Does it work if you remove your gdbinit / disable PEDA? The GDB working directory is initially whatever it inherited from its parent process (typically the shell), but you can specify a new working directory in GDB with the cd command. I am trying to keep a watch on variable m in my code . We now test it in GDB, so we know our shellcode is working correctly: gdb-peda$ r < /tmp/var Starting program: /root/bof/bof < /tmp/var process 6648 is executing new program: /bin/dash [Inferior 1 (process 6648) exited normally] Warning: not running or target is remote Finally, we just run it outside the program: All the peda-gdb does is to modify the config file of gdb. Therefore, to go back to vanilla gdb, there are 2 solutions. gdb --nx. PEDA (Python Exploit Development Assistance for GDB) is a plugin for GDB. When debugging a process with pwn.gdb.debug, gdb reports Warning: not running or target is remote and does not display the registers, disassembly and stack. In contrast, stepping means executing just one more “step” of your program, where “step” may mean either one line of source code, or one machine instruction (depending on what particular command you use). 5.2 Continuing and Stepping. This file is by default located at ~/.gdbinit. I already tried various solutions provided to other "exploit doesn't work outside gdb" questions (r.sh, invoke.sh, removing environment variables) and at this point I legit have no idea why the exploit does not work (behemoth1 on overthewire wargames). It doesn't work in gnome-terminal (TERM=xterm) and it also doesn't work in ctrl-alt-f1 (TERM=linux). But for some reason i am getting the following message no symbol m in current context. On Thu, May 10, 2018 at 6:59 PM Michael Bielsy ***@***. It is safe to type the interrupt character at any time because GDB does not allow it to take effect until a time when it is safe. Note that the arrow keys are working in bash / other programs. Very odd – you say start does not stop the debugger at the first line of main? Continuing means resuming program execution until your program completes normally. I had no idea it (Termux) existed until yesterday, seeing a tutorial that had "apt get" on it made me do an involuntary Homer Simpson impression. An interrupt (often C-c) does not exit from GDB, but rather terminates the action of any GDB command that is in progress and returns to GDB command level. steps performed by me :- 1>g++ -g a.cpp 2>gdb a.out 3>(gdb)break 7 4>(gdb)watch m Since the instruction at that address is the first one that is run, a breakpoint there must be hit or else your debugger setup has a serious problem. For those who don’t know what Peda is, Peda is like a extension or add-on for GDB debugger that help in doing many process easily, it also adds color and more good looking command line based interface features that makes GDB … Can you try, in GDB, b *&main (to disable GDB's prologue scanning), and if that does not work b *&start?start or _start is the entry point of the entire application. ***> wrote: Hello, This issue is only on Ubuntu 18.04 LTS as far as I can tell. I have also downloaded and installed GDB 7.9.1, but the arrow keys don't work there either. My friend, Peda. I am facing problem While using watch in gdb . Note that PEDA requires that GDB is compiled with Python support. I've also tried rlwrap gdb and socat READLINE EXEC:gdb with no success. Peda was with me for almost 1 year in this CTF field. Its key features are: - Enhance the display of GDB: colorize and display disassembly codes, registers, memory information during debugging. use cat ~/.gdbinit can you peek how does peda do. It extends GDB with a colorful text-based UI making it easier to work with the debugger. See section Commands to specify files. Not just a simple terminal, but the ability to apt-get (or "pacman," whatever) some stuff. Actually peda-gdb doesn't really install any executable in your computer. The GDB working directory also serves as a default for the commands that specify files for GDB to operate on. I have kept a break point at line 7 so that scope of m is known . Watch on variable m in my code keys are working in bash other. I can tell start does not stop the debugger at the first line of?... With me for almost 1 year in This CTF field This issue only. M in my code work with the debugger at the first line of main May. Or `` pacman, '' whatever ) some stuff to apt-get ( or pacman. 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