diff options
Diffstat (limited to 'users/wpcarro/scratch/picoctf/challenge_166')
4 files changed, 70 insertions, 0 deletions
diff --git a/users/wpcarro/scratch/picoctf/challenge_166/ende.py b/users/wpcarro/scratch/picoctf/challenge_166/ende.py new file mode 100644 index 0000000000..08395f9209 --- /dev/null +++ b/users/wpcarro/scratch/picoctf/challenge_166/ende.py @@ -0,0 +1,60 @@ + +import sys +import base64 +from cryptography.fernet import Fernet + + + +usage_msg = "Usage: "+ sys.argv[0] +" (-e/-d) [file]" +help_msg = usage_msg + "\n" +\ + "Examples:\n" +\ + " To decrypt a file named 'pole.txt', do: " +\ + "'$ python "+ sys.argv[0] +" -d pole.txt'\n" + + + +if len(sys.argv) < 2 or len(sys.argv) > 4: + print(usage_msg) + sys.exit(1) + + + +if sys.argv[1] == "-e": + if len(sys.argv) < 4: + sim_sala_bim = input("Please enter the password:") + else: + sim_sala_bim = sys.argv[3] + + ssb_b64 = base64.b64encode(sim_sala_bim.encode()) + c = Fernet(ssb_b64) + + with open(sys.argv[2], "rb") as f: + data = f.read() + data_c = c.encrypt(data) + sys.stdout.write(data_c.decode()) + + +elif sys.argv[1] == "-d": + if len(sys.argv) < 4: + sim_sala_bim = input("Please enter the password:") + else: + sim_sala_bim = sys.argv[3] + + ssb_b64 = base64.b64encode(sim_sala_bim.encode()) + c = Fernet(ssb_b64) + + with open(sys.argv[2], "r") as f: + data = f.read() + data_c = c.decrypt(data.encode()) + sys.stdout.buffer.write(data_c) + + +elif sys.argv[1] == "-h" or sys.argv[1] == "--help": + print(help_msg) + sys.exit(1) + + +else: + print("Unrecognized first argument: "+ sys.argv[1]) + print("Please use '-e', '-d', or '-h'.") + diff --git a/users/wpcarro/scratch/picoctf/challenge_166/flag.txt.en b/users/wpcarro/scratch/picoctf/challenge_166/flag.txt.en new file mode 100644 index 0000000000..1c4d245811 --- /dev/null +++ b/users/wpcarro/scratch/picoctf/challenge_166/flag.txt.en @@ -0,0 +1 @@ +gAAAAABgUAIWsYfVayn4m1dKle5X91HrZW_MIRAW4ILPgf4gD6jalLF4PysYB5_YTpDwclcQPqw_0xTxanpJ_Urx5Vi6mTeBA_rWPA_WQLvVXXHp1mG3EpOgY8Na1_NIAfc9LceH_L2o \ No newline at end of file diff --git a/users/wpcarro/scratch/picoctf/challenge_166/pw.txt b/users/wpcarro/scratch/picoctf/challenge_166/pw.txt new file mode 100644 index 0000000000..a4c1c7ae66 --- /dev/null +++ b/users/wpcarro/scratch/picoctf/challenge_166/pw.txt @@ -0,0 +1 @@ +67c6cc9667c6cc9667c6cc9667c6cc96 diff --git a/users/wpcarro/scratch/picoctf/challenge_166/shell.nix b/users/wpcarro/scratch/picoctf/challenge_166/shell.nix new file mode 100644 index 0000000000..85d3865a51 --- /dev/null +++ b/users/wpcarro/scratch/picoctf/challenge_166/shell.nix @@ -0,0 +1,8 @@ +{ pkgs, ... }: + +let + python = pkgs.python3.withPackages (pypkgs: with pypkgs; [ + cryptography + ]); +in +python.env |