PROBLEM: the auth.log gets appended to after logging out… Oct 24 00:38:23 gateway sshd[1801]: pam_unix(sshd:session): session closed for user root You can erase all other traces but not that… Let’s try adding a process right before logging out, and NOHUP’ing …
crucial address: right after the gets() in Acct: 0x11518 The exploit wasn’t working. The segfault was caused by another thing. Reg mess. Luckily, the only reg we need to restore to normal is %o3 must put a good value into …
First was to obtain the source code from blade72, /sources/apply-1.2 This wasn’t advertised, I happened to be digging around the filesystem one day and accidently stumbled upon it :) fortunately it’s pre-compiled.. I move the sources to my own box.. …
Now let’s start perfecting our exploit: STACK RANGE 0xFFBEE000 . . 0xFFBEE800 . . 0xFFBEF000 . . 0xFFBEF800 . 0xFFBF0000 The above is the typical Stack range for a 32-bit sparc app in 64-bit kernel. That’s as specific as I …
SO, back to exploiting the userland gets() function. Vulnerable Test Prog #include <stdio.h> unsigned long get_sp( void ) { __asm__("or %sp,%sp,%r1"); // %r1 may have to be %i0 in some circumstances?? weirdness.. } void copy( ){ char buf[256]; gets(buf); } …
Holy Mother of Pearl — SPARC Exploitation Excerpts! Read more »
After patching my /bin/bash with https://shellshocker.net/ scripts, I noticed some odd things. When I did an ssh -X, I would see this: sh: line 6: `BASH_FUNC_rvm_debug%%’: not a valid identifier Then X would start up after performing an X app, and …
Find all Suid programs on disk find -follow -user root -perm -4000 -exec ls -lLdb {} \; 2>/dev/null Example Output -r-sr-xr-x 1 root 7240 Apr 10 2003 /usr/lib/utmp_update -r-s–x–x 1 root 19696 Oct 29 2003 /usr/lib/lp/bin/netpr -r-s–x–x 1 root 6848 …
Finding all suid programs on Sparc machine leads to Pwnage Read more »
The hype around the ShellShock bash exploit is circulating everywhere. Some have proven methods of: BAD DHCP server Remote code execution in CGI scripts However, most research suggests that the SSH daemon is only susceptible to the shell shock exploit …
[POC] [Shellshock] Bash SSHD PreAuth Remote Exploit Read more »