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diff --git a/Content/posts/2023-10-04-bomb-lab.md b/Content/posts/2023-10-04-bomb-lab.md index d235186..98c5272 100644 --- a/Content/posts/2023-10-04-bomb-lab.md +++ b/Content/posts/2023-10-04-bomb-lab.md @@ -1,10 +1,10 @@ --- date: 2023-10-04 13:12 -description: Introduction, Phases 1-4 of Bomb Lab for CSCI 2400 Lab - 2 +description: Introduction, Phases 1-5 of Bomb Lab for CSCI 2400 Lab - 2 tags: gdb, reverse-engineering, c++, csci2400, assembly --- -# Bomb Lab Phases 1-4 +# Bomb Lab Phases 1-5 ## Introduction @@ -621,7 +621,7 @@ def func4(edi, esi=0, edx=20): else: return 0 -for x in range(10): +for x in range(15): # We can limit to 14 if func4(x) == 2: print(f"answer is {x}") break @@ -653,3 +653,128 @@ Continuing. So you got that one. Try this one. ``` +## Phase 5 + +``` +So you got that one. Try this one. +test string + +Breakpoint 1, 0x0000555555555830 in phase_5 () +(gdb) disas phase_5 +Dump of assembler code for function phase_5: +=> 0x0000555555555830 <+0>: endbr64 + 0x0000555555555834 <+4>: push %rbx + 0x0000555555555835 <+5>: sub $0x10,%rsp + 0x0000555555555839 <+9>: mov %rdi,%rbx + 0x000055555555583c <+12>: call 0x555555555b10 <string_length> + 0x0000555555555841 <+17>: cmp $0x6,%eax + 0x0000555555555844 <+20>: jne 0x55555555588b <phase_5+91> + 0x0000555555555846 <+22>: mov $0x0,%eax + 0x000055555555584b <+27>: lea 0x199e(%rip),%rcx # 0x5555555571f0 <array.0> + 0x0000555555555852 <+34>: movzbl (%rbx,%rax,1),%edx + 0x0000555555555856 <+38>: and $0xf,%edx + 0x0000555555555859 <+41>: movzbl (%rcx,%rdx,1),%edx + 0x000055555555585d <+45>: mov %dl,0x9(%rsp,%rax,1) + 0x0000555555555861 <+49>: add $0x1,%rax + 0x0000555555555865 <+53>: cmp $0x6,%rax + 0x0000555555555869 <+57>: jne 0x555555555852 <phase_5+34> + 0x000055555555586b <+59>: movb $0x0,0xf(%rsp) + 0x0000555555555870 <+64>: lea 0x9(%rsp),%rdi + 0x0000555555555875 <+69>: lea 0x1943(%rip),%rsi # 0x5555555571bf + 0x000055555555587c <+76>: call 0x555555555b31 <strings_not_equal> + 0x0000555555555881 <+81>: test %eax,%eax + 0x0000555555555883 <+83>: jne 0x555555555892 <phase_5+98> + 0x0000555555555885 <+85>: add $0x10,%rsp + 0x0000555555555889 <+89>: pop %rbx + 0x000055555555588a <+90>: ret + 0x000055555555588b <+91>: call 0x555555555d4a <explode_bomb> + 0x0000555555555890 <+96>: jmp 0x555555555846 <phase_5+22> + 0x0000555555555892 <+98>: call 0x555555555d4a <explode_bomb> + 0x0000555555555897 <+103>: jmp 0x555555555885 <phase_5+85> +End of assembler dump. +(gdb) +``` + +``` +... + 0x000055555555583c <+12>: call 0x555555555b10 <string_length> + 0x0000555555555841 <+17>: cmp $0x6,%eax + 0x0000555555555844 <+20>: jne 0x55555555588b <phase_5+91> +... + 0x000055555555588b <+91>: call 0x555555555d4a <explode_bomb> +... +``` + +First things first, these instructions check to make sure the passed string is of length 6, otherwise `explode_bomb` is called. + +We can also see a similar pattern compared to Phase 2, where we had a loop: + +* The looping part: + * `mov $0x0,%eax` - Initialise `%eax` and set it to 0 (our counter/iterator) + * `movzbl (%rbx,%rax,1),%edx` - Access `%rbx + 1 * %rax` and store it in `%edx` + * `and $0xf,%edx` - Take the least significant 4 bits of the byte. + * `movzbl (%rcx,%rdx,1),%edx` - Use the 4 bits as an index into another array and load the corresponding byte into `%edx` + * `mov %dl,0x9(%rsp,%rax,1)` - Store the transformed byte into a buffer on the stack + * `add $0x1,%rax` - Increment `%rax` + * `cmp $0x6,%rax` - If the index is not yet 6, loop again +* `movb $0x0,0xf(%rsp)` - Null-terminate the transformed string +* `lea 0x9(%rsp),%rdi` and `lea 0x1943(%rip),%rsi` +* `all 0x555555555b31 <strings_not_equal>` check if the two strings loaded up just before this are equal or not. + +We can check the reference string we need, which `gdb` has marked as `# 0x5555555571bf`, and the lookup table marked as `# 0x5555555571f0 <array.0>` + +``` +(gdb) x/s 0x5555555571bf +0x5555555571bf: "bruins" +(gdb) x/s 0x5555555571f0 +0x5555555571f0 <array.0>: "maduiersnfotvbylSo you think you can stop the bomb with ctrl-c, do you?" +(gdb) +``` + +To summarize the transformation process: + +* The function takes each byte of the string +* It keeps only the least significant 4 bits of each byte +* It uses these 4 bits as an index into the lookup table (`array.0`) +* The value from the array is then stored in a buffer + +Here's how the transformation process can be reversed for each character in "bruins": +1. Find the index of `b` in the lookup table (in our case, it is 13 since we index starting 0) +2. Calculate binary representation of this index (in our case 13 can be written as 1101 in binary) +3. Find ASCII character whose least significant 4 bits match (in our case, `m` has binary representation `01101101`) + +Repeat for all 6 characters + +*Hint: Using an [ASCII - Binary Table](http://sticksandstones.kstrom.com/appen.html) can save you time.* + +Thus, we can have the following transformation: + +``` +b -> m +r -> f +u -> c +i -> d +n -> h +s -> g +``` + + +Let us try out this answer: + +``` +... +That's number 2. Keep going! +Halfway there! +So you got that one. Try this one. +mfcdhg + +Breakpoint 1, 0x0000555555555830 in phase_5 () +(gdb) continue +Continuing. +Good work! On to the next... +``` + +Awesome! + +## Phase 6 + diff --git a/docs/feed.rss b/docs/feed.rss index b212d4e..deeb637 100644 --- a/docs/feed.rss +++ b/docs/feed.rss @@ -4,8 +4,8 @@ <title>Navan's Archive</title> <description>Rare Tips, Tricks and Posts</description> <link>https://web.navan.dev/</link><language>en</language> - <lastBuildDate>Wed, 04 Oct 2023 15:21:02 -0000</lastBuildDate> - <pubDate>Wed, 04 Oct 2023 15:21:02 -0000</pubDate> + <lastBuildDate>Wed, 04 Oct 2023 15:54:23 -0000</lastBuildDate> + <pubDate>Wed, 04 Oct 2023 15:54:23 -0000</pubDate> <ttl>250</ttl> <atom:link href="https://web.navan.dev/feed.rss" rel="self" type="application/rss+xml"/> @@ -3212,14 +3212,14 @@ logger.info("rdkit-{} installation finished!".format(rdkit.__version__)) https://web.navan.dev/posts/2023-10-04-bomb-lab.html </guid> <title> - Bomb Lab Phases 1-4 + Bomb Lab Phases 1-5 </title> <description> - Introduction, Phases 1-4 of Bomb Lab for CSCI 2400 Lab - 2 + Introduction, Phases 1-5 of Bomb Lab for CSCI 2400 Lab - 2 </description> <link>https://web.navan.dev/posts/2023-10-04-bomb-lab.html</link> <pubDate>Wed, 04 Oct 2023 13:12:00 -0000</pubDate> - <content:encoded><![CDATA[<h1>Bomb Lab Phases 1-4</h1> + <content:encoded><![CDATA[<h1>Bomb Lab Phases 1-5</h1> <h2>Introduction</h2> @@ -3810,7 +3810,7 @@ jmp 0x5555555557b4 <func4+27> else: return 0 -for x in range(10): +for x in range(15): # We can limit to 14 if func4(x) == 2: print(f"answer is {x}") break @@ -3839,6 +3839,131 @@ Breakpoint 1, 0x00005555555557d3 in phase_4 () Continuing. So you got that one. Try this one. </code></pre> + +<h2>Phase 5</h2> + +<pre><code>So you got that one. Try this one. +test string + +Breakpoint 1, 0x0000555555555830 in phase_5 () +(gdb) disas phase_5 +Dump of assembler code for function phase_5: +=> 0x0000555555555830 <+0>: endbr64 + 0x0000555555555834 <+4>: push %rbx + 0x0000555555555835 <+5>: sub $0x10,%rsp + 0x0000555555555839 <+9>: mov %rdi,%rbx + 0x000055555555583c <+12>: call 0x555555555b10 <string_length> + 0x0000555555555841 <+17>: cmp $0x6,%eax + 0x0000555555555844 <+20>: jne 0x55555555588b <phase_5+91> + 0x0000555555555846 <+22>: mov $0x0,%eax + 0x000055555555584b <+27>: lea 0x199e(%rip),%rcx # 0x5555555571f0 <array.0> + 0x0000555555555852 <+34>: movzbl (%rbx,%rax,1),%edx + 0x0000555555555856 <+38>: and $0xf,%edx + 0x0000555555555859 <+41>: movzbl (%rcx,%rdx,1),%edx + 0x000055555555585d <+45>: mov %dl,0x9(%rsp,%rax,1) + 0x0000555555555861 <+49>: add $0x1,%rax + 0x0000555555555865 <+53>: cmp $0x6,%rax + 0x0000555555555869 <+57>: jne 0x555555555852 <phase_5+34> + 0x000055555555586b <+59>: movb $0x0,0xf(%rsp) + 0x0000555555555870 <+64>: lea 0x9(%rsp),%rdi + 0x0000555555555875 <+69>: lea 0x1943(%rip),%rsi # 0x5555555571bf + 0x000055555555587c <+76>: call 0x555555555b31 <strings_not_equal> + 0x0000555555555881 <+81>: test %eax,%eax + 0x0000555555555883 <+83>: jne 0x555555555892 <phase_5+98> + 0x0000555555555885 <+85>: add $0x10,%rsp + 0x0000555555555889 <+89>: pop %rbx + 0x000055555555588a <+90>: ret + 0x000055555555588b <+91>: call 0x555555555d4a <explode_bomb> + 0x0000555555555890 <+96>: jmp 0x555555555846 <phase_5+22> + 0x0000555555555892 <+98>: call 0x555555555d4a <explode_bomb> + 0x0000555555555897 <+103>: jmp 0x555555555885 <phase_5+85> +End of assembler dump. +(gdb) +</code></pre> + +<pre><code>... + 0x000055555555583c <+12>: call 0x555555555b10 <string_length> + 0x0000555555555841 <+17>: cmp $0x6,%eax + 0x0000555555555844 <+20>: jne 0x55555555588b <phase_5+91> +... + 0x000055555555588b <+91>: call 0x555555555d4a <explode_bomb> +... +</code></pre> + +<p>First things first, these instructions check to make sure the passed string is of length 6, otherwise <code>explode_bomb</code> is called.</p> + +<p>We can also see a similar pattern compared to Phase 2, where we had a loop:</p> + +<ul> +<li>The looping part: +<ul> +<li><code>mov $0x0,%eax</code> - Initialise <code>%eax</code> and set it to 0 (our counter/iterator)</li> +<li><code>movzbl (%rbx,%rax,1),%edx</code> - Access <code>%rbx + 1 * %rax</code> and store it in <code>%edx</code></li> +<li><code>and $0xf,%edx</code> - Take the least significant 4 bits of the byte.</li> +<li><code>movzbl (%rcx,%rdx,1),%edx</code> - Use the 4 bits as an index into another array and load the corresponding byte into <code>%edx</code></li> +<li><code>mov %dl,0x9(%rsp,%rax,1)</code> - Store the transformed byte into a buffer on the stack</li> +<li><code>add $0x1,%rax</code> - Increment <code>%rax</code></li> +<li><code>cmp $0x6,%rax</code> - If the index is not yet 6, loop again</li> +</ul></li> +<li><code>movb $0x0,0xf(%rsp)</code> - Null-terminate the transformed string</li> +<li><code>lea 0x9(%rsp),%rdi</code> and <code>lea 0x1943(%rip),%rsi</code> </li> +<li><code>all 0x555555555b31 <strings_not_equal></code> check if the two strings loaded up just before this are equal or not.</li> +</ul> + +<p>We can check the reference string we need, which <code>gdb</code> has marked as <code># 0x5555555571bf</code>, and the lookup table marked as <code># 0x5555555571f0 <array.0></code></p> + +<pre><code>(gdb) x/s 0x5555555571bf +0x5555555571bf: "bruins" +(gdb) x/s 0x5555555571f0 +0x5555555571f0 <array.0>: "maduiersnfotvbylSo you think you can stop the bomb with ctrl-c, do you?" +(gdb) +</code></pre> + +<p>To summarize the transformation process:</p> + +<ul> +<li>The function takes each byte of the string</li> +<li>It keeps only the least significant 4 bits of each byte</li> +<li>It uses these 4 bits as an index into the lookup table (<code>array.0</code>)</li> +<li>The value from the array is then stored in a buffer</li> +</ul> + +<p>Here's how the transformation process can be reversed for each character in "bruins": +1. Find the index of <code>b</code> in the lookup table (in our case, it is 13 since we index starting 0) +2. Calculate binary representation of this index (in our case 13 can be written as 1101 in binary) +3. Find ASCII character whose least significant 4 bits match (in our case, <code>m</code> has binary representation <code>01101101</code>)</p> + +<p>Repeat for all 6 characters</p> + +<p><em>Hint: Using an <a rel="noopener" target="_blank" href="http://sticksandstones.kstrom.com/appen.html">ASCII - Binary Table</a> can save you time.</em> </p> + +<p>Thus, we can have the following transformation:</p> + +<pre><code>b -> m +r -> f +u -> c +i -> d +n -> h +s -> g +</code></pre> + +<p>Let us try out this answer:</p> + +<pre><code>... +That's number 2. Keep going! +Halfway there! +So you got that one. Try this one. +mfcdhg + +Breakpoint 1, 0x0000555555555830 in phase_5 () +(gdb) continue +Continuing. +Good work! On to the next... +</code></pre> + +<p>Awesome!</p> + +<h2>Phase 6</h2> ]]></content:encoded> </item> diff --git a/docs/index.html b/docs/index.html index 1f0b9d2..f743eee 100644 --- a/docs/index.html +++ b/docs/index.html @@ -59,9 +59,9 @@ <ul> - <li><a href="/posts/2023-10-04-bomb-lab.html">Bomb Lab Phases 1-4</a></li> + <li><a href="/posts/2023-10-04-bomb-lab.html">Bomb Lab Phases 1-5</a></li> <ul> - <li>Introduction, Phases 1-4 of Bomb Lab for CSCI 2400 Lab - 2</li> + <li>Introduction, Phases 1-5 of Bomb Lab for CSCI 2400 Lab - 2</li> <li>Published On: 2023-10-04 13:12</li> <li>Tags: diff --git a/docs/posts/2023-10-04-bomb-lab.html b/docs/posts/2023-10-04-bomb-lab.html index 886c264..28ce317 100644 --- a/docs/posts/2023-10-04-bomb-lab.html +++ b/docs/posts/2023-10-04-bomb-lab.html @@ -6,16 +6,16 @@ <link rel="stylesheet" href="/assets/sakura.css" /> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> - <title>Bomb Lab Phases 1-4</title> + <title>Bomb Lab Phases 1-5</title> <meta name="og:site_name" content="Navan Chauhan" /> <link rel="canonical" href="https://web.navan.dev/" /> <meta name="twitter:url" content="https://web.navan.dev/" /> <meta name="og:url" content="https://web.navan.dev/" /> - <meta name="twitter:title" content="Bomb Lab Phases 1-4" /> - <meta name="og:title" content="Bomb Lab Phases 1-4" /> - <meta name="description" content="Introduction, Phases 1-4 of Bomb Lab for CSCI 2400 Lab - 2" /> - <meta name="twitter:description" content="Introduction, Phases 1-4 of Bomb Lab for CSCI 2400 Lab - 2" /> - <meta name="og:description" content="Introduction, Phases 1-4 of Bomb Lab for CSCI 2400 Lab - 2" /> + <meta name="twitter:title" content="Bomb Lab Phases 1-5" /> + <meta name="og:title" content="Bomb Lab Phases 1-5" /> + <meta name="description" content="Introduction, Phases 1-5 of Bomb Lab for CSCI 2400 Lab - 2" /> + <meta name="twitter:description" content="Introduction, Phases 1-5 of Bomb Lab for CSCI 2400 Lab - 2" /> + <meta name="og:description" content="Introduction, Phases 1-5 of Bomb Lab for CSCI 2400 Lab - 2" /> <meta name="twitter:card" content="summary_large_image" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="shortcut icon" href="/images/favicon.png" type="image/png" /> @@ -54,7 +54,7 @@ <main> - <h1>Bomb Lab Phases 1-4</h1> + <h1>Bomb Lab Phases 1-5</h1> <h2>Introduction</h2> @@ -645,7 +645,7 @@ jmp 0x5555555557b4 <func4+27> else: return 0 -for x in range(10): +for x in range(15): # We can limit to 14 if func4(x) == 2: print(f"answer is {x}") break @@ -675,6 +675,131 @@ Continuing. So you got that one. Try this one. </code></pre> +<h2>Phase 5</h2> + +<pre><code>So you got that one. Try this one. +test string + +Breakpoint 1, 0x0000555555555830 in phase_5 () +(gdb) disas phase_5 +Dump of assembler code for function phase_5: +=> 0x0000555555555830 <+0>: endbr64 + 0x0000555555555834 <+4>: push %rbx + 0x0000555555555835 <+5>: sub $0x10,%rsp + 0x0000555555555839 <+9>: mov %rdi,%rbx + 0x000055555555583c <+12>: call 0x555555555b10 <string_length> + 0x0000555555555841 <+17>: cmp $0x6,%eax + 0x0000555555555844 <+20>: jne 0x55555555588b <phase_5+91> + 0x0000555555555846 <+22>: mov $0x0,%eax + 0x000055555555584b <+27>: lea 0x199e(%rip),%rcx # 0x5555555571f0 <array.0> + 0x0000555555555852 <+34>: movzbl (%rbx,%rax,1),%edx + 0x0000555555555856 <+38>: and $0xf,%edx + 0x0000555555555859 <+41>: movzbl (%rcx,%rdx,1),%edx + 0x000055555555585d <+45>: mov %dl,0x9(%rsp,%rax,1) + 0x0000555555555861 <+49>: add $0x1,%rax + 0x0000555555555865 <+53>: cmp $0x6,%rax + 0x0000555555555869 <+57>: jne 0x555555555852 <phase_5+34> + 0x000055555555586b <+59>: movb $0x0,0xf(%rsp) + 0x0000555555555870 <+64>: lea 0x9(%rsp),%rdi + 0x0000555555555875 <+69>: lea 0x1943(%rip),%rsi # 0x5555555571bf + 0x000055555555587c <+76>: call 0x555555555b31 <strings_not_equal> + 0x0000555555555881 <+81>: test %eax,%eax + 0x0000555555555883 <+83>: jne 0x555555555892 <phase_5+98> + 0x0000555555555885 <+85>: add $0x10,%rsp + 0x0000555555555889 <+89>: pop %rbx + 0x000055555555588a <+90>: ret + 0x000055555555588b <+91>: call 0x555555555d4a <explode_bomb> + 0x0000555555555890 <+96>: jmp 0x555555555846 <phase_5+22> + 0x0000555555555892 <+98>: call 0x555555555d4a <explode_bomb> + 0x0000555555555897 <+103>: jmp 0x555555555885 <phase_5+85> +End of assembler dump. +(gdb) +</code></pre> + +<pre><code>... + 0x000055555555583c <+12>: call 0x555555555b10 <string_length> + 0x0000555555555841 <+17>: cmp $0x6,%eax + 0x0000555555555844 <+20>: jne 0x55555555588b <phase_5+91> +... + 0x000055555555588b <+91>: call 0x555555555d4a <explode_bomb> +... +</code></pre> + +<p>First things first, these instructions check to make sure the passed string is of length 6, otherwise <code>explode_bomb</code> is called.</p> + +<p>We can also see a similar pattern compared to Phase 2, where we had a loop:</p> + +<ul> +<li>The looping part: +<ul> +<li><code>mov $0x0,%eax</code> - Initialise <code>%eax</code> and set it to 0 (our counter/iterator)</li> +<li><code>movzbl (%rbx,%rax,1),%edx</code> - Access <code>%rbx + 1 * %rax</code> and store it in <code>%edx</code></li> +<li><code>and $0xf,%edx</code> - Take the least significant 4 bits of the byte.</li> +<li><code>movzbl (%rcx,%rdx,1),%edx</code> - Use the 4 bits as an index into another array and load the corresponding byte into <code>%edx</code></li> +<li><code>mov %dl,0x9(%rsp,%rax,1)</code> - Store the transformed byte into a buffer on the stack</li> +<li><code>add $0x1,%rax</code> - Increment <code>%rax</code></li> +<li><code>cmp $0x6,%rax</code> - If the index is not yet 6, loop again</li> +</ul></li> +<li><code>movb $0x0,0xf(%rsp)</code> - Null-terminate the transformed string</li> +<li><code>lea 0x9(%rsp),%rdi</code> and <code>lea 0x1943(%rip),%rsi</code> </li> +<li><code>all 0x555555555b31 <strings_not_equal></code> check if the two strings loaded up just before this are equal or not.</li> +</ul> + +<p>We can check the reference string we need, which <code>gdb</code> has marked as <code># 0x5555555571bf</code>, and the lookup table marked as <code># 0x5555555571f0 <array.0></code></p> + +<pre><code>(gdb) x/s 0x5555555571bf +0x5555555571bf: "bruins" +(gdb) x/s 0x5555555571f0 +0x5555555571f0 <array.0>: "maduiersnfotvbylSo you think you can stop the bomb with ctrl-c, do you?" +(gdb) +</code></pre> + +<p>To summarize the transformation process:</p> + +<ul> +<li>The function takes each byte of the string</li> +<li>It keeps only the least significant 4 bits of each byte</li> +<li>It uses these 4 bits as an index into the lookup table (<code>array.0</code>)</li> +<li>The value from the array is then stored in a buffer</li> +</ul> + +<p>Here's how the transformation process can be reversed for each character in "bruins": +1. Find the index of <code>b</code> in the lookup table (in our case, it is 13 since we index starting 0) +2. Calculate binary representation of this index (in our case 13 can be written as 1101 in binary) +3. Find ASCII character whose least significant 4 bits match (in our case, <code>m</code> has binary representation <code>01101101</code>)</p> + +<p>Repeat for all 6 characters</p> + +<p><em>Hint: Using an <a rel="noopener" target="_blank" href="http://sticksandstones.kstrom.com/appen.html">ASCII - Binary Table</a> can save you time.</em> </p> + +<p>Thus, we can have the following transformation:</p> + +<pre><code>b -> m +r -> f +u -> c +i -> d +n -> h +s -> g +</code></pre> + +<p>Let us try out this answer:</p> + +<pre><code>... +That's number 2. Keep going! +Halfway there! +So you got that one. Try this one. +mfcdhg + +Breakpoint 1, 0x0000555555555830 in phase_5 () +(gdb) continue +Continuing. +Good work! On to the next... +</code></pre> + +<p>Awesome!</p> + +<h2>Phase 6</h2> + <blockquote>If you have scrolled this far, consider subscribing to my mailing list <a href="https://listmonk.navan.dev/subscription/form">here.</a> You can subscribe to either a specific type of post you are interested in, or subscribe to everything with the "Everything" list.</blockquote> <script data-isso="//comments.navan.dev/" src="//comments.navan.dev/js/embed.min.js"></script> diff --git a/docs/posts/index.html b/docs/posts/index.html index 80c9dac..7a476b7 100644 --- a/docs/posts/index.html +++ b/docs/posts/index.html @@ -62,9 +62,9 @@ <ul> - <li><a href="/posts/2023-10-04-bomb-lab.html">Bomb Lab Phases 1-4</a></li> + <li><a href="/posts/2023-10-04-bomb-lab.html">Bomb Lab Phases 1-5</a></li> <ul> - <li>Introduction, Phases 1-4 of Bomb Lab for CSCI 2400 Lab - 2</li> + <li>Introduction, Phases 1-5 of Bomb Lab for CSCI 2400 Lab - 2</li> <li>Published On: 2023-10-04 13:12</li> <li>Tags: |