> For the complete documentation index, see [llms.txt](https://kabinet.gitbook.io/ctf-writeup/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kabinet.gitbook.io/ctf-writeup/2025/defcon-cloud-village-2025/dumpster-dive-layer-0.md).

# Dumpster Dive Layer 0

<figure><img src="/files/4uGpSkzm5adRK2ZDCQfV" alt=""><figcaption></figcaption></figure>

We are given a AWS ECR public gallery link.

<figure><img src="/files/slcXaKznAZQCtJJZUYx8" alt=""><figcaption></figcaption></figure>

Trying to pull from it shows an error where there is no matching manifest for our architecture.

<figure><img src="/files/AFYGVbEuUkEpMLonuGig" alt=""><figcaption></figcaption></figure>

Lets try and check whats the ecpected architecture for the image.

<figure><img src="/files/FHMVCMfU2gwH0OCpAfie" alt=""><figcaption></figcaption></figure>

Since its requiring ppc64le architecture, which we dont have, we use skopeo to pull the cointainer instead.

```
skopeo copy --override-arch ppc64le \
  docker://public.ecr.aws/r7v3d6d9/ctf-dumpsterdive-layer0:latest \
  dir:./ctf-layer0
```

<figure><img src="/files/7XKPGfrOMznBmiSu4tYM" alt=""><figcaption></figcaption></figure>

Manually enumerating the docker images, we found the manifest file where they copied the flag

<figure><img src="/files/upqDDQfEiThHInYiPB4f" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/i1fFIZL5nqkuqYjzL2Dc" alt=""><figcaption></figcaption></figure>


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