Lichi Chen aldy120
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| #!/usr/bin/env bash | |
| readonly COLLECT_DIR="./log-collector" | |
| mkdir -p "${COLLECT_DIR}"/networking | |
| # test some network connectivity | |
| timeout 75 ping -A -c 10 amazon.com > "${COLLECT_DIR}"/networking/ping_amazon.com.txt | |
| timeout 75 mtr -rwzn -c 10 -T -P 443 cors.lichi-chen.com > "${COLLECT_DIR}"/networking/mtr-icmp-cors-lichi-chen.txt | |
| timeout 75 mtr -rwzn -c 10 cors.lichi-chen.com > "${COLLECT_DIR}"/networking/mtr-tcp-443-cors-lichi-chen.txt |
aldy120
/ dns-query.py
Created
July 16, 2022 15:28
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| Frame 12: 154 bytes on wire (1232 bits), 154 bytes captured (1232 bits) | |
| Ethernet II, Src: 0a:7b:c9:12:9d:92 (0a:7b:c9:12:9d:92), Dst: 0a:76:4b:e9:95:8d (0a:76:4b:e9:95:8d) | |
| Internet Protocol Version 4, Src: 172.31.0.2, Dst: 172.31.42.222 | |
| User Datagram Protocol, Src Port: 53, Dst Port: 46656 | |
| Domain Name System (response) | |
| Transaction ID: 0x6b40 | |
| Flags: 0x8180 Standard query response, No error | |
| Questions: 1 | |
| Answer RRs: 4 | |
| Authority RRs: 0 |
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| #!/usr/bin/env bash | |
| # OpenSSL requires the port number. | |
| SERVER=$1 | |
| DELAY=1 | |
| ciphers=$(openssl ciphers 'ALL:eNULL' | sed -e 's/:/ /g') | |
| echo Obtaining cipher list from $(openssl version). | |
| for cipher in ${ciphers[@]} |
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| import json | |
| import fibo | |
| def lambda_handler(event, context): | |
| fibo.fib2(1000) | |
| return { | |
| 'statusCode': 200, | |
| 'body': json.dumps('Hello from fibo 1000: ' + ' '.join([str(elem) for elem in fibo.fib2(100)]) ) | |
| } |
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| # Fibonacci numbers module | |
| def fib(n): # write Fibonacci series up to n | |
| a, b = 0, 1 | |
| while a < n: | |
| print(a, end=' ') | |
| a, b = b, a+b | |
| print() | |
| def fib2(n): # return Fibonacci series up to n |
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| [ec2-user@ip-172-31-42-222 ~]$ mtr --report-wide --tcp --aslookup --port 443 --report-cycles 50 --max-ttl 50 hinet.net | |
| Start: 2022-03-28T21:33:44+0000 | |
| HOST: ip-172-31-42-222.eu-west-1.compute.internal Loss% Snt Last Avg Best Wrst StDev | |
| 1. AS??? ??? 100.0 50 0.0 0.0 0.0 0.0 0.0 | |
| 2. AS??? ??? 100.0 50 0.0 0.0 0.0 0.0 0.0 | |
| 3. AS??? ??? 100.0 50 0.0 0.0 0.0 0.0 0.0 | |
| 4. AS??? ??? 100.0 50 0.0 0.0 0.0 0.0 0.0 | |
| 5. AS??? ??? 100.0 50 0.0 0.0 0.0 0.0 0.0 | |
| 6. AS??? 100.65.13.5 54.0% 50 0.4 1.9 0.4 12.0 3.2 | |
| AS??? 100.65.14.139 |
aldy120
/ openssl-incomplete-chain.txt
Created
March 25, 2022 20:39
openssl output for incomplete chain
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| ubuntu@ip-172-31-4-119:~$ openssl s_client -connect incomplete-chain.badssl.com:443 -servername incomplete-chain.badssl.com | |
| CONNECTED(00000003) | |
| depth=0 C = US, ST = California, L = Walnut Creek, O = Lucas Garron Torres, CN = *.badssl.com | |
| verify error:num=20:unable to get local issuer certificate | |
| verify return:1 | |
| depth=0 C = US, ST = California, L = Walnut Creek, O = Lucas Garron Torres, CN = *.badssl.com | |
| verify error:num=21:unable to verify the first certificate | |
| verify return:1 | |
| --- | |
| Certificate chain |
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| Function.prototype.__constructor_back = Function.prototype.constructor; | |
| Function.prototype.constructor = function() { | |
| if(arguments && typeof arguments[0]==='string'){ | |
| //alert("new function: "+ arguments[0]); | |
| if("debugger" === arguments[0]){ | |
| //arguments[0]="console.log(\"anti debugger\");"; | |
| //arguments[0]=";"; | |
| return | |
| } | |
| } |
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| [ec2-user@ip-172-31-42-222 ~]$ dig gmail.com TXT | |
| ; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.amzn2.5.2 <<>> gmail.com TXT | |
| ;; global options: +cmd | |
| ;; Got answer: | |
| ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60496 | |
| ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 | |
| ;; OPT PSEUDOSECTION: | |
| ; EDNS: version: 0, flags:; udp: 4096 |
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| aws sts assume-role --role-arn arn:aws:iam::32522793xxxx:role/admin-32522793xxxx --role-session-name xxx | |
| { | |
| "Credentials": { | |
| "AccessKeyId": "ASIAUXOIYM7XXDCJxxxx", | |
| "SecretAccessKey": "********", | |
| "SessionToken": ""*******************",", | |
| "Expiration": "2022-02-24T01:16:44+00:00" | |
| }, | |
| "AssumedRoleUser": { | |
| "AssumedRoleId": "AROAUXOIYM7XYUEUW****:asdf", |
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