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Questions tagged [visual-basic]

an event-driven programming language and IDE from Microsoft for its COM programming model. The precursor to VB.NET.

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1answer
30 views

Is it possible to add new windows form control into compiled assembly using dnSpy?

I am trying to add another button into windows form using dnSpy. Is it possible to add another? I want the end result be like this one. Any help will be highly appreciated.Thanks
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2answers
64 views

How can a Javascript file drop .exe written in Visual Basic without network communication?

I am analyzing a malicious JS file, which is obfuscated in a way that I could not de-obfuscate. When I executed it in a virtual machine and spectated process changes, I noticed that a new executable ...
2
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2answers
169 views

How can I identify how this string is being encoded so I can replicate it?

A friends company uses an old VB6 application to generate encoded strings to then use in their also old and out of date database system. They have the application running in standalone mode so I can ...
1
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2answers
1k views

Reverse Engineering visual basics programs

I am a beginner and I am doing a few crackme stuff, I'm pretty okay when it comes to system calls such as user32. But there is one crackme which uses msvbvm50.dll (Visual Basic) and it has weird ...
9
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1answer
378 views

Visual Basic internal structure

I am analyzing some Visual Basic 6.0 malware(before .NET) and I have several questions regarding the internal structure of the format. The samples I have are both p-code or native code compiled(...
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1answer
1k views

Decompiling/Unpacking a Compiled/Packed File (Or Somehow Inserting a Flag)

I'm using a program that can pack/compile a folder with files into a single *.xyz file that only that program can decompile and read. In order for the program to create a compiled file the flag: [...
1
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1answer
975 views

Decompiling a windows 3.1, VisualBasic 3 exe. Do I need to decompile dll too? How?

New to decompiling, and code generally. Trying to decompile a windows 3.1 game (text adventure), so I can build it up again. Because at the moment it doesn't work (even on windows 3.1). I decompiled ...
2
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0answers
117 views

Identity of a programmer from a reversed VB.NET application (Visual Studio)

I have reversed a program I found running on my computer, written in VB.NET using Microsoft Visual Studio. I'm pretty sure it is a keylogger. Now since I'm a very careful user, I'm 100% sure I did ...
2
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3answers
1k views

About the VB P-CODE mode reverse-engineer

I have to reverse-engineer a VB P-CODE mode program. I had the program's P-CODE, but I don't know what it means. For example: Proc: 421840 421100: 04 FLdRfVar local_0098 421103: 04 ...
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2answers
610 views

large exe in ollydbg

I am trying to debug an executable(PEID shows Visual Basic 5.0 - 6.0) using ollydbg v1.10. The exe is quiet big about 74 mb and olly is always crashing during the analysis process. I am on windows 7, ...
1
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1answer
3k views

Unpacking a program which seems to be not packed?

I have downloaded a sample of a malware to analyze it. First, I opened it with PEiD to look if it is packed. PEiD gives me the following information: Microsoft Visual Basic 5.0/6.0 So, I assumed ...
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1answer
279 views

Where can i find Visual Basic Image Internal Structure Format by Alex Ionescu?

Where i can find a working link to this tutorial? I have searched a lot on the net but all links are broken. Could anyone upload it somewhere? Original link http://www.alex-ionescu.com/vb.pdf
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0answers
538 views

How to decrypt this file?

I have to decrypt a file that is used by an app built using VB5. The file itself contains some data that is decrypted when the app is run and the decrypted data is text data that is displayed in a ...
2
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1answer
958 views

Complications reverse engineering a Visual Basic application

I'm reverse engineering a Visual Basic application and I've run into a big of a sticky situation, so I was hoping that someone might have an opinion on a way to approach it. It's basically a crackme ...
3
votes
0answers
282 views

IDA Pro Symbian Debugger 'general OS related' Error [closed]

I am using remote symbian: c5-03 (Application TRK 3.2.7 for all S60 5.0 devices with production images). However, whenever I start the debugger, I get this error: general OS-related error What went ...
12
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3answers
23k views

Reverse engineering a Visual Basic p-code binary

p-code is the intermediate code that was used in Visual Basic (before .NET). I would like to know where I can find resources/tools related to analysis of these virtual machine codes.