kernel module version check bypass1、 举例说明2、 内核是怎么实现的3、 怎样去突破4、 总结1、 举例说明 Linux内核版本很多,升级很快,2个小内核版本中内核函数的定义可能都不一样,为了确保不一致的驱动程序导致kernel oops, 开发者加入了模块验证机制。它在加载内核模块的时候对模块进行校验, 如果模块与主机的一...
also reveal their parameters in /sys/module/${modulename}/parameters/. Some of these parameters may be changed at runtime by the command "echo -n ${value} > /sys/module/${modulename}/parameters/${parm}". The parameters listed below are only valid if certain kernel build options ...
提权可以参考上一篇文章,利用栈上的残留值来bypass kaslr。 exp #ifndef _GNU_SOURCE #define _GNU_SOURCE #endif #include <asm/ldt.h> #include <assert.h> #include <ctype.h> #include <errno.h> #include <fcntl.h> #include <linux/keyctl.h> #include <linux/userfaultfd.h> #include <poll.h...
硬件根据向量号0x80找到在中断描述符表中的表项,在自动切换到内核栈 (tss.ss0 : tss.esp0) 后根据中断描述符的 segment selector 在 GDT / LDT 中找到对应的段描述符,从段描述符拿到段的基址,加载到 cs ,将 offset 加载到 eip。最后硬件将用户态ss / sp / eflags / cs / ip / error code 依次压...
Kernel panic with following call traces. Raw BUG: unable to handle kernel paging request at ffffc900d1ad09c4 IP: [<ffffffffa05ec5f7>] _Z33gpfsIsCifsBypassTraversalCheckingv+0x7/0x10 [mmfs26] PGD 408041b067 PUD 13ff01b2067 PMD 17fe7366067 PTE 0 Oops: 0000 [#1] SMP last sysfs file...
A system crashed atdo_sys_open. do_sys_openinvoked bygsch_openat_hook_fnwhich is provided by third party modulegsch. Call Trace is like below. Raw [4301687.497556] BUG: unable to handle kernel paging request at ffffffffffff8a08 [4301687.498137] PGD 3b34c13067 P4D 3b34c13067 PUD 3b34c1506...
Tailored for Non-Malicious Use: Given its need for physical access and the fact that it does not persist after a reboot, unc0ver is unlikely to be employed in most malicious scenarios, like malware attacks. Instead, it serves more as a tool for users and developers to bypass Apple’s restr...
uf HvlEndSystemInterrupt 代码语言:javascript 代码运行次数:0 运行 AI代码解释 uf nt!KiEnableXSave 然后用得到的值减去起始地址得到我们所需的值,原理参考:https://h0mbre.github.io/HEVD_Stackoverflow_SMEP_Bypass_64bit/# 最后效果: 请严格遵守网络安全法相关条例!此分享主要用于学习,切勿走上违法犯罪的不...
The kernel version you've mentioned, 5.4.113-1.el7.elrepo.x86_64, suggests that you are using a kernel provided by the ELRepo repository for an Enterprise Linux 7 (RHEL 7 or CentOS 7) system and my understanding is that in kernel 5.4.113, pcrypt is not...
Calling a ZwXxx routine from user mode is not supported; instead, native applications (applications that bypass the Microsoft Win32 subsystem) should call the NtXxx equivalent of the ZwXxx routine. For a list of NtXxx routines, see NtXxx Routines. For a call to a ZwXxx routine from a ...