Tagged Questions
-4
votes
1answer
38 views
Using a loop to output aAbBcCdD…zZ in assembly language [closed]
I can only develop a code that outputs a-zA-Z. What I need is they have to be alternate.
Here is the code that I have:
mov AH,02
mov CX,1A
mov DL,61
int 21
inc DL
loop ****
mov CX,1A
mov DL,41
...
0
votes
1answer
31 views
GDB disassembly uses inconsistent register naming
I'm debugging/disassembling a very simply C program I wrote just for learning purposes. However, I notice that GDB appears to be using inconsistent notation for the registers between the disassembled ...
-1
votes
1answer
30 views
book about linking, loading and real programming stuff [closed]
I am looking for a book that teaches all the stuff a real programmer needs to know.
How the executable is structured, how works the linking process and the loading one..
I need to understand all ...
0
votes
0answers
48 views
Executing segment codes from MASM with JMP
I would like to execute the following commands in MASM:
jmp far PTR 0:61Dh
jmp far ptr 2000h:0
jb short near ptr 106h
The first two are producing error A2206: missing operator in expression
...
0
votes
0answers
22 views
What is the difference between searching for intermodular calls and searching for names/labels in OllyDBG?
What is the difference between searching for intermodular calls and searching for names/labels in OllyDBG? As far as I can tell, it looks like searching for names just finds the place where a library ...
0
votes
0answers
19 views
It it possible to inspect the contents of memory using Nemiver while debugging assembly programs?
I am new to gdb and Nemiver. I have written an assembly level program, compiled with nasm -g and have loaded my program into Nemiver using the --just-load argument.
I have a variable: a resq 1000, an ...
-1
votes
0answers
41 views
Debug iPhone App in XCode
Anyone know what does this error mean, anyone can guide me how to debug from here ?
I have a IP camera app running, which display streaming video from the ipcamera.
When I click power button (off ...
0
votes
2answers
28 views
Editing the memory and duplicating actions of a PC game?
There is a single player PC game with an in-game console which allows users to execute commands and set variables. My goal is to be able to, with an external program, execute commands as if they were ...
0
votes
1answer
33 views
Nasm on Mac OS X - how to compile and read the debug
I'm trying to learn assembly and I'm using Nasm v2.10.07 on Mac OS X (Snow Leopard).
I can compile, but I need to read the Debug file, that is a .o file.
This is what I compile:
global _main
...
2
votes
1answer
49 views
Having Issue with KDbg degugger and assembly
I have just started using KDbg and am having a hard time finding the answer to my question. I open a file in KDbg (I opened an executable written in assembly), there is a pop up that says
GDB: ...
1
vote
1answer
48 views
How to interpet the EFL in OllyDbg?
What is and how to interpret the EFL under registers using OllyDbg?
What is NO, NB, E, NE, BE, A, NS ,PO, GE, G, …
Example:
EFL 00000246 (NO,NB,E,BE,NS,PE,GE,LE)
My futile decipher:
00000246 ...
0
votes
1answer
45 views
Qemu debugging suddenly produces huge number of random instructions
I'm trying to make a very simple boot program, but I'm having problems debugging it. I'm using QEMU and connecting with GDB like this:
(gdb) set architecture i8086
(gdb) target remote localhost:1234
...
0
votes
1answer
103 views
Code highlighting is not working on OllyDbg
I am a new user of OllyDbg and I cannot find a way to highlight the ASM code. I have checked the settings and it looks like the configuration is correct. Also, I have tried two versions of OllyDbg ...
1
vote
1answer
42 views
Alternative to the old DEBUG.com [closed]
Im unable to find anything on my own, but im searching for a Windows 7 version of the old DEBUG that came with xp,me & all the other great Windows version's.
Im wanting to follow along with a ...
1
vote
0answers
111 views
Breakpoint handling in another process
Following advices given in Read eax register , I wrote a simple debugger using winapi.
My objective is to read the eax register each time after an assembly instruction is executed in another thread.
...
