benquike

generated  Oct 19, 2022 15:09:11
system     Debian GNU/Linux rodete Linux 5.18.16-1rodete1-amd64 x86_64
emacs      28.1 ~/.emacs.d/
doom       3.0.0-pre PROFILE=_@0 HEAD -> master, origin/master, origin/HEAD 9f22a0a2a 2022-10-07 19:48:23 +0200 ~/.doom.d/
shell      /usr/bin/zsh
features   ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY PDUMPER
	   PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS X11 XDBE XIM XPM GTK3 ZLIB
traits     batch server-running
modules    :config use-package :completion company vertico :ui doom doom-dashboard hl-todo modeline ophints (popup +defaults) (vc-gutter +pretty) vi-tilde-fringe workspaces
	   :editor file-templates fold snippets :emacs dired electric undo vc :checkers syntax :tools (eval +overlay) lookup magit :lang emacs-lisp markdown org sh :config

benquike

@_ZTVN5blink25WebGLRenderingContextBaseE = unnamed_addr constant { [102 x i8*], [6 x i8*], [14 x i8*] } { [102 x i8*] [i8* null, i8* null, i8* bitcast (i8* (%"class.blink::ScriptWrappable"*)* @_ZNK5blink15ScriptWrappable18NameInHeapSnapshotEv to i8*), i8* bitcast (void (%"class.blink::WebGLRenderingContextBase"*)* @_ZN5blink25WebGLRenderingContextBaseD1Ev to i8*), i8* bitcast (void (%"class.blink::WebGLRenderingContextBase"*)* @_ZN5blink25WebGLRenderingContextBaseD0Ev to i8*), i8* bitcast (i1 (%"class.blink::ScriptWrappable"*)* @_ZNK5blink15ScriptWrappable18HasPendingActivityEv to i8*), i8* bitcast (i1 (%"class.blink::ScriptWrappable"*)* @_ZNK5blink15ScriptWrappable17HasEventListenersEv to i8*), i8* bitcast (void (%"class.blink::WebGLRenderingContextBase"*, %"class.blink::Visitor"*)* @_ZNK5blink25WebGLRenderingContextBase5TraceEPNS_7VisitorE to i8*), i8* bitcast (void ()* @__cxa_pure_virtual to i8*), i8* bitcast (%"class.v8::Object"* (%"class.blink::ScriptWrappable"*, %"class.v8::Object"*, %"class.v8::Object"

benquike

2020-09-29 18:05:58.360 6364-6364/org.chromium.chrome D/cr_FRAppRestrictionInfo: [FirstRunAppRestrictionInfo.java:184] Policy received. Runtime: [77], result: [false]
2020-09-29 18:05:58.411 6364-6397/org.chromium.chrome D/cr_LibraryLoader: [LibraryLoader.java:494] Loading with the System linker.
2020-09-29 18:05:58.415 6364-6397/org.chromium.chrome A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 6397 (Thread-2), pid 6364 (chromium.chrome)
2020-09-29 18:05:58.427 6364-6364/org.chromium.chrome I/zygote64: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
2020-09-29 18:05:58.427 6364-6364/org.chromium.chrome I/zygote64:     at void androidx.core.view.ViewCompat.setAccessibilityDelegate(android.view.View, androidx.core.view.AccessibilityDelegateCompat) (ViewCompat.java:714)
2020-09-29 18:05:58.427 6364-6364/org.chromium.chrome I/zygote64:     at void 

benquike

Setting up Qemu with a tap interface

There are two parts to networking within QEMU:

• The virtual network device that is provided to the guest (e.g. a PCI network card).
• The network backend that interacts with the emulated NIC (e.g. puts packets onto the host's network).

Example: User mode network

benquike

                                  sym.get_4  720 0x804cd60 | UNMATCH  (0.908333) | 0x804cd60   720 sym.get_4
                             sym.imp.calloc    6 0x80493c0 |   MATCH  (1.000000) | 0x80493c0     6 sym.imp.calloc
                      sym.imp.__ctype_b_loc    6 0x80493b0 |   MATCH  (1.000000) | 0x80493b0     6 sym.imp.__ctype_b_loc
                      sym.imp.__assert_fail    6 0x80493a0 |   MATCH  (1.000000) | 0x80493a0     6 sym.imp.__assert_fail
                              sym.imp.close    6 0x8049390 |   MATCH  (1.000000) | 0x8049390     6 sym.imp.close
                             sym.imp.strtol    6 0x8049380 |   MATCH  (1.000000) | 0x8049380     6 sym.imp.strtol
                             sym.imp.random    6 0x8049370 |   MATCH  (1.000000) | 0x8049370     6 sym.imp.random
                              sym.imp.abort    6 0x8049360 |   MATCH  (1.000000) | 0x8049360     6 sym.imp.abort
                      sym.imp.feof_unlocked    6 0x8049350 |   MATCH  (1.000000) | 0x8049350     6 sym.im

benquike

// SPDX-License-Identifier: GPL-2.0
#define pr_fmt(fmt) "kcov: " fmt

#define DISABLE_BRANCH_PROFILING
#include <linux/atomic.h>
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/types.h>
#include <linux/file.h>

benquike

# INSTALL INSTRUCTIONS: save as ~/.gdbinit
#
# DESCRIPTION: A user-friendly gdb configuration file.
#
# REVISION : 7.3 (16/04/2010)
#
# CONTRIBUTORS: mammon_, elaine, pusillus, mong, zhang le, l0kit,
#               truthix the cyberpunk, fG!, gln
#
# FEEDBACK: https://www.reverse-engineering.net

benquike

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a