views
Hearts Game Passing Cards
I'm trying to make this Hearts game so that i can select more than 3 cards.
This is the func that will compare how many cards i've chosen with 3
it'll jump to this address if > 3
so i replace the ...
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3answers
404 views
How to know what does the function do?
I've made a simple c++ program. In the ollydbg i searching for the string which is my name, there are 2-3 call functions near the string location but i don't know what those function do.
My question ...
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1answer
102 views
'local call from' in x64dbg
In OllyDbg there was a thing called "local call from xxx,xxx,xxx,xxx ... " which helps me know from where a function is being called in the entire module. Does such a feature exist in x64dbg as well?
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1answer
714 views
Call Stack vs Intermodular Calls in Ollydbg
What is the difference between call stack and intermodular calls. Could you clarify the difference between the two? For example if I need to catch message box API function, do these methods serve the ...
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1answer
431 views
Program closing even with IsDebuggerPresent Patched!
i'm in some serious problems when trying to debug a program with ollydbg, i patched IsDebuggerPresent but still after starting debugging with it patched it will Terminate anyways.
Steps i Followed ...
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1answer
1k views
How to find functions in IDA Pro/x64dbg
i created a program for testing, very simple in c++.
is ask for password if it is match is print correct, if no it is print "bad".
i try to find with ida where is the function of what i made.
but i ...
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0answers
102 views
Getting a full trace (every line) from ollydbg
When I use the ollydbg run trace I don't seem to he getting every single line as I expect to. First off let me explain what Iexpect to see:
Address hexDumb Command comments EAX ECX etc...
0042AD43 ...
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1answer
423 views
Compare two traces from ollydbg
I have a program that executes differently depending on what files are present on my computer. I'd like to run a trace in two scenarios (with the default file and with an edited version of the file) ...
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1answer
2k views
How to see address in Graph view Ida
In Ida when I want to see the address of code I must switch to Text view
How can I see the address of code with Graph view ?
By the way, is there grapgh viwe in OllyDbg?
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1answer
246 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?
