Random Commands
Last updated
Last updated
grep -oE "flagF{.*}"
-o, --only-matching
Print only the matched (non-empty) parts of a matching line, with each such part on a separate output line.
-E, --extended-regexp
Interpret PATTERNS as extended regular expressions (EREs, see below).
# bc: basic calculator
$ echo "scale=2 ; $TOTAL_DST / $TOTAL_FILES" | bc
$ bc <<<"scale=2; $var1 / $var2"
$ echo "12+5" | bc
17
# jq for json manipulation
$ TOTAL_FILES=$(cat incidents.json | jq '.[][] .file_hash' | tr -d '"' | sort | uniq -c | wc -l)
$ TOTAL_DST=$(cat incidents.json | jq '.[][] .ticket_id' | tr -d '"' | sort | uniq -c | wc -l)
lsattr - list existing file attributes
$ lsattr /bin/nsh
----i---------e---- /bin/nsh
chattr - change attribute
$ sudo chattr -i /bin/nsh
$ lsattr /bin/nsh
--------------e---- /bin/nsh
# shows all running processes and the command lines used to startup the processes
ps -eafw
# ooked up google bots @https://support.google.com/webmasters/answer/1061943?hl=en
# chose user agent "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" to pretend to be google
$ curl -s --user-agent "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" http://2018shell.picoctf.com:46162/flag | grep -oE "picoCTF{.*}"
picoCTF{s3cr3t_ag3nt_m4n_ac87e6a7}
$ readelf -h be-quick-or-be-dead-1
ELF Header:
Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x4005a0
Start of program headers: 64 (bytes into file)
Start of section headers: 7312 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 9
Size of section headers: 64 (bytes)
Number of section headers: 31
Section header string table index: 28
EOG(1) General Commands Manual EOG(1)
NAME
eog - a GNOME image viewer
SYNOPSIS
eog [options] files...
paste - merge lines of files
$ cat scores | sort | uniq -c | sort -nk1,1 | awk '{print $2}' | paste -sd,
4730,4755,4780,4785,4855,4864,4879,4884,4905,4930,4994,5003,5030,5054,5094,5124
nl - number lines of files
$ searchsploit ProFtpd 1.3.5 | nl | sed -n '4,6p'
4 ProFTPd 1.3.5 - 'mod_copy' Command Execution (Metasploit) | linux/remote/37262.rb
5 ProFTPd 1.3.5 - 'mod_copy' Remote Command Execution | linux/remote/36803.py
6 ProFTPd 1.3.5 - File Copy | linux/remote/36742.txt