Technovanza 2022

image

Challenges

D3vel0peR

File

maxresdefault

• Given was a image

• I tried many steg tools but found nothing intresting

• Read the description, said the web develope has somthing for you

• The flag was in source code of the website ``

Flag

image

flag : TECHNO(lOv3_T3chn0vANZa)

Future

File

note (1)

• It's a cipher

• https://www.dcode.fr/futurama-alien-alphabet

Flag :  TECHNO(we_are_not_alone)

aquaman

Description

It was a long time ago when Aquaman had a small feast, but his friends refused to agree. He lost the photo; his friends want him to tell the date and time of when they ate. Aquaman roughly remembers the month and year to be knjwamujkkvbivznqjmpeye can u help him find the complete date and time. Flag Format: TECHNO(yyyy-mm-dd_hh-mm-ss)

SOlve

• See instagram

• They had lunch on sept 2018

• Used osintgram to find exact time

#flag : TECHNO(2018-09-27_19-14-46)

can you find the difference?

File

vjti_pic

SOlve

• Used strings to get the flag

image

# Flag : TECHNO(vjti_campus_I5_b34u7iFul)

Jumping Jack

• Was just bunch of base64 and base32 encrypted

Solve

╰─ echo "KMYUURCWNRLFKUZRMRHVI23YI5JTCWSUKJVXAS2SGBKTAVLLJZGFIRKKJRJGWMKYKUYDKS2WNRNFSU2WJZKFI2ZVKNKGWVS2KZVU4V2UGBFE6UTLNN4U22SKJNIWW6CIKZ5FMRCVKV2FGUSFLJDFK6SKKRKGYSSLKJVXIVKUIUYUUU3LLJDVCVSWJNHFK2CWKBKDAOKQKQYDS===" | base32 -d | base64 -d | base32 -d | base64 -d | base32 -d | base64 -d
adMin_S4yS_"1Ol"

# Flag : TECHNO(adMin_S4yS_"1Ol")

malwar3

• Given was a .docx file

• After i opened it.... it had PK which is initial bytes used to describe .zip files

• Rename

└─$ mv malwar3.docx mal.zip

##########################

└─$ unzip mal.zip
Archive:  mal.zip
  inflating: [Content_Types].xml     
  inflating: documentProps/app.xml   
  inflating: documentProps/core.xml  
   creating: word/_rels/
  inflating: word/_rels/document.xml.rels  
  inflating: word/file.xml           
  inflating: word/font.xml           
  inflating: word/settings.xml       
  inflating: word/styleSettings.xml  
   creating: word/theme/
  inflating: word/theme/theme1.xml   
  inflating: word/webSettings.xml    

SOlve

• Last line of word/file.xml had some characters

• <,s[-1i?Yl:24?-<+SG-->

• It was encoded with Ascii85

• Flag

# TECHNO(Tr0j4n_INjeCTeD)

landlord why u like dis?

• Extract all the flies using : sudo unsquashfs -f -d <directory-you-want-to-extract> <filename>

• Find key and cipher text

• Cipher text

    ╰─$ cat ciphertxt.enc  
OuWrlAKbKZjfRw11VWv81kq40ZHemgJKR39be3vVn9JodbKTGczpZPITPLWAJvDrv96rq46/BnPgY/+3S0SlbRUWFBZvsxwk6FcEKwsyT+Kr/0ng5Jx0sPKkMqSgHisTzyZoCUv3pfUYP587TXBaQz2MSSNIxWJ4fUkbjlbKXas=
{but where is the key?}

• Private key

 ╰─$ cat private.key
-----prIv473_Key-----
MIICeAIBADANBgkqhkiG9w0BAQEFAASCAmIwggJeAgEAAoGBALtdcbD3walQVFxgTd8uAxgVarRPtgTHTI7CDnAHVUvvYzDRyZcE31vagVG3StncJiqc8Nv2yTYRTh5qFLg3192BL3W5vo6Qc7DqHQxja+/21sAnbpQng7zc9yvH4fh6LLQA/rDS14hrk01PJH96S+cghlbYXPqL/ygrbuTm7pchAgMBAAECgYEAn8Dp+lEVT88NTwJSA1QREUzZgUph0Ss5TJOLidvGz4saUPre3qQp6gChuNIGwUEjTbwo5fRC1ZXlvKsIZZY/t8c16yolslJ6TdxHVjwI/i4vVpYy/PKwCw2VTpL+3pW/4rv8KPHgiAl4B4+tLJxAIB74TDwuwLNmHD3H9kgLNN0CQQDzHS9n0ZmjszwaGdCPkAvL6G42bMeOBViiwRrMAKFVBDnbYSVIVZCeblYwHW7Bf0BGzn7rlqsz+XrRrmID0mUfAkEAxUvM+orA+x2vTLhUy0pzk4B/Xzsrpl4GjyzCzVrVpYGlWEkOetQFGwNOYOYt4njuThPNsnoxFDJNCbASvHk7vwJBAIiJwKEXJ6m3tS6XhvnKFcX8kUGB0IWj3QbzWyBtzi4YRIJAShcY7zL7lu5I6XZFCI171e5sXVTAbckrniK1XFMCQQCeqPGDPdgpWVriyI2wGgRNxxUnIS9eD9kYhHd3qyeKfHLaR430atJcQdFjDVgy+usxMK3HbIpRYo4fT1AR7zCDAkAGdSuElZW+RVR82U+ulz9f1yfl0DrYWsFeWQ4P5RO8x8Dtl+FMv/GTpJlRawNdgGq1BYcJgWJjHNdYh19UFQNz
-----end----

• There was some error in key

• https://www.samltool.com/format_privatekey.php repairs the key

• Final private key

╰─$ cat private.key

-----BEGIN RSA PRIVATE KEY-----
MIICeAIBADANBgkqhkiG9w0BAQEFAASCAmIwggJeAgE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-----END RSA PRIVATE KEY-----

Solve

• Used openssl to solve the RSA

└─$ openssl rsautl -decrypt -inkey private.key -in ciphertxt.enc 
b1NwA1K_15_u5eFu1

• Flag

# Flag : TECHNO(b1NwA1K_15_u5eFu1)