Self Destruct 💣

Final Points: 347

Description

Explore the virtual machine and you might just find the flag. Or a surprise. Maybe…

NOTE: The attachment is a VirtualBox image. Do not run it outside VirtualBox. It is recommended to backup the .vdi file before launching the VM.

VM Parameters: (VirtualBox) Type: Linux Version: Debian (32 bits) RAM: 1024MB Storage: attached .vdi file

Username: kashictf
Password: kashictf

Link -

Download Link {Download the game from here} ==> Self Destruct Debian.vdi

Writeup

On downloading the file, I ran the command

grep -r "KashiCTF{"

Which showed that this string existed inside the binary Self Destruct Debian.vdi

so I ran

grep -a "KashiCTF{" Self Destruct Debian.vdi

but this only gave the Part 1 of the flag “KashiCTF{r”

then by changing the command to

grep -a "Part" Self Destruct Debian.vdi

Which then gave the flag in Parts. Which gave the flag.

• Parts

{
  "Part_1": "KashiCTF{r",
  "Part_2": "m_rf_no_pr",
  "Part_3": "eserve_roo",
  "Part_4": "t_Am_1_Rig",
  "Part_5": "ht??_No_Er",
  "Part_6": "rht??_No_Er",
  "Part_7": "ed_Th0}"
}

Flag

KashiCTF{rm_rf_no_preserve_root_Am_1_Right??_No_Errht??_No_Ered_Th0}