ANSSI ECSC ~~ Challenges reverse ~~ ybab

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owned

.semèlborp ed resop suov sap tiarved en egnellahc eC

fichier baby sans extension

Nope, I won't give you the flag *that* easily!

strings baby

/lib64/ld-linux-x86-64.so.2
libc.so.6
exit
puts
printf
__cxa_finalize
__libc_start_main
GLIBC_2.2.5
_ITM_deregisterTMCloneTable
__gmon_start__
_ITM_registerTMCloneTable
=g
=j
AWAVI
AUATL
[]A\A]A^A_
ECSC{cdcd13c4c81a23a21506fa8efa5edff781e9fe80}
The flag is %s.
Nope, I won't give you the flag *that* easily!
;*3$"
GCC: (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
/usr/lib/gcc/x86_64-linux-gnu/7/include
/usr/include/x86_64-linux-gnu/bits
/usr/include
baby.c
stddef.h
types.h
libio.h
stdio.h
sys_errlist.h
__off_t
_IO_read_ptr
_chain
/home/julien/ECSC/challenges/reverse/baby
size_t
_shortbuf
GNU C11 7.3.0 -mtune=generic -march=x86-64 -g -fstack-protector-strong
forever_alone
_IO_2_1_stderr_
_IO_buf_base
long long unsigned int
long long int
_fileno
_IO_read_end
_flags
_IO_buf_end
_cur_column
_old_offset
_IO_marker
stdin
_IO_FILE_plus
_IO_write_ptr
sys_nerr
_sbuf
short unsigned int
_IO_save_base
_lock
_flags2
_mode
stdout
_IO_2_1_stdin_
_IO_write_end
_IO_lock_t
_IO_FILE
_pos
sys_errlist
_markers
unsigned char
short int
flag
_vtable_offset
_IO_2_1_stdout_
_next
__off64_t
_IO_read_base
_IO_save_end
__pad1
__pad2
__pad3
__pad4
__pad5
_unused2
stderr
argv
_IO_backup_base
argc
baby.c
main
_IO_write_base
crtstuff.c
deregister_tm_clones
__do_global_dtors_aux
completed.7696
__do_global_dtors_aux_fini_array_entry
frame_dummy
__frame_dummy_init_array_entry
baby.c
__FRAME_END__
__init_array_end
_DYNAMIC
__init_array_start
__GNU_EH_FRAME_HDR
_GLOBAL_OFFSET_TABLE_
__libc_csu_fini
_ITM_deregisterTMCloneTable
puts@@GLIBC_2.2.5
forever_alone
_edata
printf@@GLIBC_2.2.5
__libc_start_main@@GLIBC_2.2.5
__data_start
__gmon_start__
__dso_handle
_IO_stdin_used
__libc_csu_init
__bss_start
main
exit@@GLIBC_2.2.5
__TMC_END__
_ITM_registerTMCloneTable
__cxa_finalize@@GLIBC_2.2.5
.symtab
.strtab
.shstrtab
.interp
.note.ABI-tag
.note.gnu.build-id
.gnu.hash
.dynsym
.dynstr
.gnu.version
.gnu.version_r
.rela.dyn
.rela.plt
.init
.plt.got
.text
.fini
.rodata
.eh_frame_hdr
.eh_frame
.init_array
.fini_array
.dynamic
.data
.bss
.comment
.debug_aranges
.debug_info
.debug_abbrev
.debug_line
.debug_str

Bon bah le flag est inscrit dans l'output du strings, à savoir ECSC{cdcd13c4c81a23a21506fa8efa5edff781e9fe80}.