NX-stack bypass w(1) Local Root Exploit Realization <3 - Pt. 19
Woo-Hoo. I’m finally ready to release source code :D
Category: C
Uncovering ‘W(1)’ Heap Overflow Exploit — Pt 7
Messing with programs I learned that there is a 8-byte window after the buffer, where the first 4 actually “say” something.. Don’t know what yet.. but all it takes is that first byte to be overwritten AND a subsequent call …
File Descriptors – More than Meets the Eye – Pt. 3
A search on “what is a file descriptor” : http://en.wikipedia.org/wiki/File_descriptor “In computer programming, a file descriptor (FD) is an abstract indicator for accessing a file” — the “file” keyword is clickable and it goes on to compare “files” to “documents” …
File Descriptors – More than Meets the Eye – Pt. 3 Read more »
Learning NameFS, MDB — Pt. II
Here is an important excerpt from Solaris Internals, present in both the old version and the new (up to Solaris 10):
Going after an undocumented Local Privilege Escalation OS vulnerability
First thing’s first.. getting started with Solaris 8 mdb, a kernel debugging utility. a modular debugger. The vulnerability is in NameFS, according to these articles: Sun Bug Id# 6581308 https://blogs.oracle.com/sunsecurity/entry/sun_alert_237986_a_security http://dl.packetstormsecurity.net/0808-advisories/sa31356.txt http://www.securityfocus.com/bid/30513/discuss Good hint here: http://www.rapid7.com/db/vulnerabilities/sunpatch-114984
Stay out of the logs — /var/log/auth.log
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 …
Memory Disclosure Pt. VIII
This might be useful as some sort of binary signature in System(). /var/adm/messages is where the stack-execution notice comes up. I don’t know if the SIGPIPE error could possibly produce a message in /var/adm/messages, or some other log?? let’s see…. …
Smashing the Stack+Data sections PT. VII
Remote Info. Disclosure for LibC Today, I am seeking information disclosure through a global variable buffer overflow, which conveniently overflows into a long chain of data structures purely char* . I use this technique I am developing to obtain disclosure …
Hacking Apply — Pt. VI
./pty_apply_final is my latest pty program :) uses CTRL-S to fluctuate around the stack space, starting from the middle and then alternating up and down the size of the NOPsled -16 for being safe. works on Blade72 with the following …
Hacking Apply – Pt. V
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 …