For a better view check our [githubpage](https://bsempir0x65.github.io/CTF_Writeups/AngstromCTF_2022/#baby3) or [github](https://github.com/bsempir0x65/CTF_Writeups/tree/main/AngstromCTF_2022#baby3) out
![https://raw.githubusercontent.com/bsempir0x65/CTF_Writeups/main/AngstromCTF_2022/img/baby3.png](https://raw.githubusercontent.com/bsempir0x65/CTF_Writeups/main/AngstromCTF_2022/img/baby3.png)
So we were given a file that according to the creators does nothing. Instead of real reverse engineering we just started with the strings command to see if the flag is in plain text already present.```console└─$ strings chall/lib64/ld-linux-x86-64.so.2?;W(__cxa_finalize__libc_start_main__stack_chk_faillibc.so.6GLIBC_2.2.5GLIBC_2.4GLIBC_2.34_ITM_deregisterTMCloneTable__gmon_start___ITM_registerTMCloneTablePTE1u3UHactf{emhH <-- whats this hmmmpaidmezeHrodollarHstomaketHhischallHenge_amoHgus};*3$"GCC: (GNU) 11.2.0abi-note.c__abi_taginit.ccrtstuff.cderegister_tm_clones__do_global_dtors_auxcompleted.0__do_global_dtors_aux_fini_array_entryframe_dummy__frame_dummy_init_array_entrychall.c__FRAME_END___DYNAMIC__GNU_EH_FRAME_HDR_GLOBAL_OFFSET_TABLE___libc_start_main@GLIBC_2.34_ITM_deregisterTMCloneTable_edata_fini__stack_chk_fail@GLIBC_2.4__data_start__gmon_start____dso_handle_IO_stdin_used_end__bss_startmain__TMC_END___ITM_registerTMCloneTable__cxa_finalize@GLIBC_2.2.5_init.symtab.strtab.shstrtab.interp.note.gnu.property.note.gnu.build-id.note.ABI-tag.gnu.hash.dynsym.dynstr.gnu.version.gnu.version_r.rela.dyn.rela.plt.init.text.fini.rodata.eh_frame_hdr.eh_frame.init_array.fini_array.dynamic.got.got.plt.data.bss.comment```As you can see we were already lucky. We just needed to put these together and voila we had the flag actf{emhpaidmezerodollarstomakethischallenge_amogus}.So this way was a bit to easy so we wanted to understand what happens and actually nothing happens. The program just loads the flag into the memory and then exits. As you can see here:
![https://raw.githubusercontent.com/bsempir0x65/CTF_Writeups/main/AngstromCTF_2022/img/baby31.png](https://raw.githubusercontent.com/bsempir0x65/CTF_Writeups/main/AngstromCTF_2022/img/baby31.png)