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https://github.com/mattnotmax/cyberchef-recipes

A list of cyber-chef recipes and curated links
https://github.com/mattnotmax/cyberchef-recipes

cyberchef cyberchef-recipes data-manipulation dfir incident-response malware regular-expression

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A list of cyber-chef recipes and curated links

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README 

        
![cyberchef_banner_1500](logo/cyberchef_banner_1500.png)



CyberChef is the self-purported 'Cyber Swiss-Army Knife' created by GCHQ. It's a fantastic tool for data transformation, extraction & manipulation in your web-browser.



Full credit to @GCHQ for producing the tool. See: https://gchq.github.io/CyberChef/



# General Tips



- Download CyberChef and run it entirely client-side. It doesn't need an internet connection except for certain operations. That way all your data is safe.

- Don't try and shoe-horn CyberChef into something that it can't do. It can do a lot but it's not a fully fledged programming language!



# Useful Regular Expressions



Mastering regular expressions are key to making the most of data manipulation in CyberChef (or any DFIR work). Below are some regexs that I keep coming back to.  



## Extracting Encoded Data



- Extract Base64: `[a-zA-Z0-9+/=]{30,}`  

    - Here '30' is an arbitrary number that can be adjusted according to the script.  

![base64](screenshots/base64.png)



- Extract Hexadecimal: `[a-fA-F0-9]{10,}`

    - This could also be adjusted to {32} (MD5), {40} (SHA1), {64}, SHA256 to extract various hashes

![hex](screenshots/hex.png)



- Extract Character Codes: `[\d]{2,3}(,|’)`

    - In this example it would extract character codes in the format ('30, 40, 50, 60')

![charcode](screenshots/charcode.png)



## Lookaheads & Lookbehinds



- Positive Lookbehind: `(?<=foo)(.*)`

    - Extract everything after 'foo' without including 'foo'

- Positive Lookahead: `^.*(?=bar)`

    - Extract everything before 'bar' without including 'bar'

- Lookahead/behind Combo: `(?<=')(.*?)(?=')`

    - Extract everything between ' and '

![combo](screenshots/combo.png)



## Working with APIs and CyberChef



CyberChef provides an operation HTTP Request (see Recipe 22) which allows HTTP requests to external resources. Due to Same Origin Policy (SOP) or lack of Cross-Origin Resource Sharing configuration many do not work. SOP is a security measure in modern browsers which prevents you from reading cross-site responses from servers which don't explicitly allow it via CORS. Check out [@GlassSec's talk on CyberChef](https://www.osdfcon.org/presentations/2019/Jonathan-Glass_Cybersecurity-Zero-to-Hero-With-CyberChef.pdf) which includes tips to boot Chrome without web-security to enable HTTP requests to otherwise restricted APIs (like Virus Total)



# CyberChef Recipes



Some example CyberChef recipes:  



[Recipe 1: Extract base64, raw inflate & beautify](#recipe-1---extract-base64-raw-inflate-and-code-beautify)



[Recipe 2: Invoke Obfuscation](#recipe-2---invoke-obfuscation)



[Recipe 3: From CharCode](#recipe-3---from-charcode)



[Recipe 4: Group Policy Preference Password Decryption](#recipe-4---group-policy-preference-passwords)



[Recipe 5: Using Loops and Labels](#recipe-5---using-loops--labels)



[Recipe 6: Google ei Timestamps](#recipe-6---google-ei-timestamp)



[Recipe 7: Multi-stage COM scriptlet to x86 assembly](#recipe-7---com-scriptlet-to-disassembled-x86-assembly)



[Recipe 8: Extract hexadecimal, convert to hexdump for embedded PE file](#recipe-8---extract-hexadecimal-convert-to-hexdump-for-embedded-pe-file)



[Recipe 9: Reverse strings, character substitution, from base64](#recipe-9---reverse-strings-character-substitution-from-base64)



[Recipe 10: Extract object from Squid proxy cache](#recipe-10---extract-object-from-squid-proxy-cache)



[Recipe 11: Extract GPS Coordinates to Google Maps URLs](#recipe-11---extract-gps-coordinates-to-google-maps-urls)



[Recipe 12: Big Number Processing](#recipe-12---big-number-processing)



[Recipe 13: Parsing DNS PTR records with Registers](#recipe-13---parsing-dns-ptr-records-with-registers)



[Recipe 14: Decoding POSHC2 executables](#recipe-14---decoding-poshc2-executables)



[Recipe 15: Parsing $MFT $SI Timestamps](#recipe-15---parsing-mft-si-timestamps)



[Recipe 16: Decoding PHP gzinflate and base64 webshells](#recipe-16---decoding-php-gzinflate-and-base64-webshells)



[Recipe 17: Extracting shellcode from a Powershell Meterpreter Reverse TCP Script](#recipe-17---extracting-shellcode-from-a-powershell-meterpreter-reverse-tcp-script)



[Recipe 18: Recycle Bin Parser with Subsections and Merges](#recipe-18---recycle-bin-parser-with-subsections-and-merges)



[Recipe 19: Identify Obfuscated Base64 with Regular Expression Highlighting](#recipe-19---identify-obfuscated-base64-with-regular-expression-highlighting)



[Recipe 20: Using Yara rules with deobfuscated malicious scripts](#recipe-20---using-yara-rules-with-deobfuscated-malicious-scripts)



[Recipe 21: Inline deobfuscation of hex encoded VBE script attached to a malicious LNK file](#recipe-21---inline-deobfuscation-of-hex-encoded-vbe-script-attached-to-a-malicious-lnk-file)



[Recipe 22: JA3 API search with HTTP Request and Registers](#recipe-22---ja3-api-search-with-http-request-and-registers)



[Recipe 23: Defeating DOSfuscation embedded in a malicious DOC file with Regular Expression capture groups](#recipe-23---defeating-dosfuscation-embedded-in-a-malicious-doc-file-with-regular-expression-capture-groups)



[Recipe 24: Picking a random letter from a six-byte string](#recipe-24---picking-a-random-letter-from-a-six-byte-string)



[Recipe 25: Creating a Wifi QR code](#recipe-25---creating-a-wifi-qr-code)



[Recipe 26: Extracting and Decoding a Multistage PHP Webshell](#recipe-26---extracting-and-decoding-a-multistage-php-webshell)



[Recipe 27: Decoding an Auto Visitor PHP script](#recipe-27---decoding-an-auto-visitor-php-script)



[Recipe 28: De-obfuscation of Cobalt Strike Beacon using Conditional Jumps to obtain shellcode](#recipe-28---de-obfuscation-of-cobalt-strike-beacon-using-conditional-jumps-to-obtain-shellcode)



[Recipe 29: Log File Timestamp Manipulation with Subsections and Registers](#recipe-29---log-file-timestamp-manipulation-with-subsections-and-registers)



[Recipe 30: CharCode obfuscated PowerShell Loader for a Cobalt Strike beacon](#recipe-30---charcode-obfuscated-powershell-loader-for-a-cobalt-strike-beacon)



[Recipe 31: Deobfuscate encoded strings in .NET binary](#recipe-31---deobfuscate-encoded-strings-in-.net-binary)  



[Recipe 32: Extract malicious Gootkit DLL from obfuscated registry data](#recipe-32---extract-malicious-gootkit-dll-from-obfuscated-registry-data)



[Recipe 33: Identify embedded URLs in Emotet PowerShell script](#recipe-33---identify-embedded-urls-in-emotet-powershell-script)



[Recipe 34: Analysing OOXML Files for URLs](#recipe-34---analysing-ooxml-files-for-urls)



[Recipe 35: Decrypting REvil PowerShell ransomware sample](#recipe-35---decrypting-revil-powershell-ransomware-sample)



[Recipe 36: Create a CyberChef Password Generator](#recipe-36---create-a-cyberchef-password-generator)



[Recipe 37: From Sandbox zipped email to malicious URL](#recipe-37---from-sandbox-zipped-email-to-malicious-url)



[Recipe 38: Planes, Skulls and Envelopes - Live and Let PowerShell](#recipe-38---planes-skulls-and-envelopes---live-and-let-powershell)



[Recipe 39: Decrypt GoldMax aka Sunshutte encrypted configuration files](#recipe-39---decrypt-goldmax-aka-sunshutte-encrypted-configuration-files)



[Recipe 40: Morse Code Madness](#recipe-40---morse-code-madness)



[Recipe 41: PHP mixed hexadecimal and octal encoding](#recipe-41---php-mixed-hexadecimal-and-octal-encoding)



[Recipe 42: PHP Webshell with layered obfuscation](#recipe-42---php-webshell-with-layered-obfuscation)



[Recipe 43: Magento skimmer deobfuscation](#recipe-43---magento-skimmer-deobfuscation)



[Recipe 44: Decrypting JobCrypter Ransomware](#recipe-44---decrypting-jobcrypter-ransomware)



[Recipe 45: Sqiud Proxy Log Timestamp Conversion](#recipe-45---sqiud-proxy-log-timestamp-conversion)



[Recipe 46: Tailoring your regex for the situation](#recipe-46---tailoring-your-regex-for-the-situation)



[Recipe 47: Trickbot Visual Basic script](#recipe-47---trickbot-visual-basic-script)



[Recipe 48: vjw0rm Emoji Madness](#recipe-48---vjw0rm-emoji-madness)



[Recipe 49: Disassemble an EICAR test file](#recipe-49---disassemble-an-eicar-test-file)



[Recipe 50: Parse Security Descriptor Definition Language output](#recipe-50---parse-security-descriptor-definition-language-output)



[Recipe 51: Base-45 decoder](#recipe-51---base-45-decoder)



[Recipe 52: Randomise list of items](#recipe-52---randomise-list-of-items)



[Recipe 53: Olevba output to Powershell](#recipe-53---olevba-output-to-powershell)



[Recipe 54: Windows Event ID 1029 Hashes](#recipe-54---windows-event-id-1029-hashes)  



[Recipe 55: Debofuscating BazarLoader aka TA551 maldoc](#recipe-55---debofuscating-bazarloader-aka-ta551-maldoc)  



[Recipe 56: Calculate and lookup JA3 or JA3S hash values from a PCAP](#recipe-56---calculate-and-lookup-ja3-or-ja3s-hash-values-from-a-pcap)



[Recipe 57: Make a meme with CyberChef](#recipe-57---make-a-meme-with-cyberchef)



[Recipe 58: Extract IcedID second stage URL from a maldoc](#recipe-58---extract-icedid-second-stage-url-from-a-maldoc)



[Recipe 59: Parse Cobalt Strike beacon configuration](#recipe-59---parse-cobalt-strike-beacon-configuration)



[Recipe 60: Decode URLs protected by Microsoft Safelinks](#recipe-60---decode-urls-protected-by-microsoft-safelinks)



[Recipe 61: Extract second stage URLs from Qakbot Excel maldocs](#recipe-61---extract-second-stage-urls-from-qakbot-excel-maldocs)



[Recipe 62: Emotet Maldoc to PowerShell](#recipe-62---emotet-maldoc-to-powershell)



[Recipe 63: Extract URLs from Dridex obfuscated VBS](#recipe-63---extract-urls-from-dridex-obfuscated-vbs)



[Recipe 64: Convert Strings to VirusTotal Grep queries](#recipe-64---convert-strings-to-virustotal-grep-queries)



[Recipe 65: Deobfuscate MSF Venom PowerShell reverse shell payload](#recipe-65---deobfuscate-msf-venom-powershell-reverse-shell-payload)



[Recipe 66: Nested subsection example](#recipe-66---nested-subsection-example)



[Recipe 67: Converting a MSI ProductCode to Registry Installer ProductID](#recipe-67---converting-a-msi-productcode-to-registry-installer-productid)



[Recipe 68: Converting Java signed byte arrays](#recipe-68---converting-java-signed-byte-arrays)  



[Recipe 69: Extracting DLL payload from a Bumblebee Powershell script](#recipe-69---extracting-dll-payload-from-a-bumblebee-powershell-script)



[Recipe 70: Extracting endpoints from Android network security config](#recipe-70---extracting-endpoints-from-android-network-security-config)



## Recipe 1 - Extract base64, raw inflate and code beautify



A very common scenario: extract Base64, inflate, beautify the code. You may need to then do further processing or dynamic analysis depending on the next stage.



Filename: ahack.bat



Zipped File: cc9c6c38840af8573b8175f34e5c54078c1f3fb7c686a6dc49264a0812d56b54_183SnuOIVa.bin.gz



Sample: SHA256 cc9c6c38840af8573b8175f34e5c54078c1f3fb7c686a6dc49264a0812d56b54



https://www.hybrid-analysis.com/sample/cc9c6c38840af8573b8175f34e5c54078c1f3fb7c686a6dc49264a0812d56b54?environmentId=120



### Recipe Details



```[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Generic Code Beautify","args":[]}]```



![Recipe_1](screenshots/recipe_1.PNG)



## Recipe 2 - Invoke-Obfuscation



CyberChef won't be able to handle all types of Invoke-Obfuscation, but here is one that can be decoded.



Filename: Acknowledgement NUT-95-52619.eml



Zipped File: 1240695523bbfe3ed450b64b80ed018bd890bfa81259118ca2ac534c2895c835.bin.gz



Sample: SHA256 1240695523bbfe3ed450b64b80ed018bd890bfa81259118ca2ac534c2895c835



https://www.hybrid-analysis.com/sample/1240695523bbfe3ed450b64b80ed018bd890bfa81259118ca2ac534c2895c835?environmentId=120



### Recipe Details



```[{"op":"Find / Replace","args":[{"option":"Regex","string":"\\^|\\\\|-|_|\\/|\\s"},"",true,false,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Generic Code Beautify","args":[]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"http:"},"http://",true,false,true,false]},{"op":"Extract URLs","args":[false]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]```



![Recipe_2](screenshots/recipe_2.PNG)



##  Recipe 3 - From CharCode



Malware and scripts often use Charcode to represent characters in order to evade from AV and EDR solutions. CyberChef eats this up.



Filename: 3431818-f71f60d10b1cbe034dc1be242c6efa5b9812f3c6.zip



Source: https://gist.github.com/jonmarkgo/3431818



### Recipe Details



```[{"op":"Regular expression","args":["User defined","([0-9]{2,3}(,\\s|))+",true,true,false,false,false,false,"List matches"]},{"op":"From Charcode","args":["Comma",10]},{"op":"Regular expression","args":["User defined","([0-9]{2,3}(,\\s|))+",true,true,false,false,false,false,"List matches"]},{"op":"From Charcode","args":["Space",10]}]```



![Recipe_3](screenshots/recipe_3.PNG)



## Recipe 4 - Group Policy Preference passwords



When a new GPP is created, there’s an associated XML file created in SYSVOL with the relevant configuration data and if there is a password provided, it is AES-256 bit encrypted. Microsoft published the AES Key, which can be used to decrypt passwords store in:  \\\SYSVOL\\Policies\



Credit: @cyb3rops



Source 1: https://twitter.com/cyb3rops/status/1036642978167758848



Source 2: https://adsecurity.org/?p=2288



### Recipe Details



```[{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["None"]},{"op":"AES Decrypt","args":[{"option":"Hex","string":"4e9906e8fcb66cc9faf49310620ffee8f496e806cc057990209b09a433b66c1b"},{"option":"Hex","string":""},"CBC","Hex","Raw",{"option":"Hex","string":""}]},{"op":"Decode text","args":["UTF16LE (1200)"]}]```



![Recipe_4](screenshots/recipe_4.PNG)



## Recipe 5 - Using loops & labels



CyberChef can use labels to identify parts of the recipe and then loop back to perform operations multiple times. In this example, there are 29 rounds of Base64 encoding which are extracted and decoded.



Credit: @pmelson



Source File: hmCPDnHs.txt



Source 1: https://pastebin.com/hmCPDnHs



Source 2: https://twitter.com/pmelson/status/1078776229996752896



Also see more example of loops over Base64: https://twitter.com/QW5kcmV3/status/1079095274776289280 (Credit: @QW5kcmV3)



### Recipe Details



```[{"op":"Label","args":["top"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Jump","args":["top",28]},{"op":"Generic Code Beautify","args":[]}]```



![Recipe_5](screenshots/recipe_5.PNG)



## Recipe 6 - Google ei timestamp



Google uses its own timestamp, I call ei time, which it embeds in the URL.



Source: https://bitofhex.com/2018/05/29/cyberchef/



### Recipe Details



```[{"op":"From Base64","args":["A-Za-z0-9-_=",true]},{"op":"To Hex","args":["None"]},{"op":"Take bytes","args":[0,8,false]},{"op":"Swap endianness","args":["Hex",4,true]},{"op":"From Base","args":[16]},{"op":"From UNIX Timestamp","args":["Seconds (s)"]}]```



![Recipe_6](screenshots/recipe_6.PNG)



## Recipe 7 - COM scriptlet to disassembled x86 assembly



This is an eleven-stage decoded COM scriptlet that uses Base64, Gunzip, RegEx, and Disassemble x86 instructions.



Credit: @JohnLaTwC



Filename: 41a6e22ec6e60af43269f4eb1eb758c91cf746e0772cecd4a69bb5f6faac3578.txt



Source 1: https://gist.githubusercontent.com/JohnLaTwC/aae3b64006956e8cb7e0127452b5778f/raw/f1b23c84c654b1ea60f0e57a860c74385915c9e2/43cbbbf93121f3644ba26a273ebdb54d8827b25eb9c754d3631be395f06d8cff



Source 2: https://twitter.com/JohnLaTwC/status/1062419803304976385



### Recipe Details



```[{"op":"Regular expression","args":["","[A-Za-z0-9=/]{40,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[A-Za-z0-9+/=]{40,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","[A-Za-z0-9+/=]{40,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["Space"]},{"op":"Remove whitespace","args":[true,true,true,true,true,false]},{"op":"Disassemble x86","args":["32","Full x86 architecture",16,0,true,true]}]```



![Recipe_7](screenshots/recipe_7.png)



## Recipe 8 - Extract hexadecimal, convert to hexdump for embedded PE file



This file has an embedded PE file (SHA 256: 26fac1d4ea12cdceac0d64ab9694d0582104b3c84d7940a4796c1df797d0fdc2, R5Sez8PH.exe, VT: 54/70). Using CyberChef, we can regex hexadecimal and the convert to a more easily viewable hexdump.



Source 1: https://pastebin.com/R5Sez8PH (sorry: no longer available!)



Source 2: https://twitter.com/ScumBots/status/1081949877272276992



### Recipe Details



```[{"op":"Regular expression","args":["User defined","[a-fA-F0-9]{200,}",true,true,false,false,false,false,"List matches"]},{"op":"From Hex","args":["Auto"]},{"op":"To Hexdump","args":[16,false,false]}]```



![Recipe_8](screenshots/recipe_8.png)



## Recipe 9 - Reverse strings, character substitution, from base64



A blob of base64 with some minor bytes to be substituted. Original decoding done by @pmelson in Python and converted to CyberChef.



Credit: @pmelson



Source 1: https://pastebin.com/RtjrweYF / RtjrweYF.txt



Source 2: https://twitter.com/pmelson/status/1076893022758100998



### Recipe Details



```[{"op":"Reverse","args":["Character"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"%"},"A",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"×"},"T",true,false,false,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"÷"},"V",true,false,false,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hexdump","args":[16,false,false]}]```



![Recipe_9](screenshots/recipe_9.png)



## Recipe 10 - Extract object from Squid proxy cache



Don't manually carve out your Squid cache objects. Simply upload the file to CyberChef. This recipe will search for the magic bytes 0x0D0A0D0A, extract everything after. It then gzip decompresses the object for download.



Source: 00000915 (output should be TrueCrypt_Setup_7.1a.exe with SHA256 e95eca399dfe95500c4de569efc4cc77b75e2b66a864d467df37733ec06a0ff2)



### Recipe Details



```[{"op":"To Hex","args":["None"]},{"op":"Regular expression","args":["User defined","(?<=0D0A0D0A).*$",true,false,false,false,false,false,"List matches"]},{"op":"From Hex","args":["Auto"]},{"op":"Gunzip","args":[]}]```



![Recipe_10](screenshots/recipe_10.png)



## Recipe 11 - Extract GPS Coordinates to Google Maps URLs



If you need to quickly triage where a photo was taken and you're lucky enought to have embedded GPS latitude and longitudes then use this recipe to quickly make a usable Google Maps URL to identify the location.



### Recipe Details



```[{"op":"Extract EXIF","args":[]},{"op":"Regular expression","args":["User defined","((?<=GPSLatitude:).*$)|((?<=GPSLongitude: ).*$)",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Extended (\\n, \\t, \\x...)","string":"\\n"},",",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":" "},"https://maps.google.com/?q=",true,false,true,false]}]```



![Recipe_11](screenshots/recipe_11.png)



## Recipe 12 - Big Number Processing



CyberChef can handle massive numbers. Here we can use a simple recipe to change a 38-digit X509SerialNumber to its hexadecimal equivalent X.509 certificate serial number. Then we can regex the hexadecimal and insert a colon to transform it to the correct format.



Credit: @QW5kcmV3



Source: https://twitter.com/QW5kcmV3/status/949437437473968128



### Recipe Details



```[{"op":"To Base","args":[16]},{"op":"Regular expression","args":["User defined","[a-f0-9]{2,2}",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Extended (\\n, \\t, \\x...)","string":"\\n"},":",true,false,true,false]}]```



![Recipe_12](screenshots/recipe_12.png)



## Recipe 13 - Parsing DNS PTR records with Registers



IP addresses in DNS PTR records are stored as least significant octet first. For example: 167.139.44.10.in-addr.arpa would relate to IP address of 10.44.139.167. Using CyberChef's registers we can allocate each octet to a memory register (or variable if it's easier to think of it that way). These can then be reversed to re-order the IP address. A find/replace tidies up the rest of the record. This could be reversed it you wanted to translate 'regular' IP addresses to search in DNS PTR records.



![Recipe_13](screenshots/recipe_13.png)



### Recipe Details



```[{"op":"Fork","args":["\\n","\\n",false]},{"op":"Register","args":["(\\d{1,3}).(\\d{1,3}).(\\d{1,3}).(\\d{1,3})",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R0.$R1.$R2.$R3"},"$R3.$R2.$R1.$R0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":".in-addr.arpa"},"",true,false,true,false]}]```



## Recipe 14 - Decoding POSHC2 executables



PoshC2 is a proxy aware C2 framework that utilises Powershell to aid penetration testers with red teaming, post-exploitation and lateral movement. The dropper is based on PowerShell and consists of a PowerShell script which is double Base64 encoded and compressed. Extracting the strings can be done with CyberChef as detailed below. Depending on the settings and customisation of the executable you may need to adjust your recipe.



Credit: @a_tweeter_user



Source: https://twitter.com/a_tweeter_user/status/1100751236687642624



Source: posh.zip



![Recipe_14](screenshots/recipe_14.png)



### Recipe Details



```[{"op":"Strings","args":["All",4,"Alphanumeric + punctuation (A)",false]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+=]{200,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[a-z0-9/\\\\+=]{100,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]}]```



##  Recipe 15 - Parsing $MFT $SI Timestamps



CyberChef can do just about anything with data. Here are raw hex bytes from a $MFT entry. By selecting certain bytes, and using various functions of CyberChef I can parse any part of the data as needed. This recipe will extract and parse the $SI timestamps. Encase no more!



![Recipe 15](screenshots/recipe_15.PNG)



### Recipe Details



```[{"op":"Take bytes","args":[160,64,false]},{"op":"Regular expression","args":["User defined",".{16}",true,true,true,false,false,false,"List matches with capture groups"]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Swap endianness","args":["Hex",10,true]},{"op":"Remove whitespace","args":[true,true,true,true,true,false]},{"op":"Windows Filetime to UNIX Timestamp","args":["Nanoseconds (ns)","Hex"]},{"op":"From UNIX Timestamp","args":["Nanoseconds (ns)"]},{"op":"Merge","args":[]},{"op":"Register","args":["(.*)\\n(.*)\\n(.*)\\n(.*)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R0"},"$SI Creation Time: $R0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R1"},"$SI Modified Time: $R1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R2"},"$SI MFT Change Time: $R2",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R3"},"$SI Access Time: $R3",false,false,true,false]}]```



## Recipe 16 - Decoding PHP gzinflate and base64 webshells



Webshells come in all shapes and sizes. For PHP webshells the combination of gzinflate and base64 can be used to obfuscate the eval data. In this example, there are 21 rounds of compression and base64 that we can quickly parse out using labels and loops.



Source: https://github.com/LordWolfer/webshells/blob/b7eefaff64049e3ff61e90c850686135c0ba74c4/from_the_wild1.php



![Recipe 16](screenshots/recipe_16.PNG)



### Recipe Details



```[{"op":"Label","args":["start"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{10,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Block",false,false]},{"op":"Jump","args":["start",21]}]```



## Recipe 17 - Extracting shellcode from a Powershell Meterpreter Reverse TCP script



Often seen in @pmelson's Pastbin bot @scumbots, this peels away multiple layers of an encoded Powershell script to display the shellcode. From here you *could* extract PUSH statements to try and identify the IP address & port, but you'll get too many false positives. So you're better off using a tool like scdbg (see: http://sandsprite.com/blogs/index.php?uid=7&pid=152)



Source: https://twitter.com/ScumBots/status/1121854255898472453



Source: https://pastebin.com/9DnD6t6W / 9DnD6t6W.txt



![Recipe 17](screenshots/recipe_17.PNG)



### Recipe Details



```[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["None"]},{"op":"Disassemble x86","args":["32","Full x86 architecture",16,0,true,true]}]```



## Recipe 18 - Recycle Bin Parser with Subsections and Merges



Subsections and Merges are powerful tools in CyberChef that allow the application of ingredients to a selection of data rather than the whole input file. This section can then be merged together to continue on the whole input. In an awesome piece of work @GlassSec has created a Windows Recycle Bin parser using CyberChef indicating the possibilities of these functions is endless.



Source: https://gist.github.com/glassdfir/f30957b314ec39a8aa319420a29ffc76



Credit: https://twitter.com/GlassSec



![Recipe 18](screenshots/recipe_18.PNG)



### Recipe Details



```[{"op":"Conditional Jump","args":["^(\\x01|\\x02)",true,"Error",10]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\x02.{23})(....)"},"$1",false,false,false,false]},{"op":"Subsection","args":["^.{24}(.*)",true,true,false]},{"op":"Decode text","args":["UTF16LE (1200)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(.*)."},"\\nDeleted File Path: $1",false,false,false,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":["^.{16}(.{8})",false,true,false]},{"op":"Swap endianness","args":["Raw",8,true]},{"op":"To Hex","args":["None"]},{"op":"Windows Filetime to UNIX Timestamp","args":["Seconds (s)","Hex"]},{"op":"From UNIX Timestamp","args":["Seconds (s)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(.* UTC)"},"\\nFile Deletion Time: $1",true,false,true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":["^.{8}(.{8})",true,true,false]},{"op":"To Hex","args":["None"]},{"op":"Swap endianness","args":["Hex",8,true]},{"op":"From Base","args":[16]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(.*)"},"\\nDeleted File Size: $1 bytes",true,false,true,true]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^.{8}"},"******** WINDOWS RECYCLE BIN METADATA ********",true,false,false,false]},{"op":"Jump","args":["Do Nothing",10]},{"op":"Label","args":["Error"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^.*$"},"This doesn't look like a Recycle Bin file to me ",true,false,true,false]},{"op":"Label","args":["Do Nothing"]}]```



##  Recipe 19 - Identify Obfuscated Base64 with Regular Expression Highlighting



Less of a recipe and more of a technique. Using the 'highlight' function of the regular expression ingredient can clearly bring out where base64 data has been broken up with non-traditional base64 character set. Here the sequence '@\\[\\]{}\\s\\x7F-\\xFF]*(?:[.!,?]+[^.!,?'\"<>\\[\\]{}\\s\\x7F-\\xFF]+)*)?",true,true,false,false,false,false,"List matches"]},{"op":"Split","args":[",","\\n"]}]`  



![Recipe 46a](screenshots/recipe_46a.png)  



![Recipe 46b](screenshots/recipe_46b.png)  



## Recipe 47 - Trickbot Visual Basic script



The malware author here has attempted to fool automated analysis by slicing the recognisable Base64 encoded PE header into character codes. Using a filter to remove junk, subsection and standard regular expressions we can extract the base64 and the DLL the script is hiding.  



Source: https://twitter.com/mattnotmax/status/1394986367604695042  



### Recipe Details  



`[{"op":"Filter","args":["Line feed","^'",true]},{"op":"Subsection","args":["(?<=\\()(\\d{2,3})(?=\\))",true,true,false]},{"op":"From Charcode","args":["Space",10]},{"op":"Merge","args":[]},{"op":"Regular expression","args":["User defined","(?<=\\()([a-zA-Z0-9+/=]{1}?)(?=\\))|[a-zA-Z0-9+/=]{20,}",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"},"",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"SHA2","args":["256",64,160]}]`  



![Recipe 47](screenshots/recipe_47.png)  



## Recipe 48 - vjw0rm Emoji Madness  



"Emojis, so hot right now", says the meme (see recipe 38 for proof) but this interesting sample found by [TomU](https://twitter.com/c_APT_ure) through his ongoing research into `DESKTOP-group` has a few tricks up its sleeve. Apart from emoji obfuscation, it downloads a snippet of code from `pastee.ee` which has the final key to its de-obfuscation. But it's no match for his CyberChef recipe. I've slighted edited to use a subsection and done a find/replace directly with the emoji values as these can be pasted easily into CyberChef. For those playing at home, the extra snippet of code that helps with the deobfuscation is also available in the sample zip.  



Source: https://twitter.com/c_APT_ure/status/1362146658117701632  



`[{"op":"Subsection","args":["\\\\x[a-fA-F0-9]{2}",true,true,false]},{"op":"From Hex","args":["Auto"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"☽☂|☚☎"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"'"},"\"",true,false,true,false]}]`  



![Recipe 48](screenshots/recipe_48.png)  



## Recipe 49 - Disassemble an EICAR test file  



The EICAR test file has a standard known structure of a 16 bit DOS program. Using CyberChef we can take any valid EICAR test file and break it down to its assembly. Here we use subsections (are we getting the idea that subsections are awesome yet?) and use it to capture and manipulate sections that we require. CyberChef can produce disassembly in 16, 32 or 64 bit and voilà! We've got the correct output. With thanks to Nintechnet blog for breaking down the EICAR file and helping me to understand the structure.  



Source: https://blog.nintechnet.com/anatomy-of-the-eicar-antivirus-test-file/  



`[{"op":"Subsection","args":["(.*)(\\$.*\\$)(.*)",true,false,false]},{"op":"To Hex","args":["None",0]},{"op":"Disassemble x86","args":["16","Full x86 architecture",16,0,true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":[".*(\\$.*\\$)",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"db\\t\\t\\t\\t",true,false,true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":[".*\\$(.*)",true,true,false]},{"op":"To Hex","args":["None",0]},{"op":"Disassemble x86","args":["16","Full x86 architecture",16,0,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"\\n",true,false,false,false]}]`  



![Recipe 49](screenshots/recipe_49.png)  



## Recipe 50 - Parse Security Descriptor Definition Language output    



If there is one thing that is definately 'All Greek to me' it's Security Descriptor Definition Language (SDDL). Thankfully, [@cnotin](https://twitter.com/cnotin) has created a fantastic recipe to parse SDDL output to make it much easier to understand, read, and interpret. I also like the extensive use of Comments (something that I'm always advocating, but often not implementing!) Kudos!  



Source: https://twitter.com/cnotin/status/1387002797175021569  



`[{"op":"Comment","args":["subsection for the content before the ACE strings"]},{"op":"Subsection","args":["(.*?)\\(.*",false,true,false]},{"op":"Comment","args":["Each \"G:\" and \"D:\" on its own line"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"([GD]):"},"\\n$1:",true,false,true,false]},{"op":"Comment","args":["add separator"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$"},"\\n######\\n",true,false,false,false]},{"op":"Merge","args":[]},{"op":"Comment","args":["subsection for the ACE strings"]},{"op":"Subsection","args":["######\\n(.*)",false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":")("},"\\n",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\)$"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^\\("},"",true,false,true,false]},{"op":"Comment","args":["Add space between each permission or flag bigram"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"([A-Z]{2})"},"$1 ",true,false,true,false]},{"op":"Comment","args":["Insert table header"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"Type;Flags;Permissions;ObjectType;Inherited ObjectType;Trustee\\n",false,false,true,false]},{"op":"To Table","args":[";","\\n",true,"ASCII"]},{"op":"Merge","args":[]}]`  



![Recipe 50](screenshots/recipe_50.png)  



## Recipe 51 - Base-45 decoder



[Base 45](https://datatracker.ietf.org/doc/draft-faltstrom-base45/) is another type of encoding related to Base64 et al. Here Tomasz Zieliński has done amazing work in writing a CyberChef recipe for this encoding. Plus the recipe is heavily commented so you can see what is happening where! Awesome.  



Credit: https://gist.github.com/tomekziel  

Source: https://gist.github.com/tomekziel/eaaabd55f2d244adf5fcf7db4db0387f  



### Recipe Details  



`[{"op":"Comment","args":["CYBERCHEF BASE-45 DECODER\n\nTomasz Zielinski ([email protected])\npublic domain\n"]},{"op":"Conditional Jump","args":["^(...)+$",false,"multiply3",10]},{"op":"Comment","args":["Flow for case with number of input characters that not divide by 3"]},{"op":"Comment","args":["\nSTEP 1\nReplace BASE-45 alphabet with numeric values\nhttps://datatracker.ietf.org/doc/html/draft-faltstrom-base45-04"]},{"op":"Substitute","args":["0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+\\-./:","\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\x09\\x0a\\x0b\\x0c\\x0d\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a\\x1b\\x1c\\x1d\\x1e\\x1f\\x20\\x21\\x22\\x23\\x24\\x25\\x26\\x27\\x28\\x29\\x2a\\x2b\\x2c"]},{"op":"Comment","args":["STEP 2\nIf the length of vector is not divisible by 3, add 0 as last value"]},{"op":"To Decimal","args":["Space",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"((\\d+ \\d+ \\d+[ ]*)+)(\\d+ \\d+[ ]*)*"},"$1/$3_",false,false,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"((\\d)+[ ]*)_$"},"$1 0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"[ _]*$|/"},"",true,false,true,false]},{"op":"Comment","args":["Take three-number sequences and prepare multiplication by 1, 45, and 2025"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+){0,1}"},"$1\\n$2 45\\n$3 2025\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Multiply","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"}," ",true,false,true,false]},{"op":"Comment","args":["Sum sequences of three numbers"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+)"},"$1 $2 $3\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Sum","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"To Base","args":[16]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w\\w)$"},"0$1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w)$"},"00$1",true,false,false,false]},{"op":"Comment","args":["Split a number to two bytes (effectively DIV256 and MOD256)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\w\\w)(\\w\\w)"},"$1\\n$2",true,false,true,false]},{"op":"Merge","args":[]},{"op":"Comment","args":["Change hex to chars"]},{"op":"Fork","args":["\\n","",false]},{"op":"Merge","args":[]},{"op":"Comment","args":["Special case, last byte is malformed as two bytes, remove unnecessary 0"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"00(\\w\\w)$"},"$1",true,false,true,false]},{"op":"From Hex","args":["Line feed"]},{"op":"Jump","args":["end",10]},{"op":"Label","args":["multiply3"]},{"op":"Comment","args":["Flow for case with number of input characters that divide by 3"]},{"op":"Substitute","args":["0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+\\-./:","\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\x09\\x0a\\x0b\\x0c\\x0d\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a\\x1b\\x1c\\x1d\\x1e\\x1f\\x20\\x21\\x22\\x23\\x24\\x25\\x26\\x27\\x28\\x29\\x2a\\x2b\\x2c"]},{"op":"To Decimal","args":["Space",false]},{"op":"Comment","args":["Take three-number sequences and prepare multiplication by 1, 45, and 2025"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+){0,1}"},"$1\\n$2 45\\n$3 2025\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Multiply","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"}," ",true,false,true,false]},{"op":"Comment","args":["Sum sequences of three numbers"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+)"},"$1 $2 $3\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Sum","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"To Base","args":[16]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w\\w)$"},"0$1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w)$"},"00$1",true,false,false,false]},{"op":"Comment","args":["Split a number to two bytes (effectively DIV256 and MOD256)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\w\\w)(\\w\\w)"},"$1\\n$2",true,false,true,false]},{"op":"Comment","args":["Change hex to chars"]},{"op":"From Hex","args":["Line feed"]},{"op":"Merge","args":[]},{"op":"Fork","args":["\\n","",false]},{"op":"Merge","args":[]},{"op":"Label","args":["end"]}]`



![Recipe 51](screenshots/recipe_51.png)  



## Recipe 52 - Randomise list of items



Here we can use the operation Pseudo-Random Number Generator to create a random hexadecimal value. Prior to that we save are items in registers. Then we can join them together and sort by the randomised hex values. Sure, it's probably not cryptographically perfect and make NSA eggheads eyes bleed but ¯\_(ツ)_/¯.  



### Recipe Details    



`[{"op":"Find / Replace","args":[{"option":"Regex","string":","},"\\n",true,false,true,false]},{"op":"Sort","args":["Line feed",false,"Alphabetical (case insensitive)"]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Register","args":["([\\s\\S]*)",true,false,false]},{"op":"Pseudo-Random Number Generator","args":[32,"Hex"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(.*)"},"$1 $R0",false,false,true,false]},{"op":"Merge","args":[]},{"op":"Sort","args":["Line feed",false,"Numeric (hexadecimal)"]},{"op":"Regular expression","args":["User defined","(?<=\\s)\\w+$",true,true,false,false,false,false,"List matches"]}]`  



![Recipe 52](screenshots/recipe_52.png)   



## Recipe 53 - Olevba output to Powershell



With thanks to [@James_inthe_box](https://twitter.com/James_inthe_box/status/1422968634817716225) for this RustyBuer maldoc and recipe. Taking the output from Olevba we can regex, convert, loop and decode until we reach out PowerShell with its IOC goodies.   



Credit: https://twitter.com/James_inthe_box



### Recipe Details



`[{"op":"Regular expression","args":["User defined","\\d\\d+\\)(,|\\n)",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\)|,"},"",true,false,true,false]},{"op":"From Charcode","args":["Line feed",10]},{"op":"Label","args":["base64loop"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Jump","args":["base64loop",1]}]`  



![Recipe 53](screenshots/recipe_53.png)   



## Recipe 54 - Windows Event ID 1029 Hashes  



Windows event logs. Love them? Hate them? Do you see event IDs in your dreams? Well rest easier with this smart recipe from Mike Peterson at [nullsec.us](https://nullsec.us/) who researched at Windows Event ID 1029 in the Microsoft-Windows-TerminalServices-RDPClient/Operational.evtx log. Lovingly placed in the log is this curious entry similar to: `Base64(SHA256(UserName)) is = s8v7wS1UMkc0myytGIXeX2MWh9ojpi4aKwRwbOwFS5U=-` which is a hashed & encoded entry of the username used for the RDP connection on computer initiating the connection. Read more at the blog. As it is hashed it's not easily reverseable. But if you have a 'suspect' account(s) then you can use this recipe to test your hypothesis.  



Credit: https://nullsec.us/windows-event-id-1029-hashes/



### Recipe Details   



`[{"op":"Decode text","args":["UTF-8 (65001)"]},{"op":"Encode text","args":["UTF-16LE (1200)"]},{"op":"SHA2","args":["256",64,160]},{"op":"From Hex","args":["Space"]},{"op":"To Base64","args":["A-Za-z0-9+/="]}]`



![Recipe 54](screenshots/recipe_54.png)   



## Recipe 55 - Debofuscating BazarLoader aka TA551 maldoc



A recipe worthy of two screenshots! Here the maldoc uses a simple find/replace to further obfuscate base64 encoded & reversed data. Here within lies the URI for the next stage of malware goodness (or badness, depending on your profession, and point of view). Once you've identified the 'out of place data' (screenshot one), you can then modify your recipe to suit your needs.  



Credit: [Kostas](https://twitter.com/Kostastsale/status/1426264806093254656)



### Recipe Details



`[{"op":"Find / Replace","args":[{"option":"Simple string","string":"za67t"},"",true,false,true,false]},{"op":"Generic Code Beautify","args":[]},{"op":"Subsection","args":["[A-Za-z0-9+/=]{450,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Merge","args":[]},{"op":"Subsection","args":["(?<=\\)e\\()(.*?)(?=\\n)",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[]},{"op":"Extract URLs","args":[false]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]`



![Recipe 55a](screenshots/recipe_55a.png)   

![Recipe 55b](screenshots/recipe_55b.png)   



## Recipe 56 - Calculate and lookup JA3 or JA3S hash values from a PCAP



Available in v9.30+ a modern update to Recipe 22. Filter a PCAP for the Client/Server Hello and extract the bytes. From here, pass it through the JA3 operation, into a register and then lookup via an API request to [ja3er.com](https://ja3er.com/). Try out some PCAPs from the amazing [www.malware-traffic-analysis.net](https://www.malware-traffic-analysis.net/).  



Source: https://twitter.com/mattnotmax/status/1426763382082850816



### Recipe Details



`[{"op":"Regular expression","args":["User defined","16030[13].+",true,true,false,false,false,false,"List matches"]},{"op":"JA3 Fingerprint","args":["Hex","Hash digest"]},{"op":"Register","args":["(.*)",true,false,false]},{"op":"HTTP request","args":["GET","https://ja3er.com/search/$R0","","Cross-Origin Resource Sharing",false]},{"op":"JSON Beautify","args":["    ",false]}]`



![Recipe 56a](screenshots/recipe_56a.png)   

![Recipe 56b](screenshots/recipe_56b.png)  



## Recipe 57 - Make a meme with CyberChef  



Yes, with `Add Text to Image` this can be done. Yes, with `Add Test to Image` this should be done. Go. Do it now.  



Credit: [Ignis](https://twitter.com/ahakcil/status/1428333622466076679)



### Recipe Details



`[{"op":"HTTP request","args":["GET","https://static.flag.farm/img/2ju3gf.jpg.b64","","Cross-Origin Resource Sharing",false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Render Image","args":["Raw"]},{"op":"Add Text To Image","args":["Making memes normally","Right","None",0,150,32,"Roboto",0,0,0,255]},{"op":"Add Text To Image","args":["Making Memes with","Right","None",0,450,32,"Roboto",0,0,0,255]},{"op":"Add Text To Image","args":["Cyberchef","None","None",550,490,32,"Roboto",0,0,0,255]}]`



![Recipe 57](screenshots/recipe_57.png)  



## Recipe 58 - Extract IcedID second stage URL from a maldoc  



IcedID, also known as Bokbot, is a prolific threat, known for sending out waves of malicious documents. Here [@Max_Mal_](https://twitter.com/Max_Mal_) provides a quick way to extract the second stage URL from the maldoc without executing it. By unzipping the .docx and a little regex magic we can extract the URL in plain text.   



Source: [Max_Malyutin](https://twitter.com/Max_Mal_/status/1433456034824302598)  



### Recipe Details



`[{"op":"Unzip","args":["",false]},{"op":"Regular expression","args":["User defined","(?<=Target\\=\\\")(.*)(?=\\\"\\sTargetMode\\=)",true,true,false,false,false,false,"List matches"]}]`  



![Recipe 58](screenshots/recipe_58.png)  



## Recipe 59 - Parse Cobalt Strike beacon configuration



In the category of 'Things you probably shouldn't do in CyberChef but should try anyway' is parsing a Cobalt Strike beacon configuration file. [@notwhickey](https://twitter.com/notwhickey) has done a mammoth task of parsing the structure in CyberChef, and his blog goes into excellent detail into how this can be achieved. Definately take the time to have a read as you can learn some cool tips and tricks that could apply to other problems. You may need to adjust various XOR parameters to account for different formats as in my sample. Amazing stuff!  



Source: [Cobalt Strike beacon configuration parsing with CyberChef](https://medium.com/@whickey000/cobaltstrike-beacon-config-parsing-with-cyberchef-malware-mondays-2-86d759b9a031)  



### Recipe Details



`[{"op":"To Hex","args":["None",0]},{"op":"Register","args":["([\\s\\S]*)",true,false,false]},{"op":"Regular expression","args":["User defined","(^(?:.*?)ffffff)",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(..)"},"$1\\n",true,false,true,false]},{"op":"Add line numbers","args":[]},{"op":"Tail","args":["Line feed",1]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+)"},"$1 4",true,false,true,false]},{"op":"Divide","args":["Space"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"([0–9\\.]+)"},"$1 2",true,false,true,false]},{"op":"Sum","args":["Space"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\..*"},"",true,false,true,false]},{"op":"Register","args":["(\\d+)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":".*"},"CLEAR",true,false,true,true]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"CLEARCLEAR"},"$R0",true,false,true,false]},{"op":"Register","args":["(?:[0–9a-f][0–9a-f]){$R1}(.*)",true,false,true]},{"op":"Find / Replace","args":[{"option":"Regex","string":".*"},"CLEAR",true,false,true,true]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"CLEARCLEAR"},"$R2",true,false,true,false]},{"op":"From Hex","args":["Auto"]},{"op":"Drop bytes","args":[0,4,false]},{"op":"XOR","args":[{"option":"Hex","string":"$R2"},"Standard",false],"disabled":true},{"op":"XOR","args":[{"option":"Hex","string":"2e"},"Standard",false]},{"op":"To Hex","args":["Space",0]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(.*)"},"$1 00 08 00 03 01 00 ZZ ZZ ZZ ZZ 00 09 00 03 00 80 ZZ ZZ ZZ ZZ 00 0a 00 03 00 40 ZZ ZZ ZZ ZZ 00 0c 00 03 01 00 ZZ ZZ ZZ ZZ 00 0d 00 03 01 00 ZZ ZZ ZZ ZZ 00 0e 00 03 00 40 ZZ ZZ ZZ ZZ 00 0f 00 03 00 80 ZZ ZZ ZZ ZZ 00 1a 00 03 00 10 ZZ ZZ ZZ ZZ 00 1b 00 03 00 10 ZZ ZZ ZZ ZZ 00 1d 00 03 00 40 ZZ ZZ ZZ ZZ 00 1e 00 03 00 40 ZZ ZZ ZZ ZZ 00 20 00 03 00 80 ZZ ZZ ZZ ZZ 00 21 00 03 00 40 ZZ ZZ ZZ ZZ 00 22 00 03 00 40 ZZ ZZ ZZ ZZ 00 23 00 01 00 02 ZZ ZZ ZZ ZZ 00 24 00 01 00 02 ZZ ZZ ZZ ZZ 00 02 00 01 00 02 ZZ ZZ ZZ ZZ 00 05 00 01 00 02 ZZ ZZ ZZ ZZ 00 06 00 01 00 02 ZZ ZZ ZZ ZZ 00 10 00 01 00 02 ZZ ZZ ZZ ZZ 00 11 00 01 00 02 ZZ ZZ ZZ ZZ 00 12 00 01 00 02 ZZ ZZ ZZ ZZ 00 14 00 02 00 04 ZZ ZZ ZZ ZZ 00 03 00 02 00 04 ZZ ZZ ZZ ZZ 00 13 00 02 00 04 ZZ ZZ ZZ ZZ",true,false,true,false]},{"op":"Register","args":["(?:00 08 00 03 01 00)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 09 00 03 00 80)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0a 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0c 00 03 01 00)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0d 00 03 01 00)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0e 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0f 00 03 00 80)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1a 00 03 00 10)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1b 00 03 00 10)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1d 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1e 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 20 00 03 00 80)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 21 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 22 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 23 00 01 00 02)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 24 00 01 00 02)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 02 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 05 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 06 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 10 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 11 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 12 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 14 00 02 00 04 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 03 00 02 00 04 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 13 00 02 00 04 )((?:[0–9A-F]{2}\\s){4}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":".*"},"CLEAR",true,false,true,true]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"CLEARCLEAR"},"7b 0a 22 43 32 20 53 65 72 76 65 72 22 3a $R3 2c 0a 22 55 73 65 72 20 41 67 65 6e 74 22 3a $R4 2c 0a 22 48 54 54 50 20 4d 65 74 68 6f 64 20 50 61 74 68 20 32 22 3a $R5 2c 0a 22 48 65 61 64 65 72 20 31 22 3a $R6 2c 0a 22 48 65 61 64 65 72 20 32 22 3a $R7 2c 0a 22 49 6e 6a 65 63 74 69 6f 6e 20 50 72 6f 63 65 73 73 22 3a $R8 2c 0a 22 50 69 70 65 20 4e 61 6d 65 22 3a $R9 2c 0a 22 4d 65 74 68 6f 64 20 31 22 3a $R10 2c 0a 22 4d 65 74 68 6f 64 20 32 22 3a $R11 2c 0a 22 53 70 61 77 6e 20 54 6f 20 78 38 36 22 3a $R12 2c 0a 22 53 70 61 77 6e 20 54 6f 20 78 36 34 22 3a $R13 2c 0a 22 50 72 6f 78 79 20 48 6f 73 74 6e 61 6d 65 22 3a $R14 2c 0a 22 50 72 6f 78 79 20 55 73 65 72 6e 61 6d 65 22 3a $R15 2c 0a 22 50 72 6f 78 79 20 50 61 73 73 77 6f 72 64 22 3a $R16 2c 0a 22 50 72 6f 78 79 20 41 63 63 65 73 73 20 54 79 70 65 22 3a $R17 2c 0a 22 43 72 65 61 74 65 52 65 6d 6f 74 65 54 68 72 65 61 64 22 3a $R18 2c 0a 22 50 6f 72 74 22 3a $R19 2c 0a 22 4a 69 74 74 65 72 22 3a $R20 2c 0a 22 4d 61 78 20 44 4e 53 22 3a $R21 2c 0a 22 59 65 61 72 22 3a $R22 2c 0a 7d",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"ZZ ZZ ZZ ZZ"},"4e 55 4c 4c",true,false,true,false]},{"op":"From Hex","args":["Auto"]}]`  



![Recipe 59](screenshots/recipe_59.png)  



## Recipe 60 - Decode URLs protected by Microsoft Safelinks



Safe Links is a feature in Defender for Office 365 that provides URL scanning and rewriting of inbound email messages in mail flow, and time-of-click verification of URLs and links in email messages, Teams and Office 365 apps.



Source 1: [@WikiJM](https://twitter.com/wikijm)  

Source 2: https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/safe-links?view=o365-worldwide



`[{"op":"Split","args":["?","\\n"]},{"op":"Split","args":["&","\\n"]},{"op":"Split","args":["=","\\n"]},{"op":"Regular expression","args":["User defined","url\\s([^\\s]+)",true,true,false,false,false,false,"List capture groups"]},{"op":"URL Decode","args":[]}]`  



![Recipe 60](screenshots/recipe_60.png)



## Recipe 61 - Extract second stage URLs from Qakbot Excel maldocs   



Qbot? Qakbot? Who cares? With this short and sweet recipe we can extract the malicious URLs from Qakbot Excel maldocs. Pivot from here to other log sources like proxy logs, sysmon, EDR, DNS...you've got all those right?  



Credit: [@cluster25_io](https://twitter.com/cluster25_io)  

Source: https://twitter.com/cluster25_io/status/1468248610814971916  



### Recipe Details  



`[{"op":"Unzip","args":["",false]},{"op":"Strings","args":["16-bit littleendian",10,"All printable chars (U)",false]},{"op":"Filter","args":["Line feed","^\\\"",false]},{"op":"Find / Replace","args":[{"option":"Extended (\\n, \\t, \\x...)","string":"\\x00"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"[\"& ,]"},"",true,false,true,false]}]`  



![Recipe 61](screenshots/recipe_61.png)  



## Recipe 62 - Emotet Maldoc to PowerShell   



Emotet is back! Gianni Amato has whipped up a great recipe using unzip, filter, regex and some other tricks to extract and deobfuscate the embedded PowerShell. A fantastic learning recipe. Great work.  



Credit: [@guelfoweb](https://twitter.com/guelfoweb)  

Source: https://twitter.com/guelfoweb/status/1468959342514749451  



### Recipe Details  



`[{"op":"Unzip","args":["",false]},{"op":"XML Beautify","args":["\\t"]},{"op":"Filter","args":["Line feed",".*?<\\/w:t>",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"3-"},"",true,false,true,false]},{"op":"From HTML Entity","args":[]},{"op":"Regular expression","args":["User defined","(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}==)",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Reverse","args":["Character"]}]`



![Recipe 62](screenshots/recipe_62.png)  



## Recipe 63 - Extract URLs from Dridex obfuscated VBS  



Let's switch to Dridex, and smash their VBS obfuscation with this excellent submission from [@Kostastsale](https://twitter.com/Kostastsale). Using subsection the full recipe is kept for any further analysis, but a simple 'Extract URLs' lets us see the (unsurprising) Discord destination.  



Credit: [@Kostastsale](https://twitter.com/Kostastsale)  

Source: https://twitter.com/Kostastsale/status/1475375446430609411



### Recipe Details  



`[{"op":"Find / Replace","args":[{"option":"Simple string","string":"+1-1"},"",true,false,true,false]},{"op":"Subsection","args":["chr\\((\\d+)\\)",false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"From Charcode","args":["Space",10]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"chr("},"",true,true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\)\\s&\\s|\\\"\\s&\\s\\\"|\\\"\\s&\\s|\\\")"},"",true,false,true,false]},{"op":"Extract URLs","args":[false]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]`  



![Recipe 63](screenshots/recipe_63.png)  



## Recipe 64 - Convert Strings to VirusTotal Grep queries



Straight forward recipe for converting Strings to the syntax used for VT Grep queries. [VirusTotal Syntax Reference](https://support.virustotal.com/hc/en-us/articles/360001386897-Content-search-VTGrep-)



Credit: [@th3_protoCOL](https://twitter.com/th3_protoCOL)  

Source: https://twitter.com/th3_protoCOL/status/1505288686560186369



### Recipe Details  



`[{"op":"To Hex","args":["Space",0]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"content:{",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$"},"}",true,false,true,false]}]`



![Recipe 64](screenshots/recipe_64.png)  



## Recipe 65 - Deobfuscate MSF Venom PowerShell reverse shell payload  



Regular contributor @thebluetoob cooks a storm here with all the hallmarks of a seasoned CyberChef veteran: Registers, eye-bleeding regex, and a solid understanding of 'getting it done' in CyberChef. Kudos!   



Credit: [@thebluetoob](https://twitter.com/thebluetoob)  



### Recipe Details  



`[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Register","args":["\\'\\'\\)\\-f\\'\\'([a-zA-Z0-9+=\\/])\\'\\'[\\,\\'\\)]{3}([a-zA-Z0-9+=\\/])?[\\'\\)\\,]{1,5}([a-zA-Z0-9+=\\/])?.*?\\[",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\{[\\'\\+0]*?}"},"$R0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\{[\\'\\+1]*?}"},"$R1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\{[\\'\\+2]*?}"},"$R2",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"''+''"},"",true,false,true,false]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["None",0]}]`



![Recipe 65](screenshots/recipe_65.png)  



## Recipe 66 - Nested subsection example



Nested subsections is a feature available in versions >= 9.46.0. If you have a layered obfuscation and use two subsections you can merge the second layer only without losing your first subsection later. The below recipe is a contrived example and is explained [in this Twitter thread](https://twitter.com/mattnotmax/status/1545990049094778880).  



Source: https://twitter.com/mattnotmax/status/1545990049094778880



### Recipe Details with nested subsection



`[{"op":"Subsection","args":["[a-zA-Z0-9+/=]{100,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Subsection","args":["\\\".*\\\"",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\\""},"",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Merge","args":[false]},{"op":"From Hex","args":["Auto"]}]`



### Recipe details on older versions



`[{"op":"Subsection","args":["[a-zA-Z0-9+/=]{100,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Subsection","args":["\\\".*\\\"",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\\""},"",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":["[a-fA-F0-9]{100,}",true,true,false]},{"op":"From Hex","args":["Auto"]}]`



![Recipe 66](screenshots/recipe_66.png)  



## Recipe 67 - Converting a MSI ProductCode to Registry Installer ProductID  



MSI files have a master ProductCode GUID for each installer file. This will be referenced in the registry at HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\ with a ProductID. That original ProductCode GUID undergoes a simple transformation that we can do in CyberChef. If you have a malicious .msi file you could look up the corresponding ProductCode, calculate the ProductID and hunt in the registry for artifacts. Try it with the string: `{6732E1E0-6629-4B92-A25F-40377D162D15}`. Good luck!  



Source: https://www.advancedinstaller.com/msi-registration-productid.html



### Recipe Details  



`[{"op":"Find / Replace","args":[{"option":"Regex","string":"\\}|\\{|-"},"",true,false,true,false]},{"op":"Subsection","args":["^(\\w{8})",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[true]},{"op":"Subsection","args":["^\\w{8}(\\w{4})",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[true]},{"op":"Subsection","args":["^\\w{8}\\w{4}(\\w{4})",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[true]},{"op":"Subsection","args":["(\\w{16})$",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Swap endianness","args":["Hex",8,false]},{"op":"Merge","args":[true]},{"op":"Remove whitespace","args":[true,true,true,true,true,false]},{"op":"To Upper case","args":["All"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\Installer\\Products\\",true,false,true,false]}]`



![Recipe 67](screenshots/recipe_67.png)  



## Recipe 68 - Converting Java signed byte arrays



Java uses signed integers so character codes need to be converted to unsigned values before we can use the 'From Character Code' operation. Here we extract the byte array from a Java Neo-ReGeorg webshell and conver the data to its class file. From there we can save off the class file and decompile for further analysis.  



Source: https://twitter.com/mattnotmax/status/1563106640819150848  

Source: https://github.com/L-codes/Neo-reGeorg



### Recipe Details  



`[{"op":"Regular expression","args":["User defined","(?<=\\{)([\\-\\d,]+)(?=\\})",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(-\\d+)"},"$1 256",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":","},"\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Sum","args":["Space"]},{"op":"Merge","args":[true]},{"op":"From Charcode","args":["Line feed",10]}]`



![Recipe 68](screenshots/recipe_68.png)  



## Recipe 69 - Extracting DLL payload from a Bumblebee Powershell script  



Bumblebee, the apparent successor to Bazarloader, comes in swinging with a large PowerShell payload containing 113 Base64 blobs. Convert, decompress, substitute, regex-fu, substitute. All in a days work to extra the DLL payload with CyberChef.  



Source: https://twitter.com/mattnotmax/status/1564915219507253248  

Credit: https://twitter.com/_shtove and https://twitter.com/mattnotmax  



`[{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^."},"H",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Gunzip","args":[]},{"op":"Merge","args":[true]},{"op":"Regular expression","args":["User defined","(?<=0\\n*x)([a-f0-9]{2})(?=,|\\))",true,true,false,false,false,false,"List matches"]},{"op":"From Hex","args":["Auto"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^."},"M",true,false,false,false]}]`  



![Recipe 69](screenshots/recipe_69.png)  



## Recipe 70 - Extracting endpoints from Android network security config



The Network Security Configuration feature lets you customize your app's network security settings in a safe, declarative configuration file without modifying app code. These settings can be configured for specific domains and for a specific app. This recipe can be used to extract some endpoints that can help in your recon:



Credit: [https://www.linkedin.com/in/isdebuggerpresent](https://www.linkedin.com/in/isdebuggerpresent)



`[{"op":"Regular expression","args":["User defined","includeSubdomains\\=\\\"\\w+\\\"\\>(?.*)\\<",true,true,false,false,false,false,"List capture groups"]},{"op":"Unique","args":["Line feed",false]}]`  



![Recipe 70](screenshots/recipe_70.png)  



# Training



I've developed a course 'CyberChef for Security Analysts' which contains 10 hours of instuctional videos plus labs through Applied Network Defense. To find out more visit [learncyberchef.com](http://learncyberchef.com)



# Resources, Books & Blog Articles



[Twitter #cyberchef](https://twitter.com/search?q=%23cyberchef)  

[CyberChef & DFIR](https://bitofhex.com/2018/05/29/cyberchef/)  

[CyberChef Docker Image](https://hub.docker.com/r/remnux/cyberchef/) (untested!)   

[Static Malware Analysis with OLE Tools and CyberChef](https://newtonpaul.com/static-malware-analysis-with-ole-tools-and-cyber-chef/#)  

[Analyzing obfuscated Powershell with shellcode](https://medium.com/@tstillz17/analyzing-obfuscated-powershell-with-shellcode-1b6cb8ab5ab0)  

[Solving Simple Crypto Challenges with CyberChef](http://www.codehead.co.uk/tamuctf-2019-crypto-cyberchef/)  

[CyberChef: BASE64/XOR Recipe](https://isc.sans.edu/forums/diary/CyberChef+BASE64XOR+Recipe/24212/)  

[Deciphering Browser Hieroglyphics: LocalStorage (Part 2)](https://dfir.blog/deciphering-browser-hieroglyphics-localstorage/)  

[Cooking with the Cyber-Chef 2020](https://www.amazon.com.au/Cooking-Cyber-Chef-2020-Cyberchef-Awesome-ebook/dp/B085LMP1NR/)  



# Instructional Videos



[13cubed: Cooking with CyberChef](https://www.youtube.com/watch?v=eqbTQpGSR7g)  

[Decoding Metasploit framework and CobaltStrike shells](https://www.youtube.com/watch?v=Y50WdhSDjic)  

[Hiding Malicious code using windows CMD - Dosfuscation](https://www.youtube.com/watch?v=ptsF2PvD4vY)  

[Splunk TA (Technology Add-on) Example](https://vimeo.com/243919059)  



# Browser & Application Extensions/APIs



I haven't tested these, so caveat emptor.  



[FireFox](https://addons.mozilla.org/en-US/firefox/addon/open-in-cyberchef/)  

[Chrome](https://chrome.google.com/webstore/detail/open-in-cyberchef/aandeoaihmciockajcgadkgknejppjdl)  

[Burp - SentToCyberChef](https://github.com/xorrbit/Burp-SendToCyberChef)  

[CyberSaucier](https://github.com/DBHeise/CyberSaucier)  

[Official CyberChef Server](https://github.com/gchq/CyberChef-server)  

[Splunk TA (Technology Add-on)](https://github.com/daveherrald/TA-cyberchef)  



# Presentations / Conference Talks



[@GlassSec: Zero to Hero with CyberChef](https://www.osdfcon.org/presentations/2019/Jonathan-Glass_Cybersecurity-Zero-to-Hero-With-CyberChef.pdf)



## Contributions



Happy to add (and learn) more. Pull request or tweet to @mattnotmax!  



Please include original source of text and recipe developer (if not yourself). For consistency in pasting into CyberChef I have found the best results are to export the function as compact JSON.