We released new Pwndbg: https://github.com/pwndbg/pwndbg/releases/tag/2025.05.30 !

Among others it brings:
- New & improved kernel debugging commands (buddydump, msr, slab) and more x64 regs in context
- New command for dealing with armcm exceptions: dump-register-frame
- Disasm now shows an ✘ marker for emulated branches we know won't be taken
- Improved disasm for ARM, MIPS and LoongArch64 architectures
- Initial support for the IBM s390x architecture
- IDA sync integration fixes

And also cool portable one-liner installers:
$ curl -qsL 'https://install.pwndbg.re' | sh -s -- -t pwndbg-gdb
$ curl -qsL 'https://install.pwndbg.re' | sh -s -- -t pwndbg-lldb

Want to support us? Sponsor us at https://github.com/sponsors/pwndbg !

#pwning #gdb #ctfs #lldb #security #ctf #pwndbg

I will be giving a talk on Pwndbg open source development in ~1h on a local Python meeetup!

It will be livestreamed on: https://www.youtube.com/live/euK_S81Qnuo?si=EhZ-WhnP-4yZRElE

#ctf #gdb #pwndbg #lldb

Released new Pwndbg: 2025.04.18

It adds display of breakpoints in the disasm view, new libcinfo command, improves attachp & hexdump commands, UI, TUI and more. Also, command names use "-" istead of "_" now for consistency.

Read more and download it on https://github.com/pwndbg/pwndbg/releases/tag/2025.04.18 !

#pwndbg #gdb #binaryexploitation #ctf #security #tools

A call to memcpy() in a single binary that uses glibc may behave in 12 different ways depending on the features of the specific x86-64 CPU you run it on.

Here is a list of those impls in glibc:

https://github.com/bminor/glibc/blob/12a497c716f0a06be5946cabb8c3ec22a079771e/sysdeps/x86_64/multiarch/ifunc-impl-list.c#L1174-L1218

Fwiw this may matter a lot during binary exploitation. This was important in a challenge from PlaidCTF 2025. E.g. passing a negative (or: very huge) length allowed you to write past a buffer without a crash (the given implementation was not doing a wild copy).

#linux #binaryexploitation #ctf

We scored 1st place in the DiceCTF 2025 Quals cybersecurity competition with my team justCatTheFish 😼🐟 this weekend. We qualified for and will go to the finals in New York 🙂

Full scoreboard & challenges: https://ctf.dicega.ng/scores

I have written a blog post about null pointers on Linux:
https://disconnect3d.pl/2025/03/03/when-null-isnt-null-on-linux/

#security #c #cpp #programming #linux

Released Pwndbg 2025.02.19 with new commands for dumping Linux kernel nftables, initial LoongArch64 support and more!

See changelog on https://github.com/pwndbg/pwndbg/releases/tag/2025.02.19 !

#pwndbg #gdb #pwning #reverseengineering #binaryexploitation #kernel #debugging