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GITBOOK-4393: No subject
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# macOS Apps - Inspecting, debugging and Fuzzing
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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Learn & practice AWS Hacking:<img src="../../../.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="../../../.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="../../../.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="../../../.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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@ -288,8 +288,6 @@ Its plist is located in `/System/Library/LaunchDaemons/com.apple.sysdiagnose.pli
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* `com.apple.sysdiagnose.kernel.ipc`: Special port 23 (kernel)
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* `com.apple.sysdiagnose.service.xpc`: User mode interface through `Libsysdiagnose` Obj-C class. Three arguments in a dict can be passed (`compress`, `display`, `run`)
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### Unified Logs
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MacOS generates a lot of logs that can be very useful when running an application trying to understand **what is it doing**.
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@ -516,7 +514,7 @@ settings set target.x86-disassembly-flavor intel
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Inside lldb, dump a process with `process save-core`
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{% endhint %}
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<table data-header-hidden><thead><tr><th width="225"></th><th></th></tr></thead><tbody><tr><td><strong>(lldb) Command</strong></td><td><strong>Description</strong></td></tr><tr><td><strong>run (r)</strong></td><td>Starting execution, which will continue unabated until a breakpoint is hit or the process terminates.</td></tr><tr><td><strong>continue (c)</strong></td><td>Continue execution of the debugged process.</td></tr><tr><td><strong>nexti (n / ni)</strong></td><td>Execute the next instruction. This command will skip over function calls.</td></tr><tr><td><strong>stepi (s / si)</strong></td><td>Execute the next instruction. Unlike the nexti command, this command will step into function calls.</td></tr><tr><td><strong>finish (f)</strong></td><td>Execute the rest of the instructions in the current function (“frame”) return and halt.</td></tr><tr><td><strong>control + c</strong></td><td>Pause execution. If the process has been run (r) or continued (c), this will cause the process to halt ...wherever it is currently executing.</td></tr><tr><td><strong>breakpoint (b)</strong></td><td><p>b main #Any func called main</p><p>b <binname>`main #Main func of the bin</p><p>b set -n main --shlib <lib_name> #Main func of the indicated bin</p><p>b -[NSDictionary objectForKey:]</p><p>b -a 0x0000000100004bd9</p><p>br l #Breakpoint list</p><p>br e/dis <num> #Enable/Disable breakpoint</p><p>breakpoint delete <num></p></td></tr><tr><td><strong>help</strong></td><td><p>help breakpoint #Get help of breakpoint command</p><p>help memory write #Get help to write into the memory</p></td></tr><tr><td><strong>reg</strong></td><td><p>reg read</p><p>reg read $rax</p><p>reg read $rax --format <<a href="https://lldb.llvm.org/use/variable.html#type-format">format</a>></p><p>reg write $rip 0x100035cc0</p></td></tr><tr><td><strong>x/s <reg/memory address></strong></td><td>Display the memory as a null-terminated string.</td></tr><tr><td><strong>x/i <reg/memory address></strong></td><td>Display the memory as assembly instruction.</td></tr><tr><td><strong>x/b <reg/memory address></strong></td><td>Display the memory as byte.</td></tr><tr><td><strong>print object (po)</strong></td><td><p>This will print the object referenced by the param</p><p>po $raw</p><p><code>{</code></p><p><code>dnsChanger = {</code></p><p><code>"affiliate" = "";</code></p><p><code>"blacklist_dns" = ();</code></p><p>Note that most of Apple’s Objective-C APIs or methods return objects, and thus should be displayed via the “print object” (po) command. If po doesn't produce a meaningful output use <code>x/b</code></p></td></tr><tr><td><strong>memory</strong></td><td>memory read 0x000....<br>memory read $x0+0xf2a<br>memory write 0x100600000 -s 4 0x41414141 #Write AAAA in that address<br>memory write -f s $rip+0x11f+7 "AAAA" #Write AAAA in the addr</td></tr><tr><td><strong>disassembly</strong></td><td><p>dis #Disas current function</p><p>dis -n <funcname> #Disas func</p><p>dis -n <funcname> -b <basename> #Disas func<br>dis -c 6 #Disas 6 lines<br>dis -c 0x100003764 -e 0x100003768 # From one add until the other<br>dis -p -c 4 # Start in current address disassembling</p></td></tr><tr><td><strong>parray</strong></td><td>parray 3 (char **)$x1 # Check array of 3 components in x1 reg</td></tr></tbody></table>
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<table data-header-hidden><thead><tr><th width="225"></th><th></th></tr></thead><tbody><tr><td><strong>(lldb) Command</strong></td><td><strong>Description</strong></td></tr><tr><td><strong>run (r)</strong></td><td>Starting execution, which will continue unabated until a breakpoint is hit or the process terminates.</td></tr><tr><td><strong>process launch --stop-at-entry</strong></td><td>Strt execution stopping at the entry point</td></tr><tr><td><strong>continue (c)</strong></td><td>Continue execution of the debugged process.</td></tr><tr><td><strong>nexti (n / ni)</strong></td><td>Execute the next instruction. This command will skip over function calls.</td></tr><tr><td><strong>stepi (s / si)</strong></td><td>Execute the next instruction. Unlike the nexti command, this command will step into function calls.</td></tr><tr><td><strong>finish (f)</strong></td><td>Execute the rest of the instructions in the current function (“frame”) return and halt.</td></tr><tr><td><strong>control + c</strong></td><td>Pause execution. If the process has been run (r) or continued (c), this will cause the process to halt ...wherever it is currently executing.</td></tr><tr><td><strong>breakpoint (b)</strong></td><td><p><code>b main</code> #Any func called main</p><p><code>b <binname>`main</code> #Main func of the bin</p><p><code>b set -n main --shlib <lib_name></code> #Main func of the indicated bin</p><p><code>breakpoint set -r '\[NSFileManager .*\]$'</code> #Any NSFileManager method</p><p><code>breakpoint set -r '\[NSFileManager contentsOfDirectoryAtPath:.*\]$'</code></p><p><code>break set -r . -s libobjc.A.dylib</code> # Break in all functions of that library</p><p><code>b -a 0x0000000100004bd9</code></p><p><code>br l</code> #Breakpoint list</p><p><code>br e/dis <num></code> #Enable/Disable breakpoint</p><p>breakpoint delete <num></p></td></tr><tr><td><strong>help</strong></td><td><p>help breakpoint #Get help of breakpoint command</p><p>help memory write #Get help to write into the memory</p></td></tr><tr><td><strong>reg</strong></td><td><p>reg read</p><p>reg read $rax</p><p>reg read $rax --format <<a href="https://lldb.llvm.org/use/variable.html#type-format">format</a>></p><p>reg write $rip 0x100035cc0</p></td></tr><tr><td><strong>x/s <reg/memory address></strong></td><td>Display the memory as a null-terminated string.</td></tr><tr><td><strong>x/i <reg/memory address></strong></td><td>Display the memory as assembly instruction.</td></tr><tr><td><strong>x/b <reg/memory address></strong></td><td>Display the memory as byte.</td></tr><tr><td><strong>print object (po)</strong></td><td><p>This will print the object referenced by the param</p><p>po $raw</p><p><code>{</code></p><p><code>dnsChanger = {</code></p><p><code>"affiliate" = "";</code></p><p><code>"blacklist_dns" = ();</code></p><p>Note that most of Apple’s Objective-C APIs or methods return objects, and thus should be displayed via the “print object” (po) command. If po doesn't produce a meaningful output use <code>x/b</code></p></td></tr><tr><td><strong>memory</strong></td><td>memory read 0x000....<br>memory read $x0+0xf2a<br>memory write 0x100600000 -s 4 0x41414141 #Write AAAA in that address<br>memory write -f s $rip+0x11f+7 "AAAA" #Write AAAA in the addr</td></tr><tr><td><strong>disassembly</strong></td><td><p>dis #Disas current function</p><p>dis -n <funcname> #Disas func</p><p>dis -n <funcname> -b <basename> #Disas func<br>dis -c 6 #Disas 6 lines<br>dis -c 0x100003764 -e 0x100003768 # From one add until the other<br>dis -p -c 4 # Start in current address disassembling</p></td></tr><tr><td><strong>parray</strong></td><td>parray 3 (char **)$x1 # Check array of 3 components in x1 reg</td></tr><tr><td><strong>image dump sections</strong></td><td>Print map of the current process memory</td></tr><tr><td><strong>image dump symtab <library></strong></td><td><code>image dump symtab CoreNLP</code> #Get the address of all the symbols from CoreNLP</td></tr></tbody></table>
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{% hint style="info" %}
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When calling the **`objc_sendMsg`** function, the **rsi** register holds the **name of the method** as a null-terminated (“C”) string. To print the name via lldb do:
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@ -690,8 +688,8 @@ You can check their website and try their engine for **free** at:
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{% embed url="https://whiteintel.io" %}
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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Learn & practice AWS Hacking:<img src="../../../.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="../../../.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="../../../.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="../../../.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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