Debugging is a methodical process of finding and reducing the number of bugs, or defects, in a computer program.

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42
votes
7answers
2k views

Why is application crash considered insecure?

If an application crashes, the program stops and there is nothing anyone can do about it, other than starting the program again. Crash is a bad behaviour in general and should be avoided, but why are ...
18
votes
4answers
2k views

Is this verbose error message on the DOT website a security issue?

I was looking for a form on the US Department of Transportations website, and I came to a page that gave me an error, with a full debug report and stack trace. Hopefully, you can get the same result ...
10
votes
1answer
598 views

Help in understanding an application's crash - exploitable?

Being new to researching vulnerabilities in native applications (as opposed to web apps), I'm having difficulties understanding a crash in Debian's browser, Epiphany (version 2.30.6), and determining ...
7
votes
3answers
2k views

Does a working JTAG diagnostics port on Android phone add unnecessary risk?

Not enough people seem to know about JTAG outside the hacker and LEO communities but the short version is that JTAG allows anyone with physical access to your phone to chew their way right into it. ...
3
votes
1answer
474 views

How to debug/reverse engineer java applets?

I need to analyze a java application (a .jar file) for a war game. I know java can be decompiled, but the coder apparently did a lot of obfuscation to prevent the reverse engineers from understanding ...
2
votes
1answer
513 views

Explaining a buffer overflow vulnerability in C

Given this C program: #include <stdio.h> #include <string.h> int main(int argc, char **argv) { char buf[1024]; strcpy(buf, argv[1]); } Built with: gcc -m32 -z execstack prog.c -o ...
2
votes
1answer
506 views

What tricks can be used to prevent debugging?

What tricks can be used to prevent or hinder debugging? Examples: IsDebuggerPresent API on Windows Exception handlers used for program flow. GetTickCount / rdtsc checks. Are there any good ...
2
votes
1answer
194 views

EIP pointer is overwritten but EBP remains intact

I was trying out a simple stack buffer overflow exploit by creating a malicious crash.m3u file. as you can see the EIP pointer is overwritten by "A" but EBP hasn't changed. isn't EBP supposed to get ...
1
vote
2answers
333 views

Is exploit researching different from penetration testing

I'm confused by some terminology - reverse engineering seems to me to be pretty similar to exploit researching. I mean if you can reverse one program probably you will be able to find a vulnerability, ...
1
vote
3answers
185 views

How to know if a specific address is on stack or heap using immuntiy debugger?

I have an address (i.e. 0x010f73fc) and I need to know where this address exist ? is it on stack or heap ? In another way, how to differentiate between addresses that belong to the stack and ...
1
vote
1answer
591 views

Reverse TCP connection from exploited SearchIndexer.exe failing

I'm working on a tool that exploits SearchIndexer.exe on Windows 7 x86 and connects back to a metasploit multi/handler, using standard metasploit reverse TCP stagers. The exploit seems to function as ...
0
votes
1answer
171 views

Different types of segmentation faults in Linux [closed]

In Linux, when the NX-bit triggers the segmentation fault seems to be "error 15", whereas a more typical error, such as attempting to read from invalid memory, results in "error 7", (seen from dmesg ...
0
votes
0answers
16 views

The meaning of apparmor logs

What is the meaning of the fields in apparmor logs? Is there any document about it? Eg: apparmor="ALLOWED" operation="open" parent=32142 profile="/bin/su//null-1e" name="/proc/32143/attr/current" ...
0
votes
0answers
105 views

Google Chrome Crash Report Analysis

I am new to the field of crash analysis. I recently, by accident, happened to crash Google Chrome. I do not know the reason as to why the crash really happened. I'd like to know it in depth though. ...
-6
votes
1answer
1k views

How to find bugs/ vulnerabilities in web apps/sites? [closed]

What knowledge is needed? What software is to be used? How are the reports written? PS: Websites like facebook.com