Simplify strace file-read

This commit is contained in:
Andrea Cardaci 2021-05-03 19:45:11 +02:00
parent 6f9d02501e
commit 254db17d9c

View File

@ -1,29 +1,10 @@
--- ---
functions: functions:
file-write: file-write:
- description: write DATA to $WFILE - description: The data to be written appears amid the syscall log, quoted and with special characters escaped in octal notation. The string representation will be truncated, pick a value big enough. More generally, any binary that executes whatever syscall passing arbitrary data can be used in place of `strace - DATA`.
code: | code: |
LFILE=$(mktemp --suffix=.s) LFILE=file_to_write
WFILE=file-to-write strace -s 999 -o $LFILE strace - DATA
elf=$(mktemp -u)
vi $LFILE
;#####CODE START#####
.global _start
_start:
.intel_syntax noprefix
mov rax,2
lea rdi,[rip+DATA]
mov rsi, 0
syscall
mov rax,60
mov rdi,0
syscall
DATA:
.string "THIS IS THE DATA NEED TO BE WRITTEN USING STRACE"
;#####CODE END#####
:wq
gcc -nostdlib --static $LFILE -o $elf
strace -o $WFILE $elf
shell: shell:
- code: strace -o /dev/null /bin/sh - code: strace -o /dev/null /bin/sh
suid: suid: