BranchesTags

Repository files navigation

chainwalker

What

ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.

Features

  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode

Use cases

  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)

Usage

Download the artifact for your distro from the release section, execute it and follow the usage guide.

if you want to use EVM downloader (without -p) option make sure you have EVM installed


chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo

Extracts contracts with minumum balance of 3 eth

chainwalker

Extracts contracts any balance on given block

chainwalker

without -p option this is what created output will look like

chainwalker

limitation

  • can not directly grab internal contract transactions

Dev

  • clone the repo
go build main.go

Troubleshooting

If you are using a remote server and the program crashes or gives you an error, here are things you can try.

  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)

Credits :

  • eth.wiki
  • core-geth
  • go-Ethereum

About

Rapid Smart Contract Crawler

Topics

blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3

Resources

Readme
Activity

Stars

203 stars

Watchers

5 watching

Forks

22 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
chainwalker
What
ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.
Features
  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode
Use cases
  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)
Usage
Download the artifact for your distro from the release section, execute it and follow the usage guide.
if you want to use EVM downloader (without -p) option make sure you have EVM installed

chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo
Extracts contracts with minumum balance of 3 eth
chainwalker
Extracts contracts any balance on given block
chainwalker
without -p option this is what created output will look like
chainwalker
limitation
  • can not directly grab internal contract transactions
Dev
  • clone the repo
go build main.go 
Troubleshooting
If you are using a remote server and the program crashes or gives you an error, here are things you can try.
  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)
Credits :
  • eth.wiki
  • core-geth
  • go-Ethereum
About
Rapid Smart Contract Crawler
Topics
blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3
Resources
Readme
Activity
Stars
203 stars
Watchers
5 watching
Forks
22 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
chainwalker
What
ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.
Features
  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode
Use cases
  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)
Usage
Download the artifact for your distro from the release section, execute it and follow the usage guide.
if you want to use EVM downloader (without -p) option make sure you have EVM installed

chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo
Extracts contracts with minumum balance of 3 eth
chainwalker
Extracts contracts any balance on given block
chainwalker
without -p option this is what created output will look like
chainwalker
limitation
  • can not directly grab internal contract transactions
Dev
  • clone the repo
go build main.go 
Troubleshooting
If you are using a remote server and the program crashes or gives you an error, here are things you can try.
  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)
Credits :
  • eth.wiki
  • core-geth
  • go-Ethereum
About
Rapid Smart Contract Crawler
Topics
blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3
Resources
Readme
Activity
Stars
203 stars
Watchers
5 watching
Forks
22 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
chainwalker
What
ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.
Features
  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode
Use cases
  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)
Usage
Download the artifact for your distro from the release section, execute it and follow the usage guide.
if you want to use EVM downloader (without -p) option make sure you have EVM installed

chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo
Extracts contracts with minumum balance of 3 eth
chainwalker
Extracts contracts any balance on given block
chainwalker
without -p option this is what created output will look like
chainwalker
limitation
  • can not directly grab internal contract transactions
Dev
  • clone the repo
go build main.go 
Troubleshooting
If you are using a remote server and the program crashes or gives you an error, here are things you can try.
  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)
Credits :
  • eth.wiki
  • core-geth
  • go-Ethereum
About
Rapid Smart Contract Crawler
Topics
blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3
Resources
Readme
Activity
Stars
203 stars
Watchers
5 watching
Forks
22 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
chainwalker
What
ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.
Features
  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode
Use cases
  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)
Usage
Download the artifact for your distro from the release section, execute it and follow the usage guide.
if you want to use EVM downloader (without -p) option make sure you have EVM installed

chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo
Extracts contracts with minumum balance of 3 eth
chainwalker
Extracts contracts any balance on given block
chainwalker
without -p option this is what created output will look like
chainwalker
limitation
  • can not directly grab internal contract transactions
Dev
  • clone the repo
go build main.go 
Troubleshooting
If you are using a remote server and the program crashes or gives you an error, here are things you can try.
  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)
Credits :
  • eth.wiki
  • core-geth
  • go-Ethereum
About
Rapid Smart Contract Crawler
Topics
blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3
Resources
Readme
Activity
Stars
203 stars
Watchers
5 watching
Forks
22 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
chainwalker
What
ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.
Features
  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode
Use cases
  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)
Usage
Download the artifact for your distro from the release section, execute it and follow the usage guide.
if you want to use EVM downloader (without -p) option make sure you have EVM installed

chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo
Extracts contracts with minumum balance of 3 eth
chainwalker
Extracts contracts any balance on given block
chainwalker
without -p option this is what created output will look like
chainwalker
limitation
  • can not directly grab internal contract transactions
Dev
  • clone the repo
go build main.go 
Troubleshooting
If you are using a remote server and the program crashes or gives you an error, here are things you can try.
  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)
Credits :
  • eth.wiki
  • core-geth
  • go-Ethereum
About
Rapid Smart Contract Crawler
Topics
blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3
Resources
Readme
Activity
Stars
203 stars
Watchers
5 watching
Forks
22 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
chainwalker
What
ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.
Features
  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode
Use cases
  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)
Usage
Download the artifact for your distro from the release section, execute it and follow the usage guide.
if you want to use EVM downloader (without -p) option make sure you have EVM installed

chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo
Extracts contracts with minumum balance of 3 eth
chainwalker
Extracts contracts any balance on given block
chainwalker
without -p option this is what created output will look like
chainwalker
limitation
  • can not directly grab internal contract transactions
Dev
  • clone the repo
go build main.go 
Troubleshooting
If you are using a remote server and the program crashes or gives you an error, here are things you can try.
  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)
Credits :
  • eth.wiki
  • core-geth
  • go-Ethereum
About
Rapid Smart Contract Crawler
Topics
blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3
Resources
Readme
Activity
Stars
203 stars
Watchers
5 watching
Forks
22 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
chainwalker
What
ChainWalker is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances.
Features
  • cross-platform
  • concurrent and fast
  • It doesn't require 3rd party API
  • downloads contract EVM
  • disassemble EVM to opcode
Use cases
  • academia: machine learning and data science, sampling contracts
  • cybersecurity: audit companies, threat intel, researchers
  • web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs
  • marketing: unique insights (to make educated guesses)
Usage
Download the artifact for your distro from the release section, execute it and follow the usage guide.
if you want to use EVM downloader (without -p) option make sure you have EVM installed

chainwalker -h
7:50PM INF ChainWalker 1.0.3-alpha - Usage
-b float
minimum balance (default 0)
-c int
concurrency (default 1)
-d	sets log level to debug
-e int
end block (int) (default 14010000)
-ev string
EVM path (default "/usr/local/bin/evm")
-h	shows usage
-o string
output directory (default "output/")
-p	print on console only and do not download or disassemble contracts
-s int
start block (int) (default 14000000)
-u string
RCP/IPC endpoint (default "https://cloudflare-eth.com")

Demo
Extracts contracts with minumum balance of 3 eth
chainwalker
Extracts contracts any balance on given block
chainwalker
without -p option this is what created output will look like
chainwalker
limitation
  • can not directly grab internal contract transactions
Dev
  • clone the repo
go build main.go 
Troubleshooting
If you are using a remote server and the program crashes or gives you an error, here are things you can try.
  • try to lower the concurrency number to as low as 1
  • make sure you didn't hit the API limits of your provider
  • change the node provider
  • change the block numbers
  • go with a smaller block distance (between start and end)
  • make sure output directory exists in same directory as binary
  • better solution : run you own node and connect to IPC using /root/.ethereum/geth.ipc as -u (url)
Credits :
  • eth.wiki
  • core-geth
  • go-Ethereum
About
Rapid Smart Contract Crawler
Topics
blockchaincrawlerdatasetevm-bytecodegethsecuritysmart-contractsweb3
Resources
Readme
Activity
Stars
203 stars
Watchers
5 watching
Forks
22 forks
Report repository
Releases
Packages
Used by
Contributors
Languages